EFFECT OF PLANTING GEOMETRY AND NUTRITION ON PLANT GROWTH, SEED YIELD AND QUALITY OF OKRA (Abelmoschus esculentus (L.) Moench)
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Date
2018-08-01
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University of Agricultural Sciences, Bangalore
Abstract
The field and laboratory experiments were conducted to study the effect of planting geometry and nutrition on plant growth, seed yield and quality of okra at NSP, UAS, Bangalore. The experiment was laid out in FRCBD design with 12 treatment combinations replicated thrice which includes three different planting geometry S0 (60 × 45 cm), S1 (60 × 30 cm) and S2 (60 × 60 cm), four levels of nutrients N0 (100 % RDF), N1 (125 % RDF), N2 (150 % RDF) and N3 (200 % RDF) (RDF : 156.25: 93.75: 78.75 kg
NPK ha-1). Results revealed that S2 and N1 are superior in plant growth and seed yield attributes viz., plant height (171.79 cm), number of leaves (28.23), number of branches (3.90), internodal length (10.80 cm) and chlorophyll content (60.83 SPAD unit), maximum seed yield plant-1 (69.06 g), seed yield plot-1 (1115.45 g) and seed yield ha-1 (19.36 q) registered and highest seed quality parameters documented under S2N1 such as germination (89.50 %), mean seedling length (35.65 cm), mean seedling dry weight
(57.22 mg), seedling vigour index-I (3190) and II (5121) and 100-seed weight (8.60 g). Seed quality was evaluated based on fruit position with FCRD design replicated thrice consisting of three fruit position top (P1), middle (P2) and bottom (P3). It was found that bottom fruits (P3) produced highest quality seeds with maximum germination (88.61 %), mean seedling length (32.77 cm), mean seedling dry weight (50.32 g), seedling vigour index-I (2927) and II (4474), 100-seed weight (7.53 g) and total dehydrogenase activity (2.80), while electrical conductivity (674 μScm-1) of seed leachates recorded minimum in seeds from bottom fruits of okra.