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Abd El-Wahab,, M., Shaker, G., Sabry, G. (2006). EFFECT OF CONCENTRATION AND APPLICATION DATE OF HYDROGEN CYANAMIDE (DORMEX) ON BUD BEHAVIOUR, GROWTH AND PRODUCTIVITY OF SUPERIOR GRAPEVINES. Journal of Plant Production, 31(10), 6607-6624. doi: 10.21608/jpp.2006.236344
M. A. Abd El-Wahab,; Ghada Sh. Shaker; Gehan H. Sabry. "EFFECT OF CONCENTRATION AND APPLICATION DATE OF HYDROGEN CYANAMIDE (DORMEX) ON BUD BEHAVIOUR, GROWTH AND PRODUCTIVITY OF SUPERIOR GRAPEVINES". Journal of Plant Production, 31, 10, 2006, 6607-6624. doi: 10.21608/jpp.2006.236344
Abd El-Wahab,, M., Shaker, G., Sabry, G. (2006). 'EFFECT OF CONCENTRATION AND APPLICATION DATE OF HYDROGEN CYANAMIDE (DORMEX) ON BUD BEHAVIOUR, GROWTH AND PRODUCTIVITY OF SUPERIOR GRAPEVINES', Journal of Plant Production, 31(10), pp. 6607-6624. doi: 10.21608/jpp.2006.236344
Abd El-Wahab,, M., Shaker, G., Sabry, G. EFFECT OF CONCENTRATION AND APPLICATION DATE OF HYDROGEN CYANAMIDE (DORMEX) ON BUD BEHAVIOUR, GROWTH AND PRODUCTIVITY OF SUPERIOR GRAPEVINES. Journal of Plant Production, 2006; 31(10): 6607-6624. doi: 10.21608/jpp.2006.236344

EFFECT OF CONCENTRATION AND APPLICATION DATE OF HYDROGEN CYANAMIDE (DORMEX) ON BUD BEHAVIOUR, GROWTH AND PRODUCTIVITY OF SUPERIOR GRAPEVINES

Article 14, Volume 31, Issue 10, October 2006, Page 6607-6624  XML PDF (222.02 K)
Document Type: Original Article
DOI: 10.21608/jpp.2006.236344
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Authors
M. A. Abd El-Wahab,; Ghada Sh. Shaker; Gehan H. Sabry
Viticulture Dept... Hort. Res. Instit... Agric. Res. Center. Giza. Egypt
Abstract
This study was carried out to investigate the effect of Dormex sprayed at
different concentrations and dates on bud behaviour, vegetative growth and yield of
Superior grapevines. Three concentrations of Dormex were weekly sprayed: (0, 3 or
5%) at six dates: December 15‘“, December 22'“, December 29'“, January 5'“. January
12mand January 19'".
it was evident from the results of the investigation that the best effective
concentration of Dormex was 5%. The early Dormex application date (December 15"1
or December 22") gave too early bud burst with irregular and low percentage of bud
break and conse uently the yield was very low. Moreover, the late Dormex application
date (January 12 or January 19‘") greatly increased percentage of bud burst and bud
fertility coefficient as a result of which average number of bunches and yield per vine
were obviously increased. .
The medium Dormex application date (December 29‘“ or January 5"”) was
recommended to achieve an early. uniform and high percentage of bud burst. in
addition to, realizing reliable vegetative growth, and good yield with high bunch
quality.
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