EI Moujabber, M CIHEAM - Istituto Agronomico Mediterraneo di Bari, Italy , Atallah, T Lebanese University - Faculty of Agricultural Sciences, Lebanon , Darwish, T National Council for Scientific Research - National Center for Remote Sensing, Lebanon , Ndayra, G Holy Spirit University - Faculty of Agricultural Sciences, Lebanon

Etude de la tolérance de la fraise( Fragaria vivace) à la salinité au Liban

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Among the economical resources of Lebanon, the share of agriculture from the water resources is the highest (75% of the Lebanese water resources). As a result of overpumping the salinity of the irrigation water has increased in coastal regions, which affects the plant production. In order to have a national database on crop tolerance to salinity, we propose in this work to study the strawberry (Fragaria vivace), a crop known for its sensitivity to salinity. A two-factorial -salinity and soil texture- experiment was run in pots under greenhouse conditions between December and May. The salinity factor was studied under two levels of0.9 (S1) and 1.7 (S2J ds.m- , as well as two soil textures: sandy soil (T1) and clay soil (T2) The drainage water, the leafarea, the production, the number offlowers, the number ofleaves, the yield and the leafwater potential were followed during the period of experimentation. Neither the size ofpiant nor the number offruits was affected by the salinity. However the highest yield was for T2S1, which was significantly different from treatments in sandy soil. No difference was detected, however, between treatments in clay soil. However, the highest yield was T2SJ with 4.5 Kg/m2 yield The water consumption in allfour treatments varied between 300 and 400 mm. Predawn leaf water potential was affected by irrigation interval and salinity but not by soil texture. A relationship was established between the water consumption and the yield An adequate water management through irrigation frequency and leaching allows using mildly saline water, which normally affects strawberry production. This management is even more adapted to clay soil rather than sandy soil.

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Fragaria vivace , water stress , salinity , soil texture , Lebanon

Lebanese Science Journal

44