Effect of Gibberellic Acid, 2,4-Dichlorophenoxyacetic Acid and 2,4,5-Trichlorophenoxyacetic Acid on Fruit set, Drop, Size and Total Yield in Sweet Lime (Citrus Limettioides Tanaka)
(1) GA (10 ppm) increased the fruit set over other treatments including control. 2,4-D (10 and 15 ppm) and 2,4,5-T (5,10 and 15 ppm) also improved the fruit set over control, but not so significantly as GA (10 ppm).
(2) GA (10 ppm) have reduced the fruit drop significantly compared to other treatments. 2,4-D (10 and 20 ppm) and 2,4,5-T (5 and 15 ppm) also prevented fruit drop but to a lesser extent than GA (10 ppm).
(3) The size of fruits was not greatly affected by plant regulator sprays.
(4) The number of fruits per tree increased as a result of GA (10 ppm) sprays to an extent of 111.11 per cent over control. Slight increase in number of fruits was noticed in 2,4-D (15 ppm) and 2,4,5-T (15 ppm) treatments.
(5) 2,4-D sprays resulted into formative effects on leaves. Such abnormalities were not recorded in other treatments.