The top leaves of my sesame til are folded and webbed together with small caterpillars inside, and now the capsules have holes with caterpillars eating the seed. Plants look damaged at the top. Gujarat. What is attacking it?
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Folded and webbed top leaves with small caterpillars inside, that later bore into the capsules and eat the seed, is the leaf roller and capsule borer of sesame, often the same pest acting at different stages. Because it shelters inside webbed leaves and capsules, scout early and act before it enters the capsules, since once inside, control is hard and seed is already lost. Pick and destroy webbed shoots and bored capsules with the larvae in light infestations. On threshold spray a recommended insecticide directed at the folded tops, rotating modes of action, and follow label dose and PHI, taking care with the short duration of the crop so the PHI is respected before harvest. Confirm the pest and the chemical with your KVK or Sardarkrushinagar Dantiwada Agricultural University.
Once they get into the capsules it is too late, the seed is gone. I started checking the folded top leaves early and spraying then, which caught them before the capsule stage.