Tuesday, August 14, 2007 -- 9:00 AM - 4:00 PM
Jerry Nordick Farm, Rothsay, MN
Good News! Infestations in NW Minnesota and eastern North Dakota are generally low., though populations in SW MN are increasing. Increases to the south typically signal the start of migration events that result in winged soybean aphid moving into this region. It is now time to keep notice of how aphid populations are developing in area fields and respond accordingly.
The days of soybean aphids feasting on Minnesota's soybean fields may be numbered. University of Minnesota scientists are field testing a beneficial insect--a stingless wasp also known as Binodoxys communis--that kills soybean aphids. The U received permission from the federal government to proceed with the research and is the leading institution in the testing.
Planting new stands of alfalfa during the late summer is an excellent way to establish alfalfa. Late summer alfalfa seeding is not necessarily better than spring planting, but it does provide another option that may better fit your work schedule or rotational practices.
It has been about six months now since the initial media frenzy about Colony Collapse Disorder (CCD), hit the nation’s headlines. There has been lots of discussion, congressional testimony, and lots of speculation about the potential causes and consequences of dying honey bees.
An internal parasite, described as a spore-forming protozoan that infests the hind gut of adult bees, seems to have shifted hosts from Eastern honey bee (Apis cerana) to European honey bee (A. mellifera).
Insecticides have also been cited as possible agents responsible for CCD. In particular, the class of seed treatments known as chloronicotinyls which includes imidacloprid, thiomethoxam, and clothianidin (e.g., Gaucho, Helix, and Poncho, respectively), all of which have been used in canola production in the region.