Efficacy evaluation of certain "bio" products on powdery mildew pathogens on tomatoes and melons in laboratory conditions

Abstract

The purpose of this experimentwas to study the biological efficacy of "bio"products Mimoten 0.3% (80% Mimosa tenuifolia extract) and Zytron 0.15%(20% citric seeds extract), ontomatoes and melons against Erysiphe sp. and Sphaerotheca fuliginea, respectively. The experiments were carried out in "wet chambers" (in thermostat at 26± 20C and 60 -70% RH) on detached leaves with similarlevels ofthe attackdegreefrom tomato and melonsplants attacked by Erysiphe sp. on tomatoes and Sphaerotheca fuliginea onmelons. The combination of Mimoten 0.3% + Zytron 0.15% products had the best efficacy incontrollingof both pathogensErysiphe sp.on tomatoes(76.3%) and Sphaerotheca fuliginea on melons (65.4%).