Gogoi, SailenDhar, Sunita2024-07-112024-07-112023https://krishikosh.egranth.ac.in/handle/1/5810211792The present study entitled “Impact of different organic manures on green fruits and seed production of Okra” was carried out to analyse the effect of different doses of organic manures viz., Farm Yard Manure (FYM), Vermicompost and Enriched compost alone or in combination with Microbial consortia on the growth characteristics, fruit yield and seed production. The experiment was conducted during 2022 in the Organic Block of Experimental Farm, Department of Horticulture, Assam Agricultural University, Jorhat-13 with treatments comprising of FYM 10 t/ha (T1), FYM 5 t/ha (T2), FYM 2.5 t/ha + Microbial consortia (T3), Vermicompost 5.0 t/ha (T4), Vermicompost 2.5 t/ha (T5), Vermicompost 2 t/ha + Microbial consortia (T6), Enriched compost 2.0 t/ha (T7) and untreated control (T8) which were applied at the time of final land preparation. The experiment was laid out in Randomised Block Design (RBD) with three replications. Height of plants was the highest under treatment T6 (Vermicompost 2 t/ha + Microbial consortia) whereas number of leaves, leaf area, stems girth, plant fresh weight and dry weight were recorded the maximum under T7 (Enriched compost 2.0 t/ha). The fruit yield parameters such as fruit weight (14.60 g), fruit volume (18.03 cc), fruit yield per plant (202.93 g) and total yield (95.74 q/ha) were also maximum under T7 (Enriched compost 2.0 t/ha). However, the highest Net Return of 2,08,800.00 per ha from tender fruits was produced with application of Vermicompost 2 t/ha + Microbial consortia (T6) leading to the maximum Benefit: Cost ratio of 3.80. The seed yield per plant, total seed yield, seed viability percentage was higher with treatment T6 while the lowest was recorded in T8 (Untreated control). The seed vigour at harvesting time and after 3 months of storage was the highest in Vermicompost 5.0 t/ha (T4) while Vermicompost 2 t/ha + Microbial consortia (T6) could retain higher vigour till 6 months of storage. Economic analysis of using organic manures for okra seed production showed FYM 2.5 t/ha + Microbial consortia (T3) to yield maximum B: C ratio of 6.32, followed by 6.09 with sole application of FYM @ 10 t/ha (T1). Thus, it can be concluded from the present experimental analysis that plant growth and fruit yield parameters were significantly enhanced by Enriched Compost 2 t/ha (T7) but was not statistically superior to Vermicompost 2 t/ha + microbial Consortia (T6). However, computation of production economics revealed that Vermicompost 2 t/ha + microbial Consortia (T6) to be the most remunerative for tender fruit production. For organic seed production and seed quality attributing characters, fortification of 2.5 t/ha of FYM with microbial consortia (T3) proved to be most profitable.EnglishThesis