Variability of rainfall on the productivity of rice (Oryza sativa L.) of eastern Uttar Pradesh

Abstract

The daily rainfall data for the period of 1992 to 2011 of Eastern U.P. were analyzed to rainfall variability. Variability and Trends of rainfall for monsoon months show high, total of rainfall, total number of rainy days and length of monsoon season affected the productivity of rainfed rice. Further analysis of daily and weekly rainfall data suggests that when the quantum of rainfall during the monsoon months was close to its normal value the low production of rice can be attributed to the moisture stress during vegetative and reproductive stage of rice crop. This study provides help to former for enhancing the production of rainfed rice when plant growth is directly affected by aberrant weather.