Archive SOILS-L: file log9501, part 1/1, size 68813 bytes:
------------------------------ Cut here ------------------------------
In your pre holiday greeting you wrote:
> SET SOILS-L MAIL POSTPONE
> and this will hold all your mail while you are away. You then
> send the same message without the POSTPONE to get all the mail
> you missed.
I did this before I left. I sent the following on my return:
> set soils-l mail
and got:
> >SET SOILS-L MAIL
> Missing SET MAIL value
What is the correct value to again get the mail I missed?
Thanks,
John
Hi,
For the past four months I have been attempting to get a reference on
extracting and analyzing for CrVI in soils. I would greatly appreciate
any help offered in getting hold of the two methods listed in this reference:
U.S. Environmental Protection Agency. 1982. Test methods for evaluating
solid waste. 2nd ed. SW-846 (methods 3060 and 7196). USEPA, Washington, DC.
My snail mail address is:
Matt Redding
Postgraduate
Environmental Sciences
Griffith University
Nathan Campus, Brisbane
Queensland, 4111
Australia.
Email me on m.redding@ens.gu.edu.au. This reference has become rather
important, and I would appreciate any help I can get, since the Libraries
seem disinclined to.
Thanks,
Matt Redding
I would like to thank everyone who responsed to my enquiry on Soil
teaching softwares. The followings are my original question and the
responses that I have so far.
Methi.
>------------- The Original Question ------------
>>Dear soils-l,
>>We are considering to use tutorials and teaching softwares to supplement
>>the laboratory works in the Introduction to Soil Science course in our
>>University. Would anyone who have experiences or may know about the
>>availability of such softwares please guide me to the right direction and
>>persons. Thanks a lot.
>>
>>Methi.
>>
------------ The Responses --------------------
From: Lex Cogle <alexc@salt.ind.dpi.qld.gov.au>
>One set of software that would be useful is PERFED. This is a user friendly
>front end to a cropping systems simulation model called PERFECT. The model
>simulates hydrology, erosion, and crops and has been used as a teaching tool
>in Queensland, Australia. It is also used as a research and land management
>tool. The contact person is Mark Littleboy, RAP, Queensland Department of
>Primary Industries, Indooroopilly, 4068, QLD, Australia. Mark's email
>contact is " nscp@qdpii.ind.dpi.qld.gov.au ".
>
>Recently, an "Indian modified" version was developed from joint work between
>us and ICRISAT in Hyderabad, India. The contact person in India is Dr K.P.C.
>Rao, SACD, ICRISAT, PO Patancheru 502324 AP, INDIA. KPC's email is
>K.P.Rao@cgnet.com.
>
>Good luck
>Lex Cogle
>
>Natural Resource Management
>Dept. of Primary Industries
>Peters St.
>Mareeba 4880 Qld AUSTRALIA
>Phone : 070-921555
>Fax : 070-523593
>email : alexc@salt.ind.dpi.qld.gov.au
>
------------------
>
From: Simon Cook <simonc@per.dms.csiro.au>
I have a pair of books by Catena called:
The Soil as a Reactor
Modelling for processes in the soil
....which contain simple programs and software to illustrate soil processes.
They are both written in BASIC by Jorge Richter
The nearest contact for Catena is Catena Verlag: (Japan)
Fax: 03 818 0864
Simon Cook
CSIRO Division of Soils
Private Bag
PO Wembley
Western Australia 6014
Tel: (Australia) 9 387 0138
Fax: (Australia) 9 387 8991
___________________________
From: MEC@gnv.ifas.ufl.edu
I received your e-mail from my colleagues at the Natural
Resources Conservation Service. They know of my work in multimedia
to teach soils. I am developing a CD-ROM SOILdisk to use in teaching.
Please provide me with more information on what you would like to learn.
Mary E. Collins
============================================
I am looking for computer models that could predict ammonia losses
from urine added to the surface of beef cattle feedlots. The model must
have the ability to predict urea hydrolysis and subsequent ammonia
volatilization on a maximum of a 1 to 2 hour time step. I would appreciate
leads on models that may do the job, and names of people who have had
experience using such models.
Thanks.
John A. Lory <jlory@unl.edu>
USDA-ARS, 119 Keim Hall-East Campus
University of Nebraska-Lincoln
Lincoln, NE 68583-0915
(402)472-1516 (w), (402)466-8735 (h)
Could someone on this list please e-mail, or post, a response if there is
there a comprehensive list of agricultural/food oriented listservs,
newsgroups, WWWsites, etc. somewhere on Internet? Thanks.
Warren E. Clark, President
Clark Consulting International, Inc.
14N921 Lac Du Beatrice
West Dundee, IL 60118-3115
Tel: 708-836-5100/Fax: 708-836-5140/Internet: AGPR@aol.com
**Providing worldwide agricultural/food, editorial, public relations, and
marketing services consulting**
P.S. If you know any ag or food writers on Internet who like research, writing
and editing, please let them know we'd like to talk with them about becoming
part of our growing worldwide network of on-line freelance
writers... Thanks.
