AGMODELS-L: 199510XX

is the compilation of discussion during Oct 95

via AB4EL Web Digests @ SunSITE

AGROMOMY Homepage @ SunSITE


>From root@crcnis1.unl.edu Sun Oct  1 03:16 EDT 1995
Date: Sun, 1 Oct 1995 02:03:46 -0500
Message-Id: <199510010703.AA26585@crcnis1.unl.edu>
Subject: AGMODELS-L digest 365

Contents:
Re: Introduction ("Stephen L. Rawlins" <srawlins@beta.tricity.wsu.edu>)



Date: Sat, 30 Sep 1995 05:52:42 -0700 (PDT) From: "Stephen L. Rawlins" <srawlins@beta.tricity.wsu.edu> Subject: Re: Introduction I'm Steve Rawlins, a long time lurker on this discussion group, but I have not yet introduced myself. Like John Sadler, I'm involved in precision farming, and have an interest in the use of simulation models linked with GIS for developing prescriptions for variable rate inputs. Shufeng Han, Tom Hodges and I have a paper on linking Simpotato, a Ceres model for potato, with ArcInfo. I'll post this and some other references later. As of today I am a retired ARS Scientist, but will be actively involved in precison farming through my affiliatlon with Washington State University, and through some private consulting activities.
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>From root@crcnis1.unl.edu Mon Oct  2 03:17 EDT 1995
Date: Mon, 2 Oct 1995 02:03:58 -0500
Message-Id: <199510020703.AA13031@crcnis1.unl.edu>
Subject: AGMODELS-L digest 366

Contents:
      Re: Lurking Questionnaire. (Graham Russell <GRUSSELL@srv0.bio.ed.ac.uk>)



Date: Sun, 1 Oct 1995 10:33:21 +0000 From: Graham Russell <GRUSSELL@srv0.bio.ed.ac.uk> Subject: Re: Lurking Questionnaire. > Question 1: What are your feelings regarding the phenomenon of > "lurking" on bulletin boards? I have no difficulty in people lurking provided that they do not take information from the board and use it without crediting the originators. I am sure that many lurkers do not contribute because they feel that what they have to contribute is not good/accurate enough. Some lurkers are future contributors. It is just that they have not been asked the right question yet. > Question 2: What benefits do you associate with "lurking" on > a bulletin board? Finding out information about subjects I know little about > Question 3: What detriments do you associate with "lurking" > on a bulletin board? lots of unwanted email messages! > Question 4: Are there any similarities between your willingness to > communicate with others in person and your willingness to > to post a message on a bulletin board? Yes, I guess so. I guess that the main difference is the opportunity to communicate with lots of people. Graham Russell Dr G. Russell University of Edinburgh Institute of Ecology & Resource Management (Agriculture Building) West Mains Road Edinburgh EH9 3JG SCOTLAND International phone +44 131 535 4063 Fax +44 131 667 2601 UK phone 031 535 4063 Fax 031 667 2601
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>From root@crcnis1.unl.edu Tue Oct  3 03:17 EDT 1995
Date: Tue, 3 Oct 1995 02:05:23 -0500
Message-Id: <199510030705.AA16293@crcnis1.unl.edu>
Subject: AGMODELS-L digest 367

Contents:
RE: Ag. Financial Mgt. & Software (xgrover@vt.edu (Gordon E. Groover))
RE: Lurking questionnaire (c.g.parker@lut.ac.uk (Caroline Parker))
salinity discussion list (rsoppe@cati.csufresno.edu (Richard Soppe))



Date: Mon, 2 Oct 1995 08:42:56 -0400 From: xgrover@vt.edu (Gordon E. Groover) Subject: RE: Ag. Financial Mgt. & Software >Gordon: > >Is the video conference being broadcast via satelite? If so what is the >time, date and satelite coordinates, etc. Is there a charge for the >conference (worksohop)? To subscribe to the farm-records listserv send e-mail to: listserv@listserv.vt.edu In the body of the e-mail message, type: subscribe farm-records Your_Name where "Your_Name" is your name, not computer id. The Listserv at Va Tech will respond with a message to your computer ID requesting confirmation that you want to be added to the list. After confirming this request you will be added to the list and can begin sending and receiving messages. The purpose of the farm-records listserv is to provide a forum for questions, answers, and discussion of all aspects of using and teaching farm financial and production records. Please, view this forum as a place to interact with your fellow educators and participants in the AG*SAT conference to improve our knowledge of farm-level records and their use in day-to- day management. If you have questions about the Farm-Records Listserv please contact: Gordon Groover at xgrover@vt.edu. Gordon E. Groover Extension Economist Farm Management Department Agriculture and Applied Economics Va. Tech Blacksburg, Va. 24061-0401 Phone: 540-231-5850 Fax: 540-231-7417 INTERNET: xgrover@vt.edu
Date: Mon, 2 Oct 95 15:50:32 bst From: c.g.parker@lut.ac.uk (Caroline Parker) Subject: RE: Lurking questionnaire Apologies for sending this to the whole list - I've lost the original email. > Question 1: What are your feelings regarding the phenomenon of > "lurking" on bulletin boards? I think most people are lurkers most of the time! Shyness has a lot to do with it I think. > Question 2: What benefits do you associate with "lurking" on > a bulletin board? =46inding out answers to questions I had never considered asking. > Question 3: What detriments do you associate with "lurking" > on a bulletin board? Sifting through the email to find the interesting bits. > Question 4: Are there any similarities between your willingness to > communicate with others in person and your willingness to > to post a message on a bulletin board? There are similarities to using the telephone but not to speaking face to face. The pressure to prepare a question/response which will not offend anyone is greater on email. There is also the inhibiting prospect of making a fool of yourself in front of a lot of people! However email makes it easier to reply to an individual, conversations tend not to be hampered by status. Caroline **=AB=BB**=AB=BB**=AB=BB**=AB=BB**=AB=BB**=AB=BB**=AB=BB** Caroline Parker Principal Project Officer HUSAT Research Institute Loughborough University Tel: +1509 611088 =46ax: +1509 234651 **=AB=BB**=AB=BB**=AB=BB**=AB=BB**=AB=BB**=AB=BB**=AB=BB**
Date: Mon, 2 Oct 1995 18:17:18 -0700 From: rsoppe@cati.csufresno.edu (Richard Soppe) Subject: salinity discussion list The USDA-ARS-Water Management Research Laboratory, Fresno CA, would like to announce the creation of another E-mail discussion list: SALINITY-L Salinity-L focuses on discussions related to salt management in relation to irrigation and drainage. The list has just been created and will include discussions about irrigation management to solve salinity problems, drainage management, load-flow relations, soil hydraulic properties as influenced by salts, crop tolerances to salt and more. To subscribe to the list, send an E-mail message to LISTSERV@UNL.EDU With in the body the following lines: SUBSCRIBE SALINITY-L FirstName LastName Where FirstName LastName are your real names. For more information, contact Richard Soppe or Richard Mead at: Water Management Research Laboratory U.S. Department of Agriculture Agricultural Research Service 2021 South Peach Avenue Fresno, CA 93727-5951 phone: (209)453-3100 fax: (209)453-3122 E-mail: RSoppe@asrr.arsusda.gov E-mail: RMead@asrr.arsusda.gov WWW: http://asset.arsusda.gov/WMRL/WMRL.html
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>From root@crcnis1.unl.edu Wed Oct  4 15:32 EDT 1995
Date: Wed, 4 Oct 1995 14:19:55 -0500
Message-Id: <199510041919.AA00646@crcnis1.unl.edu>
Subject: AGMODELS-L digest 368

