Vol. 12, Issue 7 (2023)

Author(s):
Chaudhary Bharat D, Masaye SS and VM Chaudhari

Abstract:
The field experiment on “Influence of different concentration of ethrel and NAA on yield and flowering parameters of Cucumber cv. Pusa Sanyog” was carried out at Polytechnic in Horticulture, ACH, NAU, Paria, Valsad, Gujarat (India) during summer season, 2019. The field investigation was laid out in Randomized Block Design (RBD) with three replications, which include seven Treatments namely, T₁: Ethrel @ 50 ppm, T₂: Ethrel @ 100 ppm, T₃: Ethrel @ 150 ppm, T₄: NAA @ 50 ppm, T₅: NAA @ 100 ppm, T₆: NAA @ 150 ppm and T₇: Control (No spray) to assess the response of various plant growth regulators on fruiting behaviour and yield of cucumber cv. Pusa Sanyog. The study revealed that an application of ethrel 150 ppm was found to be the most effective for maximum female flowers (29.58) per vine, induce female flower at lower node (3.67), lowering the male:female sex ratio (2.50) with increasing the numbers of fruits per vine (11.97), yield per plot (23.08 kg) and per hectare (35.62 t). All plant growth regulators concentrations failed to exhibit any noticeable effect on the duration of fruiting, fruit length and fruit weight. However, maximum duration of fruiting (49.97 days) and fruit weight (164.22 g) were recorded in treatment T₃ (ethrel @ 150 ppm), while maximum fruit length (14.70 cm) recorded in T₄ (NAA @ 50 ppm). Fruit diameter significantly influenced by all plant growth regulators concentrations and maximum fruit diameter (4.59 cm) recorded in T₃ (ethrel @ 150 ppm). From the results of the investigation, it is inferred that foliar spray of ethrel @ 150 ppm at two and four true leaf stages were the most effective for lowering M:F sex ratio (2.50) and higher yield (35.62 t ha^-1in cucumber cv. Pusa Sanyog under South Gujarat conditions.