Mineral humic acid promotes the absorption of nutrients by plant roots, so what factors will affect the effect? The following content will explain it to you.
The stimulating effect of mineral humic acid on the absorption of nutrients by plant roots is affected by its concentration, heterogeneity and molecular weight.
Influenced by the concentration of mineral humic acid
Research experiments have shown that the promotion effect of intermediate concentration mineral humic acid on the absorption of K+ and SO42- by oat roots is significantly better than that of too low or too high concentration mineral humic acid treatment.
Influenced by the heterogeneity and molecular weight of mineral humic acid
The research shows that the promotion effect of mineral humic acid with high heterogeneity and unclassified on the absorption of nitrate by barley is significantly higher than that of the graded samples with low heterogeneity; and among the graded mineral humic acids, the promotion effect of mineral humic acid with high molecular weight (> 10000 D) and low molecular weight (< 9000 D) on the absorption of nitrate by barley is stronger than that of mineral humic acid with intermediate molecular weight (9000-10000 D).
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