{"id":14416,"date":"2025-06-17T10:56:36","date_gmt":"2025-06-17T14:56:36","guid":{"rendered":"https:\/\/montysplantfood.com\/?p=14416"},"modified":"2025-06-17T10:56:38","modified_gmt":"2025-06-17T14:56:38","slug":"humic-substances-influence-on-nutrient-cycling","status":"publish","type":"post","link":"https:\/\/montysplantfood.com\/zh\/humic-substances-influence-on-nutrient-cycling\/","title":{"rendered":"Humic Substances Influence on Nutrient Cycling"},"content":{"rendered":"

By\u00a0Fritzie Chen, R&D Scientist \/ Lab Manager, Monty\u2019s Plant Food<\/em><\/strong><\/h3>\n\n\n\n

A growing number of farmers are becoming increasingly aware of the deteriorating condition of agricultural land. The relentless pursuit of higher crop yields has taken a toll on soil health. It is essential to understand that soil is not merely dirt; soil is a complex, living system, whereas dirt is lifeless. Unfortunately, many modern agricultural practices are gradually depleting the life within the soil, effectively reducing it to mere dirt.<\/p>\n\n\n\n

Historically, agricultural practices have treated soil as a reservoir for nutrients such as nitrogen (N), phosphorus (P), and potassium (K), along with micronutrients. These nutrients, once applied, were expected to be absorbed by plants without considering their interactions with the soil and its microbial life. This led to excessive application of N, P, and K fertilizers which results in environmental issues such as soil degradation, surface and groundwater contamination and nitrogen loss through volatilization.<\/p>\n\n\n\n

This growing awareness has sparked a movement focused on soil health, resilience, and remediation. It advocates for agricultural practices that enhance soil functions and services and promote long-term sustainability in agriculture.<\/p>\n\n\n\n

Although, an ideal movement, one of the challenges of establishing sustainable practices is that it is slow acting and obviously farmers wanted fast results. Sustainable farming management practices are also complex, labor intensive and expensive. That is why it is less attractive to adopt these practices. <\/p>\n\n\n\n

To offer a simpler solution, various agricultural products have been introduced to the market to promote sustainable farming. Humic and fulvic acid<\/a> are among the products getting recognized that provide benefits to the soil and to the crop. Monty\u2019s Plant Food<\/a> offers a line of products that both have a sustainable effect as well as provide the nutrients that the crops immediately need. Humic and fulvic acid products are multifunctional. It is difficult to isolate one mode of action because of its unique structure and physico-chemical properties. Biostimulation of roots, increasing microbial activity, improving the soil structure and water holding capacity, and facilitating nutrient cycling are among the known benefits of humic and fulvic acid products- you can think of humic and fulvic acid application as a holistic tool to improve soil management practices.\u00a0<\/p>\n\n\n\n

Most commercial agricultural products are marketed as humic acid, pure fulvic acid, or a combination of both. Technically, each is distinguished by their solubility in different pH levels. Humic acid<\/a> is soluble in alkaline (high pH) conditions but precipitates when acidified. In contrast, fulvic acid is soluble in both alkaline and acidic conditions. Another distinguishing factor is their molecular size. Humic acid consists of larger, more complex molecules with molecular weight that dominates around 22,000 to 27,000 Daltons, while fulvic acid molecules are smaller, with molecular weights in the hundreds of Daltons. Color-wise, humic acid is dark brown to black, whereas fulvic acid appears as an amber-colored solution (Shulgin, 2011).<\/p>\n\n\n\n

Unlike fertilizers such as urea, humic and fulvic acid do not have a definite molecular formula because each molecule is unique. If using the right starting material and using the right technology in product manufacturing, true humic and fulvic acid products will have the core structure and the functional groups that deliver results, which include but not limited to increase in soil water holding capacity, root biostimulation, and increase in cation exchange capacity.<\/p>\n\n\n\n

The effectiveness of humic and fulvic products is dictated by their physico-chemical properties. Characterization of humic and fulvic acid shows heterogenous mixtures of carbon molecules at different lengths, where it is composed of mixture of either aromatic rings, aliphatic chains, or C rings with single or double bonds. Different sections of the structure could resemble protein-like, sugar-like, or quinoid-like structures with a variety of functional groups attached. Carboxylic acid functional groups dominate, followed by phenolic, and hydroxyl groups. <\/p>\n\n\n\n