Contents:
Re: Lurking Questionnaire. ("Rabi H. Mohtar" <RHM8@PSUVM.PSU.EDU>)



Date: Wed, 4 Oct 95 13:40 EDT From: "Rabi H. Mohtar" <RHM8@PSUVM.PSU.EDU> Subject: Re: Lurking Questionnaire. I would like to note that the word "lurking" is not appropriate for the inactiv e or silent members in this or any other list. Many of the lists have several hundred members and I do not think we should exp ect all of the members to be "vocal". Some are shy because of the lack of know ledge and are there to learn. Still many others do not access their mail daily so by the time they get to it there are already someone who responded to the p osed question. And still those of us who respond to the person directly hoping that the person who posed the question will compile a list of responses and po st them on the list. I go back to the scenario of room discussion, only few participant usually gene rate the bulk of the discussion. Do we call those "lurkers"? Regards, Rabi Mohtar ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Rabi H. Mohtar internet:rhm8@psuvm.psu.edu The Pennsylvania State University phone: (814) 865-2971 208 Agricultural Engineering Building fax: (814) 863-1031 University Park, PA 16802 "change begins with me"
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>From root@crcnis1.unl.edu Thu Oct  5 15:33 EDT 1995
Date: Thu, 5 Oct 1995 14:21:07 -0500
Message-Id: <199510051921.AA05840@crcnis1.unl.edu>
Subject: AGMODELS-L digest 369

Contents:
Re: Lurking Questionnaire.  (Zaitao Pan <panz@iastate.edu>)
Re: Lurking Questionnaire.  (tomas@barran.biocom.com (tomas))



Date: Wed, 04 Oct 1995 14:16:58 CDT From: Zaitao Pan <panz@iastate.edu> Subject: Re: Lurking Questionnaire. Question 1: What are your feelings regarding the phenomenon of "lurking" on bulletin boards? A: My English is not good, but it sounds like negative. I think lurking is rather normal at this information era. Question 2: What benefits do you associate with "lurking" on a bulletin board? A: Learn things out but related to your area. Question 3: What detriments do you associate with "lurking" on a bulletin board? A: For later use. Right now I 'm not work on agronomy yet, but I will a few month from now. Question 4: Are there any similarities between your willingness to communicate with others in person and your willingness to to post a message on a bulletin board? A: Sometimes, I'm afraid too many responses will disturb others in the sense that people have to read it and delete it. and it occupies disk space too. Zaitao Pan Iowa State Univ.
Date: Wed, 04 Oct 95 23:25:39 PDT From: tomas@barran.biocom.com (tomas) Subject: Re: Lurking Questionnaire. Somebody please tell me what's these questions purpose. Do I have to answer them or can I remain as a "lurker"? Thanks, Tomas Barrandeguy. e-mail: tomas@barran.biocom.com
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>From root@crcnis1.unl.edu Fri Oct  6 15:34 EDT 1995
Date: Fri, 6 Oct 1995 14:20:58 -0500
Message-Id: <199510061920.AA02384@crcnis1.unl.edu>
Subject: AGMODELS-L digest 370

Contents:
sensitivity on CERES-WHEAT ("T.MAVROMATIS" <T.Mavromatis@uea.ac.uk>)
Re: Lurking Questionnaire. (Daniel Fuka <dan@quetzalcoatl.com>)
Re: sensitivity on CERES-WHEAT (mike@arrc.ncsu.edu (Mike Munster))
Re: sensitivity on CERES-WHEAT (griggs@brcsun0.tamu.edu)
Re: sensitivity on CERES-WHEAT (mike@arrc.ncsu.edu (Mike Munster))



