ECOFRIENDLY MANAGEMENT OF WHEAT BLAST DISEASE CAUSED BY Magnaporthe oryzae triticum

Abstract

The experiment was conducted in the experimental field, Central Farm, allotted for the students of Department of Plant Pathology, Sher-e-Bangla Agricultural University, Dhaka-1207, during November 2020 to April 2021 to find out best ecofriendly management for blast disease of wheat. Three variety Prodip, BARI Gom26 and BARI Gom-28 was tested to find out highest germination percentage and blast

disease

incidence (%). Among these varieties Prodip showed highest germination (93%) and blast disease incidence (30%). Seven treatments, viz. T 1 = Garlic clove extracts, T 3 = Aloe vera leaf extracts, T 4 = Control, T 2 = Black cumin seed extracts, T 5 = Neem leaf extracts, T 6 = Nativo 75 WG and T 7 = Provax 200 WP, were used for blast disease management. The experiment was laid out in Randomized Complete Block Design (RCBD) design with three replications. Data were recorded on blast disease incidence (%), disease severity, growth and yield components of wheat. Experiment results concluded that among all treatments T 7 (Provax 200 WP) and T 5 (Neem leaf extract) performed better compared to other treatments for controlling blast disease of wheat. With T 7 (Provax 200 WP) treatment the lowest blast disease incidence (%) recorded was 7.86, 9.86 and 10.19, respectively, during the milking stage, soft dough stage, and hard dough stage of wheat. With T 5 (Neem leaf extract) treatment, a statistically equivalent reduction in blast disease incidence (%) was observed. During the milking stage, soft dough stage, and hard dough stage of wheat, the lowest blast disease severity was 1.03, 1.23 and 1.63, respectively, with T 7 (Provax 200 WP) treatment. A statistically similar reduction in blast disease severity was found with T 5

(Neem leaf extract). Therefore, it could be concluded that the treatment T 5 (Neem leaf extract) would be recommended as ecofriendly management for blast disease of wheat.