Effect of Different Plastic Sheet Coverings and Pruning Time on Yield and Yield Components of Table Grape "cv. Superior" | ||||
| Hortscience Journal of Suez Canal University | ||||
| Article 1, Volume 3, Issue 1, January 2015, Page 1-14 PDF (1.35 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/hjsc.2015.6474 | ||||
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| Authors | ||||
| Aly A; Thanaa Ezz.; Rehab Awad; A. Abou-Elmaaty | ||||
| Fac. Agric., Saba Basha, Plant Production Department, Alex. Univ. | ||||
| Abstract | ||||
| This study was carried out during two successive seasons in 2007 and 2008 on five years old "cv. Superior" grape cultivar in a private vineyard at El-Noubarya city, Behaira Governorate, Egypt. The vines were grown in sandy soil with spacing of 2m within rows and 3 m between rows under drip irrigation system and trained to cane pruning under baron trellis system. The main factor was the three pruning times [(1st December (P1), 15th December (P15) and 30th December (P30)] carried during dormant season to ten canes per vine with 12 nodes per cane. Four renewal spurs (2 nodes) were tretained per vine, while the sub main factor was four mulching treatments with sheet cover sleeves air white plastic (WSCT), air yellow plastic (YSCT), soil white plastic (WSCS) and soil yellow plastic (YSCS). The control was the rest of the field (no mulch with pruning 20th December).The (P30YSCS) and (P30WSCS) treatments gave the highest yield (kg/vine) in the first and second seasons compared with control treatment. Also the treatments (P1YSCS), (P1WSCS), (P1YSCT) and (P1WSCT) gave the lowest value of yield as compared with control. All treatments significantly decreased number of berries/cluster in both seasons, except the treatments (P1YSCS), (P1WSCS), (P15YSCS), (P15WSCS) and the control. The increasing of cluster length and decreasing of berries number in the treatments (P1YSCT), (P1WSCT), (P15YSCT), (P15WSCT), (P30YSCT) and (P30WSCT) caused a significant reduction in cluster compactness as compared with control treatment. Furthermore, increasing of cluster compactness significantly under the treatments (P1YSCS), (P1WSCS), (P15YSCS), (P15WSCS), (P30YSCS), (P30WSCS) and the control caused by decreasing cluster length and increasing berries number compared with all treatments. Accumulation of high temperatures by (P1YSCT), (P1WSCT), (P15YSCT), (P15WSCT), (P30YSCT) and (P30WSCT) increased total sugars in both seasons compared with control treatment, but the treatments (P1YSCS), (P1WSCS), (P15YSCS), (P15WSCS), (P30YSCS) and (P30WSCS) did not affect total sugars compared with control treatment. | ||||
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