by Ken Ostlie

Problems with lodging in field corn have been reported across Minnesota.  Goose-necked or falling stalks from a variety of causes can complicate harvest and lengthen harvesting times.  With earlier rainy and snowy weather already delaying harvest, growers can ill afford the surprise of unexpected lodging in their fields.  Occasional damage from corn rootworms in triple-stack corn has also occurred. Now is the time to assess how well fields are standing, adjust harvesting priorities and investigate the causes behind unexpectedly lodged corn.

Dean Malvick, Department of Plant Pathology, University of Minnesota

Recently there have been numerous reports of "moldy corn" across Minnesota. The late harvest, high moisture corn, and continuing wet conditions have contributed to this problem. At least two main questions should be considered. Are the problems at this point significant ear and kernel rots that are damaging the kernels, or is the problem primarily superficial growth of fungi on the grain surfaces? Both types of fungal growth on corn can cause greater problems with grain quality if the corn is not harvested and dried properly. The current problems with "moldy corn" are still not completely clear, but we can make some general comments on what we have seen and heard so far.

By Ken Ostlie and Bruce Potter

Reports of spider mite infestations continue from both soybean and corn, particularly from areas with prolonged drought.  Even if you've received rain recently, check for mite activity along field edges to determine if you've got a building problem.  You may need to factor spider mites into a soybean aphid spray decision.

The article is available on the web at: http://swroc.cfans.umn.edu/SWMNPEST/09publications/spidermite.pdf.

Well so much for the relatively arthropod pest- free growing season.