AGMODELS-L: 199512XX

is the compilation of discussion during Dec 95

via AB4EL Web Digests @ SunSITE

AGROMOMY Homepage @ SunSITE


>From root@crcnis1.unl.edu Fri Dec  1 08:55 EST 1995
Date: Fri, 1 Dec 1995 02:43:26 -0600
Message-Id: <199512010843.AA12212@crcnis1.unl.edu>
Subject: AGMODELS-L digest 402

Contents:
Linseed modelling (rcasa@unitus.it (Raffaele Casa))



Date: Thu, 30 Nov 1995 11:29:38 +0100 From: rcasa@unitus.it (Raffaele Casa) Subject: Linseed modelling Dear ag-modelers, here at Viterbo we are considering the possibility of starting a preliminary study on the modelling of linseed (Linum usitatissimum). Not to start from scratch we were thinking of adapting the water limited version of SUCROS, at the beginning. I would be really grateful to receive any suggestion and/or news of existing specific linseed models. Thanks Raffaele Casa **************************************************** Raffaele Casa Dipartimento Produzione Vegetale Universita' della Tuscia Via S.Camillo de Lellis 01100 Viterbo, ITALY Tel.: +39 761 357 559 Fax.: +39 761 357 558 E-mail: rcasa@unitus.it ****************************************************
End of Digest
>From root@crcnis1.unl.edu Sun Dec  3 21:08 EST 1995
Date: Sun, 3 Dec 1995 14:54:27 -0600
Message-Id: <199512032054.AA06452@crcnis1.unl.edu>
Subject: AGMODELS-L digest 403

Contents:
Crop modeling under arid conditions (alexander.nidorf@linacre.oxford.ac.uk (Alexander Nidorf))



Date: Sun, 03 Dec 1995 18:45:32 +0000 From: alexander.nidorf@linacre.oxford.ac.uk (Alexander Nidorf) Subject: Crop modeling under arid conditions Currently I'm a graduate student at the Environmental Change Unit, University of Oxford. As part of masters thesis I'd like to model the effects of projected climate change on agricultural output in the Imperial Valley, California. I need some advice on modeling soil moisture and evapotraspiration in extreme conditions. If anyone has any experience in this area I'd like to ask: 1. What models have been developed to predict the effects of climate/temperature on irrigation? Most of my experience has been with soil erosion models. Have irrigation models been developed that can be used for this sort of study? 2. What crop models deal well with heat stress and drought? I'll be in El Centro over Christmas. If anyone on this list lives in the Imperial Valley or San Diego County areas please let me know. I'd like to discuss these issues further with someone working in the area. Thanks, Alex Nidorf Environmental Change Unit School of Geography University of Oxford
End of Digest
>From root@crcnis1.unl.edu Mon Dec  4 21:51 EST 1995
Date: Mon, 4 Dec 1995 15:34:37 -0600
Message-Id: <199512042134.AA23606@crcnis1.unl.edu>
Subject: AGMODELS-L digest 404

Contents:
Marketing Models ("Cox, Peter" <CoxP@tbacrm001.prose.dpi.qld.gov.au>)
INTRODUCTION ("Cox, Peter" <CoxP@tbacrm001.prose.dpi.qld.gov.au>)
      Re: Crop modeling under arid conditions (Graham Russell <GRUSSELL@srv0.bio.ed.ac.uk>)
      Re: Crop modeling under arid conditions ("Guido Wyseure" <G.C.L.Wyseure@newcastle.ac.uk>)
Re: Crop modeling under arid conditions (rama@brcsun0.tamu.edu (Ramanarayanan Tharacad))



