Estimation of Disease Intensity against Cercospora Leaf Spot of Okra (Abelmoschus esculentus L.) Moench through Bio-control Agents with Chemical Fungicides under Prayagraj Condition of India

Abstract

Okra (Abelmoschus esculentus L.) also known as bhendi is one of the most common vegetable preferred in every household of India. Cercospora leaf spot incited by Cercospora abelmoschi. is one of the emerging disease in Uttar Pradesh Region. An experiment was conducted in Central Research Farm ,SHUATS , Prayagraj in Kharif season of 2022 to evaluate the efficacy of bioagents and chemicals viz., T0 – Untreated control,T1 Mancozeb (1%) + Trichoderma(4%)  , T2 - Mancozeb (1%) + Pseudomonas(4%) , T3 Mancozeb (1%) + Bacillus subtilis(4%), T4 - Mancozeb (1%) + Trichoderma (2%) + Pseudomonas(2%)  ,T5 -  Mancozeb (1%) + Pseudomonas(2%) + Bacillus subtilis(2%), T6  Mancozeb (1%) + Bacillus subtilis(2%) + Trichoderma(2%), T7 - Mancozeb (1%)  against    Cercospora leaf spot of okra. C. abelmoschi initiates with sooty black, angular spots and cause heavy defoliation Studies revealed that minimum disease intensity was observed in T4 - Mancozeb (1%) + Trichoderma (2%) + Pseudomonas (2%) and is hereby considered as the best treatment out of all the treatments.