Evaluation of Washington Navel orange trees on sour orange and Volkamer lemon grown on slightly alkaline clayey soil conditions [electronic resource].

Includes references.

Growth, leaf mineral content, yield, and fruit quality of Washington Navel orange trees on sour orange and volkamer lemon rootstocks were evaluated during 1997-2001 seasons under North Delta conditions. The trees were planted in Sep.1993 at the Experimental Farm of Sakha Agricultural Research Station where the soil is slightly alkaline clayey soil. Trees growth on volkamer lemon was larger (tree height, trunk diameter and cross sectional area, canopy volume, and leaf area and dry weight) than that on sour orange. Trees on volkamer lemon were cropped one-year earlier, more productive and the cumulative yield per tree (over 6-years production period) were significantly higher compared with those on sour orange. Also, yield efficiency (fruit weight kg/m3 of canopy or yield per TCSA kg/cm2 ) was significantly affected.

Summary in Arabic.

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