The pink bollworm is an insect known for being a pest in cotton farming.
The pink bollworm is native to Asia but has become an invasive species in most of the world’s cotton-growing regions.
Pink bollworm larvae specifically target cotton and are difficult to control because this damaging stage is found inside the boll. The female moth lays eggs in a cotton boll, and when the larvae emerge from the eggs, they inflict damage through feeding. They chew through the cotton lint to feed on the seeds.
The National Cotton Council of the USA estimates that the pink bollworm costs American cotton producers more than US$32 million each year in control and yield losses.
News was reported that:
‘Pink bollworm is out of control in India’
KV Kurmanath, Hyderabad | March 13, 2019
That pink bollworm has developed resistance to Cry1Ac and Cry2Ab (or Bollgard-II) — the two biotech solutions currently available in India to tackle pink bollworm — is no news.
Virulent attack of the pest is destroying the fibre crop on lakhs of acres across the country, particularly in the West, Central and Southern parts.
An American pink bollworm expert says that it is impossible to tackle the menace with the current two Bt toxins being used in the country. “It has gone out of control. It’s too late. Too little,” he points out when asked about the likely control mechanisms.
“The two genes that are being used in India are now ineffective. The resistance is widespread. There is no way we can set the clock back if we use these two Bt toxins,” Bruce Tabashnik, Head of Department of Entomology at the University of Arizona, who studies pest resistance and has done extensive study on pink bollworm and its resistance to Bt toxins, told BusinessLine.
Pink bollworm may hit cotton output in Maharashtra, Telangana
According to the agriculture departments, the cotton crop that was sown before June 15 has been infested with pink bollworm above the economic threshold levels.
By Jayashree Bhosale
Pune: Cotton farmers of Maharashtra and Telangana face potentially huge losses as the respective agricultural departments have observed growing incidence of pink bollworm infestation in parts of the two states.
Along with the deficient rainfall, the pest has triggered concern among farmers, even as futures and spot prices of ginned cotton continue to rule firm.
Pink bollworm resistance towards the insecticides is a major issue of concern. Preventative treatment that might be applied during the pre-bloom period is discouraged because this can destroy many beneficial forms that keep bollworms and other pests under control. What can be done to get rid of the bollworms?
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Our product works on the mechanism of repellency. It temporarily inhibits the mating cycle of the insects. The product impairs the ability of the insects to reproduce, i.e. the insects will not lay eggs or the laid eggs will be infertile. The product causes feeding disruption in an insect by triggering an unpleasant reaction within the insect which might try to feed on the application. The product temporarily blocks the reproduction system of the insects by hindering the release of the vital hormones for growth.
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