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What are the multifunctional effects of humic acid fertilizers?
Effects on plant growth Humic acid can promote plant root growth. It enhances root vigor and promotes an increase in the number of tillers and secondary roots and their elongation. It improves the seed germination rate. Applying humic acid can accelerate seed germination and increase the emergence rate, especially in early spring and at low temperatures (generally germination can be 1-3...