Influence of plant growth regulators on yield and Economics of China aster var. Arka Archana

Abstract

A field experiment on “Influence of plant growth regulators on yield and economics of China aster var. Arka Archana” was undertaken at Floriculture Research Farm, ASPEE College of Horticulture and Forestry, Navsari Agricultural University, Navsari during the Rabi season of 2020-2021. The experiment comprised ten treatments viz., GA3 100 ppm, GA3 150 ppm, GA3 200 ppm, Salicylic acid 50 ppm, Salicylic acid 100 ppm, Salicylic acid 150 ppm, NAA 100 ppm, NAA 150 ppm and NAA 200 ppm along with no (water) spray. The experiment was laid out in randomized block design (RBD) with three replications in China aster var. ‘Arka Archana’. Plant growth regulators were applied as foliar spray at 30 and 45 days after transplanting. The findings show that numerous treatments had different impacts on yield and economics. Among different concentrations of plant growth regulators, 200 ppm GA3 was found numerically highest in the number of flowers per plant, yield of flowers per plot and hectare at 45 and 60 DAT. Moreover, the benefit cost ratio (BCR) was also recorded as maximum with the application of GA3 @ 200 ppm.