Effect of spray treatment of plant growth substances at different stages on growth and yield of sweet pepper (Capsicum annuum L.) cv. Indra under green house 

Abstract

Study of different spray treatment of plant growth substances on sweet pepper was carried out under green house condition. The results revealed that among different spray treatment of plant growth substances, the maximum height of plant (30.15 cm) at 30 days after transplanting was found significant with spray of GA₃ 50 ppm (P₃). The minimum days taken for edible maturity was also superior with GA₃ 50 ppm. Whereas, the maximum number of branches (5.52) and minimum days taken for initiation of flower (48.50 days) was recorded with ethrel 100 ppm (P₇) treatment. The maximum fruit set (70.78 %) was recorded with spray of GA₃ 25 ppm (P₂). Regarding yield parameter, spray treatment of GA₃ 50 ppm (P₃) was superior with respect to average weight of fruit (96.58 g), yield/plant (1.84 kg) and yield/ha (244.65 q/ha). Among two stages of spray, S₁ (Spray at 20 days after transplanting) was recorded the maximum girth of stem at 30 days after transplanting (0.47 cm). Whereas, S₁ (Spray at 20 days after sowing) was recorded initiation of first flower (49.96 days). No any beneficial effect was recorded on yield parameters.