Date: Thu, 05 Oct 1995 23:36:09 BST From: "T.MAVROMATIS" <T.Mavromatis@uea.ac.uk> Subject: sensitivity on CERES-WHEAT Hallo, I am a Ph.D student and I am working on CERES-WHEAT v2.9 with some crop data from central france. Has anyone out there could inform me about the maximum values that the genetic coefficients could get ? How we can check the sensitivity of the model to soil characteristics in a multi-layer adopted soil-profile and to the applied Nitrogen in the case of more than one fertilizer applications ? Should the sensitivity in that case be applied only in one typical year or in every year of our period considering the different Nitrogen stress that appears in each growing season ? I would really appreciate any response. Theodoros Mavromatis
Date: Thu, 5 Oct 1995 17:17:07 -0600 From: Daniel Fuka <dan@quetzalcoatl.com> Subject: Re: Lurking Questionnaire. Howdy, I guess since I was the person with the most negative response to this questionaire, maybe I should offer some of my thoughts to this discussion one last time. I think that if a person asks a question on a list that I can give an answer to, then it is my obligation to give the answer. This is unless an answer has already been answered in a manor in which I agree with. If I have not checked my mail in some time and find that there has been a discussion on a topic in which I feel that I am qualified to speak, and my opinion has not been addressed, I feel that I am still obligated to give it directly to the person who presented it if not the whole group. I think that this is only right since I am obtaining a large amount of information from the group. If I know little about the subject, or the question has been answered already and I agree with, then there is no point in me contributing. If there are multiple opinions, then I could easily support one or the other with less than 10 seconds of my life wasted by just saying that I support one side or another. A minute would be taken if I wanted to add a reference that I had in the back of my head. This is not a great amount of time to dedicate to a group that provides such a huge resource of human knowledge to me. I think that all members of the list are responsible to give their opinion on issues that they are knowledgeable in. Especially now when it is becoming more popular to utilize list discussions as references in professional journals and in proposals. What we have here is the ability to access information and ideas real time, with no lag while waiting for the journal to be published. If a discussion is referenced, then many will believe that the resulting opinions are that of the members of the list. When I review an article or a proposal and see a reference to a list, I retrieve the archive for the list from that period to see if it is a valid reference. I also pull down the list membership to see who the members are. This list represents some pretty influential people in the agricultural modeling fields, if they are participating in a discussion (either listening or adding opinions) then I would consider any opinions that are addressed a full summary of the entire groups opinions. I know that this is fairly harsh, but I think that by having your name associated as a member of any professional group, club, political party, or list in this case, you are responsible for the views of that organization, be it the KKK, Democratic, Green, or Republican parties, or agmodels-l. You must remember that your name, and more informative, your email address are available to anyone out there who wants to see who is on the list. One other thing that I would like to address. I think that when a question is asked to the list, it should be well thought out, with a little back ground and asking a straight forward question(s). This allows the group to see what research is presently being done, as well as helps people to understand the questions. This does not mean that the posting has to be long, just a few sentences describing the background of the problem or what brought about the questions. I guess that this has wasted enough peoples time, back to modeling. If anyone would like to discuss this "outside" the list, I would be happy to. I imagine that people might be getting sick of this string, and it might be best to move it outside the list so as to not upset anybody trying to get any research accomplished. Dan dan@quetzalcoatl.com My opinions may or may not reflect the opinions of my employer.
Date: Fri, 6 Oct 95 12:19:53 EDT From: mike@arrc.ncsu.edu (Mike Munster) Subject: Re: sensitivity on CERES-WHEAT Theodorus: I cannot speak specifically to CERES-WHEAT, but I can tell you about the sensitivity analysis that we are doing here. We are trying to use the EPIC model to "subtract" differences due to variation in climate and soil. We expect that such an adjustment will allow more powerful detection of yield trends and may allow underlying ecological differences to emerge in regional studies. But of course there is uncertainty in those inputs, and we don't know how big that uncertainty is in relation to the differences we are trying to detect. Thus the need for sensitivity analysis. We are modeling yields for a number of maize fields across Nebraska USA (actual yield data obtained in 1993). We used aerial photos and soil survey maps to estimate the proportion of each field that was occupied by each soil map unit. The map unit gives us the soil series. To look at variability due to soil information, we take the subset of fields that each have just one kind of soil throughout. (This is of course a simplification of the reality in the field). Then we will run the model with three different sets of soil parameters. One set is that provided with EPIC for that soil. If the particular soil is not available in the EPIC list, then we use data from a related soil. Data for the other two runs come from the U.S. Department of Agriculture's National Resources Conservation Service (formerly the Soil Conservation Service). They have a characterization database for many many of the soils in the U.S., and multiple examples of quite a few of them. With this data source, we picked out just the most critical variables: %sand, %silt, organic matter, bulk density, and pH. This information is available by horizon (layer). After running the model we will compare the field-to-field variability with the variability due to soil data inputs. This approach is different from another kind of sensitivity analysis, where you vary parameters one at a time within some arbitrary range. The advantage (we hope!) is that it allows a comparison of realistic uncertainties. If you want to know more and are going to be at the upcoming Agronomy/Soils meetings in St. Louis, stop by and see our poster on Tuesday 31 October. -=|Mike|=-
Date: Fri, 6 Oct 1995 12:02:15 -0500 From: griggs@brcsun0.tamu.edu Subject: Re: sensitivity on CERES-WHEAT Mike, I agree with your comments and approach and want to make sure that you are aware that database tools exist that contain all of the SCS soils for the US in EPIC format. CMSOIL and other tools for EPIC are available through Georgie Mitchell at the Blackland Research Center in Temple, TX , email mitchell@brcsun0.tamu.edu Thanks again for your suggestions, Ray H. Griggs >Theodorus: > >I cannot speak specifically to CERES-WHEAT, but I can tell you about >the sensitivity analysis that we are doing here. We are trying to use >the EPIC model to "subtract" differences due to variation in climate >and soil. We expect that such an adjustment will allow more powerful >detection of yield trends and may allow underlying ecological >differences to emerge in regional studies. > >But of course there is uncertainty in those inputs, and we don't know >how big that uncertainty is in relation to the differences we are >trying to detect. Thus the need for sensitivity analysis. > >We are modeling yields for a number of maize fields across Nebraska USA >(actual yield data obtained in 1993). We used aerial photos and soil >survey maps to estimate the proportion of each field that was occupied >by each soil map unit. The map unit gives us the soil series. To look >at variability due to soil information, we take the subset of fields >that each have just one kind of soil throughout. (This is of course >a simplification of the reality in the field). Then we will run the >model with three different sets of soil parameters. One set is that >provided with EPIC for that soil. If the particular soil is not >available in the EPIC list, then we use data from a related soil. Data >for the other two runs come from the U.S. Department of Agriculture's >National Resources Conservation Service (formerly the Soil Conservation >Service). They have a characterization database for many many of the >soils in the U.S., and multiple examples of quite a few of them. With >this data source, we picked out just the most critical variables: %sand, >%silt, organic matter, bulk density, and pH. This information is >available by horizon (layer). > >After running the model we will compare the field-to-field variability >with the variability due to soil data inputs. > >This approach is different from another kind of sensitivity analysis, >where you vary parameters one at a time within some arbitrary range. >The advantage (we hope!) is that it allows a comparison of realistic >uncertainties. > >If you want to know more and are going to be at the upcoming >Agronomy/Soils meetings in St. Louis, stop by and see our poster on >Tuesday 31 October. > >-=|Mike|=-
Date: Fri, 6 Oct 95 13:37:37 EDT From: mike@arrc.ncsu.edu (Mike Munster) Subject: Re: sensitivity on CERES-WHEAT Ray: Thanks for that message and for your earlier help in getting started. I did _not_ know that those SCS soils were available in EPIC format. Would have saved me a bit of time. Also, by seeing your reply I realized that there wasn't enough information to those who might want to visit the poster in St. Louis. It is M.J. Munster and G.B. Dhakhwa Reducing noise in regional or time-series yield data by means of crop simulation models. -=|Mike|=- <>-<>-<>-<>-<>-<>-<>-<>-<>-<>-<>-<>-<>-<>-<>-<>-<>-<>-<>-<>-<>-<> | MR. MICHAEL J. MUNSTER | <> EMAP-Agricultural Lands phone 919-515-3311 <> | 1509 Varsity Dr. fax 919-515-3593 | <> Raleigh, NC 27606 email mike_munster@ncsu.edu <> | USA | <>-<>-<>-<>-<>-<>-<>-<>-<>-<>-<>-<>-<>-<>-<>-<>-<>-<>-<>-<>-<>-<> > From root@crcnis1.unl.edu Fri Oct 6 13:19:21 1995 > Date: Fri, 6 Oct 1995 11:56:04 -0500 > Originator: agmodels-l@unl.edu > Reply-To: <agmodels-l@unl.edu> > Sender: agmodels-l@unl.edu > Version: 5.5 -- Copyright (c) 1991/92, Anastasios Kotsikonas > From: griggs@brcsun0.tamu.edu > To: Multiple recipients of list <agmodels-l@unl.edu> > Subject: Re: sensitivity on CERES-WHEAT > Content-Length: 2670 > > Mike, > I agree with your comments and approach and want to make sure that you are > aware that database tools exist that contain all of the SCS soils for the > US in EPIC format. CMSOIL and other tools for EPIC are available through > Georgie Mitchell at the Blackland Research Center in Temple, TX , email > mitchell@brcsun0.tamu.edu > Thanks again for your suggestions, > Ray H. Griggs
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>From root@crcnis1.unl.edu Sat Oct  7 16:29 EDT 1995
Date: Sat, 7 Oct 1995 15:16:44 -0500
Message-Id: <199510072016.AA18453@crcnis1.unl.edu>
Subject: AGMODELS-L digest 371

Contents:
     More on "lurking" (ALBERT WEISS <AGME011@UNLVM.UNL.EDU>)



