كليدواژه :
انگور , رقم شيرازي , هرس بلند , هرس شديد و هرس مختلط
چكيده لاتين :
Suitable pruning method for grape cv. Shirazi and its response to two levels of pruning severity and bud number per bearing unit (3, 6, and 9 buds) was investigated in three years-using a factorial experiment in randomized complete block design. Analysis of variance showed that effect of pruning severity on yield, bunch weight and the number of bunch/vine was not significant, but its effect on acid content, pH, TSS%, bud productivity, berry weight and the number of berry/bunch was significant. Effect of buds number per cane on yield, bunch weight, the number of bunch/vine, acid content, pH, TSS%, bud productivity and berry weight was significant, but its effect on the number of berry/bunch was not significant. Effect of Pruning severity x bud number per bearing unit on yield, bunch weight, the number of bunch/vine, acid content and pH was significant, but its effect on TSS%, bud productivity, berry weight and the number of berry/bunch was not significant. It is concluded that cane pruning with at least 9 buds/cane and a mixed pruning method with a 6 bud cane and a two bud-spur as renewal per bearing unit is recommended to trellis and traditional training systems, respectively.
