Peanut Pointers

  

JOHN BEASLEY
University of Georgia
Extension Peanut Agronomist

Toward the end of the season, there are numerous pest-related problems that must be monitored. Diseases can cause problems all year long, right up until harvest. Therefore, a disease management program must be maintained – especially foliar disease protection. Do not forget to apply fungicides up to within two weeks of harvest.

Late-emerging weeds do not affect yield by robbing water and nutrients but can cause significant yield reduction by interfering with fungicide applications and harvest. Do not let late-emerging weeds get out of hand by getting taller than the peanut canopy.

Insects are the pest problem that will rob yield and grade potential if not monitored closely late in the season. Walk and scout each field to check for foliage-feeding and pod-feeding insect species. Check with your county Extension office for recommended insecticides, rates and timing of applications.

 
Todd Baughman
Texas A&M University
Extension Agronomist

Irrigation is an extremely important, if not the most critical, input for peanut yield in Texas. Making sure to not get behind on irrigation is vital to insuring maximum yields. Even in a wet year like last year, there were instances where growers waited too long to start irrigation and subsequently had less-than-ideal yields.

Peanuts have a seasonal water requirement of 24 to 28 inches, which must be supplied through stored soil moisture, rainfall or irrigation. Unfortunately, Mother Nature has not been kind so far, and it appears much of this will have to be supplied through irrigation. Water requirements are highest from bloom through kernel development, and any deficit during this period will result in reduced yield. Once we get behind on water in Texas, we generally never catch back up. Make sure to stay ahead of the water-use curve.


David Jordan
North Carolina State University
Extension Agronomist
Controlling insects, disease and even weeds continues to be important. Fall armyworm and corn earworm thresholds help in controlling these pests. Hopefully, it won’t be a “spider mite year” like 2007. In case it is, try to control mite patches before they become well established. Minimize unnecessary fungicide and insecticide sprays to minimize mite outbreaks, especially in dryland production. Use high pressure and a higher-than-normal water volume when applying mite control products. Mixing agrichemicals to control multiple pests in a single application is possible, but some mixtures compromise control. See www.peanut.ncsu.edu for a compatibility guide or the April issue of this magazine. Apogee can be used for excessive vine growth. While it is considered “pricey” by many, it is very effective in managing excessive growth. Talk with folks that have applied the material before you treat a high number of acres with Apogee.

 

Kris Balkcom
Auburn University
Agri-Program Associate

The weather this year is very similar to the last two years. The forecast throughout the next week is predicting good chances for rain. So, let’s be hopeful that the weather is turning around.

The early planted peanuts are beginning to start setting their crop, and it’s a little early for the later-planted peanuts. So we still have time to produce a good crop. Keep in mind the need to apply a material for white mold if we start receiving some timely showers on the earlier planted peanuts because of the hot, dry conditions they have endured. The white mold outbreaks have shown to be severe in these situations.

PG