Statistical Relation Nature between Climatic Variables and Soil Moisture during the Production of Cotton (Gossypium barbadense)

The information on impact of climatic factors on cotton production is not generally available, or at least not available or at least not available in the required form. Understanding this impact may help physiologists determine a possible control of the flowering mechanism in cotton plant. Field trials, in two successive seasons using cotton G. barbadense were carried out, to investigate the relationships between climatic factors, soil moisture status, and flower and boll production. The climatic factors considered were daily maximum air temperature, minimum air temperatures, maximum-minimum temperature (diurnal temperature range), sunshine duration, maximum relative humidity, minimum relative humidity, and wind speed. Minimum relative humidity and sunshine duration were the most significant climatic factors affecting flower and boll retention and production. Temperature appeared to be less important in the reproduction growth stage of cotton in Egypt than minimum relative humidity and sunshine duration. The soil moisture status showed low and insignificant correlation to flower and boll production [1].