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soil fertility (7)
soil fertility, climate change, nutrition optimization, resource conservation measures, peas, symbiotic fixation, post-harvest root residues (1)
soil fertility, legumes, nitrogen fixation, biological nitrogen, resource-saving nutrition systems (1)
soil fertility, nutrition optimization, resource saving measures, grain yield (1)
soil fertility, use of straw as an organic fertilizer, humus content, soil tillage measures, biological preparations, sugar sorghum, productivity, product quality (1)
soil fertility, use of straw as organic fertilizer, humus content, soil treatment measures, bio-preparations, sorghum, crop yield, product quality (1)
soil formation factors (1)
soil microbiological activity (2)
soil preparation (1)
soil profile (1)

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