Vol. 11, Issue 12 (2022)

Author(s):
Priti S Shigwan, Kumud V Naik, MS Karmarkar, PB Sanap and AV Mane

Abstract:
The field experiment was conducted to study the seasonal incidence of tobacco caterpillar, S. litura infesting cabbage during rabi season of 2020-21 and 2021-22 at Central Experiment Station, Wakawali, Dr. Balasaheb Sawant Konkan Krishi Vidyapeeth, Dapoli. The population of S. litura ranged from 0.28 to 5.04 and 0.24 to 7.72 larvae per plant during rabi 2020-21 and rabi 2021-22, respectively. The peak population of S. litura was observed in 4^th and 2^nd SMW during rabi season of 2020-21 and 2021-22, respectively. However, pooled data on both the years revealed that the S. litura population was in the range of 0.14 to 6.26 larvae per plant, whereas peak population was observed during 2^nd SMW. The population of S. litura was fluctuating till the harvesting of cabbage. During rabi 2020-21, the mean population of S. litura exhibited positive non-significant correlation with maximum and minimum temperature, wind speed and bright sunshine hours, while negative non-significant correlation with morning and evening relative humidity. During rabi 2021-22, the mean population of S. litura showed positive non-significant correlation with morning and evening relative humidity and wind speed, while negative non-significant correlation with maximum and minimum temperature and bright sunshine hours. The pooled data of S. litura population showed positive non-significant correlation with minimum temperature, morning and evening relative humidity and wind speed whereas, the maximum temperature and bright sunshine hours had negative non-significant correlation with S. litura population.