Date: Mon, 04 Dec 95 09:02:00 gmt From: "Cox, Peter" <CoxP@tbacrm001.prose.dpi.qld.gov.au> Subject: Marketing Models In response to Jim Meade's question about the availability of marketing models, use of @RISK etc, we have used @RISK to begin to look at the question of the simultaneous management of price and production risk. A draft of our paper (by Don Prentis, Phil Holmes and myself) for the forthcoming 8th Australian Agronomy Conference is available on the web at http://www.peg.apc.org/~pgcox/price.html For more information about this, contact Don Prentis on Compuserve: 100242.3623@compuserve.com Another useful reference is: Stephen Grey (1995), Practical risk assessment for project management, Wiley Series in Software Engineering Management. Grey uses @RISK to construct his examples. Peter Cox Mail: APSRU, PO Box 102, Toowoomba, Queensland 4350, Australia Email: peterco@apsrusg.sth.dpi.qld.gov.au Phone: +61 (076) 31 4298 Fax +61 (076) 33 2678 WWW www.peg.apc.org/~pgcox/
Date: Mon, 04 Dec 95 09:37:00 gmt From: "Cox, Peter" <CoxP@tbacrm001.prose.dpi.qld.gov.au> Subject: INTRODUCTION >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 have been working in Australia with CSIRO for the last 7 years: first on the SIRATAC cotton pest management system (an early example of an agricultural DSS) with the Cotton Research Unit in New South Wales, and more recently with the Agricultural Production Systems Research Unit (APSRU) modelling group in Queensland. My major interest has been the use of models (both the model development process and the use of model-based tools) to facilitate communication between professional researchers (scientists) and practitioners (usually farmers, but also advisers and policy-makers). This approach has had something of a chequered history. For a variety of reasons, it has got caught up (at least in Australia) with the provision of DSS (by scientists for farmers), thus reinforcing an outmoded notion of extension practice just as extension has moved on towards approaches that emphasise participation in problem definition, the design of solutions, and implementation. Thus, from an extension point of view, these technologies rather miss the point. We discuss some of these issues in a paper for the 2nd international symposium on Systems Approaches for Agricultural Development (SAAD2) which is taking place at IRRI at the moment. A copy of our paper, On the articulation of simulation and heuristic models of agricultural production systems (by Kevin Parton, Art Shulman, Peter Ridge and myself), can be viewed on the web at: www.peg.apc.org/~pgcox/artic.html "The relative emphasis on the accuracy of technical models may be misplaced if they are to be used to facilitate performance in a practical situation or to promote emancipation by providing a framework that allows individuals to work through their own problems." Peter Cox Mail: APSRU, PO Box 102, Toowoomba, Queensland 4350, Australia Email: coxp@tbacrm001.prose.dpi.qld.gov.au Phone: +61 (076) 31 4298 Fax +61 (076) 33 2678 WWW www.peg.apc.org/~pgcox/
Date: Mon, 4 Dec 1995 09:19:12 +0000 From: Graham Russell <GRUSSELL@srv0.bio.ed.ac.uk> Subject: Re: Crop modeling under arid conditions Alexander Nidorf wrote: '1. What models have been developed to predict the effects of climate/temperature on irrigation? Most of my experience has been with soil erosion models. Have irrigation models been developed that can be used for this sort of study?' The problem about working with water use in dry hot areas is that conventional implementations of mechanistic evaporation formulae (e.g. Penman-Monteith) can find it difficult to cope with advection, the localised change in humidity in the boundary layer of the irrigated crop, the atmospheric stability and the large differrences between leaf and air temperature. I am not familiar with the literature but I guess there must be data from the centre pivot irrigation schemes in Saudi Arabia where wheat is grown with air temperatures approaching 45 degrees C. Good luck with your study. 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
