Effect of Soil and Foliar Application of Plant Nutrients on Purple Blotch and Tip-Burn of Onion

An experiment was conducted in the field of Plant Pathology Division, BARI, Cazipur, during Robi 2015-16, 2016-17 and 2017-18 cropping seasons to evaluate efficacy available plant nutrients against purple blotch disease tip-burn onion. Eight different viz. Potassium (ZnSO4 fertilizer), Phosphorus (TSP Boron (Boron Zinc Calcium (CaSO4 Copper (CuSO4), Silicon (silica gel) Manganese (MnSO4 fertilizer) were tested Soil foliar application Potassium, Phosphorus, Boron, Zinc, Calcium, Copper, formed water solution gave appreciable reduction incidence increased growth such as shoot root well yield Among Silicon, performed better for reducing severity (upto 62.78%), 72.22%) increasing Application also than control. So, soil might be recommended management onion production Bangladesh. Bangladesh J. Agril. Res. 46(2): 153-165, June 2021