EFFECT OF PRUNING SEVERITY ON BUD BEHAVIOUR, VEGETATIVE GROWTH, YIELD AND SOME BUNCH CHARACTERISTICS OF SUPERIOR SEEDLESS GRAPE | ||||
| Journal of Plant Production | ||||
| Article 9, Volume 31, Issue 9, September 2006, Page 5845-5858 PDF (190.57 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jpp.2006.236160 | ||||
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| Authors | ||||
| N. R.f. Samra,1; M. I. EI-Kady1; M. H. Rizk2; A. S. Soliman1 | ||||
| 1Pomology Dep. . Fac. of Agirc. , Mansoura Univ. | ||||
| 2Hort. Res. Int. l.Agric. Res. Cent. Egypt. | ||||
| Abstract | ||||
| This investigation was conducted during the seasons of 2002 and 2003 in a private vineyard of Superior seedless grape at EL-Khatatba district. EL-Monofia governorate. The vines were grown in a sandy soil under drip irrigation system. The vines were pruned to 6 or B canes with 10 or 12 or 14eyes per each cane. The results showed that the percentage of bud burst was increased by leaving 6 canes with 12 or 14 eyes. Leaving 8 canes with 14 eyes per each cane gave a lower value than leaving both 10 or 12 eyes under the same number of canes. Pruning Superior seedless grape by leaving 6 canes with 10 . 12 and 14 eyes increased the values of bud fertility than leaving the same number of eyes on 8 caneslvine. Vines pruned to B canesivine with 10.12 or 14 eyes produced the highest values of number of clusters, yield per vines. per feddan. berry firmness and leaf area in comparison with leaving 6 canes under the same number of eyes Whereas, leaving 6 canes with 10 eyes per cane gave the highest values of berry weight .diameter and berry adherence strength during the two seasons Percentage of soluble solids content in berry juice was higher when vines were pruned to 0 canes than leaving 8 canes with 10, 12 or 14 eyesfcane. Yet. the other pruning levels resulted in an unpronounced effect in this respect. The percent of nitrogen and potassium was increased by increasing the number of eyeslcane during the two seasons of the study. This percent was decreased by increasing bud load/vine from 72 (6 canes x 12 eyes) to 96 (B canes x 12 eyes) per vine. No obvious effect was observed concerning the effect of pruning severity on leaf P content during the two seasons of study . | ||||
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