A- EFFECT OF CANE LENGTH ON BUD BEHAVIOR, YIELD, BUNCH CHARACTERISTICS, WOOD RIPENING AND CHEMICAL CONTENTS OF EARLY SUPERIOR GRAPEVINES. | ||||
| Journal of Plant Production | ||||
| Article 15, Volume 30, Issue 10, October 2005, Page 6123-6138 PDF (4.21 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jpp.2005.237533 | ||||
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| Authors | ||||
| Mervat S. Rizk-Alla,; H. EI-Zyat | ||||
| Hort. Res. Inst., Agric. Rec. Cent., Egypt. | ||||
| Abstract | ||||
| This investigation was carried out in a private vineyard located at Madenet EI Sad at, Menofya Governorate on five years old trees of Early Superior grapevines. The study was conducted for two successive seasons 2001 and 2002. Vines were trained according to cane system, with different number of canes (5, 6, 7, 9 canes/vine) and different number of buds (14, 12, 10, 8 buds/cane). Number of buds/vine being fixed at 70-72 buds, in addition to the renual spure buds per each level of cane length. The results showed that, the period of bud burst lasted about 3-4 weeks (from the mid of February till the first week of March). Regardless cane length treatments, the percentage of the bursted buds showed a gradual increase all along the period of bud burst activity. The percentage of buds burst increased with increasing cane length to 14 buds/cane, while the fruitful buds percantage and fertility coefficient were increased at cane length 12, 10 buds/cane. The treatment of 8 buds/cane followed by treatment 10 buds/cane showed a significant increase in shoot length, leaf number, leaf area and pruning wood weight. Vines with treatments (12 & 10 buds/cane) gave greater number of bunches and higher yield per vine than vines with longer and shorter canes. Vines, with cane length 8 buds/cane followed by treatment with 10 and 12 buds/cane gave the greatest bunch, rachis weight, number of berries/bunch, weight and size of berry. T.S.S and T.S.S/acid ratio were increased at the short cane length, while acidity was decreased. The process of wood maturity on the resulting shoots was obviously slowed by increasing cane length, wood ripening gradually advanced in all treatments till November. Increasing the cane length decreased total carbohydrates and total nitrogen of wood pruning. | ||||
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