Vol. 11, Issue 9 (2022)

Author(s):
Prince Mahore, Pradyumn Singh, NS Bhadauria, Sahab Singh Pippal and Dheerendra Mahor

Abstract:
The present investigation entitled “Seasonal activity of Aphid (Mayzus persicae Sulzer) on Brinjal (Solanum melongena L.) And correlation with abiotic factor” has been proposed to be carried out at Research Farm, College of agriculture, Gwalior (M.P.) during summer season 2021 and 2022. Aphid first appeared on the crop on 11^th SMW and 13^th SMW during summer 2021 and 2022. Thereafter infestation continued till 23^th SMW to 24^th SMW. The peak population (7.10 aphids/plant) of aphid was recorded on 18^th SMW, while the second-year peak population was observed on 20^th SMW with 7.60 aphids per plant. Correlation studies carried out during 2021 and 2022 between meteorological parameters and population of aphid, showed positive correlation between maximum temperature (r=0.67 and r=0.74), minimum temperature (r=0.77 and r=0.84) and evaporation (r=0.59 and r=0.78) respectively. Whereas showed negative correlation (r= -0.52 and -0.60) between morning relative humidity and aphid population as per both year of study.