>Could someone on this list please e-mail, or post, a response if there is
>there a comprehensive list of agricultural/food oriented listservs,
>newsgroups, WWWsites, etc. somewhere on Internet? Thanks.
Places to find the requested information.
1. <http://www.csos.orst.edu/~doylej/> look for useful links in the
Ecology section;
2. Federal Government Agency Directory:
http://www.lib.lsu.edu/gov/fedgov.html; or
3. Biotechnology Infomation Center of the National Agricultural Library:
http://www.inform.umd.edu/EdRes/Topic/AgrEnv/Biotech,
gopher gopher.nalusda.gov, or
ftp to inform.umd.edu /eductional resources/agricultural
resources/biotechnology information
center.
Best wishes,
Jack Doyle
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Jack D. Doyle, Ph. D. Voice: (503) 754-4877
Project Scientist/ Microbial Ecologist FAX: (503) 754-4711
ManTech Enviromental Technology, Inc. Email: jackd@mail.cor.epa.gov
200 SW 35th St.
Corvallis, OR 97333
For you information.
The National Academy of Science is divided into 6 divisions. Division
6 is titled "Applied Biology and Agricultural Science." There are two
Sections of this Division. Section 61 is in the area of Animal Science
and Human Nutrition. Until a few days ago Section 62 was known as
Agricultural Sciences. The new name of Section 62 of the National
Academy of Science is "Plant, Soil and Microbial Science."
This is the first time that "soil" has been recognized by the Academy
by listing in a name of a Division or Section.
Charles B. Roth
Purdue University
Department of Agronomy
1150 Lilly Hall
West Lafayette, IN 47907-1150
phone: (317)494-8051
fax: (317) 496-1368
e-mail: roth@dept.agry.purdue.edu
Dear list members,
Shortly after the start of this list I already made an introduction.
However, up to date I haven't mailed any question or remark, so I'd like to
give a short overview of my work in the hope to get any suggestion and an
answer to the question that I am about to pose.
I work at the faculty of Geography of the Utrecht University on a PhD
research on soil degradtion in agricultural colonization areas in South
Brazil. My intention is to assess the effects of soil degradation brought
about by differing types of land use on the soil water balance.
Therefore I'll be monitoring soil water fluxes during this year in order to
trace differences in for instance infiltration and water retention capacity
due to different types of land management and degradation rates.
Does anyone have suggestions on appropriate field methods to carry out
these measurements? I'm thinking of using the technique of time domain
reflectrometry (TDR) to monitor soil moisture. Has anyone experience with
TDR measurements in subtropical deeply weathered soils (oxisols, ultisolos)
or with the TRIME FM-2 by IMKO?
regards,
Mark Snethlage
Utrecht University
m.snethlage@frw.ruu.nl
Can anyone recommend a good refrence book on soil invert.'s? Many of the
standard invert. zoology texts have to much information on aquatic
organisms. I am looking for a text with good descriptions (i.e.,
physical characteristics, habitat, typical food sources, etc.) of the taxa
down to perhaps the genus level.
All ideas welcome.
--
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+Drew Rak Internet: drewrak@acpub.duke.edu +
+Duke University, School of the Environment V 919/541-6315 +
+P.O. Box 90331, Durham, NC 27708-0331 USA F 919/541-7155 +
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Andrew,
In the past year or two several new texts were obtains by the ncsu
library. You might want to try searching the catalogue over here to see
what we've got. If you need more info i could try to track something
down for you..
noah
soil science
set soils-l mail
Position announcement for
Upland Rice Agronomist
Lao-IRRI Rice Research and Training Project
The International Rice Research Institute (IRRI), supported by the Consultative
Group on International Agricultural Research (CGIAR), is a non-profit,
autonomous organization engaged in research and training on rice-related
technology. The Upland Agronomist is a team member of the Lao-IRRI Rice
Research and Training Project funded by the Swiss Development Cooperation
(SDC).
Responsibilities
Under the supervision of the Lao-IRRI project team leader, the Upland Rice
Agronomist leads efforts to develop more productive yet sustainable upland
farming systems with emphasis on soil conservation, soil fertility improvement
and weed control; also collaborates with Lao scientists and technicians in the
design, implementation and analysis of on-station and on-farm experiments. Work
requires a balance of formal research and the development of practical,
farmer-appropriate solutions to major constraints and problems in the uplands.
Effective linkanges with extension and development programs in Laos, and the
IRRI Upland Rice Research Program, must be developed and maintained. Training
of Lao scientists and technicians is an important responsibility of the
position.
Qualifications
Candidates should have a Ph D in Agronomy or related science and at least 5
years of relevant research experience. Previous experience with upland farming
systems in Southeast Asia is desirable.
Benefits
The Upland Agronomist will be located at Luang Prabang in Northern Laos. Salary
and perquisites for this position are internationally competitive. IRRI
provides a gender-sensitive work environment and particularly welcomes women
applicants.
