Vol. 11, Issue 9 (2022)

Author(s):
Nalini Kapoor, Vinod Kumar, Anupam Kumar, Alok Kumar, Kailash Sati, Om Prakash, and Neha Kumari

Abstract:
The present investigation entitled "Biology of mustard aphid (Lipaphis erysimi Kaltenbech)” in Mandi District of Himachal Pradesh" were carried out at Laboratory of Abhilashi University Mandi (Chail-chowk), during Rabi season 2021-2022, Studies on Lipaphis erysimi Kalt. Revealed that the nymph passed through four distinct instars before attaining the adult stage. Total nymphal period was considered from birth of first instar to the end of fourth instar. It ranged from 6 to 9 days with an average of 7.25±0.22 days. The entire life period (birth of young ones to death of adult) was minimum of 8-17.5 days with an average of 16±0.48 days.