New video – Wisconsin’s pre-sidedress nitrate test (PSNT)

New video – Wisconsin’s pre-sidedress nitrate test (PSNT) Carrie Laboski, Extension Soil Scientist, Dept. of Soil Science, University of Wisconsin-Madison, Kevin Shelley, Outreach Specialist, Nutrient & Pest Management Program, University of Wisconsin- Madison The corn has been planted and is … Continue reading

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Black Cutworm Feeding on Bt Corn Technology

Black Cutworm Feeding on Bt Corn Technology Eileen Cullen, Extension Entomologist Reports of black cutworm feeding (chewing holes in leaves) and cut plants are coming, with two calls this week. Late planted corn is still smaller than V4-V5 making it … Continue reading

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True Armyworm Larva – Scout Corn and Wheat Fields

True Armyworm Larva – Scout Corn and Wheat Fields Eileen Cullen, Extension Entomologist The insect feeding activity report of note I received this week is that of true armyworm larvae on corn in LaCrosse County in Western Wisconsin. I have … Continue reading

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Update on Alfalfa Weevil and Potato Leafhopper as Alfalfa Transitions from First Crop Hay to Second Crop Growth

Update on Alfalfa Weevil and Potato Leafhopper as Alfalfa Transitions from First Crop Hay to Second Crop Growth Eileen Cullen, Extension Entomologist Alfalfa Weevil – Larval populations of alfalfa weevil have been gradually increasing in first crop alfalfa. The WDATCP … Continue reading

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Considerations for Switching Soybean Maturity Groups for Delayed Plantings

Considerations for Switching Soybean Maturity Groups for Delayed Plantings Shawn P. Conley, State Soybean and Wheat Extension Specialist, John Gaska, Outreach Specialist, University of Wisconsin, Madison Delayed corn planting coupled with frequent rainfall events and poor planting conditions have postponed … Continue reading

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Heaving in Alfalfa Fields

Heaving in Alfalfa Fields Dan Undersander, Forage Agronomy Extension Specialist Heaving is problem in some alfalfa stands each year in the Midwest. Heaving occurs on heavy soils that have high moisture contents. Repeated freezing and thawing causes soil expansion and … Continue reading

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Soybean Aphid Scanty on Buckthorn in the Upper Midwest

Soybean Aphid Scanty on Buckthorn in the Upper Midwest Eileen Cullen, Extension Entomologist Data from the North Central Regional Soybean Aphid Suction Trap Network sheds light each year on 1) abundance of soybean aphid migrating from soybean to its overwintering … Continue reading

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Corn Hybrid Relative Maturity Switch Dates for 2011

Corn Hybrid Relative Maturity Switch Dates for 2011 Joe Lauer, Corn Agronomist With the cool wet spring we have had so far in 2011, planting corn in northeast Wisconsin has been delayed. In general, if all corn In Wisconsin could be … Continue reading

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Early Season Insect Calendar: Seed Corn Maggot

Early Season Insect Calendar: Seed Corn Maggot Eileen Cullen, Extension Entomologist Please see last week’s Wisconsin Crop Manager Vol. 18(8) for a black cutworm scouting alert in corn from emergence through V5 stage. Remember to scout Bt corn hybrids for … Continue reading

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Longevity of S Availability from Large Gypsum Applications

Longevity of S Availability from Large Gypsum Applications Dick Wolkowski, Extension Soil Scientist The recent interest in the use of FGD gypsum as a soil amendment has resulted in some questions about the longevity of the S supply to crops … Continue reading

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