| Abstrak/Abstract |
Edamame is a food commodity that has high cultivation and economic opportunities. Edamame can be grown in both highlands and lowlands, and the selling price of edamame is higher than other soybean commodities. Edamame cultivation is limited by the low fertility of the soil on the cultivated land. The edamame cultivation area used in this study has low soil fertility. Low soil fertility is based on the low content of soil organic matter, CEC (Cation Exchange Capacity), and the availability of the main macronutrients, namely N, P, and K nutrients. fertilization efficiency, reduction of inorganic fertilizer dosage, and edamame plant productivity. The study was carried out using a completely randomized design (CRD) based on 12 treatments and 3 replications. The treatments were 0 and 2 tons/ha of rice husk biochar, 100 gr/30 kg of mycorrhizal seeds, and 0, 50, and 100% recommended doses of TSP, KCl, Urea, and Za fertilizers. The sampling method of plant tissue in the form of shoots, roots, and edamame pods was carried out during the generative period or ready to harvest. The research data was processed with Anova and further tested with DMRT (Duncan's Multiple Range Test) with a level of 5% to produce information about the suitability of the treatment being studied. The addition of rice husk biochar and mycorrhizae could not reduce the use of inorganic fertilizers TSP, KCl, Urea, and ZA by 50%. The conclusion of this study is based on the results of the study, namely the addition of rice husk biochar and mycorrhizae did not provide significant results on NPK nutrient uptake, thus affecting edamame productivity. The highest production of edamame was produced by using 100% of the recommended dosage of inorganic fertilizers in the form of TSP, Urea, ZA, and KCl. The addition of treatment in this study gave insignificant results on the reaction of soil, soil organic matter, and total soil N. Meanwhile, the chemical properties of the soil gave significant results on the soil CEC, available P and available soil K. Rice husk biochar increase the sweetness of edamame.
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