Year: 2001
Type: article
Abstract: The introduction and subsequent rapid adoption of Bt. transgenic cotton hybrids ( Gossypium species) have un- doubtedly been the most significant event in the history of cotton in India. Besides providing resistance against lepidopteron pests, the Bt. hybrids matured earlier, were more determinate, had a rapid leaf area development, re- tained more early set fruiting forms and perhaps have a shallower root system. Both researchers and farmers dur- ing the last decade have been fine-tuning the agronomy to maximize the benefits from Bt cotton. Some prominent changes accompanying this technology have been, compulsory seed treatment with imidachloprid, advancement in sowing wherever supplemental irrigation was available, a delay in sowing in the traditional rainfed till the soil pro- file absorbs sufficient moisture, application of atleast 25% higher fertilizer dose, shift towards balanced fertilization, foliar application of K and micronutrient mixtures. Adoption of drip irrigation and fertigation, more widespread use of booth pre-emergence (pendimethalin) and post-emergence herbicides (quizalofop ethyl and pyrithiobac so- dium), practice of stale seed bed technique for weed management, pruning and extension of crop duration are some other agro techniques which are being adopted by Bt. cotton farmers.
Source: Indian Journal of Agronomy
Authors: D. BLAISE, M.V. VENUGOPALAN, A.R. RAJU
Institution: Central Institute for Cotton Research
Language: English
Subfield: Plant Science
Domain: Life Sciences
SDG: Zero hunger
Open Access status: bronze
OpenAlex ID: W1536685693