SW MN IPM Stuff Newsletters

Newsletters are released throughout the growing season to give information on current and emerging pest problems and management techniques as well as updates on weather conditions and crop development. 

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2021 Newsletters

  • Issue 1 | February 9, 2021 - A discussion on if many soybean varieties containing SCN resistance sources other than PI 88788 are available for MN
  • Issue 2 | April 9, 2021 - Planting is here - a few things to watch, commentary on factors that will impact pest pressure this growing season, and 2 insecticides with Section 2(ee) supplemental labels for soybean gall midge
  • Issue 3 | April 23, 2021Weather systems conducive to insect migration and insect migrants have been lacking, topsoil is dry in some fields so watch your planting depth, and an update on planting and insect conditions for common crops
  • Issue 4 | May 6, 2021Some risk from black cutworms in southern MN, begin to scout stands as soon as they emerge, and do not ignore insect pest (cereal aphids) potential in winter cereal crops
  • Notes | May 11, 2021 - a brief note on alfalfa weevil and millipedes in minimum and no-till
  • Notes | May 14, 2021 - a brief note on crop emergence, aster leafhopper, and black cutworm
  • Issue 5 | May 21, 2021Start scouting alfalfa insects and pay attention to cutworms in all crops but particularly corn and sugarbeets now
  • Issue 6 | June 8, 2021 - Scout potato leafhopper in alfalfa and dry beans, corn rootworm will start to hatch soon, corn borer adult emergence is on, soybean aphids will be moving from buckthorn to soybean, do not confuse crane fly larvae for cutworms
  • Issue 7 | June 18, 2021 - SCN females present on roots, scout potato leafhopper in alfalfa and dry beans, corn rootworms are hatching - still a bit early to float larvae, soybean aphids present at low populations, and soybean gall midge adults are emerging and some larvae are starting to appear in soybean stems
  • Issue 8 | July 2, 2021 - Corn rootworm beetles are starting to appear in southern MN, univoltine European corn borer moth flight is starting, soybean herbicide injury again - What else did you expect?, bean leaf beetles will emerge soon, wilting of soybean gall midge infested plants has begun, soybean aphid populations remain low, Most if not all MN soybean aphid populations are widespread in the state but at low populations, cereal aphids beginning to move to other crops, a very large armyworm moth flight detected, and army cutworm moths arrive
  • Issue 9 | July 9, 2021 - Corn rootworm damage is unusually high this year. Extended diapause is back; Make decisions on univoltine European corn borer; Soybean herbicide injury might be more complicated than just dicamba; Most if not all MN soybean aphid populations are widespread in the state but at low populations; Flea beetles abundant now but seldom if ever economic.
  • Issue 10 | July 14, 2021 - Corn rootworm beetles are abundant now, do not base any decisions on the edge of the field
  • Notes | July 17, 2021 - A brief note on armyworm and two spotted spider mites
  • Issue 11 | July 21, 2021 - some thoughts on foliar fungicides with study results for soybean and corn, scout to make adult corn rootworm control decisions, two spotted spider mites are at treatable levels in some dry areas
  • Issue 12 | July 28, 2021 - Corn rootworms are having a good year, armyworms like grass, new county added for soybean gall midge, watch for lygus in sugarbeet
  • Issue 13 | August 20, 2021 - Soybean gall midge has been found in 25 new counties this year - watch for signs in your fields, EPA revokes crop tolerances for chloryprifos, and corn disease and harvest updates
  • Issue 14 | September 23, 2021 - Check your cereal rye cover crops, grass pastures, and grass hay ground for fall armyworm.