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EFFECT OF SULPHUR , PHOSPHORUS APPPLICATION AND GIBBERELLIC ACID SPRAY ON SOME VEGETATIVE GROWTH PARAMETERES OF DIXIRED PEACH TRANSPLANTS | ||
| journal of kerbala university | ||
| Article 1, Volume 7, Issue 3, 2011, Pages 89-99 PDF (0 K) | ||
| Abstract | ||
| Dixired peach transplants which were budded on peach seedling rootstock and planted on black polyethylene bags containing 9 Kg soil , fertilized with three levels of sulphur ( 0 , 250 and 500 mg. S Kg-1soil ) and phosphorus ( 0 , 15 and 30 mg P Kg-1 soil ) .The agriculture sulphur ( 95 % S ) and triple super phosphate ( 22 % P ) used as a sources for sulphur and phosphorus respectively , which were mixed with soil when the transplants planted in the bags at the 17th of febroury at both seasons . Transplants were sprayed with three levels of GA3 ( 0 , 15 and 30 mg. GA3 L-1 ) twice at both seasons , first spray was after 45 days from full buds burst , while the second was after one month from the first spray . Results indicated that application of sulphur , phosphorus and GA3 each alone and all interactions among them , significantly increased leaves chlorophyll and carbohydrate concentrations , transplantes leaf area , transplantes height and its main steam diameter at both seasons ( except the effect of GA3 on main stem diameter in the second season , the differences between the treatments was unsignificant ) . The treatment of 500 mg. S Kg-1 soil + 30 mg. P Kg-1 soil + 30 mg. GA3 L-1. was the best . The means of leaves chlorophyll , transplantes leaves area , carbohydrate , transplantes height and main steam diameter in this treatment was 13.68 mg . gr-1 fresh weight , 1220.3 cm2. transplant-1 , 12.21 % , 110.53 cm and 7.20 mm. in the first season , and 16.23 mg . gr-1 fresh weight, 1419.7 cm2. transplant-1 , 13.49 % , 106.00 cm and 7.07 mm. in the second season . | ||
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