TAILIEUCHUNG - Effect of environmental factors on incidence of yellow stem borer (Scirpophaga incertulas Walker) in rice (O. sativa L.) ecosystem of Varanasi region

The present investigation was conducted on submergence rice variety Swarna sub-1 to study the effect of environmental factors on the incidence of yellow stem borer, Scirpophaga incertulas (Walker) during Kharif season of 2016 and 2017 at Agricultural Research Farm, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi. The infestation of yellow stem borer was noticed in the field from 2nd week of July to 4th week of October during both Kharif season of 2016 and 2017. The maximum dead hearts (DH) and white ear head (WEH) were recorded in 40th Standard meteorological week (SMW) ( DH) and 44th Standard meteorological week (SMW) ( WEH) during both Kharif seasons of 2016 and 2017. These studies revealed that per cent dead heart was a significant positive correlation with maximum, minimum and average temperature, evening and average relative humidity while white ear head showed a significant positive correlation with maximum and minimum temperature and evening and average relative humidity. Other parameters showed a negative relationship with the dead heart and white ear head of yellow stem borer. | Effect of environmental factors on incidence of yellow stem borer (Scirpophaga incertulas Walker) in rice (O. sativa L.) ecosystem of Varanasi region

• Nông nghiệp
• Dead hearts
• Environmental factors
• White ear head
• Yellow stem borer
• Ecosystem of Varanasi region
• Insecticide molecules
• Scirpophaga incertulas
• White earheads and rice
• Insecticides finds