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A Study on Irrigation Scheduling of Onion (Allium cepa L.) in Turkey

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Author(s): A. Halim Orta | Mehmet Sener

Journal: Journal of Biological Sciences
ISSN 1727-3048

Volume: 1;
Issue: 8;
Start page: 735;
Date: 2001;
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Keywords: Onion | evapotanspiration | irrigation scheduling | yield components

ABSTRACT
This study was conducted to analyze the response of onion (Allium cepa L.) to different irrigation scheduling and subjected to four irrigation treatments during the years of 1997 and 1998 according to available soil water depletion fractions of 0.30, 0.50, 0.70 and no irrigation. The yield and yield components except solids soluble in bulbs were affected by irrigation and soil water depletion fractions. The highest yield was obtained from the plots in which irrigation water was applied at soil water fraction level of 0.30. Maintenance of soil moisture depletion level at 0.30 required 339.4 mm and 227.2 mm of irrigation water in 1997 and 1998, respectively. The seasonal evapotranspiration of onion was 420.0 mm in 1997 and 351.2 mm in 1998.
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