Date: Mon, 4 Dec 1995 13:28:52 +0000 From: "Guido Wyseure" <G.C.L.Wyseure@newcastle.ac.uk> Subject: Re: Crop modeling under arid conditions Dear Alex, 1) The PARCH-model ( R.G. Bradley and N.M.J. Crout, Tropical Crops Research Unit, University of Nottingham, Sutton Bonnington LE12 5RD (UK)) has been developped with ODA (via NRI) and EU-funding. This model is especially developped for sorghum under rainfed arid and semi-arid conditions. Contact Neil Crout at Sutton Bonnington. (tel +44 1602 516253 or PARCH@SBN2.NOTT.AC.UK ). 2) The problem of soil evaporation and transpiration of sparse crops in semi-arid conditions has been modelled in SWEAT (Carl Daamen and Lester Simmonds, Dep. of Soil Science. Univerisity of Reading ) Contact Carl Daamen (+44 1734 316557 or C.C.Daamen@reading.ac.uk ) 3) We are modelling rainwater harvesting, which includes the PARCH -model. Our model is virtually ready, but not yet released (this sounds like Bill Gates...). M.D. Young, J.W Gowing and me at Newcastle. There are other models, but above gives you the angle of the ODA-sponsored effort for the tropics managed by Natural Resource Institute (Chatham). A useful reference (mostly Australian) is 'Climatic risk in crop production: models and management for the semi-arid tropics and subtropics' ed. by Muchow R.C. and J.A. Bellamy (CABi- Wallingford UK). I hope this helps you. Regards, Guido *************************************************************** Kind Regards from, Dr. Guido C.L. Wyseure Department of Agricultural and Environmental Science The University, Newcastle upon Tyne NE1 7RU (UK) *************************************************************** Tel +44 191 2226942 (direct) (Dep. secretary 2226601) Fax +44 191 2225228 (depart. fax) E-mail G.C.L.Wyseure@Newcastle.ac.uk ***************************************************************
Date: Mon, 4 Dec 1995 09:15:45 -0600 From: rama@brcsun0.tamu.edu (Ramanarayanan Tharacad) Subject: Re: Crop modeling under arid conditions Dear Alex: > 1. What models have been developed to predict the effects of > climate/temperature on irrigation? Most of my experience has been with soil > erosion models. Have irrigation models been developed that can be used for > this sort of study? I am not sure what kind of irrigation models you are expecting to work with. EPIC is a "comprehensive" hydrologic/water quality model with a robust crop growth component. Runoff is estimated by SCS curve number method and erosion by USLE or MUSLE equlations. Dr. Jimmy Williams is the leading author of the model. It has a good automatic irrigation component wherein you can define the desired rootzone moisture deficit and the level of replenishment desired, and model will automatically irrigate the field. I have used this option and it worked satisfactorily for Oklahoma conditions. I have not tested it for exterme conditions you are interested in. But, I don't foresee any problems with it. > > 2. What crop models deal well with heat stress and drought? EPIC has water stress, nutrient stress and aeration stress (under water logged conditions). I know Dr. Williams worked with a couple of scientists from India and added a new drought stress component to EPIC. I am not aware of the details yet. But, I am sure Dr. Williams will be more than happy to work with you on this. His telephone number is (817) 770-6508 or (817) 770-500 (secretary). His email address is williams@brcsun0.tamu.edu. You may contact Ms. Nanacy Sammons (sammons@brcsun0.tamu.edu) or Ms. Georgie Mitchell (mitchell@brcsun0.tamu.edu) for a list of publications on EPIC. Good Luck!! T.S. Ramanarayanan, PhD Research Associate Blackland Research Station 808 E. Blackland Road Temple, TX 76502. (817) 770-6680 Fax: (817) 770-6561.
End of Digest
>From root@crcnis1.unl.edu Tue Dec  5 22:08 EST 1995
Date: Tue, 5 Dec 1995 15:48:54 -0600
Message-Id: <199512052148.AA13164@crcnis1.unl.edu>
Subject: AGMODELS-L digest 405

