Performance of hybrid rice (Oryza sativa L.) at different levels of phosphorus and zinc application.

摘要

An experiment were carried out to study the effect of different levels of phosphorus and zinc application on the performance of hybrid rice during kharif of 2005 and 2006. Different levels of phosphorus and zinc had significantly influenced on the growth, yield and yield attributes characters. Variety Proagro-6207 attained maximum plant height i.e. 120 and 126 cm followed by NDRH-2, Proagro-6444 and Sarju-52 at 80 days after transplanting. Maximum number of green leaves/plant (29.95 and 31.65) and leaf area index (6.97 and 7.18) were observed in variety Proagro-6444 followed by NDRH-2, Proagro-6207 and Sarju-52 in both the crop season. Grain yield and yield attributes significantly with increasing rates of phosphorus and zinc application. Effective tillers/m2 (323.11 and 329.11), length of panicle (33.48 cm and 34.32 cm), number of grains/panicle (120.60 and 125.50) and grain yield q/ha (72.75 and 76.43) were recorded in variety proagro-6444. In all the hybrids viz. Proagro-6207, NDRH-2 and Proagro-6444 recorded significantly higher grain yield than local check variety Sarju-52 with increase in phosphorus and zinc levels.