PARTIAL LEAF REMOVAL AND ITS INFLUENCE ON MICROCLIMATE AND CHARACTRtSTICS OF SUPERIOR SEEDLESS GRAPES | ||
| Journal of Plant Production | ||
| Article 16, Volume 30, Issue 7, July 2005, Pages 4073-4083 PDF (1.49 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/jpp.2005.237449 | ||
| Author | ||
| A. H. Omar, | ||
| Viticulture Department, Horticultural Research Institute, Agricultural Research Center, GIza, Egypt | ||
| Abstract | ||
| Superior Seedless grapevines ,were subjected to early leaf removal after fruit set (6-7 mm berry diameter) or late leaf removal at veraison, Treatments comprised control, removal of three leaves before cluster, removal of six leaves (three before cluster + three after cluster) and of nine leaves (three before cluster + six after cluster). Clusters from positions directly exposed to sunlight were collected. The results indicated that leaf removal increased canopy temperature, light intensity and lowered relative humidity. This was proportionate to the number of removed leaves. Early treatments. produced light clusters with lower berry weight and size. Consequently, yield/vine was decreased. TSS and TSS/acid ratio were decreased while acidity was increased. Late treatments significantly increased cluster weight, berry weight, size and yieldlvine. TSS and TSS/acid were increased while acidity was decreased. Generally, leaf removal decreased leaf area and chlorophyll content. The removal of six leaves (three before cluster + three after cluster) at veraison stage was suitable for Superior Seedless cultivar. | ||
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