An organ pipe is a sound-producing element of the pipe organ that resonates at a specific pitch when pressurized air (commonly referred to as wind) is driven through it. Each pipe is tuned to a specific note of the musical scale. A set of organ pipes of similar timbre tuned to a scale is known as a rank or a stop.
1 In general, cotton grows quicker as the average temperature rises and the longer and hotter the season, the greater the yield. 2  The growing season from planting to picking lasts approximately six months, as outlined below.
Cotton is produced in Cameroon's far northern provinces where it is the main cash crop . More than 300,000 farmers cultivate 172,000 hectares (424,840 acres) to produce 60-80,000 metric tons of cotton fiber a year.