Effects of gibberellic acid on growth, yield and fruit quality of fig (Ficus carica L.)

A.R. Kurubar, T.B. Allolli, M.K. Naik, S.G. Angadi
The fig cultivation is gaining importance due to its drought tolerant features and easy management, the crop finds itself more acceptable in dry lands either as monocrop or in mixed cropping with other fruit trees. Its inclusion in agriculture land use system helps to achieve crop diversification. The information on use of growth regulators in this crop are limited, hence this experiment was conducted on red sandy soils of fig orchard for two years in randomized block design to know the response of fig cultivar 'Poona' to different concentrations and intervals of Gibberellic acid (GA), imposed through 10 treatments in three replications. Fig plants sprayed with Gibberellic acid at 60 ppm with three sprays at an intervals of 15 days starting from bud initiation, resulted in significant increase in shoot length (2.95 cm), number of functional leaves (616.23) and fruit length (5.72 cm) but reduced the fruit diameter and weight. However, fruits yield (13.38 kg plant-1) and (8.9 t ha-1) was non-significant among the treatments but numerical higher yield value was recorded when plants sprayed with gibberellic acid at 40 ppm at bud initiation stage and 15 days after bud imitation. The maturity period was advanced with increase in its concentration and number of spray. Among the treatments superiority in fruit quality was found in control. However, the improvement of the quality parameters of fruit such as all sugars and titerable acidity were found to increase with increased concentration of spray with increased intervals.
Kurubar, A.R., Allolli, T.B., Naik, M.K. and Angadi, S.G. 2017. Effects of gibberellic acid on growth, yield and fruit quality of fig (Ficus carica L.). Acta Hort. (ISHS) 1173:183-188
growth substance, fruit size, total soluble solids, total sugars

Acta Horticulturae