Seasonal Incidence of Diamond Back Moth in Broccoli (Brassica oleracea var. italica)
KM Rinki *
Institute of Agriculture and Natural Sciences (IANS), Deen Dayal Upadhyaya Gorakhpur University, Gorakhpur , UP., India.
Saroj Chauhan
Institute of Agriculture and Natural Sciences (IANS), Deen Dayal Upadhyaya Gorakhpur University, Gorakhpur , UP., India.
Pawan Kumar
Institute of Agriculture and Natural Sciences (IANS), Deen Dayal Upadhyaya Gorakhpur University, Gorakhpur , UP., India.
Ritesh Kumar
Institute of Agriculture and Natural Sciences (IANS), Deen Dayal Upadhyaya Gorakhpur University, Gorakhpur , UP., India.
*Author to whom correspondence should be addressed.
Abstract
The present field experiment was conducted at entomology research field, Institute of Agriculture and Natural Sciences, Deen Dayal Upadhyaya Gorakhpur University, Gorakhpur during Rabi, 2022-23, for studying the seasonal incidence of Diamond back moth in broccoli. The broccoli planted in plot size of 3x3.15 m in three replications with spacing of 60x45 cm during first week of November. First appearance of DBM in broccoli field was started in 49th SMW 2nd week of December, the pest population reached at peak in 2nd SMW 2nd week of January. The correlation studies showed that maximum temperature, minimum temperature is significantly negatively correlated to pest population whereas morning relative humidity showed negative non- significant correlation with the pest population, rainfall had non-significant and evening relative humidity had positively significant effect on the pest population.
Keywords: Broccoli, pests, DBM, seasonal incidence, correlation and weather parameters