Assessment the efficacy of plant growth regulators on growth and yield of Chilli (Capsicum annuum L.) in Koshi region of Bihar-an on farm Trial

Abstract

The present on farm trial was carried out at 8 farmers field of Madhepura district under supervision of KVK, Madhepura, BAU, Sabour (Bhagalpur) during kharif 2019 to assess the effect of plant growth regulators (PGRs) on promoting growth and yield of Jwala, a local cultivar of chilli. NAA @ 40 ppm and triacontanol @5 ppm were sprayed at 46, 82 and 157 DAT. Result indicated that the use of Triacontanol @ 5 ppm at all the three stages showed for the highest plant height (94.52cm), fruit setting percentage (55%), number of fruits per plant, fruit weight, fruit length, number of seeds per fruit, seed weight per fruit and fruit yield (86.56q/ha), whereas, the yield and yield attributing traits were less under the farmer’s practice, where there was no use of PGRs. The spray of Triacontanol @ 5 ppm at all the three stages also gave the highest net profit and B:C ratio (1: 3.09). The study revealed that the foliar spray of Triacontanol @ 5 ppm is more effective than NAA @ 40 ppm and the farmers practice (no use of PGR)