Crop water stress index for potato under furrow and drip irrigation systems |
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Authors: | Tolga Erdem A Halim Orta Ye?im Erdem Hakan Okursoy |
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Institution: | (1) Faculty of Tekirdag Agriculture, Department of Farm Structures and Irrigation, University of Trakya, 59030 Tekirdag, Turkey |
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Abstract: | Summary This study was conducted to determine the crop water stress index (CWSI) for potato (Solanum tuberosum L.) grown under furrow and drip irrigation methods and subjected to three different irrigation levels (100, 50 and 0% replenishment
of soil water depleted). The lower (non-stressed) and upper (stressed) baselines were determined empirically from measurements
of canopy temperatures, ambient air temperatures and vapor pressure deficit values. Tuber yield decreased when mean CWSI prior
to irrigation exceeded 0.68 in furrow and 0.81 in drip irrigation. The tuber yield was directly correlated with the seasonal
CWSI values and the linear equations for furrow and drip irrigation methods, Y = −45.82 CWSI + 50.69 and Y = −52.65 CWSI +
58.44, respectively, can be used for yield prediction. |
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Keywords: | potato crop water stress index (CWSI) furrow irrigation drip irrigation |
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