Contents:
RE: Peter Cox's INTRODUCTION ("Cox, Peter" <CoxP@tbacrm001.prose.dpi.qld.gov.au>)
HELP (Macorn95@aol.com)
Positions vacant ("P. Grace" <gracep@adl.soils.csiro.au>)
Vacancies ("P. Grace" <gracep@adl.soils.csiro.au>)
Re: Vacancies (bb@pgsun01.uni-trier.de (Bodo Bernsdorf))
Linseed modelling (rcasa@unitus.it (Raffaele Casa))
Re: HELP ("John P. Bolte" <boltej@ccmail.orst.edu>)
RTFM? (wstites@fsmail.uwsp.edu)
Re: Vacancies (Nelson Buck <nbuck@mail.bcpl.lib.md.us>)



Date: Tue, 05 Dec 95 10:21:00 gmt From: "Cox, Peter" <CoxP@tbacrm001.prose.dpi.qld.gov.au> Subject: RE: Peter Cox's INTRODUCTION >On 3 December, John Sadler wrote: > >I was intrigued by your quoted text. I assume it came from the paper >(I'm on a slow link, and haven't gotten it). My first impression of >the quote is that I disagree, but I'm not sure I understand all of >the quote itself. Would you expand on it some? I guess that the >first part bothers me the most. The successful use of models in many >practical situations depends on the accuracy of the model. Assuming >that sufficient mechanistic structure exists in the model, letting >someone work a problem out (learn) could occur with a relatively >accurate model, even if it were not absolutely accurate. I look >forward to your reply. John, Thanks for that. Yes, the quote was from the abstract of our paper for SAAD2. The point we are trying to make is that it is sometimes desirable to trade off accuracy (precision) for other qualities e.g. transparency. Thus, a scientific or technical model may require relatively greater emphasis on accuracy in order to describe the behaviour of a natural system. However, the purpose of a farmer is not accuracy in description but spotting and exploiting (acting upon) opportunities for action. It is far from obvious that this purpose is best served by more accurate models. Transparency and explanatory power become relatively more important. This argues for the use of simpler model formulations if the purpose of our models is practical, not technical. Some of these arguments are made in our paper. Mail: APSRU, PO Box 102, Toowoomba, Queensland 4350, Australia Email: coxp@tbacrm001.prose.dpi.qld.gov.au Phone: +61 (076) 31 4298 Fax +61 (076) 33 2678 WWW www.peg.apc.org/~pgcox/
Date: Mon, 4 Dec 1995 23:41:40 -0500 From: Macorn95@aol.com Subject: HELP WOULD SOMEONE PLEASE SEND DIRECTIONS ON HOW TO GET OFF THE AGMODELS LIST. I CAN' T FIND THE CORRECT COMMANDS
Date: Tue, 5 Dec 1995 15:39:32 +1030 (CST) From: "P. Grace" <gracep@adl.soils.csiro.au> Subject: Positions vacant This is information relating to 2 modelling positions........ POSTDOCTORAL FELLOWS / RESEARCH OFFICERS in the COOPERATIVE RESEARCH CENTRE FOR WEED MANAGEMENT SYSTEMS, AUSTRALIA The CRC has been established to address the adverse effect of weeds on the Australian environment and economy. Exciting opportunities exist for researchers to join dynamic multi-disciplinary teams in the following programs: * annual cropping systems * perennial pasture ecosystems * natural ecosystems * education * communication and adoption The CRC comprises core partners - UNIVERSITY OF ADELAIDE, NSW AGRICULTURE, and CSIRO DIVISION OF ENTOMOLOGY , and other participants including GRDC, Avcare, CSIRO Plant Industry, W.A. Department of Agriculture, Charles Sturt University, University of New England, Department of Conservation and Natural Resources Vic. The following positions are available immediately on an initial 3 year appointment. RESEARCH OFFICER (BIO ECONOMIC MODELLING) in the AGRICULTURAL RESEARCH AND VETERINARY CENTRE, NSW AGRICULTURE, ORANGE, to develop bio economic modelling expertise that will enable the benefits of improved weed management technology in pasture and cropping systems to be evaluated. An important feature of this position will be the development of integrated economic models that provide rational decision support and evaluate potential benefits and technology impact assessment. The successful applicant will have a relevant PhD with experience in mathematical programming and econometric methodology. Demonstrated capacity for innovative research, well developed communication skills and a current drivers' licence are essential. Experience in spreadsheet modelling would be an advantage. For further details contact: Dr. Richard Medd Fax 61-63-913899 e mail meddr@agric.nsw.gov.au POST DOCTORAL FELLOW (POPULATION ECOLOGY MODELLING) in the CSIRO DIVISION OF ENTOMOLOGY, CANBERRA, to lead the development of general and specific interactive models for weeds of perennial pastures and natural ecosystems. In particular, there will be an emphasis on developing models for pasture weeds and woody shrubs where field data are already available. The successful applicant will have a PhD in ecological modelling of population or community dynamics, preferably in weed or plant-herbivore systems or with an emphasis on management of invasive species. A knowledge of advanced modelling using individual based models, matrix models and model hierarchies would be an advantage. Also, field experience and the ability to work independently will be well regarded. For further details contact: Dr. Andrew Sheppard/Dr. Richard Groves Fax. 61-6-246 4177 e mail andys@ento.csiro.au/richardg@pican.pi.csiro.au SALARY: POST DOCTORAL FELLOW $37,000 - $40, 000 APPLICATIONS, IN DUPLICATE quoting relevant reference number and giving full personal particulars (including whether candidates hold permanent Australian residency status), details of qualifications, names and full addresses of 3 referees should reach: Director CRC Weed Management Systems University of Adelaide Waite Campus Private Mail Bag 1, GLEN OSMOND SA 5064 no later than 24 January, 1996. Peter Ninnes Executive Officer CRC for Weed Management Systems Waite Campus, University of Adelaide phone (08) 3036590 fax (08) 3037125
