1、Synthesis of artificial humic acid

Urea is a highly concentrated N fertilizer, which is a neutral speed-effective fertilizer and is also widely used in the production of multiple compound fertilizers (Lin et al., 2017; Oladele et al., 2019).

2、Humic Acids Incorporated into Urea at Different Proportions

Humic acids (HAs) incorporated into urea fertilizers are highly effective at increasing yield and decreasing fertilizer-derived nitrogen (N) loss from soil, but reports of the optimal proportion in fertilizers remain widely inconsistent.

3、Understanding the Role of Humic Acids on Crop Performance

Reviewed literature shows that HA can positively affect soil physical, chemical, and biological characteristics, including texture, structure, water holding capacity, cation exchange capacity, pH, soil carbon, enzymes, nitrogen cycling, and nutrient availability.

Humic Acid Fertilizer: What It Is and Its Key Benefits

Humic acid fertilizer is a natural soil amendment and plant enhancer gaining increasing recognition in both home gardening and large-scale agriculture. This organic product offers a sustainable approach to improving soil health and boosting crop yields without relying solely on synthetic chemicals.

Beneficial effect of humic acid urea on improving physiological

Among HA fertilizers, humic acid urea fertilizer (HU) is an emerging slow-release urea fertilizer, that can stimulate the nitrogenous utilization efficiency, promote N absorption and accumulation by plants, and, consequently, increase crop yield.

Understanding How Humic Acid Fertilizers Regulate Nitrogen, Promote

Humic acid fertilizers make soil better, help plants get phosphorus, and help crops grow in tough places. The organic and humic substances in these fertilizers are important for keeping soil healthy.

Synthesis of artificial humic acid

While using artificial humic acid to prepare novel N fertilizer is a good choice to improve its efficiency, the high heterogeneity of artificial humic acid limits its structural analysis and utilization efficiency.

Humic Acid Urea: Enhancing Fertilizer Efficiency for Better Crop

Humic acid urea is a blend of urea fertilizer and humic acid, designed to improve nitrogen efficiency and soil health. Urea is a widely used nitrogen fertilizer, but it is prone to volatilization and leaching, leading to nutrient loss and environmental concerns.

The Application of Humic Acid Urea Improves Nitrogen Use

Humic acid is an N fertilizer synergist that plays an active role in promoting plant growth, prolonging fertilizer efficiency and reducing N losses [12]. Firstly, humic acid promotes root growth and development, causing increased root biomass [13].

"Humic Acid: Types, Sources & Fertilizer Uses Guide"

Discover humic acid’s definition, main types, and natural sources. Learn how it boosts fertilizer efficiency and improves soil health for higher yields.

Humic acid urea fertilizer is a compound organic fertilizer primarily composed of humic acid and urea. Humic acid, a natural soil organic matter rich in essential nutrients, improves soil structure and enhances fertility. Urea, a nitrogenous fertilizer, provides vital nitrogen for plant growth.

Key Functions of Humic Acid Urea Fertilizer:

1. Enhances Soil Fertility: Humic acid enriches soil nutrients, promoting crop growth.
2. Improves Soil Structure: It increases soil aeration and water retention, benefiting root development.
3. Boosts Fertilizer Efficiency: Humic acid adsorbs and stabilizes nutrients, reducing nutrient loss and improving utilization.
4. Increases Crop Yields: By enhancing photosynthesis, it contributes to higher agricultural output.
5. Reduces Chemical Pollution: Minimizes environmental contamination from synthetic fertilizers.
6. Improves Product Quality: Elevates the market value of agricultural produce.
7. Supports Sustainable Agriculture: Maintains soil health and prolongs arable land use.

Application Methods:

1. Mix with Chemical Fertilizers: Combine with nitrogen, phosphorus, or potassium fertilizers at appropriate ratios.
2. Direct Application: Apply near crop roots or spread evenly over the soil.
3. Blend with Other Organics: Mix with manure, green manure, or compost.
4. Regular Application: Adjust frequency based on crop stages and soil conditions.
5. Control Dosage: Tailor usage to crop type, soil fertility, and climate.

Advantages:

1. Cost-Effective: Affordable for widespread farmer adoption.
2. Eco-Friendly: Reduces environmental pollution and protects ecosystems.
3. Long-Lasting Effects: Sustains soil fertility for healthier crops.
4. Versatile Use: Suitable for grains, cash crops, fruits, and more.
5. Significant Yield Increase: Boosts agricultural productivity and income.