Four varieties of soybean viz., KDS-837, KDS-798, JS-335 and DS-9712 were grown to determine the effect of time of harvesting on its physical and chemical properties. The hundred seed weight of soybean significantly decreased after physiological maturity. The electrical conductivity of seed was significantly increased after physiological maturity. The protein, oil and reducing sugar of soybean seeds also increased after physiological maturity. | Effect of time of harvesting on physical and chemical properties of soybean Glycine max M. Seed