tailieunhanh - Efficacy of plant growth regulators on growth and flowering of cucumber (cucumis sativus l.) cv. malini under shade net conditions

An investigation was conducted to study the effect of different plant growth regulators on growth and flowering of cucumber cv. Malini under shade net conditions. The experiment was carried out with 10 treatments GA3 at 75, 150 and 250 ppm, Ethrel at 100, 200 and 300 ppm, Salicylic acid at 75, 150 and 250 ppm and control (water spray) in three replications. Among all, GA3 at 75 ppm recorded with maximum vine length ( cm), number of number of leaves (), number of nodes on main stem (), length of primary branches ( cm) and leaf area ( cm²), whereas, maximum number of primary branches() was recorded in ethrel 300 ppm. Further, maximum internodal distance ( cm) was recorded with GA3 at 250 ppm. With respect to phenological parameters, ethrel at 300 ppm exhibited the best results for the minimum number of days taken for first female flower appearance ( days), least node number of first female flower appearance () and lowest male to female sex ratio () as compared to other treatments, whereas treatment GA3 at 150 ppm recorded minimum number of days taken to initiation of flowering ( days), minimum days taken for 50 per cent flowering ( days) and time taken for first harvesting ( days) over other treatments and finally yield ( t/ha) was recorded highest in GA3 75 ppm compared to other treatments. | Efficacy of plant growth regulators on growth and flowering of cucumber (cucumis sativus l.) cv. malini under shade net conditions

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