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Cotton bollworms are a significant pest of cotton. [1] "A major pest in hot countries of irrigated crops. Enters into a summer diapause when irrigated crops are not present and the soil and air temperatures are high. When the end of the dry season comes, the rain cools the soil and pupae come out of diapause." (Nibouche 2004)
The use of Bt cotton in India has grown exponentially since its introduction in 2002. [25] Eight years after the deployment of Bt cotton, India became the number one exporter of cotton globally and the second largest cotton producer in the world. India has bred Bt-cotton varieties such as Bikaneri Nerma and hybrids such as NHH-44. [26]
It is known as the cotton bollworm, corn earworm, Old World (African) bollworm, or scarce bordered straw (the lattermost in the UK, where it is a migrant). [2] [1] The larvae feed on a wide range of plants, including many important cultivated crops. It is a major pest in cotton and one of the most polyphagous and cosmopolitan pest species.
Bollworm is the common term for a moth larva that attacks the fruiting bodies of certain crops, especially cotton. The most common moths known as bollworms are: Red or Sudan bollworm, Diparopsis castanea; Rough bollworm, Earias perhuegeli; Spotted bollworm, Earias fabia; Spiny bollworm, Earias insulana; Spotted bollworm, Earias vittella
They chew through the cotton lint to feed on the seeds. Since cotton is used for both fiber and seed oil, the damage is twofold. Their disruption of the protective tissue around the boll is a portal of entry for other insects and fungi. The pink bollworm is native to Asia, but has become an invasive species in most of the world's cotton-growing ...
Cotton fabric was known to the ... that is toxic to a number of pests especially the bollworms. For most producers, Bt cotton has allowed a substantial ...
The boll weevil (Anthonomus grandis) is a species of beetle in the family Curculionidae.The boll weevil feeds on cotton buds and flowers. Thought to be native to Central Mexico, [1] it migrated into the United States from Mexico in the late 19th century and had infested all U.S. cotton-growing areas by the 1920s, devastating the industry and the people working in the American South.
Helicoverpa punctigera, the native budworm, Australian bollworm or Chloridea marmada, is a species of moth in the family Noctuidae.This species is native to Australia. H. punctigera are capable of long-distance migration from their inland Australian habitat towards coastal regions [2] and are an occasional migrant to New Zealand.
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