Influence of different proportions of organic manures on growth and yield of okra (abelmoschus esculentus L.)

A field experiment was conducted at research and demonstration block of Research Institute on Organic Farming, UAS, GKVK, Bengaluru during 2016 and 2017 to study the effect of different proportions of organic manures viz., compost, vermicompost and poultry manure on growth and yield of okra. The experiment was laid out in Randomised Completely Block Design. There were twelve treatments consisted with different proportions of organic manures and these were replicated thrice. Among the different proportions of organic manure treatments, T12 [T5 (C:VC: PM-50:25:25 %) + application of jeevamrutha at 20, 40, 60 and 80 DAS] recorded significantly higher fruit yield (7.41 and 8.98 t ha-1), number of fruits per plant (14.56 and 16.26), fruit weight per plant (231.23 and 266.95 g) and fruit length (14.78 and 16.55 cm), plant height (97.72 and 108.44 cm at harvest), leaf area (3354 and 3728 cm2 plant-1 at 90 DAS), TDMA (72.84 and 77.85 g plant-1 at harvest), as compared to rest of treatments. Whereas, application of 100 per cent N equivalent through compost alone (T1) recorded lower fruit yield (T1-5.43 and 6.37 t ha-1), number of fruits per plant (9.81 and 10.88), fruit weight per plant (162.07 and 177.23 g) and fruit length (10.06 and 11.17 cm), lower plant height (71.63 and 77.96 cm at harvest), leaf area (2350 and 2551cm2 plant-1 at 90 DAS), TDMA (50.09 and 53.23 g plant-1 at harvest) during kharif, 2016 and summer, 2017, respectively.