Date: Sat, 07 Oct 95 14:48:25 CDT From: ALBERT WEISS <AGME011@UNLVM.UNL.EDU> Subject: More on "lurking" To me, "lurking" has a negative connotation, it is a sinister type of term. For example," The villain lurked in the shadows waiting for his next victim. " I prefer the term "active" or "passive participant". One can be a passive participant but yet be intellectually active. My perspective is that time dictates how active or passive one will be with regards to responding to posted questions or comments. It seems that many of us have to juggle several projects almost simultaneously. If something is of indirect interest, we may note it and remain passive. If something touches a hot button, then we should respond. Albert Weiss ALBERT WEISS, DEPT. OF AGRICULTURAL METEOROLOGY UNIVERSITY OF NEBRASKA-LINCOLN, LINCOLN,NE 68583-0728 VOICE (402)472-6761, FAX (402)472-6614 E-MAIL AGME011@UNLVM.UNL.EDU
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>From root@crcnis1.unl.edu Sun Oct  8 16:30 EDT 1995
Date: Sun, 8 Oct 1995 15:17:05 -0500
Message-Id: <199510082017.AA25713@crcnis1.unl.edu>
Subject: AGMODELS-L digest 372

Contents:
 ("Manuel Arroyo D.T.I Profesor" <marroyo@abello.dic.uchile.cl>)



Date: Sat, 7 Oct 1995 17:26:57 -0300 (ADT) From: "Manuel Arroyo D.T.I Profesor" <marroyo@abello.dic.uchile.cl> Subject: Dear listers, My name is Manuel Arroyo, <marroyo@abello.dic.uchile.cl>, and I would like to introduce myself to the list. I am an Agricultural Economist coordinating the Arid Land Program of Research at Universidad de Chile. Our main interests are arid land sciences related to research results for natural resources and environmental management. Sincerely, Manuel Arroyo
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>From root@crcnis1.unl.edu Mon Oct  9 16:33 EDT 1995
Date: Mon, 9 Oct 1995 15:19:25 -0500
Message-Id: <199510092019.AA10569@crcnis1.unl.edu>
Subject: AGMODELS-L digest 373

Contents:
Re: sensitivity on CERES-WHEAT (gabriele@bcgn.grignon.inra.fr (Benoit Gabriele))
"lurking" - the word (wstites@fsmail.uwsp.edu)
"lurking" - the word (wstites@fsmail.uwsp.edu)



Date: Mon, 9 Oct 1995 09:14:46 GMT From: gabriele@bcgn.grignon.inra.fr (Benoit Gabriele) Subject: Re: sensitivity on CERES-WHEAT Dear Theodoros, I am also working on a Ph.D., dealing with the assessment of crops' environmental impacts with the CERES models (I am concerned with nitrogen losses, essentially). I thought I could help you as regards your questions on the sensitivity of CERES to soil inputs. Maybe you could precise which is your objective in checking the sensitivity of your model? If you are interested in the effect of nitrogen fertilising (timing and amount) on the wheat yields attained in France, you should try, as Mike Munster suggested, to simulate a variety of soil and climate situations to uncouple the effects of these sources of variability from that due to nitrogen management. I can provide you with some CERES files for typical french soils, in that case. On the other hand, you may wish to assess the influence of the variability in the soil parameters on the simulated yield, for a given soil type. This variability stems from spatial heterogeneity within a field of those paramaters, or from the range they may take in a given soil class. For the first point, I have conducted a simple, uni-dimensional analysis as regards the simulation of the soil water balance, from which you could pick ranges for the parameters' variations (the reference is Soil Sci. Soc. Am. J. 1995. 59:1402-1411). For the second point, you may refer to the approach proposed by Mike Munster; I guess you could obtain from the EPIC soil data base some ranges of variations of soil parameters within a soil class. I hope this sort of qualifies as a response to you, Benoit Gabrielle INRA Bioclimatologie 78850 Thiverval-Grignon France
Date: Mon Oct 9 10:57:33 CDT 1995 From: wstites@fsmail.uwsp.edu Subject: "lurking" - the word In reply to the complaint that "lurking" is not an appropriate term for reading but not contributing to lists: I agree that the word "lurk", with its negative connotations, is not rightly applied to those who read lists for the purpose of self-education. However, it is a well established usage in this environment, and is just one of the wry words computer "geeks" apply to themselves. (The term "geek" is another example.) Freddy Krueger lurking in the woods: bad. Rabi Mohtar "lurking" on agmodels-L: good. Regarding Daniel Fuka's comments, I disagree partially, although he had a number of good points. I do not think anyone can assume members of a list either will speak up or else must agree with the viewpoints that appear. Perhaps there is some justification for thinking they have a duty to speak up, but it goes too far to expect they always will. And I strongly disagree that "membership" in a list is like membership in a political party or the KKK, as Mr. Fuka opined. For example, any interest group list would certainly be monitored by persons with opposite interests. Will Stites Univ. of Wisconsin, Stevens Point wstites@fsmail.uwsp.edu
Date: Mon Oct 9 10:57:33 CDT 1995 From: wstites@fsmail.uwsp.edu Subject: "lurking" - the word In reply to the complaint that "lurking" is not an appropriate term for reading but not contributing to lists: I agree that the word "lurk", with its negative connotations, is not rightly applied to those who read lists for the purpose of self-education. However, it is a well established usage in this environment, and is just one of the wry words computer "geeks" apply to themselves. (The term "geek" is another example.) Freddy Krueger lurking in the woods: bad. Rabi Mohtar "lurking" on agmodels-L: good. Regarding Daniel Fuka's comments, I disagree partially, although he had a number of good points. I do not think anyone can assume members of a list either will speak up or else must agree with the viewpoints that appear. Perhaps there is some justification for thinking they have a duty to speak up, but it goes too far to expect they always will. And I strongly disagree that "membership" in a list is like membership in a political party or the KKK, as Mr. Fuka opined. For example, any interest group list would certainly be monitored by persons with opposite interests. Will Stites Univ. of Wisconsin, Stevens Point wstites@fsmail.uwsp.edu
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>From root@crcnis1.unl.edu Tue Oct 10 19:51 EDT 1995
Date: Tue, 10 Oct 1995 18:38:59 -0500
Message-Id: <199510102338.AA01822@crcnis1.unl.edu>
Subject: AGMODELS-L digest 374

Contents:
Duplicatee post: "lurking" - the word (Chris Butts <cbutts@asrr.arsusda.gov>)
Re[2]: More on "lurking" (snrclark@muccmail.missouri.edu)
Please get back to the Ag Models subject (Daniel Taylor <taylor@brcsun0.tamu.edu>)



