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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.
Original file (365 × 638 pixels, file size: 301 KB, MIME type: image/png) This is a file from the Wikimedia Commons . Information from its description page there is shown below.
The phenological growth stages and BBCH-identification keys of cotton are: Growth stage Code Description ... First floral buds detectable ("pin-head square") 4: 52:
Pyrrhocoridae is a family of insects with more than 300 species world-wide. Many are red coloured and are known as red bugs and some species are called cotton stainers because their feeding activities leave an indelible yellow-brownish stain on cotton crops.
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In botany, a bud is an undeveloped or embryonic shoot and normally occurs in the axil of a leaf or at the tip of the stem. Once formed, a bud may remain for some time in a dormant condition, or it may form a shoot immediately. Date: 26 September 2007: Source: self-made with the clasification found in the same wikipedia page: Author
The caterpillars feed on buds, flowers, grains, fruits, pods; sometimes leaves and stems. In cotton they are found on the vegetative part and reproductive structures. In corn, millet at sorghum they attack the grain. In tomato and beans caterpillars bore into young fruits and in chickpea they attack foliage and consume developing seeds. [14]
Gossypium (/ ɡ ɒ ˈ s ɪ p i ə m /) [2] is a genus of flowering plants in the tribe Gossypieae of the mallow family, Malvaceae, from which cotton is harvested. It is native to tropical and subtropical regions of the Old and New Worlds.
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