Date: Tue, 5 Dec 1995 15:50:49 +1030 (CST) From: "P. Grace" <gracep@adl.soils.csiro.au> Subject: Vacancies Hi folks I recently posted 2 modelling positions on the server. Can someone give me a leg into any other listservers for another 5 positions available here in Australia ...plant pathologist, weed ecologist, reveg. ecologist, population biologist and resource economist, or if I forwarded them on to you could you post them as you wish you wish. Sorry to drop in with this non modelling info. but they are good opportunities for all scientists. Peter Grace
Date: Tue, 5 Dec 1995 08:50:19 +0100 From: bb@pgsun01.uni-trier.de (Bodo Bernsdorf) Subject: Re: Vacancies Hello Peter, Thanks for your offer below. Maybe it is a good idea to post them to the soil erosion discussion list. That is because there are a lot of modellers, ecologists and agricultural specialists on that list. Depends on you. The adress is: se-list@uni-trier.de Wish there will be some jobs left for me after I'll finished my doctorate work... Bye for now, Bodo > From root@crcnis1.unl.edu Tue Dec 5 06:32 MET 1995 > Date: Mon, 4 Dec 1995 23:20:23 -0600 > Originator: agmodels-l@unl.edu > Version: 5.5 -- Copyright (c) 1991/92, Anastasios Kotsikonas > From: "P. Grace" <gracep@adl.soils.csiro.au> > To: Multiple recipients of list <agmodels-l@unl.edu> > Subject: Vacancies > > Hi folks > I recently posted 2 modelling positions on the server. Can someone give me a leg > into any other listservers for another 5 positions available here in Australia > ...plant pathologist, weed ecologist, reveg. ecologist, population biologist and resource > economist, or if I forwarded them on to you could you post them as you wish > you wish. Sorry to drop in with this non modelling info. but they are good > opportunities for all scientists. > Peter Grace > > > ================================================================= Dipl.-Geogr. Phone : +49 (0)651/201-4524 Bodo Bernsdorf or : +49 (0)651/201-4525 University of Trier FAX : +49 (0)651/201-3976 Applied Physical Geography E-Mail: bb@uni-trier.de GIS-Laboratory or: bernsdor@pcmail.uni-trier.de D-54286 Trier/Germany GPS: +49.744453 +006.684998 =================================================================
Date: Tue, 5 Dec 1995 14:30:49 +0100 From: rcasa@unitus.it (Raffaele Casa) Subject: Linseed modelling Dear ag-modelers, here at Viterbo we are considering the possibility of starting a preliminary study on the modelling of linseed (Linum usitatissimum). Not to start from scratch we were thinking of adapting the water limited version of SUCROS, at the beginning. I would be really grateful to receive any suggestion and/or news of existing specific linseed models. Thanks Raffaele Casa **************************************************** Raffaele Casa Dipartimento Produzione Vegetale Universita' della Tuscia Via S.Camillo de Lellis 01100 Viterbo, ITALY Tel.: +39 761 357 559 Fax.: +39 761 357 558 E-mail: rcasa@unitus.it ****************************************************
Date: Tue, 05 Dec 95 08:34:37 PST From: "John P. Bolte" <boltej@ccmail.orst.edu> Subject: Re: HELP To unsubscribe, send a message containing the following: UNSUBSCRIBE AGMODELS-L Send to: listserv@unl.edu (NOT the agmodels list!) ______________________________ Reply Separator _________________________________ Subject: HELP Author: <agmodels-l@unl.edu> at Internet_gateway Date: 12/4/95 8:43 PM WOULD SOMEONE PLEASE SEND DIRECTIONS ON HOW TO GET OFF THE AGMODELS LIST. I CAN' T FIND THE CORRECT COMMANDS
Date: Tue Dec 5 11:31:32 CST 1995 From: wstites@fsmail.uwsp.edu Subject: RTFM? In reply to this sort of message... >WOULD SOMEONE PLEASE SEND DIRECTIONS ON HOW TO GET OFF THE AGMODELS LIST. I >CAN' T FIND THE CORRECT COMMANDS >PLEASE SEND COMMAND TO GET OFF THE LIST. >THANKS I had something really snide to say, but they are saying please and thank you, so... It would be a lot easier for someone to help you out if you included a return address. Will Stites Central Wisconsin Groundwater Center 109 Nelson Hall, UW-Stevens Point Stevens Point, Wisconsin 54481 715-346-4501 wstites@fsmail.uwsp.edu
Date: Tue, 5 Dec 1995 16:19:28 -0500 (EST) From: Nelson Buck <nbuck@mail.bcpl.lib.md.us> Subject: Re: Vacancies 2On Mon, 4 Dec 1995, P. Grace wrote: > Hi folks > I recently posted 2 modelling positions on the server. Can someone give me a leg > into any other listservers for another 5 positions available here in Australia > ...plant pathologist, weed ecologist, reveg. ecologist, population biologist and resource > economist, or if I forwarded them on to you could you post them as you wish > you wish. Sorry to drop in with this non modelling info. but they are good > opportunities for all scientists. > You might want to post your announcements to a list of environment- related jobs <envjobs-l@cedar.univie.ac.at>. I believe you post announcements by sending them to <envjobs-l@cedar.univie.ac.at> with the words "JOB AVAILABLE" in the subject line. You can subscribe by sending e-mail to <listproc@cedar.univie.ac.at> with SUBSCRIBE ENVJOBS-L firstname lastname in the body of the message. Nelson Buck
End of Digest
>From root@crcnis1.unl.edu Wed Dec  6 22:36 EST 1995
Date: Wed, 6 Dec 1995 16:12:13 -0600
Message-Id: <199512062212.AA09982@crcnis1.unl.edu>
Subject: AGMODELS-L digest 406

