Studies on Performance of Bt Cotton Hybrids against Jassids (Amrasca bigutulla bigutulla Ishida) During Summer Season
Jampala Rajashekar *
Department of Entomology, College of Agriculture, PJTSAU, Rajendranagar, Hyderabad, 500030, India.
K. Rajashekar
Department of Entomology, ARS, Adilabad, India.
K. Vijaya Lakshmi
Department of Entomology, College of Agriculture, PJTSAU, Rajendranagar, Hyderabad, 500030, India.
Sreedhar Chauhan
Department of Agronomy, ARS, Adilabad, India.
*Author to whom correspondence should be addressed.
Abstract
Cotton (Gossypium hirsutum. L) is indeed a significant cash crop grown in three agro-climatic zones of India. The Indian subcontinent is considered the birthplace of cotton, and it has been a crucial part of human civilization for centuries. It is renowned as the most important natural fibre or vegetable wool and has been cultivated for both domestic consumption and export purpose for proximately 111 countries worldwide. Cotton is a vital crop that plays a significant role in the global economy. It provides livelihoods for over 250 million people worldwide and accounts for nearly 7% of the labour force in developing countries. The field experiment was carried out at Agricultural Research Station (ARS), Adilabad, Telangana during summer 2022-23. A Total of 8 Bt cotton hybrids were evaluated against jassids of cotton under unprotected conditions. Lowest population of jassids were recorded in hybrid NCS-2778 (3.76 jassids per 3 leaves), followed by RCH-659 (5.41 jassids), PRADEEP (6.27 jassids), MOKSHA (6.45jassids per 3 leaves). The highest population of jassids were recorded in JADHU (9.91 jassids) and MONEY MAKER (7.70 jassids).
Keywords: Bt-cotton, jassid, NCS-2779, RCH-659, JADHU