Send a comprehensive curriculum vitae and the names, addresses, and fax numbers
of three referees by 20 February 1994 to
Dr. Klaus Lampe
Director General
International Rice Research Institute
P.O. Box 933, Manila 1099, Philippines
Tel (63-2) 818-1926
Fax:(63-2) 818-2087
Telex: 40890 RICE PM
E-mail: IN%"Postmaster@IRRI.CGNET.COM"
Hello everybody,
does anyone know about a finite element/finite difference
program that can solve 2-D, time dependent initial
value problems? Is there a source in the Internet?
Any help welcome.
Best whishes to all of you!
thomas.rose@zfn.uni-bremen.de
Hi,
My name is Jeremy Carter. I am a fourth year soils undergraduate at the
University of British Columbia. I am currently using the internet to
search for information on soil and water conservation for a directed
studies course.
I would appreciate suggestions on where I can find further info on this
topic.
Thanks,
Jeremy Carter
carterjn@unixg.ubc.ca
3974 W16th Ave.
Vancouver B.C.
Canada
V6R 3C8
Dear Soils-L Readers:
I have been using the EPA-developed packages GeoEAS and GEOPACK
to do geostatistical analyses (semivariograms/kriging), but when I tried them
on some larger data sets (2,800-28,000 observations) I was frustrated by the
limited size of the data arrays that they can handle. My questions to you:
Does anyone know if GEOPACK has been "adopted" by the private sector and
modified to handle larger data arrays? If so, a commercial source?
What recommendations might you all have for commercially available
geostatistical software under DOS/Windows? E.g., can anyone comment on "GS+",
"KSTAT", or any other program that is capable of doing semivariogram analysis
and kriging?
FYI: I am interested in programs with transparent semivariogram analysis,
i.e., I am seeking capabilities beyond simply "blind" kriging of the type
that is possible in programs like, e.g., "SURFER".
Thanks for your help. I would appreciate email responses directly to me, and
if interest warrants, I'd gladly summarize to Soils-L.
Jeff
Jeffrey G. White, Ph.D.
Soil, Crop, and Atmospheric Sciences/Cornell University
USDA Plant, Soil, & Nutrition Laboratory
Tower Road
Ithaca, NY 14853-2901
Telephone: 607-255-2179
FAX: 607-255-2459
email: jgw4@cornell.edu
Hi Jeff,
I don't know a particular solution to your problem, but maybe you're
looking in the wrong place. As far as I know, most stat-software under
dos/win is limited to 32k samples or even less (exept win32 or win95
(96?) apps and the like). This is a system-inherent problem. If you could
switch to unix (linux,os/2) you may use up to 4 GB of data. I'm sure there is
public domain software for unix systems to perfom the required task.
Good luck
Uli
--
Uli Wortmann
Dept. of Geology
Tech. Univ. Munich
Fax (Germany) 89 3209 3168
Fon 3232
email: uli@homer.geol.chemie.tu-muenchen.de
t341301@sun1.lrz-muenchen.de
Cc:
Dear Soils-l Readers
I have recently come across the results of a soil erosion model called
SEDCAD+ version 3.1. It is being used to model surface soil erosion thru
a series of subwatersheds. Does anyone have any information about this
model - references, supplier/cost, applications? I'm interested in knowing
whether it models stream bed scour and deposition in addition to soil
erosion, and whether there are other models that do similar things.
I have recently subscibed to soils-l. I am a hydrogeologist working for
the Environmental Protection Agency in Seattle Washington.
I would appreciate any information on this or similar models!
Susan McCarthy
smccarth@r0dg10.r10.epa.gov
Enviromental Protection Agency
Region 10
1200 6th Ave. ES-098
Seattle, WA 98101
I have been lurking here for a while. I am a farmer in Lompoc CA
(Santa Barbara County). Yes, I am above the high tide (so far).
I have a couple of questions. Soil nutrition? Is this the right
place?
I do soil tests preplant. We have typically high levels of K
(potash). I look at the literature and we are above the 100
level. Typically, 300+. I had a soil scientist on call. He said
no K is needed. New soil scientist, and he said that I need 5% of
the exchangeable ions to be K. That meant an additions 800 lbs of
K as a preplant. One says 0 and the other says 800 lbs. Of
course, I will trial, but I am confuse.
I talked to yet another soil scientist, a extention scientist at
UC Davis. He says the 5% was a theory that is under some disrepute
now, and suggests going back to the old threshold numbers.
???
The advice from UC Davis sounds very good to me and they certainly
should know -- they've conducted a lot of research effort on potassium.
The idea of the percentage as a target is, as the UC Davis scientist
said, an idea from long ago and represents one of the debates in nutrient
management history. Critical levels appear, in most cases, to be a much
more cost-effective approach.
-----
Russell Yost Office: 808-956-7066
University of Hawaii at Manoa FAX: 808-956-6539
1910 East West Road rsyost@uhunix.uhcc.Hawaii.Edu
Honolulu, HI, 96822
It depends on how much you are above the high tide. We did research on the
effect of redox condition on the availability of soil K. The result indicate
that
It depends on how much you are above the high tide. We did research on the
effect of redox condition on the availability of soil K. The results indicated
that soil reduction increased K fixation. So if your fields are affected by
the flood (higher groundwater level), I would apply some extra K even though
the soil test showed a high level of K. Good luck!