This structural heterogeneity gave a unique amphiphilic chemical property to humic and fulvic acid products. Depending on the orientation of the humic molecule, one end of the molecule can be water-loving (polar), and the other end can be water-hating (non-polar). This characteristic provides versatility in terms of their benefits to crops and soil. For example, the non-polar portion of the soil, i.e. organic matter interacts with the non-polar portion of the humic molecule creating a bond. In the same way, the polar portion of the humic molecule, i.e. carboxylate and phenolate functional groups, attracts the polar cations. Furthermore, the physicochemical differences between the humic and fulvic acid influence their compatibility in mixing with other agriculture inputs.\u00a0<\/p>\n\n\n\n

Humic and Fulvic Acids in Nutrient Cycling<\/strong><\/p>\n\n\n\n

Efficient nutrient cycling is essential for sustainable farming. It involves how nutrients are utilized by plants, animals, and microorganisms and how these nutrients are recycled back into the system. Humic and fulvic acids, while not primary sources of nutrients, facilitate nutrient cycling by enhancing the interactions between fertilizers, soil, and crops. This ultimately leads to better nutrient uptake and improved crop yields.<\/p>\n\n\n\n

When applied through methods such as 2×2 placement, in-furrow, or broadcast, humic and fulvic acids can be used as standalone products or mixed with starter fertilizers or pesticides. \u8499\u7279\u7684\u6db2\u6001\u78b3<\/a> (MLC), a proprietary humic acid product from Monty\u2019s Plant Food<\/a>, exemplifies this. MLC is a solution (not a suspension) where each humic acid molecule is activated, interacting with soil minerals, organic matter, and microorganisms to create an environment conducive to plant growth from planting to harvest.<\/p>\n\n\n\n

When we talk about soil quality or soil health, we always include in the discussion the soil organic matter and the soil humus. Afterall, there is humic acid<\/a> inherent to the soil system and it has been recognized to be a great contributor to the quality of the soil. True humic acid products, such as MLC is therefore can be thought of as soil humus externally applied. This is probably not universally true for other humic acid products in the market, but MLC has been scientifically engineered so it is as natural as the soil humus found in the soil.<\/p>\n\n\n\n

Some nutrients are lost from the system through leaching, run-off, or volatilization. MLC works to minimize the loss and therefore improve nutrient cycling efficiency. MLC can help the soil by holding on through the nutrients by electrostatic attraction between the negative charges from the carboxylate and phenolate functional groups in MLC and the positive charges in nutrients such as K+<\/sup>, Ca2+<\/sup>, and NH4<\/sub>+<\/sup>. It is known that nitrate-N (NO3<\/sub>–<\/sup>) retention in the soil is weak and humic or fulvic acid in MLC could not hold unto the NO3<\/sub>–<\/sup> by electrostatic attraction as well but MLC can offer indirect help to retain the NO3<\/sub>– <\/sup>in the soil. MLC application can improve the soil structure by acting as the binding agent for fine particles, and in effect improve the water holding capacity of the soil. And by slowing the movement of the water down the soil profile, it minimizes nitrate leaching. Also, better structured soil does not only have better water holding capacity but better aeration that will facilitate root development, and benefits less to no run-off of nutrients.<\/p>\n\n\n\n

Additionally, humic and fulvic acid serve as carbon sources for soil microbes, boosting microbial activity. This supports microbial processes that can immobilize nitrate-N as organic nitrogen and slow releasing the N when the crop needs it. Furthermore, humic and fulvic acids promote microbial diversity. This can immensely support microbial functions such as organic matter decomposition and nutrient release thus enhancing nutrient cycling.<\/p>\n\n\n\n

