Effect of Azotobacter Application Method on Yield of Soybean (Glycine max (L.) Merill) on Dry Land
2020
Hindersah, Reginawanti | Risanti, Rara Rahmantika | Haikal, Ibnu | Mahfud, Yuliati | Nurlaeny, Nenny | Rachmadi, Meddy
Biofertilizer which contain rhizobacteria Azotobacter increase soil fertility and improve plant growth through nitrogen fixation and phytohormone production. The objective of this study was to compare the responses of soybean (Glycine max (L.) Merill) plants in dry land after the application of several Azotobacter inoculation methods. Field experiments were carried out with a randomized block design consisting of five treatments with five replicates each. The treatments were seed inoculation, soil treatment before planting, soil treatment after planting and plant dressing. Plant inoculation with Azotobacter treated with half of recommended dosage urea while the control plant received recommended dose urea. The experimental results showed that all application methods did not affect soybean production, number of nodules, Azotobacter populations in the rhizosphere and N total soil; but Azotobacter inoculation through leaves increased N uptake and weight of 100 soybean seeds.
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