This and the following message cover submission of papers to the
Annual Meetings of the ASA-CSSA-SSSA.
Tom Hodges Cropping Systems Modeler ___ ___
USDA-ARS / \_/ \
Rt. 2, Box 2953-A Telephone: 509-786-9207 | |
Prosser, WA 99350 Fax: 509-786-9370 \______/^\/
USA potato tuber
============= thodges@beta.tricity.wsu.edu ========================
...photosynthesis makes the world go around... Mr. Potato Head
First Call for Papers
American Society of Agronomy
Crop Science Society of America
Soil Science Society of America
Annual Meetings
Oct. 29-Nov. 3, 1995 St. Louis, Missouri
Application Deadline: April 8, 1995
Background Information
This year's meeting theme is "Gateway to the Future". Members of
the American Society of Agronomy are dedicated to the conservation and
wise use of natural resources to produce food, feed, and fiber crops
while maintaining or improving the environment. For over 86 years,
agronomists throughout the world have recognized the American Society
of Agronomy as their professional home. The Crop Science Society of
America is comprised of scientists interested in all aspects of crop
science including the improvement, culture, management, and utilization
of field crops. Members of the Soil Science Society of America focus
their interest upon soil physics, chemistry, microbiology, fertility,
pedology, conservation, forest soils, mineralogy, and wetlands.
These three Societies were established as independent, autonomous
organizations. Because of their common interests, however, they work
closely together and share the same headquarters office in Madison,
Wisconsin. Total membership is 12,500. Over 4,000 scientists from
throughout the world will attend the 1995 annual meetings in St. Louis.
To Present a Paper in St. Louis
Society regulations require at least one author to hold membership
in the American Society of Agronomy, Crop Science Society of America,
or Soil Science Society of America. The deadline for registration of
papers is April 8, 1995. Additional program regulations are published
in the Second Call for Papers. The Second Call for Papers will be
published in the Febuary 1995 issue of Agronomy News sent to all Society
members. For non-members to receive a copy of the Second Call for
Papers contact:
ASA, CSSA, SSSA Headquarters Office
Attn: Second Call for Papers
677 South Segoe Road
Madison, WI 53711-1086 USA
Phone: (608) 273-8080
FAX: (608) 273-8089
Individuals desiring to present a paper in the Computer Software
Scene or Division S-1 (Soil Physics) can obtain an EMail registration
form via EMail. Send your EMail request to:
Computer Software Scene potmod@beta.tricity.wsu.edu
Division S-1, Soil Physics rhorton@iastate.edu
These EMail addresses are valid only for individuals wanting to
present their paper in the Computer Software Scene or Division S-1.
All other requests must be made to the ASA, CSSA, SSSA Headquarters
Office at the address shown above.
=========================================================================
Numerous Symposia are organized for each ASA-CSSA-SSSA Annual Meeting.
Those planned by the Software Scene for 1995 are listed below.
Software Scene:
1. Global Networking and Databases. Oral, Poster, and Computer
demonstrations are invited on use of global computer networks
such as the Internet and use of agronomic databases
available over such networks in agricultural research and
applications. Contact Dr. Wendell Oak (303-282-2473) for
more detailed information. Joint with division A-5.
2. Demonstrations of Internet Resources. What agronomic
resources are available over the Internet? The World Wide Web,
Gopher, FTP, Telnet, Usenet Forums, EMail lists, etc. may be
demonstrated and potential uses/applications in agricultural
production and research. Oral and poster presentations may
also be suitable. Contact Dr. Tom Hodges (509-786-9207,
thodges@beta.tricity.wsu.edu) for more detailed information.
Joint with division A-1.
3. Development of User Interfaces for Agronomic Models and other
Software Applications. The user interface (appearance) of a
software application has a large effect on the user's ability
to use it easily and correctly. Oral, Poster, and Computer
demonstrations are invited on types of interfaces, principles of
design, interface development tools, and use of interfaces.
Contact Dr. Dennis Timlin (301-504-6255, dtimlin@ncsr.arsusda.gov)
for more detailed information. Joint with division A-1.
These are forms for submitting papers at the 1995 ASA-CSSA-SSSA
Annual Meetings for the Software Scene and Soil Physics Divisions.
Contact the ASA Headquarters for forms to be used for submitting
papers to other divisions. The previous message tells something
about the Society.
Tom Hodges
Tom Hodges Cropping Systems Modeler ___ ___
USDA-ARS / \_/ \
Rt. 2, Box 2953-A Telephone: 509-786-9207 | |
Prosser, WA 99350 Fax: 509-786-9370 \______/^\/
USA potato tuber
============= thodges@beta.tricity.wsu.edu ========================
...photosynthesis makes the world go around... Mr. Potato Head
1995 ASA, CSSA, SSSA Annual Meeting Title-Summary Form Oct. 29-Nov. 3, 1995
St. Louis, MO
DIRECTIONS: use only English when filling out form. Greek, Latin,
and mathematical symbols are strictly prohibited. This EMail form
is only for use with oral and poster papers submitted to the Soil
Physics division (S01) or Software Scene (C00). For software
demonstration papers, use the form below.
