The goal of the Humic Insights page is to provide in-depth and technical knowledge on the use of humic acid and its impact on soil health and nutrient enhancement.
The Humic Insights page is a resource for individuals interested in learning about the impact of humic acid on soil health and nutrient enhancement. The page features technical documents on the use of humic acid and its effect on various soil nutrients, including potassium, nitrogen, and phosphorus, with more to come.
The documents featured on the Humic Insights page are highly technical and intended for individuals looking to deepen their understanding of nutrient cycles in soil. Through these technical documents, readers can gain a comprehensive understanding of the relationship between humic acid and the essential nutrients in soil.
This document describes the different forms of potassium present in soil and their impact on soil fertility. Potassium cations present in the soil solution are taken up by plant roots, while exchangeable potassium is adsorbed on clay and organic colloids and can be improved through the application of humic acids. Non-exchangeable potassium is adsorbed in the interlayer spacing of clay minerals and can be released by humic and fulvic acids.
Humic substances play an important role in the process of nitrogen utilization in soil, by inhibiting the activity of the urease enzyme and reducing ammonium concentration during the hydrolysis of urea, which is the most widely used synthetic nitrogen fertilizer. Humic substances also help to reduce nitrogen leaching and increase the reserve of organic nitrogen in the soil, by promoting beneficial fungal and bacterial populations, increasing the total biomass of crop residues, and facilitating the reduction of organic nitrogen to release inorganic nitrogen faster. The presence of organic nitrogen in soil can be measured by the Sugar Amino Nitrogen Test or ISNT test.
Soil phosphorus comes in two forms, organic and inorganic, which make up the total of the soil’s phosphorus. Although a soil’s total phosphorus is generally high, most of it is immobile and unavailable to the plant. The presence of humic acids promotes microbe growth and the mineralization process of organic phosphorus, making it available to plants. Humic molecules can also form complexes with phosphate ions to make it available to plants, and they promote mycorrhizal fungi that break down mineral phosphorus.
How does soil organic matter (SOM) impact soil health and crop productivity? SOM is an essential factor in soil fertility, nutrient cycling, and water retention. Maintaining adequate SOM levels is crucial for sustainable agriculture, which can be achieved through practices like crop rotation, reduced tillage, and cover cropping. The use of SOM can improve soil quality, boost crop productivity, and reduce soil erosion. Sustainable agricultural practices that encourage SOM can mitigate the adverse effects of climate change and maintain soil health for future generations.
This document explores the interactions between humics and calcium in soil and their impact on plant growth and soil fertility. Humics can bind to calcium ions, affecting calcium availability to plants. Calcium also affects humics structure, which influences their ability to retain water and nutrients. Therefore, it’s crucial to balance soil nutrients to ensure healthy plant growth and maintain soil fertility. Excessive calcium levels can lead to soil alkalinity, negatively affecting plant growth. Overall, understanding these interactions is crucial to promoting healthy plant growth and soil health.