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Effect of
different irrigation water level on cotton yield and yield
components
Derya Onder1
*, Yasar Akiscan2, Sermet Onder1 and
Mehmet Mert2
1Mustafa
Kemal
University, Faculty of Agriculture, Department of
Agricultural Structures and Irrigation, 31034 Hatay – Turkey.
2Mustafa
Kemal University, Faculty of Agriculture, Department of
Field Crops, 31034 Hatay – Turkey.
*Corresponding author. E-mail:
deryaonder2007@gmail.com.
Tel.: +90 326 2455599. Fax: +90 326 2455832.
Accepted 10 March, 2009 |
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Effects of different water level on yield and yield
components of the drip irrigated cotton were evaluated in
Amik Plain in the East Mediterranean Region of Turkey. Four
levels of irrigation water were tested in 2003 and 2004.
Treatments were 25 (I25), 50 (I50),
75% (I75) of the full irrigation treatment (I100)
which received 100% class-A pan evaporation. Numbers of
irrigation events were 5 and 8 in 2003 and 2004,
respectively. Under I25, I50 and I75
treatment conditions,
evapotranspiration, total cotton seed yield, boll weight,
lint percentage, number of sympodial branches and leaf area
index decreased while some boll parameters such as boll
weights and opened boll numbers increased. Increase of boll
number per plant under water stress condition showed that
cotton had high ability for adapting water stress
conditions.
The highest yield was obtained in the I100 treatment. A second
degree polynomial relation could adequately describe the
cotton seed yield response to the irrigation water amount.
The highest irrigation
water use efficiency (IWUE) was obtained with the I50
treatment.
Key words:
Drip irrigation, seed yield,
water use efficiency (WUE),
cotton. |