Enhancing Phosphate and Micronutrient Availability<\/strong><\/p>\n\n\n\n

Phosphate (PO4<\/sub>3-<\/sup>) in the fertilizers is less mobile in soil so there is no problem with it leaching into the ground water. The challenge with that is that PO4<\/sub>3-<\/sup> is tied up in the soil and no longer available for plant use. In acidic soils where Fe and Al oxides dominate, PO4<\/sub>3-<\/sup> is attracted to the positive charges of the oxides forming iron and aluminum phosphates. Meanwhile, if the soil pH is alkaline, the PO4<\/sub>3-<\/sup> binds with calcium to form a water insoluble Ca3<\/sub>(PO4<\/sub>)2<\/sub>. The role of humic and fulvic acid in MLC is to enhance the availability of phosphate. The humic and the fulvic acid can compete with phosphate by chelating the Fe and Al oxides, freeing the phosphate in the process and reducing the toxicity of aluminum. The humic and the fulvic acid can also directly complex with the phosphate by cation bridging making it more soluble and available for plant uptake.<\/p>\n\n\n\n

Similarly, in alkaline soil systems, humic and fulvic acids bind with calcium to free up the phosphate making it more plant available. The ability of humic and fulvic acids to form complexes is also the key in enhancing the availability of micronutrients to crops. The chelated iron, zinc, and copper stays soluble and plant available so it is easily taken up by plants. Another of Monty\u2019s products, \u5fb7\u74e6\u65af<\/a>, a pure fulvic acid, chelates these micronutrients and facilitates its delivery to plants. Drivas is low in pH which when applied to alkaline soil creates a microenvironment especially around the root system to dissolve calcium phosphates and free up phosphates for plant uptake. The ability of humic substances to interact with acids and bases makes them very useful in maintaining consistency in soil pH.\u00a0<\/p>\n\n\n\n

Environmental Remediation and Heavy Metal Immobilization<\/strong><\/p>\n\n\n\n

Humic and fulvic acids also play a role in environmental remediation by immobilizing heavy metals like mercury, lead, and cadmium, reducing their potential toxicity. Compared to micronutrients, most heavy metals have relatively higher charge density, that is why when chelated, their binding energy is stronger than when chelating the micronutrients. In effect, the heavy metals stay immobilized while the micronutrients are released and absorbed when plants need them.<\/p>\n\n\n\n

Products like \u8499\u7279\u7684\u6db2\u6001\u78b3<\/a> \u548c \u5fb7\u74e6\u65af<\/a> are excellent tools for sustainable farming. They offer holistic approaches to meeting the needs of both plants and the soil ecosystem, enhancing nutrient cycling and overall soil health. As standalone products, they deliver significant benefits, but their impact is even greater when integrated with other agricultural inputs.<\/p>\n\n\n\n

\u4e0e\u60a8\u7684 \u8499\u7279\u7684\u4ee3\u8868<\/a> about Monty’s products<\/a> \u548c programs<\/a> and learn how we can help keep you on track to your highest ROI.<\/p>","protected":false},"excerpt":{"rendered":"

By\u00a0Fritzie Chen, R&D Scientist \/ Lab Manager, Monty\u2019s Plant Food A growing number of farmers are becoming increasingly aware of the deteriorating condition of agricultural land. The relentless pursuit of higher crop yields has taken a toll on soil health. It is essential to understand that soil is not merely dirt; soil is a complex,…<\/p>","protected":false},"author":21,"featured_media":14419,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[31],"tags":[622,623,898,646,639,636,627,628,900,719,641,792,784,899,625,794,640,793,626,718],"class_list":["post-14416","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-montys-blog","tag-activated-humic-technology","tag-agriculture","tag-drivas","tag-farming","tag-fertilizer","tag-fulvics","tag-humic-substances","tag-humics","tag-humus","tag-montys-plant-food","tag-montys-liquid-carbon","tag-nitrogen","tag-npk","tag-nutrient-cycling","tag-organic-matter","tag-phosphorus","tag-plant-health","tag-potassium","tag-soil-health","tag-sustainable-agriculture"],"acf":[],"yoast_head":"\nHumic Substances Influence on Nutrient Cycling - Monty's Plant Food<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/montysplantfood.com\/zh\/humic-substances-influence-on-nutrient-cycling\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Humic Substances Influence on Nutrient Cycling - Monty's Plant Food\" \/>\n<meta property=\"og:description\" content=\"By\u00a0Fritzie Chen, R&D Scientist \/ Lab Manager, Monty\u2019s Plant Food A growing number of farmers are becoming increasingly aware of the deteriorating condition of agricultural land. 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