Date: Tue, 10 Oct 1995 10:54:24 -0400 (EDT) From: Chris Butts <cbutts@asrr.arsusda.gov> Subject: Duplicatee post: "lurking" - the word I received a duplicate post of the "lurking" message by mr. Stites. Was that actuallythe message sent twice inadvertently by Mr. Stites or an error by the listserv. The reason I ask, is that I had similar problem with another list where messages were sent twice by the server several hours apart. ******************************************************************** * Chris Butts * cbutts@asrr.arsusda.gov * * USDA, ARS ***************************** * National Peanut Research Laboratory * Phone: 912-995-7431 * * 1011 Forrester Dr., SE ***************************** * Dawson, Georgia 31742 * FAX: 912-995-7416 * ********************************************************************
Date: Tue, 10 Oct 95 10:21:13 CST From: snrclark@muccmail.missouri.edu Subject: Re[2]: More on "lurking" >ALBERT WEISS wrote: >To me, "lurking" has a negative connotation, it is a sinister type of term. This weekend I also began to think about the word "lurking." Several others have as well. I believe that it is important to be careful in using words, since connotations may communicate the wrong meaning to persons on the outside of the group or new members. In checking my dictionary, I find the definition to be: LURK 1. To lie in wait, as in ambush. 2. To move furtively; sneak. 3. To exist unobserved or unsuspected. 1) verb To move or go stealthily and furtively. Syn. : sneak, creep, glide, pussyfoot, shirk, skulk, slide, slink, slip, sly, steal Comp.: steal Rel. : crawl, slither, worm, prowl Cont.: barge, strut, swagger, clump, stamp, stump, stride, march, parade While definition #3 may be partially correct, I don't feel that any of these definitions gets to the heart of the matter. Isn't a listserve similar to a newspaper, magazine, or newsletter? My subscription is just that, a SUBSCRIPTION. It allows me to obtain information about topics of interest. My activity is certainly NOT passive. I must read, or at least delete each piece of mail, and if some item is of use to me such as an address or announcement or even a discussion item I must take time to handle it. I would hope that the "NEW-SPEAK" of the "Brave New World" could be kept at bay for at least a few more decades. Sincerely, Clark J. Gantzer (314) 882-0611 snrclark@mizzou1.missouri.edu School of Natural Resources University of Missouri - Columbia $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $$ $$ $$ "... The land ethic simply enlarges the boundaries of the $$ $$ community to include soil, waters, plants, and animals, or $$ $$ collectively: the land." $$ $$ $$ $$ Aldo Leopold $$ $$ $$ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ <A HREF="http://www.missouri.edu/~snr0287/"> Received: from crcnis1.unl.edu by muccmail.missouri.edu (SMTPLINK V2.10.08) ; Mon, 09 Oct 95 15:23:45 CST Return-Path: <root@crcnis1.unl.edu> Received: by crcnis1.unl.edu id AA10599 (5.65c/IDA-1.4.4 for snrclark@muccmail.missouri.edu); Mon, 9 Oct 1995 15:20:03 -0500 Date: Mon, 9 Oct 1995 15:20:03 -0500 Message-Id: <9509098132.AA813267943@muccmail.missouri.edu> Originator: agmodels-l@unl.edu Errors-To: jp@unlinfo.unl.edu Reply-To: agmodels-l@unl.edu Sender: agmodels-l@unl.edu Version: 5.5 -- Copyright (c) 1991/92, Anastasios Kotsikonas From: agmodels-l@unl.edu To: snrclark@muccmail.missouri.edu Subject: Re: More on "lurking"
Date: Tue, 10 Oct 95 14:22:29 CDT From: Daniel Taylor <taylor@brcsun0.tamu.edu> Subject: Please get back to the Ag Models subject One more message about the work "lurking" and I'm out of here.
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>From root@crcnis1.unl.edu Wed Oct 11 23:55 EST 1995
Date: Wed, 11 Oct 1995 18:38:45 -0500
Message-Id: <199510112338.AA25414@crcnis1.unl.edu>
Subject: AGMODELS-L digest 375

Contents:
Unsubscribe (HDPARKHILL@aol.com)



Date: Tue, 10 Oct 1995 21:02:02 -0400 From: HDPARKHILL@aol.com Subject: Unsubscribe Please remove me from your list Best Regards,
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>From root@crcnis1.unl.edu Fri Oct 13 11:21 EST 1995
Date: Fri, 13 Oct 1995 06:07:39 -0500
Message-Id: <199510131107.AA25105@crcnis1.unl.edu>
Subject: AGMODELS-L digest 376

Contents:
Tomato growth models (boccia@unitus.it (Lorenzo Boccia))



Date: Fri, 13 Oct 1995 11:55:39 +0100 From: boccia@unitus.it (Lorenzo Boccia) Subject: Tomato growth models I'm a researcher of Viterbo University - Italy I'm looking for Tomato Growth Models to create a software for enviromental control in GreenHouses 1)If anyone can send me the E-Mail of: - J.W.Jones - E.Dayan=20 - L.H. Allen - H. Van Keulen - H. Challa All these are authors of an article edited on Transaction of the Asae n.2/1991:"A Dinamic tomato growth and yeld model (Tomgro)" 2)If anyone have a model to predict growth of tomato in greenhouse=20 3)If anyone can explain me some particular steps of the model "Tomgro"=20 please contact me to my E-MAIL. Any information would be appreciated.Thanks Lorenzo Boccia Universit=E0 degli Studi della Tuscia 01100 Viterbo, ITALY boccia@unitus.it
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>From root@crcnis1.unl.edu Sat Oct 14 11:25 EST 1995
Date: Sat, 14 Oct 1995 06:08:32 -0500
Message-Id: <199510141108.AA12141@crcnis1.unl.edu>
Subject: AGMODELS-L digest 377

Contents:
peas 'n' beans (wstites@fsmail.uwsp.edu)
Reply: peas 'n' beans (griggs@brcsun0.tamu.edu)



Date: Fri Oct 13 08:59:05 CDT 1995 From: wstites@fsmail.uwsp.edu Subject: peas 'n' beans Dear agmodelers Does anyone know of crop models for peas and snap beans? Thanks, Will Stites Central Wisconsin Groundwater Center 109 Nelson Hall, UW-Stevens Point Stevens Point, Wisconsin 54481 715-346-4501 wstites@uwspmail.uwsp.edu
Date: Fri, 13 Oct 1995 11:17:16 -0500 From: griggs@brcsun0.tamu.edu Subject: Reply: peas 'n' beans Dear Will, EPIC has crop growth parameters for several types of peas and beans. Contact Ms. Georgie Mitchell mitchell@brcsun0.tamu.edu for software and documentation and Dr. Jim Kiniry (USDA-ARS) kiniry@brcsun0.tamu.edu for specific crop growth info. They are both located at the Blackland Research Center, 808 East Blackland Rd., Temple, TX 76502 good luck, Ray Griggs >Dear agmodelers > >Does anyone know of crop models for peas and snap beans? > >Thanks, > > Will Stites > > Central Wisconsin Groundwater Center > 109 Nelson Hall, UW-Stevens Point > Stevens Point, Wisconsin 54481 > 715-346-4501 > wstites@uwspmail.uwsp.edu
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>From root@crcnis1.unl.edu Mon Oct 16 11:22 EST 1995
Date: Mon, 16 Oct 1995 06:03:32 -0500
Message-Id: <199510161103.AA27323@crcnis1.unl.edu>
Subject: AGMODELS-L digest 378

Contents:
Models for Precision Farming (Simon Blackmore <S.Blackmore@cranfield.ac.uk>)



