boll
plant anatomy
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cotton cultivation
- In cotton: Cultivation of the cotton plant

…small green triangular pods, called bolls, that mature after a period of 55–80 days. During this period the seeds and their attached hairs develop within the boll, which increases considerably in size. The seed hair, or cotton fiber, reaching a maximum length of about 6 cm (2.5 inches) in long-fiber…
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