Different drip irrigation regimes affect cotton yield, water use efficiency and fiber quality in western Turkey

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

“…The highest yield was achieved when the SMP threshold was controlled above −20 kPa. In contrast, the seed cotton yields ranged from 5.04 to 5.76 Mg/ha in 2009, which was in accordance with the results reported for other regions under drip irrigation (Plaut et al, 1988;Ibragimov et al, 2007;Hu et al, 2009; Dagdelen et al, 2009) and higher than the average yield level achieved by local farmers. ANOVA revealed that the SMP threshold had a significant (P ≤ 0.05) effect on the seed cotton yield in 2009.…”

“…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).…”

“…In general, our results were different from those of previous studies conducted in different regions. Dagdelen et al (2009) and Ünlü et al (2011) reported that the IWUE of cotton in Turkey under drip irrigation was 14.4 and 33.1 kg ha −1 mm −1 , respectively. Ibragimov et al (2007) found that the IWUE was between 6.2 and 11.2 kg ha −1 mm −1 in Uzbekistan, which was similar to the values observed in this experiment.…”

“…Numerous cotton irrigation studies have revealed that drip irrigation increased the cotton yield by over 15% when compared with flooding and furrow irrigation (Wanjura et al, 2002;Ibragimov et al, 2007;Dagdelen et al, 2009;Ünlü et al, 2011).…”