Study on the comparative performance of urea and neem coated urea on the yield and yield attributes of rice variety triveni

Abstract

A field experiment to study the comparative performance of urea and neem coated urea on the yield and yield attributes of rice variety-Triveni was conducted at the College of Agriculture, Vellayani, Kerala during Virrippu season of 1973. The treatments consisted of four levels of nitrogen (0), 40, 80 and 120 kg N/ha) and five methods of applications ie. (1) full basal urea (2j full basal neem coated urea (3) 75% basa! urea -I- 25% urea as top dressing (4) 75% basal urea 4- 25% neem coated urea as top dressing, and (5) 75% basal neem coated urea + 25% neem coated urea as top dressing. It was found that the number of panicles per square meter, 1000 grain weight and yield of grain and straw were increased by nitrogen application. The application of 40 kg nitrogen as neem coated urea was found to be equivalent to 80 kg nitrogen as urea as far as the yield of grain was concerned. The results showed that rieem cake can be profitably used to increase the efficiency of urea applied to wet land rice.