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Abstract
Effect of Botanical Formulation of Polygonum Minus (P-40) on Control of Alternaria Solani
R. Parimala Devi and P. Marimuthu
An ecofriendly botanical formulation "Polymin 40 EC" was developed from the chloroform extract of P. minus. The effect of various concentrations of P-40 on seed infection, germination and vigour of tomato and 2 per cent P-40 was found to increase the germination and vigour but reduced the seed infection to a significant extent. Two percent P-40 was found to be the optimum concentration for plant disease control (tomato - Alternaria solani) under pot culture conditions. Application of P-40 increased the activity of peroxidase (PO), polyphenol oxidase (PPO), phenylalanine ammonia lyase (PAL) and phenol content of the crop plants.