White mold is a disease of soybean and other broadleaf crops. Historically, white mold on soybean has been observed sporadically in central Illinois, writes Carl Bradley in the Illinois IPM bulletin this past week. He says it is more frequently found in northern Illinois, and rarely in southern Illinois, but the cool (temperatures below 85°F) and wet conditions, especially when soybean plants are blooming, are favorable for the development of white mold.
White mold gets its name from the fuzzy white growth that can be observed on affected soybean plants. Symptoms include wilting leaves, stems that appear to be "bleached," and shredding of the stem tissue. Small black structures known as sclerotia can be found on and inside plants that have been affected by white mold.
Management of the disease is difficult, and multiple practices must be integrated to achieve the best control. See Carl Bradley's white mold on the IPM website for complete details.
WHITE MOLD
July 27, 2009
Most postemergence soybean herbicides have a preharvest interval or a soybean developmental stage beyond which applications should not be made specified on their respective label. Labels of some products, such as Pursuit and Extreme, indicate both a developmental stage (before soybean bloom) and a preharvest interval (85 days). Preharvest intervals indicate the amount of time that must elapse between application of the herbicide and crop harvest. Farmers and applicators should be aware of both, and follow label directions.
PRE-HARVEST INTERVALS
July 27, 2009
Doug Yoder, Sr. Director of Marketing – Illinois Farm Bureau
Farmer and landowners are this week making decisions that will affect income for four season's. Todd Gleason has a list of the most important things to know about the ACRE program.
July 13, 2009
Darrel Good, Ag Economist – University of Illinois
USDA has raised next year's soybean ending stocks to 250 million bushels and left this year's number at 110. Todd Gleason files this report on how one ag economist imagines the number crunchers arrived at those interesting figures.
July 6, 2009
Darrel Good, Professor Emeritus – University of Illinois
The June 30 USDA reports put another nail into the flagging corn market. The report showed nearly 3 million more acres of corn had been planted this season than most in the trade had expected. Todd Gleason has the details.
July 6, 2009
Darrel Good, Professor Emeritus – University of Illinois
It is quite likely the average cash price for the corn crop farmers planted this past spring will be less than four dollars a bushel, and so will the price for the crop still in the bin from last fall. That's a very low price compared to this time last year, and should, as Todd Gleason reports, cause farmers around the nation to reconsider their risk management options even as livestock and ethanol producers breath a sigh of relief.
July 6, 2009
Fabian Fernandez, Extension Soil Fertility Specialist – University of Illinois
The wet start to the growing season has left corn growers with no other alternative than to side-dress applications of nitrogen. As Todd Gleason reports, they've been asking the University of Illinois Extension Soil Fertility questions about when and how to apply N.
July 6, 2009
Gary Schnitkey, Farm Management Specialist – University of Illinois
The FarmDOC team at the University of Illinois has posted a series of articles, spreadsheets, and presentations on the web to help farmers decide whether or not to enroll in the federal governments new ACRE (acre) program. Todd Gleason has more the decision and the tools.
July 6, 2009
Darrel Good, Professor Emeritus – University of Illinois
Soybean plantings in the U.S. are huge this season, but not as big as had been expected. Couple that with quickly dwindling old crop supplies and, as Todd Gleason reports, it means old crop prices will stay high, but that the new crop might not follow along so closely.
