Submitted to: Mycopathologia
Publication Type: Abstract Only
Publication Acceptance Date: 1/15/2003
Publication Date: 5/1/2004
Citation: Wilson, J.P., Holbrook Jr, C.C., Wells, L., Mandal, B., Rowland, D., Wilson, D.M. 2004. Effect of foliar application of particle films on drought stress and aflatoxin contamination of peanut. Mycopathologia 157:477.
Interpretive Summary: not required
Technical Abstract: Foliar application of Kaolin-based particle films has been shown to suppress insect pests and diseases in tree fruit, and to improve transpiration efficiency. Drought tolerant peanut lines have been shown to have greatly reduced aflatoxin contamination. The objective of this study was to evaluate the potential of SurroundTM particle film to reduce drought stress and preharvest aflatoxin contamination in peanut. Four genotypes were planted in a split plot design with five replications. Half of the plots received two sprays with surround, the other plots were untreated. All plots were inoculated with a mixture of Aspergillus flavus and A. parasiticus about 60 days after planting and subjected to drought and heat stress for the 40 days immediately preceding harvest. Surround spray treatments had no effect on visual stress, and no effect on aflatoxin contamination. Plots receiving surround spray treatment had slightly less incidence of tomato spotted wilt virus (TSWV) in comparison to untreated plots. However, this did not result in a significant increase in yield, and no effect on TSWV was observed in two other field studies. Although foliar applications of particle films may be useful for producing certain vegetable and fruits, its use appears to have little value in peanut production systems.