Humic Acid (HA) is extracted from natural leonardite. It is a high molecular organic acid composed of various functional groups, and has good physiological activity and functions of absorption, complexation and exchange.

1. Stimulate physiological metabolism:
Humic acid contains a variety of active functional groups, which can enhance the activity of enzymes in crops, stimulate physiological metabolism, and promote growth and development.
For example, humic acid can promote early germination of seeds, and the emergence rate is high, especially at low temperatures; it can stimulate the division and growth of root meristem cells, making the seedlings root grow faster and larger, so that crops absorb water and have enhanced nutrient capacity.
Therefore, the crop nutrient supply is sufficient, the foliage is flourishing, the photosynthesis is enhanced, the nutrient is accelerated to the fruiting body, and the fruit is prematurely colored and matured.

2. Change the characteristics of chemical fertilizers:
Humic acid contains carboxyl, phenolic hydroxyl and other functional groups, has strong ion exchange and adsorption capacity, can reduce the loss of ammonium nitrogen in the conversion process, and improve the utilization of nitrogen fertilizer.
It inhibits the fixation of phosphorus in soil, converts available phosphorus into delayed-effect phosphorus, and promotes the absorption of phosphorus by roots.
Humic acid can chelate with and insoluble trace elements and makes more soluble elements which is easy to be absored by roots and leaves.

3. Enhance resistance to stress:
Humic acid can reduce the stomata opening strength of plant leaves, reduce leaf transpiration, thereby reducing water consumption, improving the water status of plants, ensuring normal growth and development of crops under drought conditions, and enhancing drought resistance.

4. Improve soil structure:
Humic acid can adjust the soil structure, regulate soil pH, enhance water-holding ability, fertility, air-exchange, and temperature of the soil.
Promote soil microbial activities. Increase the number of aerobic bacteria, actinomycetes, and cellulolytic bacteria, accelerate the decomposition and conversion of organic substances, promote the release of nutrients, and facilitate the absorption of nutrients by crops.

5. Improve fruit quality:
Humic acid can chelate with trace elements, increase the amount of trace elements moving from the roots to the leaves or other parts, regulate the ratio and balance of the large number of elements and trace elements, and strengthen the synthesis of sugar, starch, protein, fat, vitamins.
It can promote the activity of the enzyme, convert the polysaccharide into soluble monosaccharide, increase the synthetic accumulation of starch, protein and fatty substances, accelerate the metabolism of the primary products from the stems or leaves to the fruits and seeds, and make the fruit in good appearance and high quality.

The biological advantages of humic acid:
From a biological point of view, humic acid can stimulate the activity of biological and microscopic organisms.
◆ Stimulate plant enzymes and increase yield;
◆ Can be used as an organic catalyst during crop growth;
◆ Stimulate the growth and growth of beneficial microscopic organisms in the soil;
◆ Improve the ability of crops to resist pests and diseases;
◆ Stimulate the development of the roots, especially the direct absorption of nutrients;
◆ Promote the development of root respiration and roots;
◆ Promote the formation of chlorophyll and the formation of sugars and amino acids in plants to help with photosynthesis;
◆ Increase the content of minerals and vitamins in plants;
◆ Thicken the cell wall of the fruit and extend its storage time;
◆ Promote seed germination;
◆ By accelerating cell division, the root system develops rapidly, thereby stimulating the growth of plants;
◆ Increase the yield of crops while improving quality and the physical appearance.

Applications:
1) Used as muliti-functional compound fertilizer, combined with Nitrogen and Phosphorus, also used as basal fertilizer, top dressing, seed fertilizer, foliar fertilizer.
2) Basal fertilizer: 400-600kg/ha, have better effective applying with N P fertilizers
3) Top dressing: 300-400kg/ha, have better effective applying with N P fertilizers, and irrigate in time.

Package:
25kgs kraft bag with inner plastic linings or as requirement of customer.