Use additional space as needed in sections below.
1. Method of submission:
___ EMAIL (S-1 and Software Scene only)
2. Division of interest: In which division would you like to present
your paper? See below for list of divisions.
First Choice ___ Second Choice ___
3. Title: Use English only. No Greek, Latin, or Mathematical symbols.
No more than 160 characters.
4. Author Name(s) : Put authors' Initials and Last name. List the
senior author first. Put "*" at end of speaker/presenter's last
name. At least one author of a volunteered paper must hold some
class of membership in ASA, CSSA, or SSSA.
5. Corresponding Author Data (membership number on back cover of
your Agronomy News).
Membership # _____ Phone___-___-____ FAX ___-___-____
First Name __________ M.I. _ Last name _________________________
Address ____________________________________________________________
City __________________ State/Prov __ Zip _____ Country _________
EMail ________________________________________
6. Method of Presentation ___ poster ___ oral
7. Paper Status ___ Volunteered ___ Invited - which division? ___
8. Summary
Return completed form by April 8, 1995 to:
ASA, CSSA, SSSA Headquarters, Attn: Keith Schlesinger; 677 South Segoe
Road; Madison WI 53711-1086 USA
Title-Summary Form Fax: (608) 273-8089 Title Summary forms only
Office phone: (608) 273-8080 ext 322
Questions may be referred to the Office phone or by EMail to:
Software Scene: Tom Hodges thodges@beta.tricity.wsu.edu
SSSA S-1: Robert Horton rhorton@iastate.edu
==========================================================================
Cut Here
==========================================================================
Software Scene Information Form: For Computer Demonstrations Only
1995 ASA, CSSA, SSSA Annual Meeting Title-Summary Form Oct. 29-Nov. 3, 1995
St. Louis, MO
DIRECTIONS: use only English when filling out form. Greek, Latin,
and mathematical symbols are strictly prohibited. Send only this
form by FAX by April 8, 1995 to: (608) 273-8089. This fax line is used
exclusively for transmission of Title-Summary Forms. You may also mail
your Title-Summary form by April 8, 1995 to ASA, CSSA, SSSA Headquarters
Office; Attn: Keith Schlesinger, 677 South Segoe Road; Madison WI
53711-1086 USA
Use additional space as needed in sections below.
1. Method of submission:
___ FAX ___ MAIL ___ E-Mail (S-1 or software scene only)
2. Symposium of interest: Is there a Symposium in which you would like
to present your software demonstration?
Name of Symposium: _______________________________________________
3. Title: Use English only. No Greek, Latin, or Mathematical symbols.
No more than 160 characters.
4. Author Name(s) : Put authors' Initials and Last name. List the
senior author first. Put "*" at end of speaker/presenter's last
name. At least one author of a volunteered paper must hold some
class of membership in ASA, CSSA, or SSSA.
5. Corresponding Author Data (membership number on back cover of
your Agronomy News).
Membership # _____ Phone___-___-____ FAX ___-___-____
First Name __________ M.I. _ Last name _________________________
Address ____________________________________________________________
City __________________ State/Prov __ Zip _____ Country _________
EMail ________________________________________
6. Method of Presentation ___ computer demonstration only
Use form above for oral or poster presentations.
7. Paper Status ___ Volunteered ___ Invited - which division? ___
8. Summary
9. Computer Hardware Requirements:
a. IBM-Compatible microcomputer 80486__
Macintosh 68040 PowerPC__
Older models and operating systems may not be available.
IBM-Compatibles will have MS-DOS and Windows installed
b. Minimum hard disk capacity ___ MByte
c. Minimum memory requirements ____ KByte
d. 3.5" floppy drive__ CDRom drive__
e. Math Coprocessor Required? Yes___ No___
f. Printer Required? Yes___ No___
Epson Compatible (80 col) __ (132 col) __ Laser Printer__
Postscript capable __
Other (excluding compatible with above) _______________________
h. Special monitor or graphics card required? Yes___ No___
If yes, please specify _______________________________________
i. Other equipment needs (sound cards, etc.)
10. Will you be able to provide any non-IBM-Compatible microcomputer
or other special equipment needs you listed? ____
Note: ASA will provide most equipment through a rental agreement.
SPECIAL EQUIPMENT WILL BE AT AUTHOR'S EXPENSE.
