Impacts of Planting Density on Nutrients Uptake by System of Rice Intensification under No-tillage Paddy in Korea

Abstract

The System of Rice Intensification (SRI) is a new concept of increasing the yield of rice produced in farming. Therefore, we investigated the impacts of planting density on nutrient uptake as affected by SRI under no-till cropping system. The field was prepared as a randomized complete block design with three treatments: 10×10 cm, 20×20 cm and 30×30 cm planting densities. The root dry mass was significantly increased in the wider planting densities (p -1 for T-N and 29.9 kg ha -1 for P than other planting densities plots, but K and Mg uptake were significantly higher in 10×10 cm planting density plot (p