Growth, Productivity and Nutrient Uptake of Different Rice Cultivars under Coastal Eco-System of West Bengal

Abstract

Field experiment was conducted to evaluate the performance of different rice cultivars in terms of growth, nutrient uptake and productivity at Regional Research Station (Coastal Saline Zone), Bidhan Chandra Krishi Viswavidyalaya, Kakdwip, South 24-Parganas, West Bengal during the rainy seasons of 2015 and 2016. High yielding rice cultivars - Pratikshya, Santoshi, Sabita, Super Shyamali and Swarna Masuri, indigenous non-aromatic cultivars - Black rice, Dudheswar and Kerala Sundari and aromatic rice cultivars - Radhatilak and Gobindabhog were evaluated. The indigenous rice cultivars produced taller plants, while the HYVs produced higher dry matter m^-2 and number of tillers plant^-1. The HYV Santoshi out yielded all other tested cultivars by producing significantly higher grain yield, which was followed by other two HYVs ‘Pratikshya’ and ‘Super Shyamali. The macronutrient concentration (N, P and K) in rice grain was significantly higher in indigenous aromatic and non-aromatic rice cultivars than HYVs. Multiple linear regression analysis of grain and straw yield as a dependent variable showed that grain N concentration and straw P concentration had a positive non-significant relationship with grain and straw yield, respectively.