11. Intended users of this software: _________________________________
12. Please indicate ASA-CSSA-SSSA Division(s) with which this
demonstration could be cross listed: _____________________________
Return completed form by April 8, 1995 to:
ASA, CSSA, SSSA Headquarters, Attn: Keith Schlesinger; 677 South Segoe
Road; Madison WI 53711-1086 USA
Title-Summary Form Fax: (608) 273-8089 Title Summary forms only
Office phone: (608) 273-8080 ext 322
Questions may be referred to the Office phone or by EMail to:
Software Scene: Tom Hodges thodges@beta.tricity.wsu.edu
SSSA S-1: Robert Horton
==========================================================================
Cut Here
==========================================================================
ASA-CSSA-SSSA Divisions and Numbers:
A00 Student Activities
A01 Resident Education
A02 Military Land Use and Management
A03 Agroclimatology and Agronomic Modeling
A04 Extension Education
A05 Environmental Quality
A06 International Agronomy
A07 Agricultural Research Station Management
A08 Integrated Agricultural Systems
C00 Computer Software Scene
C01 Crop Breeding, Genetics, and Cytology
C02 Crop Physiology and Metabolism
C03 Crop Ecology, Production, and Management
C04 Seed Physiology, Production, Technology
C05 Turfgrass Science
C06 Crop Quality and Utilization
C07 Cell Biology and Molecular Genetics
C08 Plant Genetic Resources
S01 Soil Physics
S02 Soil Chemistry
S03 Soil Biology and Biochemistry
S04 Soil Fertility and Plant Nutrition
S05 Soil Pedology
S06 Soil and Water Management and Conservation
S07 Forest and Range Soils
S08 Nutrient Management and Soil and Plant Analysis
S09 Soil Mineralogy
S10 Wetland Soils
S11 Soils and Environmental Quality
==========================================================================
==========================================================================
Numerous Symposia are organized for each ASA-CSSA-SSSA Annual Meeting.
Those planned by the Software Scene are listed below.
Software Scene:
1. Global Networking and Databases. Oral, Poster, and Computer
demonstrations are invited on use of global computer networks
such as the Internet and use of agronomic databases
available over such networks in agricultural research and
applications. Contact Dr. Wendell Oak (303-282-2473) for
more detailed information. Joint with division A-5.
2. Demonstrations of Internet Resources. What agronomic
resources are available over the Internet? The World Wide Web,
Gopher, FTP, Telnet, Usenet Forums, EMail lists, etc. may be
demonstrated and potential uses/applications in agricultural
production and research. Oral and poster presentations may
also be suitable. Contact Dr. Tom Hodges (509-786-9207,
thodges@beta.tricity.wsu.edu) for more detailed information.
Joint with division A-1.
3. Development of User Interfaces for Agronomic Models and other
Software Applications. The user interface (appearance) of a
software application has a large effect on the user's ability
to use it easily and correctly. Oral, Poster, and Computer
demonstrations are invited on types of interfaces, principles of
design, interface development tools, and use of interfaces.
Contact Dr. Dennis Timlin (301-504-6255, dtimlin@ncsr.arsusda.gov)
for more detailed information. Joint with division A-1.
I will appreciate if someone could give me the "listserv" address of
this list. I would like to "unsubscribe" for some time.
Thanks,
Arman
The way you unsubscribe is:
UNSUBSCRIBE LISTSERV@UNL.EDU
or:
SIGNOFF LISTSERV@UNL.EDU
I hope that this helps you and is what you were looking for.
Carla Healer
CHEALE51@MAINE.MAINE.EDU
? In order for soils-l subscribers to get to know each other, I would
? request that you use your first post to the list to introduce yourself
? as far as your name, affiliation, area(s) of interest and at least
? one 'burning' question that you think would be a good discussion topic.
Craig Thompson
Washington State Department of Ecology
Toxics Cleanup Program
ctho461@ecy.wa.gov
I have 16 years industrial experience. Five years ago I left private
industry and went to work for the Washington State Department of Ecology. I
am a project manager for the cleanup of hazardous waste sites; specializing
(sorta) in chemical fate and transport as well as risk assessment. I am a
chemist.
Sorry, don't have a "burning" question (at least not one that may be
directly applicable to the list).
I have found that using literature values to predict leaching rates is
pretty much a waste of time compared to permeability/leaching tests. Agree?
Thanks,
Craig
___________________
"Fast, Cheap, Good: Choose any two." Rule for a lot of things.
>It depends on how much you are above the high tide. We did research on the
>effect of redox condition on the availability of soil K. The results indicated
>that soil reduction increased K fixation. So if your fields are affected by
>the flood (higher groundwater level), I would apply some extra K even though
>the soil test showed a high level of K. Good luck!
>
High tide is a little joke, but it may not be too funny. I am in
the flood plain. The river came within inches of flooding me, but
life goes on. I am at least 24 feet above sea level. There are
several fields with peroid high water table. I have extensive
tile drainage. The Ec can be high, the Ec of the water is high.
1.8, 2.4, some 4.0. High in calcium sulphate. Leeching is
required at times. Drip is used on the sandier ground. I am
getting off track, sorry.
>The advice from UC Davis sounds very good to me and they certainly
>should know -- they've conducted a lot of research effort on potassium.
>The idea of the percentage as a target is, as the UC Davis scientist
>said, an idea from long ago and represents one of the debates in nutrient
>management history. Critical levels appear, in most cases, to be a much
>more cost-effective approach.
