Nutrient Management Resources
| Bedding Use AU/day (1000 lb animal) |
Chopped Straw |
Shavings |
Sand |
cubic ft / day |
| Freestall |
2.7 lb |
3.1 lb |
20-30 lb |
.3 cu ft sand or .2 cu ft straw |
| Tie Stall |
12 lb |
-- |
-- |
1.4 cu ft |
| Bedded Pack |
11.0 lb |
-- |
-- |
.8 cu ft chopped 1.9 long straw |
UW Nutrient Management Website
http://ipcm.wisc.edu/ProgramInfo/NPMprogram/tabid/62/Default.aspx
– Wisconsin’s NM Software
http://www.snapplus.net/index.php
Crops
Wisconsin Crop Monitor
http://ipcm.wisc.edu/Default.aspx?tabid=53
Weekly Pest Updates with Wisconsin Pest Bulletin
http://pestbulletin.wi.gov
Pesticide Applicator Training
http://ipcm.wisc.edu/Default.aspx?alias=ipcm.wisc.edu/pat
(Call 627-6236 to arrange or attend a test for private applicators)
Vegetable Disease & Forecasting UW Vegetable Pathology Website
Soils Information & Farm Maps
UW Soil & Forage Lab
http://uwlab.soils.wisc.edu/
Web Based Soil Survey
http://websoilsurvey.nrcs.usda.gov/app/
Langlade Map Viewer (has soils layer)
http://www.langladecogiws.com/
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Area Climate Information for Crops and Pest Management
Antigo Growing Degree Day Summary Derived from 1971-2000 Data
http://mrcc.sws.uiuc.edu/climate_midwest/historical/grow/wi/470239_gsum.html
Antigo Weather Station Summary
http://www.aos.wisc.edu/%7Esco/clim-history/stations/470239.html
General Climate Data for Langlade County, Wisconsin
http://www.wisconline.com/counties/langlade/climate.html
What are GDD and how are they calculated? Growing degree-days are a temperature-derived index representative of the amount of heat that the plants are exposed to, which in turn is directly related to the rate of growth and development of the plant. GDD are calculated several ways, so it is important to make sure GDD are calculated using the same formula that was used to establish the relationship you will use to harvest alfalfa. For instance, different base temperatures are used for different crops, and corn uses a different method of calculation entirely. Alfalfa GDD used for recommendations in this article are calculated by averaging the maximum and minimum temperature (° F) for a given day (24-h period) then subtracting the base temperature of 41°F to get the number of GDDs for that day. Daily GDD for days with an average temperature less than 41°F are set equal to 0. Finally, a seasonal total is then obtained by summing the daily growing degrees from March 1st through the current day.
BASE TEMPERATURE |
CROP |
40°F |
wheat, barley, rye, oats, flaxseed, lettuce, asparagus |
45°F |
sunflower, potato |
50°F |
sweet corn, corn, sorghum, rice, soybeans, tomato |
|
BASE TEMPERATURE |
INSECT |
44°F |
Corn Rootworm |
48°F |
Alfalfa Weevil |
50°F |
Black Cutworm, European Corn Borer |
52°F |
Green Cloverworm |
|
Modified Growing Degree Days
Modified Growing Degree Days are similar to Growing Degree Days with several temperature adjustments. If the high temperature is above 86°F, it is reset to 86°F. If the low is below 50°F, it is reset to 50°F. Once the high / low temperatures have been modified (if needed), the average temperature for the day is computed and compared with a base temperature, which is usually 50°F. Modified Growing Degree Days are typically used to monitor the development of corn, the assumption being that development is limited once the temperature exceeds 86°F or falls below 50°F. For example, if the high for the day was 92°F and the low 68°F, the average for use in the modified GDD calculation would be 86 + 68 = 154 / 2 = 77. |
Questions and Comments? Contact Us... 
Alex Crockford
Agriculture Agent
Langlade Cty UW Extension
837 Clermont Street
PO Box 460
Antigo, WI 54409-0460
Phone: 715-627-6236
Fax: 715-627-6260
Email: alex.crockford@ces.uwex.edu
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- Potato & Vegetable Production
- Soil and Nutrient Management
- Management Intensive Grazing
- Developing Agribusiness Incubators & Support Networks
- Dairy Revitalization
- Low-Cost Dairy Facilities Modernization
- Milk Quality Improvement
- Private PAT
- MG/Horticulture Support
- Website & Mass Media
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