Seasonal Incidence of Rice Brown Plant Hopper in Relation to Sri and Conventional Methods of Planting and Its Correlation with Weather Parameters

Rice brown plant hopper, Nilaparvata lugens Stal. recorded peak hill damage (2.82%) and nymph and adults population (3.17/hill) during first week of October (40^th SMW) under conventional method. Whereas under SRI method, the highest hill damage (2.42%) and population (2.54/hill) was observed during last week of September (39^th SMW). The coefficient correlation revealed that the maximum temperature and bright sunshine hrs influence the damage of the brown plant hoppers positively, while minimum temperature and relative humidity showed negative impact.