Vol. 12, Special Issue 9 (2023)

Author(s):
Khadse Sachin Ramesh, Bhadauria NS, Tomar SPS, Pradyumn Singh and Mahor Dheerendra

Abstract:
Succession and incidence of insect fauna on chilli were studied in Gird region of M.P. during Rabi 2018-19 and 2019-20. During investigation two insects were appeared as pests at different stages of the crop i.e. 1-2 twigs, vegetative, flowering, fruiting and harvesting. In all, two insect pests namely aphid, Aphis gossypii (Glover) and thrips, Scirtothrips dorsalis (Hood); and one predator ladybird beetle, Coccinella septempunctata (Linnaeus); Menochilus sexmaculatus (Fabricius) were observed on different stages of the crop. The activity of aphid was observed from second week of December during 2018 (50^th SMW) and first week of December during 2019 (49^th SMW), respectively and remained active till harvesting of the crop. The aphid population reached its peak during third week of February during 2018 (7^th SMW) and second week of February during 2019 (6^th SMW). Thrips population was appeared in second week of December during 2018 (50^th SMW) and last week of November during 2019 (48^th SMW) and remained active till harvesting of the crop. Thrips population reached its peak in fourth week of February during both years (8^th SMW). The ladybird beetle was first appeared in third week of December during 2018 (51^th SMW) and second week of December during 2019 (50^th SMW) and remained active till harvesting of the crop. The ladybird beetle population reached at its peak in third week of February during both years (7^th SMW). The correlation of aphid population with all meteorological parameter showed no significantly relationship. Significant positive correlation was noticed between maximum temperature and thrips population. Significant positive correlation was noticed between minimum temperature and thrips population. Significant negative correlation was noticed between morning relative humidity and thrips population. Significant positive correlation was noticed between maximum temperature and ladybird beetle population. Significant positive correlation was noticed between minimum temperature and ladybird beetle. Significant negative correlation was noticed between evening relative humidity and ladybird beetle. Significant positive correlation was noticed between population of aphid and ladybird beetle.