The article presents data on the effect of the type and depth of fertilizer application on the development of the root system and stem growth of soybeans. Organic farming provides a set of measures aimed at preserving the fertility and ecological well-being of the area. Experiment included factors and variants: A -1. Control -without fertilizers; 2. Sapropel; 3. Wood ash; 4. Chicken manure. Factor B -depth of fertilizer application below seed sowing: 1. Control -did not apply; 2. 60 mm; 3. 80 mm; 4. 100 mm. The research showed that the soybean plants grow better and reach a height of 259-411 mm, form a branched root system going deep into the soil at the depth of 305-311 mm, with the root volume 51 ml and weight 39 g when the granulated wood ash is put in the soil at the depth of 100 mm below putting the seeds. When designing machines for simultaneous deepening, seeding and local fertilizer application, the design of working tools for granulated wood ash application should be oriented.
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