Wednesday, June 24, 2009

Researchers Identify Inhibitor that Controls Fungal Pathogen


"A key bacterial compound that inhibits the growth of the plant pathogen Fusarium verticillioides has been identified by Agricultural Research Service (ARS) scientists. The compound could help protect plants, livestock and poultry from fusarium infection.

The compound is produced by Bacillus mojavensis strain RRC101. Finding better controls for F. verticillioides is important because fumonisin mycotoxins—especially fumonisin B1—are toxic to livestock and poultry." Sharon Durham

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Source: Source: USDA (ARS) http://www.ars.usda.gov

Friday, June 19, 2009

Researchers Testing “One-Two Punch” Against Disease-Spreading Thrips



"Spraying tomatoes with kaolin, a type of powdered clay, and one of three plant essential oils cut in half the incidence of tomato spotted wilt disease, which is spread by thrips.


According to Stuart Reitz, an entomologist with the ARS Insect Behavior and Biocontrol Research Unit’s Tallahassee, Fla., site, kaolin forms a white coat that may interfere with thrips’ ability to zero in on color cues during flight. Thrips that do still land on treated plants may find the kaolin coat difficult to penetrate with their juice-sucking mouthparts. This, in turn, may diminish their transmission of the TSW virus, which is present in the insects’ saliva. " Jan Suszkiw


Source: USDA (ARS) http://www.ars.usda.gov/

It Pays to Furrow Dike





"Furrow diking not only saves water, but reduces irrigation costs to a point where it makes economic sense, according to Agricultural Research Service (ARS) scientists.

Furrow diking is a tillage system where soils are plowed into ridge-like barriers running alongside row crops. The ridges hold irrigation and rain water, allowing it to soak into the soil instead of washing away." Dennis O'Brien

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Source: USDA (ARS) http://www.ars.usda.gov/