University of Minnesota Extension
www.extension.umn.edu
612-624-1222
Menu Menu

Extension > Minnesota Crop News > July 2014

Friday, July 25, 2014

Soybean and Corn Diseases Occurring in Minnesota - July Update

By Dean Malvick, Extension Plant Pathologist

A number of different root and leaf diseases have been appearing in soybean and corn fields across Minnesota. Most are of minor concern at this point, but some have been more problematic. This article focuses on diseases that have been reported or may be favored by weather conditions and have raised questions or concern.

Monday, July 21, 2014

Preharvest Management Options for Wheat

by Jochum Wiersma, Small Grains Specialist

Winter wheat, if not already there, is quickly approaching physiological maturity. The earliest seeded spring wheat is soon to follow. And thus, it is time to evaluate your pre-harvest management options. Follow this link to read a quick review of your options. Although there are very persistent assertions, pre-harvest glyphosate - when applied according to the label - should not result in changes in grain protein.

HRSW varieties differ for their resistance to pre-harvest sprouting. This high-temperature dormancy peaks at physiological maturity. Repeated wetting and drying of the grain in a swath or even while standing will degrade this dormancy over time. The dormancy of some varieties break down sooner than other, potentially resulting in sprout damage. See the Field Crop Trials to look up the ratings for the current HRSW varieties. The best remedy to avoid pre-harvest sprout damage is to harvest timely, even if that means that you are above 13.5% grain moisture content

Finally, many wheat fields are showing tall off-types. Click here for the reasons tall off-types appear in spring wheat. Varieties that are notorious for off-types are Mayville, LCS Albany, and Rollag.

Tuesday, July 8, 2014

Sauk Centre Hay Auction June 15, 2014 and Forage Field Day July 16

by Dan Martens, Extension Educator, Stearns-Benton-Morrison Counties
marte011@umn.edu by phone, if a local call to Foley 968-5077 or 1-800-964-4929


1. June 5 Hay Auction Results
2. July 16 Forage Field Day / Dairy Tour Near Kimball

Continue Reading for Links to reports (including averages calculated for October 2013 to May 2014 auction season), Tour Flyer, and other information.

Thursday, July 3, 2014

Late season applications of nitrogen in spring wheat

Jochum Wiersma and Albert Sims, University of Minnesota

Interest in improving grain protein in hard red spring wheat (HRSW) with in-season applications of nitrogen (N) fertilizer may increase this year, since protein premiums and discounts are expected to be greater this year than last. Despite the late planting, the cool and wet weather has created a scenario where the crop may be a bit short on N to maximize grain protein.

There is an intuitive appeal to split apply N (N applied preplant and more N applied during the growing season) in HRSW since the crop takes up the majority of its N between jointing and flag leaf emergence. The practice of splitting the total N fertilizer gift in three or even four separate applications is commonplace in winter cereal production in the maritime regions of Europe, including the countries of Denmark, the Netherlands, the United Kingdom, and France. The objective of split N applications is to supply N when the crop needs it, improve N use efficiency, and consequently achieve maximum grain yield and/or grain protein with fewer N fertilizer inputs.

  • © Regents of the University of Minnesota. All rights reserved.
  • The University of Minnesota is an equal opportunity educator and employer. Privacy