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Subject: Horticulture × Author: Bhuyan, Violeena × End date: 2019 × Start date: 2017 × Thesis Type: M.Sc ×
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    ThesisItemOpen Access
    PERFORMANCE OF DIFFERENT TYPES OF POINTED GOURD (Trichosanthes dioica Roxb.) GROWN UNDER DIFFERENT TRAINING SYSTEMS IN ASSAM
    (AAU, Jorhat, 2018-07) Bhuyan, Violeena; Gautam, B. P.
    The experiment entitled “Performance of different types of pointed gourd (Trichosanthes dioica Roxb.) grown under different training systems in Assam” was carried out at the Instructional cum Research Farm, B N College of Agriculture, AAU, Biswanath Chariali during 2016-2018 with three objectives a) to find out the performance of different types of pointed gourd under different training systems, b) to find out the suitable training systems for different types of pointed gourd and c) to study the incidence of diseases and pests in different training systems. The design of the experiment was Factorial Randomized Block Design with three replications. The two factors studied were: Factor A: different training systems and Factor B: types of pointed gourd. There were two training systems viz., Ground trailing system (S1) and Bower system of training (S2) and five different types of pointed gourd viz., Type 1(T1), Type 2(T2), Type 3(T3), Type 4(T4) and Type 5(T5). Among the phenological, physiological and yield attributing characters; the duration of fruiting, RLWC and fruit length showed significant difference between the two training systems. There was significant difference among the different types of pointed gourd with respect to various morpho-phenological, physiological, yield attributes and quality parameters. Among the types, T3 produced the maximum vine length (5.18m), internodal length (13.39cm), number of primary branches (7.03), leaf area (67.05cm2), relative leaf water content (92.39%), chlorophyll content index (26.04), number of fruits per vine (242.03), fruit length (10.06cm), volume of fruit (44.29cc), fresh weight of fruit (32.75g), fruit yield per vine (7.74kg), yield (19.34t/ha) and ascorbic acid content (18.67mg/100g). The same type recorded the higher shelf life of the fruits both under normal room temperature (8.42days) and in refrigerated condition (18.75days). Between the two training systems, Type 4 (T4) produced maximum number of fruits per vine (214.33), volume of fruit (38.5cc), fresh weight (27.73g), fruit yield per vine (5.94kg) and yield per hectare (14.86t/ha) in ground trailing system. Whereas, in S2, i.e., bower system of training, T3 produced the maximum number of fruits per vine (279.67), volume of fruit (45.17cc), fresh weight (34.6g), fruit yield per vine (9.16kg) and total yield (22.89t/ha). Downy mildew infection was observed only in the ground trailing system, however, under the bower system of training, stem gummation was observed. Among all the treatment combinations, S2T3 (Type 3 + bower system) recorded significantly the highest fruit yield per plant (9.16kg), total yield (22.89t/ha) with a benefit cost ratio of 2.29 followed by S1T3 benefit cost ratio of 1.95 while, the lowest was recorded in S2T1 (Type 1 + bower system). The study, therefore, suggests that Type 3 with significantly higher yield, grown in both bower system and in ground trailing may be recommended to the pointed gourd growers of Assam for maximizing its production and improve their socio-economic status.