Open AccessIMPACT OF ENTOMOPATHOGENIC BACTERIA BACILLUS THURINGIENSIS ENTOMOPATHOGENIC ON THE YIELD AND QUALITY OF APPLE FRUIT
Author(s) -
Олена Володимирівна Шерстобоєва,
О. А. Демидов,
A. B. Kryzhanivskyi
Publication year - 2016
Publication title -
sìlʹsʹkogospodarsʹka mìkrobìologìâ
Language(s) - English
Resource type - Journals
ISSN - 1997-3004
DOI - 10.35868/1997-3004.23.49-53
Subject(s) - bacillus thuringiensis , yield (engineering) , sugar , biology , strain (injury) , horticulture , food science , chemistry , bacteria , materials science , genetics , anatomy , metallurgy
It was established that treatment of apple trees for control over harmful insects with liquid preparations based on entomopathogenic strains of Bacillus thuringiensis 03071, 0376, and 0408 which synthesize protein endotoxins and water-soluble exotoxin, provides a yield of fruit according to the level of 16.2–18.1 t/ha, whereas treatment with preparation based on strain B. thuringiensis 787, that does not contain exotoxin in metabolites, contributes to the yield at the level of only 12.7 t/ha. Treatment of apple trees with preparation based on the strain B. thuringiensis 0408 contributed to growth of fruits with increased vitamin C concentration. Biopreparations had no negative impact on the quality of resulting product, in particular on the content of sugars and organic acids in apple fruits. Only after treatment of apple trees with preparation based on the strain B. thuringiensis 0371 and chemical insecticide Confidor extra, slight exceed of optimal sugar-acid balance in apple fruits was found for studied variety Jonagold by 1.1 and 1.5 U, respectively.