Bio-Efficacy of Milastin-K (Bacillus subtilis KTSB 1015 1.5 A.S.) as a Biofungicide for Management of Powdery Mildew Disease in Grapes under Field Conditions

Abstract

Field bio-efficacy of Milastin-K (Bacillus subtilis KTSB-1015 1.5% A.S.) was conducted for the management of powdery mildew in grapes at National Research Centre for Grapes, Pune. Results compiled indicated that Milastin-K alone at 1.0 l/L and 2.0 ml/L sprayings (six) gave about 51.18% and 58.85% reduction in powdery mildew incidence respectively. Similarly, Milastin-K sprayings gave upto 22.48% higher yield over sulphur treatment. Likewise, four sprayings of systemic fungicides belonging to trizole group and then two spraying of Milastin-K @ 2.0 ml/L showed 99.98% control of powdery mildew on leaves and 92.31% control on bunches and increase in yield by 63.32% over sulphur treatment. Similarly, there was no any abnormality and phytotoxic effect observed by spraying Milastin-Kupto 2.0 ml/L alone or if sprayed after trizole fungicides. Therefore, Milastin-K a bio-fungicide fits well in integrated disease management and may be useful for export grape cultivation.

A Comparative Analysis of Microbe-Based Technologies Developed at ICAR-NBAIM Against Erysiphe necator Causing Powdery Mildew Disease in Grapes (Vitis vinifera L.)

“…The area under grapes in India is ~1.25 lakh hectares with an average productivity of 22.95 t/ha. Among these states, Maharashtra contributes about 75.85% to the area and 81.22% to the national grape production with a productivity of 24.58 t/ha (Sawant and Sawant, 2006 ; Sawant et al, 2017 ; Kanitkar et al, 2020 ).…”

“…Earlier, sulfur and sulfur-containing fungicides were used for controlling the powdery mildew of grapes globally (Biondi et al, 2012 ; Warneke et al, 2022 ). However, in the recent past, several other fungicides, namely, difenoconazole, metrafenone, nissodium fenarimol, bupirimate, penconozole, dimethomorph, triademefon, pyrazophos, hexaconazole, chlorothalonil, and flusilazole were introduced in India and used to control powdery mildew in grapes (Sawant and Sawant, 2006 ; Sawant et al, 2017 ; Kanitkar et al, 2020 ). Consequences of intensive pesticide use include their persistence in soils, contamination of the environment, negative impact on human health, and deterrents to the ecosystems as well as the development of resistant pathogenic strains.…”