>
The 5% solution was (apparently) some research work out of Iowa by
someone named Wallker(?). The fertilizer salesman loved the
concept <g>. When I mentioned the source, he was a little
chagrinned, but still asked for the order.
>I have been lurking here for a while. I am a farmer in Lompoc CA
>(Santa Barbara County). Yes, I am above the high tide (so far).
....
>
>I do soil tests preplant. We have typically high levels of K
>(potash). I look at the literature and we are above the 100
>level. Typically, 300+. I had a soil scientist on call. He said
>no K is needed. New soil scientist, and he said that I need 5% of
>the exchangeable ions to be K. That meant an additions 800 lbs of
>K as a preplant. One says 0 and the other says 800 lbs. Of
>course, I will trial, but I am confuse.
>
>I talked to yet another soil scientist, a extention scientist at
>UC Davis. He says the 5% was a theory that is under some disrepute
>now, and suggests going back to the old threshold numbers.
>
Hi Steve
I thought you got a very poor response to what was a very interesting post
on K. It heightened my suspicion that the Internet is not yet mature enough
to become involved in matters of any depth. Perhaps this will change with
time, as more scientists become acquainted with the power of this
communication medium.
Back to your problem. Soil testing has a long history of promoting the
"critical level" approach that is so simple in itself as to be suspect as a
working principle. It is, of course based on the premise that nutrients
function in isolation, when we know this is not the case in reality. There
are already several reports of anomalous responses to K fertilizer at "high"
soil tests; but of course the critical level idea allows for this by its use
of "probabilities of responses" within the different categories of test
values. The worry is that as we approach 2000AD most of us seem content to
chug along with these archaic concepts and methods instead of contemplating
alternative, newer, sounder systems.
The Rutgers method (Firman Bear) using the basic cation saturation approach
was an early attempt to introduce the idea of nutrient ratios into soil test
interpretations, but the idea of one fixed ratio range, for all soils and
all crops, is probably the major flaw in the method and has limited its
widespread adoption. We, in New Zealand, have the added problem of variable
charge (hence variable measured CEC) to contend with, especially on volcanic
soils and soils of markedly different organic matter contents.
More recently Malcolm Sumner's DRIS approach has attempted to take nutrient
ratios into account, and quite successfully it seems. Such new methods mount
a challenge to the single nutrient approach and appear to offer a better
fundamental rationale for interpretations of soil and plant testing methods.
It takes time, however, for new ideas to bed down in Soil Science, as in
other fields, especially when the textbooks are full of the critical level
idea, and students are probably still being taught the "tried and true"
earlier concepts. And we have few proven alternatives available at this
time, so that further limits our options.
It is, of course, foolhardy to attempt to devise fertilizer recommendations
solely on the basis of any soil test or interpretation method. There are so
many other factors that need to be taken into consideration, and these can
really only be sorted out in the paddock. No-one can make proper
recommendations at a distance.
The dilemna that you have discovered stems from the fact that you are
dealing with the "poles" of soil test interpretation (if not different soil
test methods as well). It would not be possible, given the amount of
information that you have provided to say which method is giving the best
advice. It IS possible to get a response to K with some crops even at HIGH
SOIL TEST values, and this has been reported on several occasions. So you
should not be put off by the recommendation to use K when the soil test
appears already adequate.
On the broader aspect of which is the best method; they both have their
strong and weak points. What is clearly required is some system that takes
into account the fact that plants need a certain AMOUNT of nutrients (the
crtical level approach) YET nutrients are known to interact with one another
(Basic cation saturation idea)ie a hybrid of the two extremes. Why these two
concepts cannot be combined into one comprehensive system is not so easy to
determine. But in my opinion they should be if we are to make any further
progress in this field.
This general area is probably one that could be further explored by
subscribers to this list. Perhaps my comments might serve to spark such a
discussion.
Regards
Max Turner
Dept of Soil Science
Massey University
New Zealand
PS One thing I find difficult to understand from your figures, is that if
the soil test is high on the normal scale, and yet you need to add
800lbs/acre of K (or K2O?) to get to 5% saturation of CEC there would seem
to be a major discrepancy in the tests for either CEC or exchangeable K
between the two labs (?); which is in itself another problem
/The thing I look for in soil samples is humus build up. Thats the
numbers that make me happy or sad. How much life is in the soil? HOw many
worms ,microorganizems,other living little helpers are there in soil.Is
there a test to test for soil life?
Sal Schettino,Organic Farmer,don't panic eat organic,sals@rain.org
or check out my homepage: http://www.rain.org/~sals/my.html
The important thing for a producer is to find soil test calibration for soils a
nd crops near the location or with similiar soils and climate. Field trials on
various soil test levels with various rates (not all on the same field) would
show if a response is probable. There is no one solution, reponse is always po
ssible. Unless you have your own data you have to go with the probabilities. Y
ou can play around and put some strips out this year to see. For Nebraska the
soil test levels would indicate low probability of response, but we have K in o
ur subsoil.
unsubscribe soils-l
I am a new subscriber to soils-l. my name is gerard voos. i am a postdoc at the savannah river
ecology lab. (SREL). My specialty is the bioremediation of contaminated soils and water. current
projects include the evaluation of water soluble vs. oleophilic fertilizers in the biodegradation of
petroleum contaminated soil, and the use of molecular marker compounds as an index of biodegradation
and microbial activity. burning questions include better ways of measuring microbial biomass, i.e.,
less time consuming and more precise.
