Ismaeil,, F., Wahdan, M., EI-Sheikh, A. (2003). RESPONSE OF THOMPSON SEEDLESS AND ROUMI RED GRAPE CULTIVARS TO FOLIAR SPRAYS WITH YEAST EXTRACT AND GA3. Journal of Plant Production, 28(8), 6321-6334. doi: 10.21608/jpp.2003.244804
Faten H.M. Ismaeil,; M. T. Wahdan; A. F. EI-Sheikh. "RESPONSE OF THOMPSON SEEDLESS AND ROUMI RED GRAPE CULTIVARS TO FOLIAR SPRAYS WITH YEAST EXTRACT AND GA3". Journal of Plant Production, 28, 8, 2003, 6321-6334. doi: 10.21608/jpp.2003.244804
Ismaeil,, F., Wahdan, M., EI-Sheikh, A. (2003). 'RESPONSE OF THOMPSON SEEDLESS AND ROUMI RED GRAPE CULTIVARS TO FOLIAR SPRAYS WITH YEAST EXTRACT AND GA3', Journal of Plant Production, 28(8), pp. 6321-6334. doi: 10.21608/jpp.2003.244804
Ismaeil,, F., Wahdan, M., EI-Sheikh, A. RESPONSE OF THOMPSON SEEDLESS AND ROUMI RED GRAPE CULTIVARS TO FOLIAR SPRAYS WITH YEAST EXTRACT AND GA3. Journal of Plant Production, 2003; 28(8): 6321-6334. doi: 10.21608/jpp.2003.244804
RESPONSE OF THOMPSON SEEDLESS AND ROUMI RED GRAPE CULTIVARS TO FOLIAR SPRAYS WITH YEAST EXTRACT AND GA3
Yeast extract (100 and 200 mill) and GA" (20 and 40 ppm) were fol'ar sprayed on Thompson Seedless and Roumi Red grape cultiva-s The treatments were done before lIowering (2nOweek of April) and at full bloom (1" week of May). Fruit set (%) and number or c1usterslvine of both cultivars were increased significantly. In addiUon. yield was increased as a result of cluster weight, length and berries weig t. Number of berries/cluster also improved significantly by yeast extract + GA" and yeast extrac; treatment alone for "Thompson Seedless" and "Roumi Red'. respectively. I
All treatments increased jdce ~ '''~ntage of "Thompson Seedless' bernes, however, juice content of 'Roum; Red'. :;(.;:~cle solids contenl (SSe), Sse/acid ratio and total sugars were increased while acidily decreased significantly for both cultivafs. The combination of yeast extract "'; 1 00 mill and GA" at 40 ppm IS recommended or improving yield and fruit quality of Thompson Seedless and Roumi Red grape cullivars.
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