• Siddagangamma, K. R.
• Channabasavanna, A. S.
• Ajayakumar, M. Y.
• Yadahalli, G
• Mahadevaswamy

A field experiment was carried out to study the agronomic evaluation of Bt cotton (Ggossypium hirsutum) genotypes to different methods of establishment in Krishna command area of Karnataka during the kharif 2018-19 and 2019-20, at Agricultural Research Station, Malnoor, University of Agricultural Sciences, Raichur, which is located in Upper Krishna Project area of Karnataka. The experiment was designed by split-plot consisted of twelve treatment combinations, where Bt cotton genotypes viz., Jaadoo BG II, ACH 199 BG II and Bindass BG II, were taken in the main plot. The sub plot treatments were four establishment methods: seedlings raised in black polythene bags, raised in pro trays and raised in biodegradable paper cups and dibbling (direct sowing). The experiment was replicated thrice. The data recorded significantly higher seed cotton yield, gross returns, net returns and benefit-cost ratio in Jaadoo BG II seedlings raised in black polythene bags (3140 kg ha-1, ₹ 1,66,420 ha-1, ₹ 1,22,011 ha-1 and 3.75, respectively) or biodegradable paper cups (3124 kg ha-1, ₹ 1,65,530 ha-1, ₹ 1,18,831 ha-1 and 3.55, respectively); this was preceded by ACH 199 BG II seedlings raised in black polythene bags (3099 kg ha-1, ₹ 1,64,244 ha-1, ₹ 1,19,835 ha-1 and 3.70, respectively) and biodegradable paper cups (3087 kg ha-1, ₹ 1,63,592 ha-1, ₹ 1,16,893 ha-1 and 3.50, respectively); the treatments were on par with each other but significantly superior to the rest of the treatments. These treatments ensure timely planting and benefit from sowing thirty days in advance of conventional dribbling techniques. Furthermore, biodegradable paper might be a sustainable replacement for polythene bags.

Bt cotton, Genotypes, Establishment method, Transplanting, Dibbling

"AGRONOMIC EVALUATION OF BT COTTON (GOSSYPIUM HIRSUTUM) GENOTYPES TO DIFFERENT METHODS OF ESTABLISHMENT IN KRISHNA COMMAND AREA OF KARNATAKA ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.11, Issue 4, page no.a419-a432, April-2024, Available :http://www.jetir.org/papers/JETIR2404056.pdf

"AGRONOMIC EVALUATION OF BT COTTON (GOSSYPIUM HIRSUTUM) GENOTYPES TO DIFFERENT METHODS OF ESTABLISHMENT IN KRISHNA COMMAND AREA OF KARNATAKA ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.11, Issue 4, page no. ppa419-a432, April-2024, Available at : http://www.jetir.org/papers/JETIR2404056.pdf