Assessing the performance of transgenic Bt cottons through mother and baby trial
DOI:
https://doi.org/10.59797/ija.v58i4.4243Keywords:
Bt cotton genotypes, Fibre quality, Mother and baby trial design, Seed cotton yieldAbstract
The performance of different Bt cotton (Gossypium species ) hybrids were compared in mother and baby trial design to assess the potentiality of the hybrids under scientifically managed (mother) vs farmer growing practices (baby trial) in red soil under rainfed condition. The field experiment (mother trial) was conducted in farmer field during 200809 and 200910. In evaluation of different genotypes in red soil, Bt cotton MRC 6918 recorded sig- nificantly higher seed-cotton yield (2.26 t/ha) than all other cotton genotypes and found on par with Bunny BG II (2.20 t/ha) and RCH 2 BG II (2.09 t/ha). The significantly higher gross returns of 89,131/ha and net returns of 64,917/ha was obtained in MRC 6918 as compared to all other genotypes. The higher uptake of nutrients (N,P,K) was recorded with MRC 6918 at 120 days after sowing. DHH 11 non Bt recorded higher fibre fineness (4.60 micronaire) and fibre maturity (0.76) than other genotypes. Higher yield (1.73 t/ha) was recorded in baby trial with Bunny BG II and differed significantly with mother trial (2.20 t/ha)References
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