Riasat S, Noor A, Majeed Y, Amjad A, Abbasi KY and Ziaf K, 2022. Fertilizer source, dose and planting geometry effects on okra seed yield and quality. Agrobiological Records 8: 35-40. https://doi.org/10.47278/journal.abr/2022.007

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Ladyfinger, also known as okra or bhindi, is a vital summer seasonal vegetable, member of the Malvaceae family. Several aspects disturb its seed production, including insufficient nutrients, which reduces the yield and quality of the seed crop. A research trial was completed at the Institute of Horticultural Sciences, University of Agriculture, Faisalabad. Various fertilizer doses (FD1=N30:P45:S02kg/acre using DAP, urea and sulfur, FD2=N30:P30kg/acre using nitrophos and FD3=N60:P60kg/acre using nitrophos) and planting geometry (plants on one side of the ridge or both sides of the ridge) were used to estimate its effect on quantity and quality of okra seed. Results revealed that application of FD3 (N60:P60kg/acre) recorded higher yield attributes in terms of plant height (121.2cm), pods per plant (14.4), pod yield per plant (59.4g), seed yield per plant (36.0g), seed yield per plot (3.0kg) and weight of 100-seeds (5.2g). While, FD1 (N30:P45:S02kg/acre) gave the highest values for seed viability (88.3%), mean emergence rate (3.7), radicle length (5.9cm), plumule length (5.4cm), seedling length (10.2cm), seedlings fresh weight (3.8g) and vigor index of seedlings (894.5). We obtained maximum side branches (7.2) from fertilizer treatment FD2 (N30:P30kg/acre). Planting geometry PG2 (plants on both sides of the ridge) produced maximum plant height (122.2cm), side branches (6.8), seed yield per plot (3.3kg), 100-seeds weight (5.4g), seed viability (91.4%), radicle length (5.6cm), seedlings fresh weight (3.6g) and vigor index of seedlings (878.5). Results indicated that N30:P30 kg/acre using nitrophos produced highest quality seed yield of okra with high seed quality in terms of 100-seeds weight and vigor index.