Vol. 12, Special Issue 8 (2023)

Author(s):
Shivani Suman, NS Bhadauria, SPS Tomar, Pradyumn Singh and Naveen

Abstract:
The present investigation was carried out in randomized block design (RBD) during Kharif 2019 at research farm, College of Agriculture, Gwalior (M.P.). The population of leafhoppers increased gradually from the 31^st to the 38^th SMW, reaching its peak during the 38^th SMW. Afterward, the population declined and eventually disappeared after the 43^rd SMW in both years. The occurrence of aphids was first observed during the 35^th SMW for both years. The population of this pest began to increase and reached its peak during the 39^th SMW. However, minimum population was recorded during the 44^th SMW in both the years. Sting bugs were first observed during the 33^rd SMW when the crops were 30 days old and reached its peak during the 38^th SMW in both years. However, starting from the 39^th SMW, the population began to decline and reached its lowest point during the 40^th SMW and 41^st SMW respectively during both Kharif 2021 and 2022, after which this pest disappeared. First appearance of spiders in field was recorded during 34^th SMW and reached to its peak during 38^th SMW during both Kharif 2021 and Kharif 2022. Afterwards population gradually decreases and reached to its minimum during 44^th SMW in both successive years Ladybird beetle first appeared during 35^th SMW and the population of ladybird beetle and reached to its peaked during 39^th SMW thereafter it started declining gradually. Minimum population recorded during 44^th SMW in both Kharif 2021 and Kharif 2022.