Assessment the influence of Auxins on growth, yield and economics of cabbage (Brassica oleracea var. capitata L.) in Bihar

Abstract

An On Farm Trial was carried out at 8 farmers’ field of Madhepura district under supervision of KVK, Madhepura, BAU, Sabour (Bhagalpur) during Rabi-2019 to evaluate the effect of different auxins on growth, yield and economics of cabbage cultivar cv. Golden Acre. Three treatments viz. T1- Farmers practice (no application of PGR), T2- Application of IAA @ 150 ppm at 4 leaf stage and T3- Application of IBA @ 150 ppm at 4 leaf stage were arranged in Randomized Block Design with eight replications. Cabbage var. Golden Acre was used in the experimentation. The experimental result showed that the treatment T3 (Application of IBA @ 150 ppm) displayed better response to almost all the growth and yield attributes except plant height and head maturity, which showed better response under the application of IAA @150ppm (T2). The maximum plant growth (12 and 16.40cm) at 30 DAS and 60 DAS, respectively was recorded by the application of T2 (Application of IAA @ 150 ppm), which was statistically higher than T1 (farmers practice) and T3. The maximum yield of cabbage (315 q/ha), net profit and B:C ratio (1: 3.13) was observed under the treatment T3 (Application of IBA @150 ppm) however, the minimum values were noted in treatment without application of PGRs (T1). The study revealed that the application of IBA @150 at 4 leaf stage is more effective than IAA @ 150 ppm and the farmers practice (no use of PGR) in respect to higher yield and net profit per rupee investment.