Contents:
Crop Simulation Workshop (Jon Hanson <jon@gpsr.colostate.edu>)
     Pesticide Database (DON WAUCHOPE <DON@tifton.cpes.peachnet.edu>)
RE: Pesticide Database (Jon Hanson <jon@gpsr.colostate.edu>)



Date: Tue, 5 Dec 1995 16:22:01 -0700 From: Jon Hanson <jon@gpsr.colostate.edu> Subject: Crop Simulation Workshop Announcement: 26th Crop Simulation Workshop Biological Systems Simulation Group April 9 , 10, 11, 1996 Fort Collins, CO TO: Potential Participants From: Great Plains Systems Research Unit We will be hosting the annual crop simulation workshop in Fort Collins, CO this spring. The meeting will be similar to those of the past and will consist of presented papers, posters, and software demonstrations. In addition, we would like to organize a special symposium on modeling the effects of management practices on root zone processes and crop production. Proposed topics of the symposium include: 1. Effects of tillage and residue cover on soil water storage, soil temperature, mineralization, and plant growth. 2. Effects of different crop rooting systems and rotations on root zone properties and processes. If you are interested, or know of someone who would be interested, in participating in this symposium, please contact Jon Hanson (address/telephone number following). An announcement and call-for-papers will be posted later this week. Please consider attending this important and informative workshop. __________________________________________________ __________________________________________________ Jon D. Hanson USDA, ARS Great Plains Systems Research P.O. Box E, 301 S. Howes Fort Collins, CO E-mail: jon@gpsr.colostate.edu Tele: (970)490-8323 Fax: (970)490-8310
Date: Wed, 06 Dec 95 10:17:02 EST From: DON WAUCHOPE <DON@tifton.cpes.peachnet.edu> Subject: Pesticide Database Dear Agmodelers: Several weeks ago I provided the address of the "ARS Pesticide Properties Database" web site, a new e-publication of pesticide properties of environ- mental interest. I have had several responses on its utility, need for fields, etc. I am on the Steering Committee charged with providing input to the folks at the ARS Sytems Laboratory on the database--ways it can be improved, new data and corrections, operting procedures, etc. We are meeting in Beltsville next Tuesday and any inputs from you, the user community, would be welcome. This e-publishing thing is unknown territory for us--we will listen to any input. Send responses by reply to me or direct to the web site: http//:www.arsusda.gov/ppdb.html thank you. Don Wauchope
Date: Wed, 6 Dec 1995 10:26:45 -0700 From: Jon Hanson <jon@gpsr.colostate.edu> Subject: RE: Pesticide Database Just a note to correct the address Don provided to the pesticide web site. The address should begin with http://www Otherwise you will not be able to connect. Jon Hanson _____________________________________________________ I am on the Steering Committee charged with providing input to the folks at the ARS Sytems Laboratory on the database--ways it can be improved, new data and corrections, operting procedures, etc. We are meeting in Beltsville next Tuesday and any inputs from you, the user community, would be welcome. This e-publishing thing is unknown territory for us--we will listen to any input. Send responses by reply to me or direct to the web site: http//:www.arsusda.gov/ppdb.html thank you. Don Wauchope
End of Digest
>From ab4el@ab4el.com Fri Dec  8 00:01 EDT 1995
Date: Fri,  8 Dec 1995 00:01:00 -0500
Message-Id: <19951208000100.ab4el@ab4el.com>
Subject: AGMODELS-L digest 407 was NOT received

