Tag Archives: Crop Protection

Palmer Amaranth Adaptability

This weed’s ability to survive goes beyond its penchant for developing resistance to herbicides. By Ramon Leon, Extension Weed Specialist, West Florida REC, and Jay Ferrell, Extension Weed Specialist, Agronomy Department, University of Florida Palmer amaranth, commonly referred to as Palmer pigweed, is perhaps the most problematic weed in the southern United States, especially in row-crop production. This weed can ... Read More »

Making Management Adjustments

Be critical about fungicide selection, timing and ability to move down the plant in what could be a year of increased disease.  By Amanda Huber The first line of defense in disease management in peanuts is crop rotation. However, the projected increase in acreage means that crop rotations are being shortened. Scott Monfort, University of Georgia Extension peanut specialist, estimates ... Read More »

Weed Control Options

Peanut growers are fortunate to have 18 active ingredients registered for use as herbicides. In general, these herbicides are very effective when applied at the appropriate rate and time. Failure to start clean at planting, residual herbicides that are not activated with timely irrigation or rainfall, postemergence applications to weeds larger than 3 inches tall and unfavorable environmental conditions, such ... Read More »

Will The Warm Winter Produce More Disease?

Regrowth of winter host plants create a haven for disease pathogens and nematode populations. A La Niña weather pattern is providing warmer winter temperatures for Georgia residents, sparking farmers’ concerns about potential plant diseases at the start of production season in early spring. University of Georgia Cooperative Extension plant pathologist Bob Kemerait says that farmers rely on extreme cold and ... Read More »

When In Drought, Don’t Forget To Scout

Insect populations fluctuate greatly with temperature and moisture. Year 2016 was an interesting one that started with a very wet spring followed by a drought starting in June with a dramatic reduction in precipitation that lasted five months. Looking at climate data from Clanton, Ala., as an example of what happened last year, after the last big rain event in ... Read More »

PEANUT Rx 2017

In 2016, losses to tomato spotted wilt across the peanut production region of the Southeastern United States increased slightly compared to losses from 2015. Losses associated with spotted wilt were approximately 3 percent in 2015 and 3.5 percent in 2016, though tomato spotted wilt was more severe in some fields than in others. Also, tomato spotted wilt was less severe ... Read More »

Crop Recap: Weather Weary Year

Drought leaves producers facing difficult decisions on dryland fields.  Weather conditions deteriorated during the latter part of the summer in Georgia and little rainfall was recorded at critical stages of the growing season. Scott Monfort, University of Georgia Extension peanut specialist, estimates that as much as one-third of Georgia’s dryland crop has produced very little. So little, in fact, that ... Read More »

Seed Treatment Resistance In Thrips

University of Florida researchers study the resistance of tobacco thrips to  neonicotinoid seed treatments; additional insecticide applications may be needed. By Danielle Sprague and Joe Funderburk, North Florida REC, University of Florida, IFAS Tobacco thrips, Frankliniella fusca, are seedling pests of peanut, soybean and cotton throughout the southern United States. Adults and larvae feed on the developing leaves, causing injury ... Read More »

Mid- To Late-Season Options: What’s available for weed control after early season herbicides dissipate?

By Peter Dotray and James Grichar, Texas A&M AgriLife Research Preplant and preemergence herbicides have likely done what they can, and new weed flushes are starting to emerge. Herbicides applied early postemergence that do not have soil activity may give way to new weed flushes as well. In other words, good early season weed control may need some attention because ... Read More »

What Has Changed With Propiconazole Use?

The European Food Safety Authority’s review of older products, such as propiconazole, found a lack of sufficient residue data in peanuts, other crops. What happens now? By Alan Henn, Extension Plant Pathologist, Mississippi State University Most peanut growers have received notification from their buying points not to use any fungicides containing propiconazole this year. This active ingredient is found in ... Read More »