Autecology of blood grass in wetland rice ecosystem

Based on the data on the effect of nutrient management and crop spacing on the growth and development of I. miliacea, it could be elucidated that ap-plication of enhanced nutrients exclusively as chemical fertilizers in combination with wider spacing stimulated growth and vigour of the weed. Hence an integrated approach in nutrient management is suggested for efficient and economic management of the weed. By altering nutrient management and adjusting the plant population, the competitive ability and productivity of rice crop can be improved and weed management made more efficient and economic. Considering the practical importance of the study, detailed investigation in similar lines needs to be conducted on such major weeds for the entire state under all systems of rice cultivation including upland rice.