AGMODELS-L digest 407 was NOT received



>From ab4el@ab4el.com Fri Dec 15 00:01 EDT 1995
Date: Fri, 15 Dec 1995 00:01:00 -0500
Message-Id: <19951215000100.ab4el@ab4el.com>
Subject: AGMODELS-L digest 408 was NOT received

AGMODELS-L digest 408 was NOT received



>From root@crcnis1.unl.edu Wed Dec 20 20:17 EST 1995
Date: Tue, 19 Dec 1995 21:03:02 -0600
Message-Id: <199512200303.AA25240@crcnis1.unl.edu>
Subject: AGMODELS-L digest 409

Contents:
risk modeling (Maribeth Milner <milner@townsqr.com>)



Date: Tue, 19 Dec 1995 20:55:29 -0600 From: Maribeth Milner <milner@townsqr.com> Subject: risk modeling (This message is being cross-posted to the hydrology and GIS newsgroups.) I am developing a model to quantify the risk of polluting surface and groundwater by various point and non-point sources. The model will incorporate the following risk components: -intrinsic risk -concentration dependent risk -location dependent risk (GIS) Specifically, proximity to sink hole basins, losing streams, gaining streams or wells and relationship to sloped surfaces. My preliminary model will be presented to a steering committee representing local government, timber, forest (USFS is a major land owner), range, mining, (minor amounts of) row cropping, sport fishing and canoeing/rafting interests. Due to the conflicting interests of the committee, I'd like to have as much research and general precedent behind the risk model as possible. I am interested in: -research that substantiates/evaluates best management practices. An example would be the evaluation of riparian buffer strip requirements with respect to width and vegetation type. -existing models that quantify water quality risks - especially those developed by people of varying interests. The following list of hazards listed in the proposal is offered to familiarize you with the potential problems in the watershed: Agriculture -Concentrated animal feeding operations -Other feed lots Erosion/construction -Highway, road and bridge construction and operation -Land clearing and developement -Highly erodible cropland Municiple stormwater -Storm sewer outfalls -Combined sewer outfalls -Surface drainage Mining -Surface mining -Dredge mining -Mill tailings -Mine water -Gravel, limestone and other industrial mineral mining Land disposal -Sludge -Landfills -Land application of wastewater -Sawdust piles Silviculture -Saw mills -Harvesting areas Chemical storage -Ag chemical facilities -Salt piles -Storage tanks Wastewater -Permitted wastewater facilities -Septic tanks and other individual systems Regards, Maribeth Milner milner@townsqr.com
End of Digest
>From root@crcnis1.unl.edu Thu Dec 21 05:08 EST 1995
Date: Wed, 20 Dec 1995 21:03:13 -0600
Message-Id: <199512210303.AA12029@crcnis1.unl.edu>
Subject: AGMODELS-L digest 410

