Effect of foliar application of yeast and urea on yield and quality of thompson seedless grape (Vitis Vinifera l.) grown in loamy sand calcareous soil [electronic resource].

Includes references.

Two field experiments were carried out during the seasons of 2003 and 2004 at EI-Bostan area, Nubaria region. The aim of the study was to investigate the effect of foliar application of yeast extract, urea at two rates (0.5 and 0.75 % urea) and their combinations on yield and quality characters of Thompson seedless grapes (Vitis vinifera L.). Foliar application by yeast extract or urea (0.5 %) significantly increased the yield, density of berries per bunch, bunch and berry dimensions, weights of bunch and berry, as well as TSS and TSS/acidity ratio, while the fruit acidity significantly decreased.

Summary in Arabic.

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