The Latest

Events

  1. Kansas: K-State Program to Help Farmers Deal with Historic Ag Downturn

    December 7, 2016 @ 8:00 am - February 15, 2017 @ 5:00 pm
  2. Louisiana: LSU Rice Clinics Scheduled Jan. 5 to Feb. 8 in 6 Locations

    December 20, 2016 @ 8:00 am - February 9, 2017 @ 5:00 pm
  3. South Carolina: 4 Upcoming Forest Management Workshops for Woodland Owners

    January 12 @ 8:00 am - February 10 @ 5:00 pm
  4. Minnesota: Weed Resistance Workshops for Jan., Feb.

    January 13 @ 8:00 am - February 24 @ 5:00 pm
  5. Louisiana: LSU Offers 3 Irrigation Workshops in Jan., Feb.

    January 17 @ 8:00 am - February 14 @ 5:00 pm
  6. Illinois: 4 Regional Crop Management Conferences in Jan., Feb.

    January 18 @ 8:00 am - February 15 @ 5:00 pm
  7. Georgia Ag Forecast Series Scheduled Jan. 18-27

    January 18 @ 8:00 am - January 27 @ 5:00 pm
  8. Texas: Pecan Short Course, College Station, Jan 23-26

    January 23 @ 8:00 am - January 26 @ 5:00 pm
  9. Missouri: 9 ‘Grow Your Farm’ Sessions from Jan. – March

    January 23 @ 8:00 am - March 11 @ 5:00 pm
  10. Texas: Red River Crops Conference, Childress Jan. 24-25

    January 24 @ 8:00 am - January 25 @ 5:00 pm
  11. South Carolina: Cotton, Peanut Grower Meetings, Sentee, Jan. 24, 26

    January 24 @ 8:00 am - January 26 @ 5:00 pm
  12. Missouri: 4 Farm Retirement, Succession, Estate Planning Workshops in Jan., Feb.

    January 24 @ 8:00 am - February 14 @ 5:00 pm
  13. Arkansas Soil & Water Education Conference, Jonesboro, Jan. 25

    January 25 @ 8:00 am - 5:00 pm
  14. Georgia: Cotton Production Workshop, Tifton, Jan. 25

    January 25 @ 8:00 am - 5:00 pm
  15. Texas: Feed Grains Marketing Workshop, Amarillo, Jan. 25-26

    January 25 @ 8:00 am - January 26 @ 5:00 pm
  16. Virginia Eastern Shore Ag Conference and Trade Show, Melfa, Jan. 25-27

    January 25 @ 8:00 am - January 27 @ 5:00 pm
  17. Louisiana: Conservation Program Workshop, West Monroe, Jan. 25

    January 25 @ 8:00 am - 5:00 pm
  18. Middle Tennessee Grain Conference, Manchester, Jan. 26

    January 26 @ 8:00 am - 5:00 pm
  19. Texas: Pesticide Applicator Course, Harleton, Jan. 26

    January 26 @ 8:00 am - 5:00 pm
  20. Texas: Feral Hog Program, Falfurrias, Jan. 26

    January 26 @ 8:00 am - 5:00 pm
  21. Nebraska Livestock: 8 Nutrient Management Workshops in Jan. and Feb.

    January 26 @ 8:00 am - February 7 @ 5:00 pm
  22. Rice Industry: Upcoming Meetings in MS, AR, LA, in Jan., Feb.

    January 26 @ 8:00 am - February 8 @ 5:00 pm
  23. Texas: Llano Estacado Cotton Conference, Muleshoe, Jan. 30

    January 30 @ 8:00 am - 5:00 pm
  24. Texas: Feral Hog Management Workshop, La Vernia, Jan. 30

    January 30 @ 8:00 am - 5:00 pm
  25. Alabama: Upcoming Crop Production Meetings, Jan. 30, Feb. 7

    January 30 @ 8:00 am - February 7 @ 5:00 pm
  26. Indiana: Ag Business Management Workshop, West Lafayette, Jan. 31 – Feb. 2

    January 31 @ 8:00 am - February 2 @ 5:00 pm
  27. Texas: ‘Last Chance’ CEU Training, San Angelo, Jan. 31

    January 31 @ 8:00 am - 5:00 pm
  28. California: Farm Labor Management Workshops Scheduled in February

    February 1 @ 8:00 am - February 2 @ 5:00 pm
  29. Tennessee: Grain & Soybean Producers Conference, Dyersburg, Feb. 2

    February 2 @ 8:00 am - 5:00 pm
  30. Texas: Grain Elevator Workshop, Amarillo, Feb. 2

    February 2 @ 8:00 am - 5:00 pm

Georgia Peanuts: When Do You Spray For Worms?

Owen Taylor
By Stephanie Hollifield, County Extension Coordinator, Brooks County, Georgia July 19, 2014

Please be aware that there have been several reports of worms in peanuts. The foliage feeders that I have observed were fall armyworm caterpillars. The treatment threshold for foliage feeding caterpillars in peanuts is 4-8 larvae/row ft.

  • The low level of four caterpillars/row ft. should be used if the peanuts are small and/or stressed.
  • The higher level of eight caterpillars/row ft. may be used if the middles have lapped or close to lapping.
  • Also, the higher threshold level is acceptable if peanuts are healthy and vigorously growing. Depending upon the type of foliage feeder present, there are numerous insecticide treatment options.
  • However, consideration of effect on beneficial insect population should be used during insecticide selection.

Dr. Mark Abney (UGA Peanut Entomologist) has reported Lesser Cornstalk Borer (LCB) activity in South Georgia. Fields will need to be scouted to determine the presence of LCB. Also, be observant of LCB moths from the peanut foliage as you walk fields. Keep in mind, that LCB thrives in hot, dry conditions and light sandy soils.

When scouting for LCB, check several locations in each field by pulling and examining one to three plants at each location. By pulling up the plant, you can more easily locate the caterpillars. When examining the plants look for larvae, feeding damage, and silken tubes covered with soil. It may be challenging to find the larvae because they are often inside the silk tubes or inside the stems of the peanut plant.

Click image to enlarge.

Currently, the only recommended product for LCB control is granular Chlorpyrifos (Lorsban 15G). The liquid formulations of Chlorpyrifos are not registered for foliar application in peanuts. Please remember that granular chlorpyrifos cannot be applied by airplane to peanuts. To be effective granular chlorpyrifos must have rainfall or irrigation.

The application of Chlorpyrifos will kill beneficial insects and increase the risk of foliage feeding caterpillars and spider mites. Research conducted at UGA has found that foliar insecticides do not provide control of LCB. Dr. Abney is currently testing a variety of foliar insecticides against LCB and we will provide the results when available.

LCB populations can be slowed by rainfall and cooler temperatures. But, once an outbreak of LCB has occured, we cannot depend on rainfall alleviating the situation. Lesser cornstalk borer is probably the most serious pest of peanuts in Georgia. It is important to observe fields for moth activity and examine plants regularly.

Owen Taylor
By Stephanie Hollifield, County Extension Coordinator, Brooks County, Georgia July 19, 2014