Date: Mon, 16 Oct 1995 11:33:42 +0100 From: Simon Blackmore <S.Blackmore@cranfield.ac.uk> Subject: Models for Precision Farming At 09:49 16/10/95, listserv@unl.edu sent a message saying: > In order to get subscribers talking, I would like to request that each > new subscriber introduce themself as far as name, affiliation, areas of > interest models worked with and one 'burning' issue which could serve > as a focal point of discussion. This introduction, though helpful, is > voluntary. Hello All, As a new subscriber I would like to introduce myself and describe my particular interests, which are essentially the *use* of models in Precision Farming (I am not a modeller). I believe that PF is all about the management of variability, which takes three forms; Spatial variability; How the crop changes across the field Temporal variability; How the crop changes from year to year Predictive variability; How the crop changes this year from what we predicted. If anyone has any thoughts on these issues or is currently working on information tools pertinent to PF, I would enjoy hearing from them. All the best Simon. ============================================= Simon Blackmore, Lecturer in Information Technology Silsoe College, Cranfield University, England The Centre for Precision Farming http://www.cranfield.ac.uk/silsoe/prospect/cpf.htm =============================================
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>From root@crcnis1.unl.edu Wed Oct 18 15:28 EST 1995
Date: Wed, 18 Oct 1995 09:44:03 -0500
Message-Id: <199510181444.AA13004@crcnis1.unl.edu>
Subject: AGMODELS-L digest 379

Contents:
Re: Models for Precision Farming (mckinion@marlin.csrumsu.ars.ag.gov (James McKinion))
Re: Statistical software (Tim Hess <T.Hess@cranfield.ac.uk>)
Introduction (Chris Schroeder <rcs@msilink.com>)
  Thank you (<DSUTTER@WVNVM.WVNET.EDU>)
  Thank you (<DSUTTER@WVNVM.WVNET.EDU>)



Date: Mon, 16 Oct 1995 08:17:03 -0600 From: mckinion@marlin.csrumsu.ars.ag.gov (James McKinion) Subject: Re: Models for Precision Farming >At 09:49 16/10/95, listserv@unl.edu sent a message saying: >> In order to get subscribers talking, I would like to request that each >> new subscriber introduce themself as far as name, affiliation, areas of >> interest models worked with and one 'burning' issue which could serve >> as a focal point of discussion. This introduction, though helpful, is >> voluntary. > >Hello All, >As a new subscriber I would like to introduce myself and describe my >particular interests, which are essentially the *use* of models in Precision >Farming (I am not a modeller). >I believe that PF is all about the management of variability, which takes >three forms; > Spatial variability; How the crop changes across the field > Temporal variability; How the crop changes from year to year > Predictive variability; How the crop changes this year from what we predicted. >If anyone has any thoughts on these issues or is currently working on >information tools pertinent to PF, I would enjoy hearing from them. >All the best >Simon. >============================================= >Simon Blackmore, Lecturer in Information Technology >Silsoe College, Cranfield University, England >The Centre for Precision Farming >http://www.cranfield.ac.uk/silsoe/prospect/cpf.htm >============================================= > > Simon, For what its worth here are my two cents on using crop models in PF. I am the Research Leader of the Crop Simulation Research Unit, USDA, ARS located at Mississippi State, MS. My areas of expertise are crop modeling, expert systems, decision support systems, controlled-environment system design, and real-time data acquisition systems. I recently received a copy of a final task force report and the recommendations of the American Farm Bureau Federation on Global Positioning Systems (GPS) /Geographic Information Systems (GIS) dated March 5, 1995. At the recent Information Agriculture Symposium held at Champaign, IL, in late June, 1995, many of the topics which were addressed in the report were also discussed at the Symposium. The Symposium reached the same conclusions that many of the engineering and technical details have been or are very rapidly being solved, and the only major link that is missing is getting the biology into the system. One of the plenary session speakers, Mr John Reifstack who is a leading farmer from Illinois, said very specifically that the biological information has to be added to the system to make precision agriculture work. In the paper which I presented there on June 29th, I outlined the methodology which the Crop Simulation Research Unit has developed which can fill this knowledge gap and is targeted for precision or site-specific farming, by definition. The Crop Simulation Research Unit of the USDA Agricultural Research Service in collaboration with Mississippi State University, Clemson University, and Texas A&M University has been conducting systems research over the past 25 years in the development of crop models and farm management decision support systems. This research has resulted in the GOSSYM/COMAX cotton crop management system, the GLYCIM soybean system, and the Winter Wheat system. These are process-level, physiologically-based simulation models which predict the growth and yield of cotton and soybean crops in response to soils, weather, and cultural practices (including varieties). These models are combined with expert systems and user-friendly interfaces which hide the complexities of the models and aid the grower in making dynamic, timely decisions affecting crop production. The GOSSYM/COMAX system has been very successful across the U.S. Cottonbelt and the GLYCIM system is just being introduced (the primary scientists who developed GLYCIM are now at the Systems Research Laboratory, USDA-ARS, Beltsville, MD). Both of these models make use of detailed soils information: sand, silt and clay content, bulk density by horizon, water retention curve by horizon, initial water content down to two meters and organic and inorganic nitrogen content down to two meters in depth; all by each soil type within the field. This is as specific as it gets. All major plant physiological systems are modeled in detail also. This type of model is called a process-level model or a tactical model because it can be used to precisely simulate crop growth and yield with real weather and cultural practice inputs and predict crop response to likely future weather scenarios and hypothesized cultural practice inputs. Knowledge-based systems which can respond to the vagaries of historical weather for the current season, the dynamic response of the crop by soil type and local nutrition and soil moisture, and predict the crop response to likely future weather conditions and hypothesized cultural practices directly implies the use of simulation models. Expert systems are not dynamic. Expert systems are static by nature. Give an expert system information today and it will give a current recommendation which is valid for a short time frame. Expert systems are not capable of dynamic predictions which are needed for fertilization, irrigation, pesticide application, etc. decisions. An expert system combined with a crop simulation model can. The GOSSYM/COMAX system can predict as far as SIX weeks in advance when the cotton crop will run out of nitrogen. The GOSSYM/COMAX system can predict as far as FOUR weeks in advance when the cotton crop will run out of water, assuming no rain, and go into severe water stress. It can do this by soil type for each location in a field. Dr. James M. McKinion Ph. 601-324-4375 USDA-ARS FAX 601-324-4371 Crop Simulation Research Unit Email mckinion@csrumsu.ars.ag.gov P. O. BOX 5367 Mississippi State, MS 39762 USA
Date: Mon, 16 Oct 1995 17:29:31 EDT From: Tim Hess <T.Hess@cranfield.ac.uk> Subject: Re: Statistical software I recently posted an invitation for people to advise me on Statistical Packages for analysis of agronomic trials data. The response was very good. For the benefit of those who are interested, I have summaries the responses. Below are listed the names of the packages the people who replied are using, and their comments (if any). I claim no responsibilty for these comments as I have not used any of the packages myself! Where possible, I have included the address of the supplier, so if you are interested, I suggest that you ask them for demo-copies, information, etc. 1. Agrobase Agronomix Software Portage La Prairie Manitoba Canada Blatta@agronomix.mb.ca * Designed for plant breeders. Uses Microsoft FoxPro database 2. CoStat, CoDraw, CoPlot CoHort PO Box 19272 Minneapolis MN55419 USA Fax 612-852-3944 711.61.564@compuserv.com 3. JMP 4. MatLab * ODE and matrix solving. Good graphics 5. Minitab Clecom The Research Park Vincent Drive Edgebaston Birmingham B15 2SQ UK 6. SAS SAS Institute Research Triangle North Carolina USA * Very comprehensive, but has a timed licence and is relatively expensive. * Some have suggested that it is 'Not the easiest to use'. 7. SigmaStat / SigmaPlot Jandel Scientific 8. SPSS * Good for Social Sciences 9. StatGraphics / StatView 10. Statistica 11. Statistix Analytical Software PO Box 12185 Tallahassee FL 32317-2185 USA Fax 904-893-9371 * Easy to use. Does RCB, split plots, regression, etc. Does not do non- * linear regression 12. StatView / Supernova 1918 Bonita Avenue Berkeley CA 94704-1014 USA Fax 510-540-0260 Bonnies@abacus.com 13. Systat Happy Hunting, --------------------------------------------------------------------- Tim Hess Department of Water Management Silsoe College Cranfield University Silsoe Tel (0)1525 863292 Bedford, MK45 4DT Fax (0)1525 863000 UK e-mail t.hess@silsoe.cranfield.ac.uk ----------------------------------------------------------------------
Date: Mon, 16 Oct 1995 21:07:40 -0500 From: Chris Schroeder <rcs@msilink.com> Subject: Introduction At 09:49 16/10/95, listserv@unl.edu sent a message saying: > In order to get subscribers talking, I would like to request that each > new subscriber introduce themself as far as name, affiliation, areas of > interest models worked with and one 'burning' issue which could serve > as a focal point of discussion. This introduction, though helpful, is > voluntary. I'd like to introduce myself to the group. I am with a private consulting firm called Agricultural Education & Consulting (AEC). Much of my work involves helping agribusinesses develop strategies for how they will incorporate information technology into their delivery of products and services. I am also very involved in a project called CCNet (http://www.prairienet.org/SiliconPrairie/info_hwy.html#CCNetInfo) that is looking at the use of high speed network connectivity throughout the community. Within that project we have a group that focuses on agricultural applications. A recent project was the development of the Cyberfarm demonstration (http://w3.ag.uiuc.edu/INFOAG/cyberfarm/) that was a part of the Information Agriculture Conference that was in Champaign, Illinois this last June. My interests in this listserv relate to understanding the information infrastructure that will be needed to support the vast array of potential applications in agriculture. That is, how is the necessary data captured, transmitted, processed, and used by different players in the sector. I have enjoyed "lurking" and look forward to participating more. Chris ======================================================== Chris Schroeder AEC/Centrec 3 College Park Court Savoy, IL 61874 Phone (217)352-1190 Fax (217)352-1425 http://www.centrec.com/~centrec/
Date: Mon, 16 Oct 1995 22:32:14 -0400 (EDT) From: <DSUTTER@WVNVM.WVNET.EDU> Subject: Thank you I would like to take a second to thank everyone who participated in the "lurking" research that we were conducting here at West Virginia. Your responses have been quite helpful and the discussion that sparked from the survey was both helpful and insightful. If anyone who is a new subscriber is interested in participating, please contact me at dsutter@wvnvm.wvnet. edu . Again, we appreciate all of your help and mail, and encourage anyone who hasn't had the chance to take a look at the survey, or hasn't responded, to take a moment to do so. Thank You Deirdre L. Sutter Graduate Student West Virginia University Department of Communiation Studies e-mail dsutter@wvnvm.wvnet.edu phone: (304) 293-3905
Date: Mon, 16 Oct 1995 22:39:55 -0400 (EDT) From: <DSUTTER@WVNVM.WVNET.EDU> Subject: Thank you I wanted to take the time to thank everyone who has responded to the "lurking" survey that was posted on this bulliten board. All of the information that you supplied was of great use, and the discussions were not only helpful and informative, but entertaing as well! I encourage anyone who has not seen the survey, or who has not yet had the chance to complete it, to do so. I would be more than happy to forward a copy to you. I can be contacted at dsutter@wvnvm.wvnet.edu . Again, thank you all for your time. You have been more than helpful and your input is greatly appreciated. Sincerely, Deirdre L. Sutter Graduate Student, West Virginia University Department of Communication Studies phone (304) 293-3905 e-mail dsutter@wvnvm.wvnet.edu
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>From root@crcnis1.unl.edu Thu Oct 19 16:51 EST 1995
Date: Thu, 19 Oct 1995 11:31:20 -0500
Message-Id: <199510191631.AA10890@crcnis1.unl.edu>
Subject: AGMODELS-L digest 380

