BIOLOGICAL CONTROL OF AFLATOXIGENIC FUNGI ON PEANUT: FOR THE PRE-HARVEST APPROACH

Authors : İsılay LAVKOR, Halis ARIOGLU, İsıl VAR, Sevcan OZTEMIZ

Pages : 21-27

Doi:10.17557/tjfc.562634

View : 36 | Download : 11

Publication Date : 2019-06-14

Article Type : Research Paper

Abstract :This study was carried out to determine the efficacy of different applications of a biopesticide for reduction of aflatoxin contamination in peanut. The biopesticide, afla-guard, delivers a nontoxigenic Aspergillus flavus to the field where it competes with naturally occurring toxigenic fungus. Biocontrol treatments included: insert ignore into journalissuearticles values(ı); soil application during sowing, insert ignore into journalissuearticles values(ıı); multiple application during sowing and 40 days after planting, insert ignore into journalissuearticles values(ııı); foliar application at 60 days after planting insert ignore into journalissuearticles values(ıv); control insert ignore into journalissuearticles values(untreated plots);. Biopesiticide was applied to peanut plots in 2015 and 2016 in Randomized Complete Block Design with four replications. Peanuts were collected from control and treated plots at harvest-drying-pre-storage periods and analysed for aflatoxins. Aflatoxin concentrations were generally quite low in 2015, also the aflatoxin concentration in treated samples insert ignore into journalissuearticles values(from 0.04 to 0.71 μg/kg); was reduced by 97.38 to 99.82% compared with controls insert ignore into journalissuearticles values(from 21.84 to 27.12 μg/kg);. In 2016, reductions were also noted for all biocontrol treatments insert ignore into journalissuearticles values(from 89.07 to 92.39%); compared with controls. In conjunction with the reductions in aflatoxin contamination, biocontrol treatments produced significant reductions with biopesticide in peanut. Therefore, it can be said that a biological control method is a promising approach for controlling aflatoxin.
Keywords : Aspergillus flavus, Aspergillus flavus NRRL 21882, Biological control, Peanuts