Vol. 10, Special Issue 12 (2021)

Author(s):
Sapna Devi, Kiran Rana, Neha Negi, Harish Kumar Sharma and Meena Thakur

Abstract:
Seasonal incidence of brood diseases in Asian honey bees, Apis cerana F. in relation to weather parameters was carried out at A. cerana apiary maintained by the Department of Entomology, Dr. Y. S. Parmar University of Horticulture and Forestry, Nauni, Solan during January, 2019 to December, 2020. Pooled data on European foulbrood disease incidence showed that the disease incidence array from 0.80 to 17.50 per cent. The incidence was maximum (17.50%) in the month of July when temperature, relative humidity and rainfall were high and minimum in the month of March (0.80%) when temperature and relative humidity were low. The disease prevalence was assuredly correlated with temperature, colony strength and rainfall. Incidence of Thai sacbrood disease varied from 0.10 to 6.90 per cent and was maximum during the month of May (6.90%) when the colony strength, brood area and temperature were high and relative humidity and rainfall were low. The disease incidence was minimum in the month of October (0.10%) when temperature and rainfall were low. No incidence of brood diseases and Thai sac brood disease was observed in the month of December in both the years of study.