Contents:
Re: Introduction ("E. John Sadler" <sadler@sunbrn.florence.ars.usda.gov>)



Date: Thu, 19 Oct 1995 12:17:49 +0000 From: "E. John Sadler" <sadler@sunbrn.florence.ars.usda.gov> Subject: Re: Introduction Steve, Would you be interested in providing an ARS peer review for the chapter on predicting crop yield variability to be presented at the St. Louis meeting? I am using attachments for the document and form, sending them via e-mail, and receiving the form via fax if possible. If not, we do it the old way. John Sadler ============================================================== E. John Sadler USDA-ARS sadler@florence.ars.usda.gov Coastal Plains Soil, Water, and Plant Resarch Center 803-669-5203x112 (voice) 2611 West Lucas St. 803-669-6970 (fax) Florence, SC 29501-1241 ==============================================================
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>From root@crcnis1.unl.edu Fri Oct 20 16:48 EST 1995
Date: Fri, 20 Oct 1995 11:32:02 -0500
Message-Id: <199510201632.AA05369@crcnis1.unl.edu>
Subject: AGMODELS-L digest 381

Contents:
Inadvertent distribution ("E. John Sadler" <sadler@sunbrn.florence.ars.usda.gov>)



Date: Thu, 19 Oct 1995 12:21:08 +0000 From: "E. John Sadler" <sadler@sunbrn.florence.ars.usda.gov> Subject: Inadvertent distribution Everyone, My apologies for that last distribution. I used 'reply' to Steve Rawlins' message and Pegasus puts the list in the 'To' field rather than the original sender. Sorry for my oversight cluttering up the ether. John Sadler ============================================================== E. John Sadler USDA-ARS sadler@florence.ars.usda.gov Coastal Plains Soil, Water, and Plant Resarch Center 803-669-5203x112 (voice) 2611 West Lucas St. 803-669-6970 (fax) Florence, SC 29501-1241 ==============================================================
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>From root@crcnis1.unl.edu Tue Oct 24 15:22 EST 1995
Date: Tue, 24 Oct 1995 10:06:45 -0500
Message-Id: <199510241506.AA03717@crcnis1.unl.edu>
Subject: AGMODELS-L digest 382

Contents:
Re: Forwarded mail (Tom Hodges <thodges@beta.tricity.wsu.edu>)



Date: Fri, 20 Oct 1995 14:36:23 -0700 (PDT) From: Tom Hodges <thodges@beta.tricity.wsu.edu> Subject: Re: Forwarded mail If you are planning to be at the American Society of Agronomy Annual Meetings in St. Louis, Missouri then consider attenting the Software Scene Committee business meeting on Tuesday evening (Oct. 31, 7:30pm, America's Center, room 121). A major item will be the future role of computers, software, and networks in agriculture and the ASA/CSSA/SSSA. We would appreciate getting ideas from a wide range of people. Tom Hodges, Software Scene Coordinator, 1994-1995 thodges@beta.tricity.wsu.edu
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>From root@crcnis1.unl.edu Tue Oct 31 09:37 EST 1995
Date: Tue, 31 Oct 1995 03:13:09 -0600
Message-Id: <199510310913.AA19534@crcnis1.unl.edu>
Subject: AGMODELS-L digest 383

