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War on pink bollworm to save Bt Cotton
2017/9/24 view:
Warangal: An all-out multi-level campaign has been launched on a war-footing against the dreaded pink bollworm attack that has been causing havoc to Bt cotton crop across India.
Over the years, pink bollworm (PBW) has developed resistance to Bt cotton and during the last cotton season alone, the pest caused a crop loss ranging from 20% to 25% across the states. Some farmers even lost the entire crop as it had to be uprooted due to severe damage.
This year, the loss could even go up, which could lead to major agrarian crisis, if timely checks are not implemented, experts have said. To overcome this problem, the Union government has recommended a unique RIB concept (Refugia In Bag) wherein 25 gram of non-Bt cotton seed is mixed with 450 gram of Bt cotton seed.
This new RIB system makes farmers plant non-Bt plants compulsorily as seeds are mixed inside bag. Such non-Bt plants can host PBW wild insects (which are not resistant to Bt) and prevent resistance buildup in PBW by mating with mutant insects (which have developed resistance) whose progeny again lose the resistance.
Over the years, pink bollworm (PBW) has developed resistance to Bt cotton and during the last cotton season alone, the pest caused a crop loss ranging from 20% to 25% across the states. Some farmers even lost the entire crop as it had to be uprooted due to severe damage.
This year, the loss could even go up, which could lead to major agrarian crisis, if timely checks are not implemented, experts have said. To overcome this problem, the Union government has recommended a unique RIB concept (Refugia In Bag) wherein 25 gram of non-Bt cotton seed is mixed with 450 gram of Bt cotton seed.
This new RIB system makes farmers plant non-Bt plants compulsorily as seeds are mixed inside bag. Such non-Bt plants can host PBW wild insects (which are not resistant to Bt) and prevent resistance buildup in PBW by mating with mutant insects (which have developed resistance) whose progeny again lose the resistance.
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