This investigation was conducted for two successive seasons (2006& 2007) to study the effect of training system and fruiting unit length on bud behaviour, growth and productivity of Flame Seedless grapevines. The chosen vines were ten-year-old, grown in a clay loamy soil and irrigated by the drip irrigation system. The vineyard was located at Meniet Samannoud, Dakahlia governorate. Vines were spaced at 2.5 X 3 meters apart, pruned during the second week of February with a load of (40-42 buds/vine) and trellised according to the telephone system. Seventy two uniform vines were chosen. Each four vines acted as a replicate and each three replicates were treated by one of the following treatments: Two training systems were evaluated; the first was cordon training system with three levels of spur length: two, three or four buds per spur, while the second was cane training system with three levels of cane length: six, eight or ten buds per cane.The results showed that cordon training system gave the best results as compared to cane training system. The spur pruning (2-3 buds/spur) resulted in the highest percentages of bud burst and fruitful buds and coefficient of bud fertility as compared to the cane pruning (6 buds/cane) which recorded the lowest values. In addition, the cordon training system with fruiting unit lengths of 2-3 buds/spur gave the best yield/vine and its components as well as the best physical properties of bunches, improved the physical and chemical characteristics of berries and ensured the best vegetative growth parameters, dynamics of wood ripening, weight of prunings/vine and size of old wood. Total chlorophyll of the leaves and total carbohydrates of the canes were also increased as compared to the cane training system with fruiting unit length of ten buds/cane which gave the lowest values of these parameters.The economical study indicated that cordon training system with spur pruning for Flame Seedless grapevines gave the highest net income as compared to cane training system with cane pruning.
This study was carried out for two successive seasons (2007 & 2008) in a private vineyards located at El-Khatatba, Menoufiya governorate; to study on the possibility of improving vegetative growth, yield and bunch quality through the application of some summer pruning practices on Black Monukka and Red Globe grapevines. The chosen vines were ten-year-old, grown in a sandy loam soil, spaced at 2 X 3 meters apart, irrigated by the drip irrigation system, canepruned and trellised by the double "Y" shape system. Eight treatments were applied as follows; pinching the main shoots before the beginning of bloom and removing laterals, pinching the main shoots before the beginning of bloom and topping laterals to 4-5 leaves, pinching the main shoots before the beginning of bloom and maintaining laterals, defoliation (removal of leaves beneath the clusters at veraison stage), pinching the main shoots and removing laterals + defoliation, pinching the main shoots and topping laterals to 4-5 leaves + defoliation as well as pinching the main shoots and maintaining laterals + defoliation, in addition to control (untreated vines). The results showed that all treatments, except for defoliation treatment was effective in increasing number of bunches/vine, average bunch weight and yield. All pinching treatments alone or combined with defoliation treatment improved the physical characteristics of bunches, physical and chemical properties of berries, morphological characteristics of vegetative growth, leaf content of total chlorophyll and cane content of total carbohydrates as compared with control. Vines treated with pinching the main shoots, maintaining laterals accompanied with defoliation resulted in a great stimulation of all the studied parameters. On the other hand, control was found to record the minimum values of these characters. The economical study indicated that vines treated with pinching the main shoots, maintaining laterals accompanied with defoliation of Black Monukka and Red Globe grapevines gave the highest net income as compared to the control.
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