Response of foliar application of ga3 and different plant ages for seed production in carrot

Abstract

Abstract : A field study was conducted to investigate the effect of foliar application of GA3 at different plant ages on seed production in carrot. Three different plant ages (20,30 and 40 days) and four different GA3 concentrations (0, 100, 200, 300 ppm) were considered in the study. The variety Bejo Shetal was used for the study. Plant age of 30 days was found to produce highest seed yield (1152 kg/ha) followed by 1051 kg/ha in the plots of 40 days plant age while the lowest seed yield per hectare (916.6 kg/ha) was harvested from the plots of 20 days plant age. On the other hand, the highest seed yield per hectare (1849 kg) was obtained in the plot of foliar application of 200 ppm GA3, followed by (1267 kg) in 300 ppm GA3 applied plots. The lowest seed yield per hectare (106.2 kg) was obtained on the control plots (no application of GA3). The highest yield was obtained (2120 kg/ha) from the plots having combined effect of 30 days plant age with 200 ppm of GA3 application. It was statistically similar to those plots (1924 kg/ha) of 40 days plant age combined with 200 ppm GA3 application. The lowest seed yield (102.1 kg/ha) was harvested from the plots of 20 days plant age without GA3 treatment. The present results revealed that foliar application of GA3 at 200 ppm on 30 days plant age produced the maximum seed yield (2.12 t/ha) in using variety Bejo Shetal.