Omran,, Y., EI - Morsy, F., EI- Mogy, M. (2005). EFFECTS OF NITROGEN FERTILIZATION AND HAND THINNING ON BERRIES SET AND QUALITY OF "PERLEITE SEEDLESS" GRAPES.. Journal of Plant Production, 30(7), 4043-4054. doi: 10.21608/jpp.2005.237446
Y. A. M. M. Omran,; F. M. EI - Morsy; M. M. EI- Mogy. "EFFECTS OF NITROGEN FERTILIZATION AND HAND THINNING ON BERRIES SET AND QUALITY OF "PERLEITE SEEDLESS" GRAPES.". Journal of Plant Production, 30, 7, 2005, 4043-4054. doi: 10.21608/jpp.2005.237446
Omran,, Y., EI - Morsy, F., EI- Mogy, M. (2005). 'EFFECTS OF NITROGEN FERTILIZATION AND HAND THINNING ON BERRIES SET AND QUALITY OF "PERLEITE SEEDLESS" GRAPES.', Journal of Plant Production, 30(7), pp. 4043-4054. doi: 10.21608/jpp.2005.237446
Omran,, Y., EI - Morsy, F., EI- Mogy, M. EFFECTS OF NITROGEN FERTILIZATION AND HAND THINNING ON BERRIES SET AND QUALITY OF "PERLEITE SEEDLESS" GRAPES.. Journal of Plant Production, 2005; 30(7): 4043-4054. doi: 10.21608/jpp.2005.237446
EFFECTS OF NITROGEN FERTILIZATION AND HAND THINNING ON BERRIES SET AND QUALITY OF "PERLEITE SEEDLESS" GRAPES.
Viticulture Department. Horticulture Research Institute, Agriculture Research Center, Giza, Egypt
Abstract
The effect of nitrogenous fertilization and hand thinning by brush use on thinning and clusters quality of Perlette Seedless were studied during 2003 and 2004 seasons. The fertilizer treatments were foliar application with urea (0.5 - 3 %) at full bloom time. soil fertilization with ammonium sulphate (20.5%). The data revealed that vegetative growth increased after nitrogen application. Whereas, foliar application with urea at full bloom and 50- 70 g of soil nitrogen until full bloom time were very effective in reduction flower set percentage. Furthermore, Brush use at full bloom was the optimal treatment for reducing flower set. In this respect, most treatments lead no effect on nitrogen content of leaves except treatment with 70 N units until full bloom and brush use treatment. Only vines received 70 g of soil nitrogen until full bloom time present significant effect on length and diameter of clusters. Coefficient of cluster compactness was significant affected by addition 30- 40 g of soil nitrogen until full bloom time. Foliar application with urea and 50-50 g of nitrogen significant increase berry weight, brush use gave the highest value. 0 - 3 % urea at full-bloom and 5~70 9 soil nitrogen until full bloom time or brush use significantly decreased cluster weight and yield. Soil fertilizer at 50 9 N per vine had a major significant effect on yield, yield components and fruit Quality compared with the control and other treatments
View on SCiNiTO
Top