EFFECT OF SUPPORTING SYSTEMS ON VINES GROWTH AND ROOT DISTRIBUTION OF FLAME SEEDLESS GRAPEVINES. | ||||
| Journal of Plant Production | ||||
| Article 13, Volume 3, Issue 2, February 2012, Page 349-365 PDF (653.57 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jpp.2012.84061 | ||||
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| Author | ||||
| M. M. Shoeib* | ||||
| Viticulture dept. Hort. Res. Instit. Agric. Res. Center, Giza, Egypt. | ||||
| Abstract | ||||
| Growth and root distribution of 10 years old Flame Seedless grapevines grown in a sandy soil under different supporting systems were studied during 2007 and 2008 seasons. At four vineyards, five feddan/each the objective was studying the effect of the geometrical shape of four supporting systems: Telephone (Double T), Y-shape, Gable and Baron shape on vines growth and roots distribution. Planting distance was 1.75 X 3.0 m between the vines and the rows for all types of supporting systems. Telephone and Y – shape vines were quadrilateral cordon trained, spure pruned and vines load was 56 buds/vine. While Gable and Baron shape vines load was 64 and 96 buds/vine and trained according to quadrilateral cordon and mixed pruning respectively. Study of the grapevines root system. The results revealed that Telephone (Double T) and Y shape enhanced budburst date in comparison with Baron and Gable shape, while the later two types of supporting systems improved budburst number and percentage per vine, fruit full shoots number/vine and fertility coefficient. Also these two types had the maximum total leaf area per vine, leaf area index, shoot length, pruning wood (kg/vine) and wood ripening coefficient significantly as compare with Telephone (Double T) and Y shape during seasons of study. Concerning physical and chemical properties of the yield: Data showed that Baron and Gable shape increased these parameters and Gable shape have the highest values in TSS% and the lowest values in total acidity percentage compared with other types of supporting systems. As for total carbohydrates canes content%, leaf area (cm2)/cluster and anthocyanin (mg) in berries skin/100 gm fresh weight, data showed that Baron shape had the highest significant values in this respect followed by Gable shape. Regarding leaf petiole N, P and K content (%) high significant values were found in the vines supported with Baron shape and the lowest values resulted from the vines trellised with Telephone (Double T) and Y-shape in the two seasons of the study. Grape vines roots systems: Data revealed that Baron and Gable shape increased total roots densities in horizontal and vertical direction and its diameters, also distance of 50 cm from vines trunk and depth of 60 cm from soil surface had the maximum values in total roots densities and its percentage, followed by upper soil layer (30 cm depth) and 25 cm distance. While minimized values resulted from deeper layer (90 cm depth) and third distance from the trunk (75 cm). Therefore Baron and Gable supporting systems seems to be better than Telephone (Double T) and Y-shape and preferable to maintain reasonable yield with good quality from Flame Seedless grapevines. | ||||
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