Effect of Spring and Summer Sprays of 2,4, 5-T and Ga on Fruit Set and Physical Characters of Some Sweet Orange Cultivars*

The growth regulator treatments 2, 4, 5-T 10 ppm and 15 ppm increased the fruit set over the control significantly. All the GA concentration increased the fruit set over the control significantly except GA at 10 ppm in Pineapple where its effect was not significant. The length of the fruit was significanily increased by 2, 4, 5-T 15 ppm and 25 ppm in Pineapple. In Valencia Late all the 2, 4, 5-T treatments increased the fruit length significantly. However, in Hamlin the effect was not significant in spring spray. GA at 50 ppm reduced the fruit length significantly over the control. Similar trend was obtained in respect of diameter except in Valencia Late none of the 2, 4, 5-T treatments increased the diameter significantly over the control.