Water use and lint yield response of drip irrigated cotton to the length of irrigation season

Effects of different water levels on cotton growth and water use through drip irrigation in an arid region with saline ground water of Northwest China

“…These differences may have been due to the prolonged growing period in 2009. Because of the increased competition between leaves and bolls for available assimilates, excessive irrigation water can lead to delayed maturity and reduced number of open bolls (Karam et al, 2006). This phenomenal was confirmed in this study.…”

“…As reported by many researchers, deficient irrigation practices can cause a significant decline in cotton vegetative growth parameters (Ibragimov et al, 2007;Dagdelen et al, 2009;Ünlü et al, 2011) while excessive irrigation can cause an increase in vegetative growth and a decrease in yield (Guinn et al, 1981;Ertek and Kanber, 2003;Karam et al, 2006). The rules were also observed in the present study.…”

“…In this study of Xinjiang area, the highest cotton yield was obtained when the amount of irrigated water was around 600 mm. This was different from those in the Aegean region of Turkey and the Bekaa Valley of Lebanon where the highest cotton yield obtained with the amount of irrigation water of 708 mm and 549 mm (Dagdelen et al, 2009;Karam et al, 2006).…”

Evapotranspiration and water-use efficiency of irrigated colored cotton cultivar in semiarid regions

“…As the evapotranspiration decreased during this growth stage, the water input was primarily responsible for the increase in crop evapotranspiration and crop coefficient. This result agrees with the findings of [30], who observed that irrigation was largely responsible for the boll number of cotton and about 70% -75% of seasonal evapotranspiration in all irrigation treatments occurred roughly during the 85 -92 day period between sowing the seeds to full bloom.…”

Effect of Different Levels of Irrigation and Nitrogen on Growth and Yield of Bt Cotton

“…Water and nitrogen are the key inputs for improving the cotton productivity, which must be used in most efficient manner to sustain the cotton productivity at higher level. Moisture stress had adverse effect on yield as well as excess irrigation decreases the yield and increases the growing season (Wanjura et al, 2002 andKaram et al, 2006). Similarly nitrogen deficiency in cotton reduces vegetative and reproductive growth and induces premature senescence, there by potentially reduces the yields (Tewiodle and Fernandez 1997), where as high nitrogen availability may shift the balance between vegetative and reproductive growth towards excessive vegetative development thus delaying maturity.…”