Contents:
Cotton Meetings (Stephen Rawlins <srawlins@ncw.net>)
Re: Cotton Meetings (jp@unlinfo.unl.edu (jerome pier))



Date: Tue, 19 Dec 1995 21:30:25 -0800 From: Stephen Rawlins <srawlins@ncw.net> Subject: Cotton Meetings I understand the cotton meetins will be held the second week of January, in New Orleans, I think. Usually they have one or more sessions on cotton simulators. I'd like to attend, but don't have meeting info. If someone can share meeting registration and agenda information with me, I'd be grateful. Steve Rawlins 2638 Eastwood Avenue Richland, WA 99352 Phone 509-627-4943 FAX 509-627-1841 Email: srawlins@ncw.net
Date: Wed, 20 Dec 1995 12:26:24 -0600 (CST) From: jp@unlinfo.unl.edu (jerome pier) Subject: Re: Cotton Meetings Dear Steve and Agmodelers, The Beltwide Cotton Conference will be held at the Opryland Hotel in Nashville TN from Jan 8 to 12 (Mon-Fri). Here's the tentative schedule: Mon 1-5:30 pm: Registration Tue 8-4: Production Conference Wed 8-5: Production workshops which include: Cotton Physiology, New Developments from Industry Insect Mgmt., Precision Farming, Harvest Aid, Alternative Cotton Prod. Weed Mgmt., Cotton Price Models, Regional Cotton Prod. Emerging Computer Technology, Biotechnology, Plant Monitoring Thu 8-5: Cotton Conferences including: Disease Council, Organic Dusts, Economics and Marketing, Engineering-Systems, Ginning, Improvement, Insect Research and Control, Physiology, Quality Measurement, Soil Mgmt. and Plant Nutrition, Textile Processing, Weed Science Research. Fri 8-5: Cotton Conferences Continued. Call (615)883-2211 for Hotel Reservations. For more info, mail to: Debbie Richter National Cotton Council P.O. Box 12285 Memphis TN 38182-0285 > I understand the cotton meetins will be held the second week of January, in > New Orleans, I think. Usually they have one or more sessions on cotton > simulators. I'd like to attend, but don't have meeting info. If someone > can share meeting registration and agenda information with me, I'd be grateful. > > Steve Rawlins > 2638 Eastwood Avenue > Richland, WA 99352 > Phone 509-627-4943 > FAX 509-627-1841 > Email: srawlins@ncw.net > > -- Sincerely, Jerome Pier Soil Scientist/Agronomist Netafim Irrigation, Inc. jpier@qnis.net
End of Digest
>From root@crcnis1.unl.edu Fri Dec 22 03:19 EST 1995
Date: Thu, 21 Dec 1995 21:05:48 -0600
Message-Id: <199512220305.AA29903@crcnis1.unl.edu>
Subject: AGMODELS-L digest 411

Contents:
     Aquaculture Sim. Model (David Zucker <DZUC6633@URIACC.URI.EDU>)



Date: Thu, 21 Dec 95 10:18:18 EST From: David Zucker <DZUC6633@URIACC.URI.EDU> Subject: Aquaculture Sim. Model Dear List: At the request of JP I am filling my obligation as a new member and introducing myself and my topic. My name is David Zucker and I am currently working on my Ph.D. in Environmental and NAtural Resource Economics at the University of Rhode Island. My thesis topic, though not well defined as of yet will in some way deal with the issues of the economics of land based summer flounder aquaculture. As part of research grant I am also identifying production issues of a summer flounder facility which gives me the reason for using this list. I am currently in the process of builing a simulation model using Crystal Ball in Excel. The model, as I have defined it, will use inputs from the facility manager and provide him/her with risk and uncertainty analysis for three to four different types of system constructs. Outputs will be in the inthe form of distributions and will inlude many figures the manager would need to assist in gaining funds from a financing institution. Any comments would be appreciated. David Zucker, MS dzuc6633@uriacc.uri.edu
End of Digest
AGROMOMY Homepage @ SunSITE


Prepared by Steve Modena, AB4EL
Suggestions and comments to: modena@SunSITE.unc.edu