Publications Plus –University of Illinois Agricultural
and Horticultural Publications
Call 1-800-345-6087 or order on the web www.PublicationsPlus.uiuc.edu.
It’s a one-stop shop for a current catalog of research-based
information (Mastercard and VISA accepted)
WeedSOFT Yield Loss and Tank Mix Calculators
Aaron Hager and Dawn Nordby, University of Illinois Extension,
Department of Crop Sciences
Two new weed management tools are available for use on the Web.
The first is the WeedSOFT yield loss calculator, designed to estimate
the yield loss from emerged weeds in corn or soybeans. This could
represent weeds being controlled either in a total post program
or in a respray or second-flush situation. Just select your state,
enter a few pieces of information about the crop and weeds, and
then click the calculate yield loss button. In these postemergence
scenarios, the calculator will estimate the yield loss from early-season
weed competition (yield loss up to that stage of growth), the
loss if weeds are not controlled until the next growth stage,
and total loss for the season if these weeds were not controlled.
In addition to the estimated yield loss in bushels per acre, the
dollar loss per acre is presented.
The second tool is the WeedSOFT Tank Mix Calculator. This tool
has two great features. First, it calculates herbicide and adjuvant
quantities that are needed to mix loads based on your spray volume
(GPA), tank size, and the herbicide rates you enter. Second, it
creates a printable load ticket that can double as a record-keeping
form. It also has U.S. EPA registration numbers for a large number
of herbicides, that are automatically loaded when you select your
Both tools work rapidly over the Internet, even with dial-up
service. Please check both of them out at weedsoft.unl.edu/weedsoftapps.htm.
These tools are just two parts of the complete WeedSOFT software
program, which provides a more complete analysis of herbicide
management options and economic returns in corn and soybeans.
The WeedSOFT software is available for $50 to purchase and can
be updated yearly for $40. WeedSOFT is a decision support system
(DSS) designed to assist growers, consultants, and Extension agents
in making both proactive and reactive weed management decisions.
WeedSOFT provides you with the treatment information you need
according to your specific field conditions while factoring in
economic and environmental principles. If you are interested in
learning more about the full software program or online ordering,
visit the WeedSOFT home page at weedsoft.unl.edu.
Identifying Natural Enemies in Field Crops
This timely pocket guide has color pictures of common beneficial
insects – both predators and parasitoids – and spiders.
It provides information on identification, lifecycle and diet.
The pocket guide has glossy pages and a spiral binding, so you
can use it in the field. Although it is geared for field crops,
it is appropriate for use in other crops and by homeowners. Now
available from the MSU Extension Bulletin office: MSU Bulletin
inventory number E2949. The cost is $10 per copy, $7 per copy
for bulk orders (10 or more copies). To order contact: MSU Bulletin
office,117 Central Services, Michigan State University, East Lansing,
MI 48824-1001, Phone: 517-353-6740, www.emdc.msue.msu.edu.
Energy Estimator for Irrigation
U.S. Department of Agriculture (USDA) has just released a Web-based
calculator tool designed to help producers manage their irrigation
water resources more efficiently. It evaluates opportunities to
save on energy costs and improve efficiency of irrigation management.
It allows producers to estimate the energy cost of pumping water
for irrigation on their farm. Producers enter information about
their irrigation system and crops, then receive an analysis of
current water use, the reduced water use associated with various
treatment options, as well as the energy costs and savings of
these treatment options.