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Biochar is mainly used in agriculture to increase soil fertility and water retention, which leads to improved plant growth. As a result, it improves the overall productivity of agriculture. A field experiment was carried out on alluvial - meadow soil. Six variants have been developed, with the increasing rate of biochar and organic fertilization as a background. The tested crops are broccoli. The aim of the study is to evaluate the combined application of carbonized plant residues and manure as a soil improver on ...