The water relations of Verna Lemon trees from flowering to the end of rapid fruit growth |
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Authors: | M J Sánchez-blanco A Torrecillas F Del Amor A Leon |
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Institution: | (1) U. E. I. Riego Localizado, Centra de Edafologia y Biologia Aplicada del Segura (CSIC), P. O. Box 195, E-30080 Murcia, Spain;(2) Programa de Asesoramiento en Riego. Consejerìa de Agricultura, Ganaderia y Pesca de Murcia, P. O. Box 195, E-30080 Murcia, Spain |
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Abstract: | Lemon plants (Citrus limonum L. cv. Verna) were grown in the field under two different flood irrigation treatments. The dry treatment received four irrigations
per year (March, July, September and November) and the wet treatment one monthly. The amounts of water applied per year for
dry and wet treatments were 340.0 mm and 1020.0 mm, respectively. The effects of the two treatments on certain aspects of
the plant water relations during the period between flowering and the end of rapid fruit growth (critical period) were studied.
Soil matric potential (ψm) and leaf water potential (ψi) values in the dry treatment revealed development of water stress
during the experimental period. The water supply in the wet treatment seems sufficient to achieve the crop water requirements.
The g1 values in July were higher in the wet than dry treatments. Pronounced oscillations in g1 from sunrise to afternoon were found especially in the dry treatment. |
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