Penelitian ini bertujuan untuk mempelajari pengaruh inokulasi Rhizobium dengan penambahan pupuk kandang ayam terhadap peningkatan pertumbuhan dan produksi kedelai. Penelitian ini dilakukan di Kebun Hortikultura Socah, Desa Keleyan, Kecamatan Socah, Bangkalan, pada bulan Desember 2018 sampai Maret 2019. Rancangan penelitian yang digunakan adalah Rancangan Acak Kelompok (RAK) dengan kombinasi inokulasi Rhizobium (50, 100, 150 g) dengan pupuk kandang ayam (1,3 dan 3,25 ton/ha). Berdasarkan hasil penelitian yang telah dilakukan dapat disimpulkan bahwa inokulasi Rhizobium dengan penambahan pupuk kandang ayam memberikan pengaruh berbeda-beda. Kontrol menunjukkan hasil tertinggi perlakuan pada parameter bintil akar (2,56 buah) dan bintil akar efektif (12,38 buah) umur 14 HST. R1P1 (inokulasi Rhizobium 50g/kg benih dengan penambahan pupuk kandang ayam 1,3 ton/ha) menunjukkan hasil tertinggi pada parameter bintil akar (1,07 buah) dan bintil akar efektif (10,25 buah) umur 28 HST, serta bobot 100 biji (24,19 g). R1P2 (inokulasi Rhizobium 50 g/kg benih dengan penambahan pupuk kandang ayam 3,25 ton/ha ton/ha) menunjukkan hasil tertinggi pada parameter luas daun umur 28 HST (4600,64 cm2), jumlah cabang (7,00 buah) dan polong cipo (12,56 buah buah). R2P2 (inokulasi Rhizobium 100 g/kg benih dengan penambahan pupuk kandang ayam 3,25 ton/ha) menunjukkan hasil tertinggi pada parameter biomassa (52,60 g). R3P1 (inokulasi Rhizobium 150 g/kg benih dengan penambahan pupuk kandang ayam 1,3 ton/ha) menunjukkan hasil tertinggi pada parameter produksi (4,19 ton/ha). R3P2 (inokulasi Rhizobium 150 g/kg benih dengan penambahan pupuk kandang ayam 3,25 ton/ha) menunjukkan hasil tertinggi pada parameter tinggi tanaman umur 21 HST (21,91 cm), jumlah polong isi (68,81 buah), kandungan N total daun (10,00 %) dan bobot kering akar (2,78 g). Kata kunci: Rhizobium, pupuk kandang ayam, kedelai.

This study aims to study the effect of Rhizobium inoculation by adding chicken manure to the increase in soybean growth and production. The study was conducted at the Socah Horticulture Garden, Keleyan Village, Socah District, Bangkalan, in December 2018 to March 2019. The research design used was a Randomized Block Design (RBD) with a combination of Rhizobium (50, 100, 150 g) inoculation with manure chicken (1,3 and 3,25 tons/ha). Based on the results of research that has been done it can be concluded that the inoculation of Rhizobium with the addition of chicken manure has different effects. The control showed the highest results of treatment in root nodule parameters (2.56 pieces) and effective root nodules (12.38 pieces) aged 14 HST. R1P1 (Rhizobium 50 g/kg seed inoculation with the addition of 1.3 tons/ha of chicken manure) showed the highest results in root nodule parameters (1.07 pieces) and effective root nodules (10.25 pieces) aged 28 HST, and weight 100 seeds (24,19 g). R1P2 (Rhizobium 50 g/kg seed inoculation with addition of 3.25 tons/ha chicken manure) showed the highest yield on the parameters leaf area aged 28 HST (4600,64 cm2) of the number of branches (7.00 pieces) and number of empty pods (12.56 piece). R2P2 (Rhizobium 100 g/kg seed inoculation with addition of 3.25 tons/ha of chicken manure) showed the highest yield on biomass parameters (52.60 g). R3P1 (Rhizobium 150 g/kg seed inoculation with 1.3 tons/ha addition of chicken manure) showed the highest yield on production parameters (4.19 tons/ha). R3P2 (Rhizobium 150 g/kg seed inoculation with addition of 3.25 tons/ha of chicken manure) showed the highest yield on plant height parameters (21.91 cm) age 21 HST,, number of filled pods (68.81 pieces), total N content of leaves (10.00%) and root dry weight (2.78 g). Keywords : Rhizoium, chicken manure, soybean

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