IN THIS ISSUE OF AG UPDATE
- Comparing Drone Seeding vs. Drilled Cereal Rye Cover Crop
- Biological Nitrogen Fixation in Corn Trial Results
- Connection Cover Crops to Soil Health in Soybeans
- Calculating Carrying Capacity of a Grazing System
- Alfalfa, Cover Crop, and Forage Rotation Herbicide Restrictions
- Field Notes Episode 17: Notes on Using the Haney Test in Wisconsin
- MILK2024 - Background and Guide
- HPAI Update: Mandatory Testing of Lactating Dairy Cattle Moving Across State Lines
- Resources for Highly Pathogenic Avian Influenza (HPAI) in Cattle
- Heat Stress Abatement in Dairy Facilities
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Badger Dairy Insight | Heat stress in calves
May 21, 2024, 11:00am - 12:00pm, to register click HERE
Badger Crop Connect | Post planting herbicide applications and early season disease
May 24, 2024, 12:30pm - 1:30pm, to register click HERE
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Video of Rodrigo Werle comparing drone vs drill seeded cereal rye cover crops
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Biological Nitrogen Fixation in Corn Trial Results
Interest in biological products that aim to provide nitrogen to nonlegume crops by fixing atmospheric nitrogen for non-legume grain crops has increased in recent years. While inoculating legumes like alfalfa and soybeans with symbiotic rhizobia bacteria is a way to facilitate the process of converting atmospheric nitrogen into a plantusable form, nitrogen supply from bacteria which asymbiotically fix nitrogen in crops like corn is unknown. University of Wisconsin–Madison conducted field trials to examine if a popular gene-edited asymbiotic nitrogen fixer bacterial product, PROVEN 40, affected corn grain yield or corn grain yield response to nitrogen fertilizer.
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Connection Cover Crops to Soil Health in Soybeans
Do you grow soybeans? Are you interested in soil health? Learn about how you can participate in this study with UW-Madison Soybean Extension Specialist Shaw Conley and get an analysis of the health of your soil.
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Calculating Carrying Capacity of a Grazing System
As we move into grazing season, understanding how much livestock your pastures are able to support without being overgrazed ensures the lasting productivity and quality of your pastures along with the health of your animals. Read the article to learn more about calculating the carrying capacity of your grazing system.
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Alfalfa, Cover Crop, and Forage Rotation Herbicide Restrictions
As we move into planting season, it's important to double-check herbicide records for the field you will be planting into. Many common herbicides used for commercial crop production contain restrictions on the label. Learn more about how that affects alfalfa, cover crops, and forage.
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Field Notes Episode 17: Notes on Using the Haney Test in Wisconsin
Heard about the Haney test and want to learn more about how it might be used in Wisconsin? Listen in while we chat with leading UW researchers and outreach specialists Chris Bandura, John Jones, and Andrew Stammer on this topic. We dive in deep discussing how the Haney test can be used practically on-farm, how it calculates fertility recommendations differently than other soil tests, and what that means for Wisconsin cropping systems.
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MILK2024 - Background and Guide
Corn silage is a vital part of dairy rations in the United States, as it provides a good source of energy and effective fiber and because homegrown forages are more cost effective and nutritionally sound than purchased concentrate feeds. Hybrid selection is a key opportunity to influence the nutritive value of corn silage, but many factors must be considered during hybrid selection. This includes multiple nutrients and other traits related to yield, plant health, and drought resistance. To better evaluate the nutritive value of corn silage, the MILK index was developed to predict energy content (milk/ton) and energy yield (milk/acre) of corn silage.
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HPAI Update: Mandatory Testing of Lactating Dairy Cattle Moving Across State Lines
As of Monday, April 29, 2024, APHIS USDA put into effect mandatory testing prior to interstate (across state lines) movement of lactating cattle via a federal notice issued last week. Testing for other classes of dairy cattle will continue to be evaluated as the situation evolves. Dairy farmers should continue to work with their herd veterinarian to monitor cattle and report any related symptoms. To report herds, veterinarians should contact DATCP at (608) 224-4872 (business hours) or (800) 943-0003 (after hours and weekends).
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Resources for Highly Pathogenic Avian Influenza (HPAI) in Cattle
Highly Pathogenic Avian Influenza (HPAI) is an emerging issue that poses a significant threat to the health and well-being of dairy herds. HPAI, primarily known for its devastating impact on avian species, has recently been observed and identified in dairy cows. This influenza strain, characterized by its rapid transmission and morbidity among affected animals, requires coordinated action from all stakeholders.
Dairy farmers and the industry should prioritize strategies aimed at prevention, early detection, biosecurity, and effective management to mitigate the spread of this disease and minimize its adverse effects. Below are considerations and resources to help protect animals and humans from HPAI.
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Heat Stress Abatement in Dairy Facilities
Hot weather can bring a long list of problems for dairy producers. When cows are heat stressed, they eat less, produce less milk, have reduced immune function and higher SCC, and show reduced fertility. A spike in lameness often follows the hot season. In severe heat waves, cows can even die. In addition to the economic burden, the discomfort from heat stress also reduces animal welfare.
This fact sheet focuses primarily on cooling cows housed in barns, where they are shaded from gaining heat from direct sun exposure.
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Wisconsin Ag Climate Outlook | Stay ahead of the weather with the Wisconsin Ag Climate Outlook email list. Get timely updates, expert analysis, and strategic insights tailored to Wisconsin's agricultural landscape.
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| Will Fulwider
Regional Crops Educator - Dane and Dodge County Extension
Email: will.fulwider@wisc.edu l Ph: 608 220 3577
Alison Pfau
Bilingual Regional Dairy Educator - Dane, Dodge, Jefferson, Rock & Walworth County Extension
Email: alison.pfau@wisc.edu | Ph: 970 402 9710
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