Frequently Asked Questions
Q
What is humic acid?
A
Humic acid is a type of organic matter formed from the decomposition and transformation of plant and animal remains, primarily plant remains, through microbial action, a series of chemical processes, and accumulation. Humic acid is acidic (pH 3-5) and can be used to improve alkaline soil in saline-alkali land, increase crop yields, and for other purposes.
Q
What is humic acid from mineral sources?
A
It is a humic acid extracted from peat, lignite, and weathered coal, composed of fulvic acid, humic acid, and humin. A small amount, 1-2 kg/mu, can be used throughout the growing season with good results.
Q
How many types of humic acid are there?
A
Classified by molecular weight, they can be divided into three categories:
1. Brown humic acid: The part of humic acid that is soluble in alkali but insoluble in acid is called brown humic acid. 2. Black humic acid: The part of humic acid that is insoluble in both alkali and acid is called black humic acid. 3. Fulvic acid: The part of humic acid that is soluble in both alkali and acid is called fulvic acid. Among them, fulvic acid is the most active and has the most significant effect on crop yield.
Q
What are the main functions of humic acid in agriculture?
A
The main agricultural applications of humic acid fall into these five categories: 1. Soil improvement. This mainly manifests in improving soil structure and increasing crop yields. 2. Fertilizer efficiency enhancement. This includes reducing nitrogen volatilization and promoting nitrogen absorption. 3. Stimulation of crop growth. Promoting root growth and enhancing photosynthesis in crops. 4. Enhancing crop stress resistance. Under adverse conditions such as water stress, temperature stress, salinity, and heavy metal stress, the application of humic acid allows plants to maintain a faster growth rate. 5. Improving the quality of agricultural products. Making crop stems strong and resistant to lodging, leaves lush, and increasing chlorophyll content, etc.
Q
What are the differences between humic acid, alginic acid, and amino acids?
A
Humic acid and alginate, on their own, promote crop growth by influencing the environment or regulating a specific aspect of crop metabolism; while amino acids are directly absorbed by crops and become part of their internal structure. In other words, amino acids, once absorbed, immediately become part of the metabolic process, transforming into what the crop needs most, whereas humic acid promotes the synthesis of these essential components after absorption.
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