Use of saline irrigation water for production of some legumes and tuber plants

Gadalla A.M., Hamdy A., Galal Y.G.M.

Effect of irrigation water salinity on growth and production of some legumes, i.e. faba bean, chickpea and lentil as well as tuber plants like sugar beet and potatoes was investigated in lysimeter system under green house controlled conditions using drip irrigation system. Chickpea was frequently affected by saline water. Results showed that high levels of salinity negatively affected seed yield and N accumulated in tissue of faba bean. Similar trend was noticed with dry matter of lentil. While, shoot-N was increased at 6 and 9 dS/m. Both leguminous crops were mainly dependent on N2 fixation as an important source of nitrogen nutrition. Under adverse conditons of salinity, the plants gained some of their N requirements from the other two N sources (Ndff and Ndfs). Application of the suitable Rhizobium bacteria strains could be beneficial for both the plant growth and soil fertility via N2 fixation. Sugar percentage in sugar beet tubers was increased with increasing saline irrigation water under different nitrogen strategies. Exposure of two varieties of potato to different water salinity levels indicated that total yield, on the base of fresh weight, of Spunta or Nicola tubers was slightly increased by increasing water salinity level up to 6 dS/m. In general, the overall means showed the superiority of Nicola variety over Spunta variety. Also, addition of organic compost in different rates has some significant effects on starch content in tubers.



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Gadalla A.M., Hamdy A., Galal Y.G.M. Use of saline irrigation water for production of some legumes and tuber plants. In : Lamaddalena N. (ed.), Bogliotti C. (ed.), Todorovic M. (ed.), Scardigno A. (ed.). Water saving in Mediterranean agriculture and future research needs [Vol. 2]. Bari : CIHEAM, 2007. p. 85-97. (Options Méditerranéennes : Série B. Etudes et Recherches; n. 56 Vol.II). Proceedings of the International Conference WASAMED Project (EU contract ICA3-CT-2002-10013), 2007/02/14-17, Valenzano (Italy).