EFFECT OF PRUNING SEVERITY ON THE GROWTH AND YIELD QUANTITY AND QUALITY  OF TWO GRAPE  CULTIVARS

A. Kadhum, Rajaa

	EFFECT OF PRUNING SEVERITY ON THE GROWTH AND YIELD QUANTITY AND QUALITY OF TWO GRAPE CULTIVARS
The Iraqi Journal of Agricultural Science
Article 1, Volume 40, Issue 4, 2009, Pages 1-8
Author
Rajaa A. Kadhum
Abstract
This experiment was conducted in the grape orchard of the Agricultural Research Station in the area of Fazan, Libya in 2002 and 2003, to this was investigate the effect of pruning severity on the growing and yield quantity and quality of the grape cultivar Cardinal and in 2003 for Sultanina cultivar.Grape vines were planted in 1991 and trained by bilateral cordon system. This experiment was carried out with a randomized complete block design using three pruning levels; 60 ,90 ,120 node/vine distributed as 4-7 nodes cane in Cardinal and 8-10 node/cane in Sultanina.The growth parameters including leaf area and number of berries per bunch, besides the percentage of shot berries,and quantitative parameters including yield, bunch and berry weight,and bunch length and diameter, and some qualitative parameters were studied. Results of the experiment showed that the highest leaf area obtained with 90 node/vine for both cultivars ,also the highest significant values of numbers of berries per bunch and lowest percentage of shot berries obtained with 90 node/vine for both cultivars. The yield was significantly affected by pruning levels and the highest yield per vine were obtained with 90 node /vine for both cultivars. The qualitative criteria were significantly affected by pruning levels, the highest significant values obtained with 60 and 90 node/vine for both cultivars Cardinal and Sultanina. In conclusion, the pruning severity 90 node / vine has an important effect in improving the growth and yield quantity and quality of Cardinal Sultanina cultivar.

Statistics Article View: 155 PDF Download: 131