Contents:
ESA 4th Conference '96 - The Netherlands (Ruud Verkerke <D.R.VERKERKE@ab.dlo.nl>)



Date: Tue, 31 Oct 1995 09:50:30 +0000 (GMT) From: Ruud Verkerke <D.R.VERKERKE@ab.dlo.nl> Subject: ESA 4th Conference '96 - The Netherlands ------------------------------------------------------------------------------- E U R O P E A N S O C I E T Y F O R A G R O N O M Y (E S A) ------------------------------------------------------------------- ESA 4th Congress 7 - 11 July 1996 - Chairman: dr. Hubert Spiertz Veldhoven - Wageningen, The Netherlands ------------------------------------------------------------------- Wageningen, 31 October 1995 The fourth CONGRESS of the EUROPEAN SOCIETY for AGRONOMY will be held from 7-11 July 1996 in the Congress centre Koningshof in Veldhoven, The Netherlands. Organization of the Congress: - DLO Research Institute for Agrobiology and Soil Fertility (AB-DLO) - C.T. de Wit Graduate School for Production Ecology (WAU-PE) - Research station for Arable Farming and Field Production of Vegetables (PAGV) The Congress will bring together about 400 scientists, primarily from European countries, and will provide a representative picture of the direction in which agricultural research and agronomy in an expanding Europe is moving or has to move. A General Plenary Session will address: LAND USE, NATURAL RESOURCES AND AGRICULTURAL PRODUCTION IN AN EXPANDING EUROPE. Thereafter three main themes will be introduced in a plenary session, and elaborated in parallel oral and poster sessions: 1. AGRO-ECOLOGICAL STUDIES AND CLIMATE CHANGE 1.1. Agro-ecological characterization and climate change 1.2. Agro-ecological characterization and water limitation 1.3. Agro-ecological characterization and adaptation of crops. 2. INTEGRATED AND ECOLOGICAL AGRICULTURE 2.1. Designing farming systems: methodological aspects 2.2. Resource use at cropping system level 2.3. Resource use at crop level 3. DYNAMICS OF NUTRIENTS AND ORGANIC MATTER 3.1. Soil fertility, organic matter and C-dynamics 3.2. Phosphate uptake, accumulation and losses 3.1. Nitrogen transformation and utilization A productive mix with subjects channeled through the existing Scientific Divisions of ESA is planned. Optional trips to field experiments on sustainable agriculture, to the Dutch 'Westland' (the greenhouse horticulture production area) and to Dutch Agricultural Research Centres will be provided. A leisure programme is available for accompanying persons. Those wishing to present a poster or paper are invited to submit an informative abstract (200-250 words) to the Scientific Secretariat before 1 December 1995. The abstracts will be reviewed by the Scientific Committee. Instructions to authors will be sent for accepted contributions, 15 January 1996. In order to provide a book of abstracts at the start of the Congress, each author is required to submit a camera ready two-page abstract by 1 April 1996. Selected contributions will be published as full papers in a special Proceedings issue. The Congress centre 'Koningshof' in Veldhoven is having excellent facilities for formal and informal exchange of news and views. Its location in a forested area will create the right atmosphere for scientific and social interactions. A preliminary indication for the registration fee, including all meals and accommodation is DFL 1300 (about 600 ECU). (PhD-)Students and participants from Middle and Eastern Europe can apply for a reduced rate. If you are interested in the Congress or its theme, please return the reply form to the Organizing Secretariat and you will receive the S E C O N D C I R C U L A R with further information. --------------------------------------------------------------------- (Use the numbers below to complete the REPLY FORM/PROVISIONAL REGISTRATION) Themes/Sessions of ESA 4th Congress 1.1 Agro-ecological characterization and climate change 1.2 Agro-ecological characterization and water limitation 1.3 Agro-ecological characterization and adaptation of crops 2.1 Designing farming systems: methodological aspects 2.2 Resource use at cropping system level 2.3 Resource use at crop level 3.1 Soil fertility, organic matter and C-dynamics 3.2 Phosphate uptake accumulation and losses 3.3 Nitrogen transformation and utilisation ESA Scientific Divisions 1. Crop physiology, production and management 2. Agroclimatology and modelling 3. Plant-soil relationships 4. Crop quality and post-harvest physiology 5. Cropping and farming systems 6. Agriculture-environment relationships ============== REPLY FORM / PROVISIONAL REGISTRATION ============= E U R O P E A N S O C I E T Y F O R A G R O N O M Y (E S A) ------------------------------------------------------------------- ESA 4th Congress 7 - 11 July 1996 - Chairman: dr. Hubert Spiertz Veldhoven - Wageningen, The Netherlands ------------------------------------------------------------------- Name: ................................................. Organization: ......................................... Address: .............................................. Code/City: ............................................ Country: .............................................. Telephone: ............................................ Fax: .................................................. E-mail: ............................................... Y/N I intend to participate Y/N I wish to contribute Y/N oral paper to Theme nr. ... or Division nr. ... Y/N poster to Theme nr. ... or Division nr. ... Y/N Please send me further information Y/N I am member of ESA Y/N Please send details on ESA membership Date: ................................ ====================== End Reply Form =========================== PLEASE COMPLETE THE REPLY FORM AND RETURN IT BY E-MAIL or... PRINT THE REPLY FORM AND SEND IT TO THE ORGANIZING SECRETARIAT: Kongresservice Brabant P.O. Box 140, NL-5500 AC Veldhoven, The Netherlands Telephone: +31 40 254 71 71 Fax : +31 40 254 55 15 E-mail : congress@koningshof.nl ==================== Submission of Abstracts ======================== Submission of Abstracts (200-250 words) before 1 December 1995 to the SCIENTIFIC SECRETARIAT: Dr. Siebe van de Geijn AB-DLO, P.O. Box 14, NL-6700 AA Wageningen, The Netherlands Telephone: +31 317 47 57 31 Fax : +31 317 42 31 10 E-mail : esa96@ab.dlo.nl =================================================================== E U R O P E A N S O C I E T Y F O R A G R O N O M Y (E S A) ------------------------------------------------------------------- ESA 4th Congress 7 - 11 July 1996 - Chairman: dr. Hubert Spiertz Veldhoven - Wageningen, The Netherlands ------------------------------------------------------------------- O R G A N I Z A T I O N C O M I T T E E : BOARD Dr. Hubert Spiertz (AB-DLO) Prof.dr. Louise Fresco (WAU-Agronomy) Dr. Siebe van de Geijn (AB-DLO) Prof.dr. Rudy Rabbinge (WAU-TPE) Dr. Kees Rijniersce (PAGV) EXECUTIVE SECRETARIAT Dr. Siebe van de Geijn (AB-DLO) Dr. Martin van Ittersum (WAU-TPE) Dr. Theo Jetten (WAU-PE) Dr. Kees Rijniersce (PAGV) Ruud Verkerke (AB-DLO) ============================================================ >>> PLEASE FORWARD THIS MESSAGE TO COLLEAGUES WHO MIGHT BE INTERESTED IN THE CONFERENCE ============================================================
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AGROMOMY Homepage @ SunSITE


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