Appl Response of tomato plants to de cit （番茄植物de cit的反应）.pdfVIP

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Appl Response of tomato plants to de cit （番茄植物de cit的反应）.pdf

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Appl Response of tomato plants to de cit （番茄植物de cit的反应）

Journal of App lied Horticulture, 9(2): 9 7-100, July -December, 2007 Appl Response of tomato plants to de cit irrigation under surface or subsurface drip irrigation Miguel A. del Amor1 and Francisco M. del Amor2 1Consej ería de Agricultura y Agua de la Región de Murcia. Plaza Juan XXIII. 30008 Murcia, Spain. 2Instituto Murciano de Investigación y Desarrollo Agrario y A limentario. C/ Mayo r s/n. 30150 La A lberca. Murcia. Sp ain. e-mail:f ranciscom. delamor@carm.es Abstract Field studies were conducted to compare the yield and fruit quality of processing tomatoes in surface and subsurface drip irrigation, with 100 and 50% of crop evapotranspiration (ETc). The results showed that when irrigation was reduced by 50% ETc the subsurface treatment showed higher water content at root depth compared with the on-surface treatment. At 50% ETc subsurface irrigation yield increased by 66.5% compared with the surface treatment. However at 100% ETc no signi cant difference in total fruit yield was observed between irrigation methods. The super cial and water-stressed treatment increased the pH and the acidity of the fruits but the subsurface treatment did not show differences with respect to the full-irrigation treatments. Our results show that the subsurface drip irrigation method could be reasonably applied for processing tomato when water resources are limited. Key words: Yield, crop quality, total soluble solids (TSS), drought, stress, Solanum lyc op ersicon L. Introduction 1 and 2, respectively. Soil electrical conductivity was measured in the saturated paste extract. The soil