Kadayifci Abdullah
Department of Structure Education, Faculty of Technical Education,
University of Suleyman Demirel 32260 Isparta, Turkey
Tuylu Gokhan Ismail
Department of Structure Education, Faculty of Technical Education,
University of Suleyman Demirel 32260 Isparta, Turkey
Ucar Yusuf
Department of Structure Education, Faculty of Technical Education,
University of Suleyman Demirel 32260 Isparta, Turkey
Cakmak Belgin
Department of Structure Education, Faculty of Technical Education,
University of Suleyman Demirel 32260 Isparta, Turkey
ABSTRACT
The effects of mulch and the several irrigation water amounts on soil evaporation and on lettuce`s transpiration, evapotranspiration and yield were studied in a glasshouse pot experiment as Completely Randomised Experimental Design with three replications during 2001 (August 10 to October 2) at the Experimental Glasshouse in the Campus of the University of Süleyman Demirel, Turkey. Water losses by evaporation and/or transpiration were measured daily by weighing the pots. Irrigation water was applied twice a week. The water quantities were regulated by weight. Increasing the amount of irrigation water applied significantly increased crop evapotranspiration (mean 45%) in the Open Soil Surface (OSS) treatments and transpiration (mean 26%) in the Covered Soil Surface (CSS) treatments. In CSS treatments, evapotranspiration was significantly reduced, while transpiration was significantly increased compared with OSS treatments. Covering the soil surface reduced the amount of irrigation water required by the lettuce crop by about 60% for all irrigation treatments compared with the amount of irrigation water added in the OSS treatments, because wet soil surface evaporation was eliminated. The contribution of soil evaporation to total evapotranspiration and evaporation-transpiration ratio varied from a minimum of 40 and 66% at highest water level to maximum of 49 and 94% at lowest water level, respectively. Lettuce yield was significantly higher in CSS treatments than in OSS treatments. Especially at low water levels, lettuce yield was higher in CSS than in OSS treatment. Water use efficiency in CSS and OSS treatments was maximum for the highest water level and irrigation water use efficiency was maximum for the lower water level in CSS treatments and for the intermediate water level in OSS treatments.
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How to cite this article
Kadayifci Abdullah, Tuylu Gokhan Ismail, Ucar Yusuf and Cakmak Belgin, 2004. Effects of Mulch and Irrigation Water Amounts on Lettuce`s Yield, Evapotranspiration, Transpiration and Soil Evaporation in Isparta Location, Turkey. Journal of Biological Sciences, 4: 751-755.
DOI: 10.3923/jbs.2004.751.755
URL: https://scialert.net/abstract/?doi=jbs.2004.751.755
DOI: 10.3923/jbs.2004.751.755
URL: https://scialert.net/abstract/?doi=jbs.2004.751.755
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