Introduction to Soil-L discussion group: My name is Henry Sauer. I
am currently employed as a Soil Specialist for the State of Utah. I
am primarily involved with coal mine permitting. I also am a
technical assistant for the UT/DEQ in matters pertaining to mine
waste characterization, disposal and reclamation. I'm investigating
"AMD" from a 20 million ton coal refuse pile in "Arid Utah" and the
fate and mobility of boron and selenium in two other refuse piles.
Two burning question:
> What depositional environments are require for jarosite formation?
> Attibutes and inadequacies of predicting mine drainage quality
employing Humidity Cells.
Dear friends,
My name is Natasha Vidic, and have graduated from
University of Colorado Geology Dep in the field of
Soil Science and Quaternary Geology. I am an assistant
professor at the Agronomy Dep. of Ljubljana University
in Slovenia. I teach Intro Geology and Soil Science
to agronomy, forestry and animal husbandry students.
My research is mostly limited to the use of soils
in Quaterrnary Geology (chronosequences, rates of
soil development and soil-age relationships).
I have a lot of good textbooks for Physical Geology,
but I need a good textbook for Soil Science. Could
I get some suggestions from you? I would also like
to get a couple of lab manuals for SS.
My colleagues do a lot of soil pollution work.
They would like to know how to get EPA bulletins
with standard procedures. Is there a central library
that could send a catalog of publications? At the
moment they are interested in a standard procedure
for the determination of CEC of organic matter
(composts and similar).
Thank you very much for your suggestions!
Natasha Vidic
University of Ljubljana
Agronomy Dep.
Center for Soil Science
Jamnikarjeva 101
61000 Ljubljana
Slovenia
tel.: 38 61 123 1161
fax.: 38 61 123 1088
E-mail: natasa.vidic@uni-lj.si
Henry,
In response to your question:
> What depositional environments are require for jarosite formation?
Jarosite is an iron sulfate mineral formed by the oxidation of
sulfide-bearing materials (particularly pyrite). This is a generalized
description of the depositional environments:
First, the iron sulfide minerals are formed in a reduced environment and
require the presence of sulfates, iron minerals, sulfate-reducing bacteria,
an organic source of energy, and anaerobic environment. Such an environment
could be found in tidal marsh soils. Dredge materials from the Chesapeake
Bay also contain reduce iron sulfides (as a present day example).
For jarosite to form, the reduced materials have to be exposed to an
oxidizing environment. This can occur when tidal marshes are drained, dredge
material is placed on the surface, or reduced overburden and coal materials
that formed in such an environment are brought to the surface.
When the sulfide-bearing materials are oxidized, sulfuric acid is produced
and the pH drops drastically (to less than 3.5). If the Eh is high enough,
jarosite can precipitate. It forms a "straw"- colored coating. I've seen
this in "ripened" dredge materials and in acid minesoils.
Dr. Del Fanning of the University of Maryland has looked extensively at
jarosite in soils. Two sources of information that may be of use to you are:
Kittrick, Fanning, and Hossner (Editors). 1982. Acid Sulfate Weathering.
Soil Sci. Soc. Am. Special Publication No. 10.
Fanning and Fanning. 1989. Soil Morphology, Genesis, and Classification.
John Wiley and Sons.
As for your second question:
> Attibutes and inadequacies of predicting mine drainage quality employing
Humidity Cells.
I remember some research being done on this when I was working on mine
reclamation and acid mine drainage at West Virginia University. This was a
few years ago and my memory cells are rusty. You may want to contact Dr.
Jeff Skousen, Reclamation Specialist, Div. of Plant and Soil Sciences, WVU,
P.O. Box 6108, 1106 Ag. Sciences, Morgantown, WV 26506-6108. Phone (304)
293-6256. A lot of research work on overburden analysis has been done in
conjunction with WV's Acid Mine Drainage Task Force.
Hope you find this information useful. It's good to see a little more
activity on this list (it's been slow lately).
Nelson Thurman
nthurman@aol.com
Dear Colleagues:
I am a hydrogeologist working in the State of New Jersey (USA). My projects
include the remediation of contaminated ground water and soils. As you may
know, New Jersey is one of the most heavily industrialized states in the
country. Therefore, there are many impacted areas which are in dire need of
cleanup. Unfortunately, the environmental regulations have become lax and
the "cleanup zest" of the 1980s has lost its steam.
I am very interested in doing work overseas, especially in areas such as
Eastern Europe. Therefore, please contact me if you know of any contacts or
projects which may need the services of a hydrogeologist. Thanks!
Gil Oudijk
Hydrotechnology Consultants, Inc.
77 Bayberry Road
Princeton, New Jersey 08540
Tel. (609) 466-9628
FAX (609) 466-3634
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