EFFECT OF SPRAYING LIME AND SOME FUNGICIDES ON VINE GROWTH AND CONTROL OF DEAD ARM DISEASE AND BUNCH ROT OF RUBY SEEDLESS GRAPEVINES | ||
| Journal of Plant Production | ||
| Article 27, Volume 32, Issue 4, April 2007, Pages 2929-2936 PDF (482.6 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/jpp.2007.207695 | ||
| Authors | ||
| A. A. Abd Elghany1; M. E. Abo-Rehab2 | ||
| 1Hort. Res. Institute, Agric. Res. Center, Giza, Egypt. | ||
| 2Patholoy Res. Institute, Agric. Res. Center, Giza, Egypt. | ||
| Abstract | ||
| A field trial was conducted in 2005, 2006 and extended to January 2007 on 12-years-old Ruby Seedless grapevines trained by quadric lateral cordon and spur pruned. Vines were sprayed with lime after two weeks of berry set, CaCl2 one week later, lime and CaCl2 with wettable sulfur at short intervals weekly from full bloom until the fourth week after berry set. Copper oxichloride was sprayed at the fourth week of berry set mixed with the dose of wettable sulfur of this week. One concentration (3 g/L) was used from each compound. All the experimental vines were sprayed with wettable sulfur at 15 days interval from bud burst as long as temperature was lower than 28 oC. Vine vigor expressed in terms of weight of pruning wood, dry weight and carbohydrate content of basal canes were improved in the second and third season of the study; carbohydrate content was improved in the second season compared to control as affected by experimental foliar spraying compounds. The best improvement occurred with spraying vines with lime (3 g/L), CaCl2 and wettable sulfur (3 g/L) at short interval weekly from full bloom until fourth week of berry set. Copper oxichloride (3 g/L) was applied once mixed with the dose of wettable sulfur in the fourth week of berry set. However, this treatment significantly reduced disease severity of both dead-arm and bunch rot disease. Also, this treatment reduced the number of both dead spurs of last season seasons compared with the first and second of winter pruning of the study. | ||
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