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.
Although it is one of the species that is commercially cultivated as an annual field crop, most of the cotton (in excess of 90%) that is commercially grown in the world today comes from G. hirsutum, a New World species commonly known as upland cotton. Levant cotton needs a long hot summer.