Vol. 10, Issue 11 (2021)

Author(s):
Kawsar Rasool, Sheikh Bilal Ahmad, Abdul Rouf Wani, Munazah Yaqoob, Showkat Maqbool, Khalid Rasool and Mohd Anwar Bhat

Abstract:
Field experiments were conducted during Kharif seasons of year 2020 and 2021 to evaluate the seasonal incidence of Diamondback moth on cabbage and influence of weather parameters on its population. Infestation of diamondback moth appeared first in the month of April and reached peak (7.20 larvae/ plant and 6.53 larvae/ plant) in June during both the years. Correlation studies revealed that the maximum temperature had a significant positive correlation (r= 0.5823 and r= 0.7173) with the larval population. Minimum temperature showed non- significant (r= 0.4956) and significant (r = 0.7931) positive correlation in the respective years. Though, the relative humidity morning (r= -0.738 and r= -0.339) and evening (r= -0.57 and r=-0.288) were negatively correlated. However rainfall had negative but significant and non- significant relation (r= 0.5001 and r=-0.259) with the larval population during 2020 and 2021, respectively.