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 …
WCM news
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 …
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 …
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 …
Black Cutworm Damage Potential for Corn
Black Cutworm Damage Potential for Corn Eileen Cullen, Extension Entomologist Corn planting and weed control delayed by wet field conditions coupled with a major black cutworm migration make black cutworm damage a likely event later …
Use automatic steering to avoid mowing the same ground twice
Use automatic steering to avoid mowing the same ground twice Matthew Digman, Research Agricultural Engineer, Dairy Forage Research Center (USDA-ARS) and T. J. Shinners, Summer Engineering Intern, University of Wisconsin – Madison …
Selecting a N fertilizer rate when corn is $7/bu
Selecting a N fertilizer rate when corn is $7/bu Carrie Laboski, Extension Soil Scientist, Dept. of Soil Science, Univ. of Wisconsin-Madison With the current price of corn in the $7/bu range, growers and agronomists have …
Influence of crop rotation and nitrogen fertilizer on oat yield
Influence of crop rotation and nitrogen fertilizer on oat yield Matt Ruark, Dept. of Soil Science, Tim Wood, Lancaster Agricultural Research Station Current UWEX nitrogen (N) application guidelines for oats are 40 lb/ac for soils …
Photosensitization of Sheep and Goats from Switchgrass hay
Photosensitization of Sheep and Goats from Switchgrass hay Dan Undersander, Extension Forage Agronomist I have had a couple reports of photosensitization of sheep from feeding switchgrass hay. After feeding the hay a week or two, the …
Latest Bt Corn Approval by EPA includes 5% Refuge In the Bag
Latest Bt Corn Approval by EPA includes 5% Refuge In the Bag Eileen Cullen, Extension Entomologist The EPA recently approved a 5% refuge-in-the-bag (RIB) Bt Corn. This registration is a licensing agreement between Monsanto and …