1、Don't Let Your Crops Feel 'Asalted'
When they dissolve in soil water, they increase the salt concentration (also called osmotic pressure) of the soil solution. The higher the osmotic pressure of the soil solution, the more difficult it is for plants or seeds to extract the water they need for normal growth.
2、Understanding Salt Index of Fertilizers
Why are fertilizer salts a problem? * Reproduced from Reid (2006). † Least sensitive does not mean that the crop is not sensitive to salt.
3、水溶性肥料_百度百科
水溶性肥料（Water Soluble Fertilizer，简称WSF），是一种可以完全溶于水的多元复合肥料，它能迅速地溶解于水中，更容易被作物吸收，而且其吸收利用率相对较高，更为关键的是它可以应用于喷滴灌等设施农业，实现水肥一体化，达到省水省肥省工的效能。
Managing Soluble Salts
Fertilizers are forms of salts and therefore contribute to the total soluble salt content of the growing medium. Depending on the inherent salt content of the irrigation water used, fertility levels must be adjusted to avoid salt accumulations.
Why It’s Important to Choose a Fertilizer with a Low Salt Index
Salt content is one of the most critical characteristics of fertilizers. The SI of fertilizer is a measure of the salt concentration that fertilizer induces in the soil relative to Sodium Nitrate.
Less Can Be More: Fertilizer Solubility Explained
Because van der Waals attractive forces are not electrostatic, meaning they have no charge, they are weak forces easily overcome by the presence of high concentrations of positively charged soil solution ions (cations) from soluble fertilizers, soluble soil amendments or soil acidity.
Understanding Water Soluble Fertilizers: A Comprehensive Guide
Water soluble fertilizers are nutrient-rich compounds that dissolve completely in water, making them easily available for plant uptake.
Fluid Nourishment: Unveiling the Secrets of Water
These fertilizers allow for exact control over the distribution of nutrients to crops because they are made to dissolve easily in water. This trait improves crop quality and production by facilitating better nutrient uptake.
Microsoft Word
Fertilizers are salts that contain various plant nutrients. Excessive soluble salts can accumulate in the soil when excess fertilizer is used or when fertilizer is applied repeatedly without sufficient water to leach (wash) the fertilizer (salts) through the soil.
Dealing with salty irrigation water
This e-GRO Alert discusses the importance of water quality, sources of salt contamination and their effects on plant growth, and strategies to mitigate risks associated with “salty” irrigation water.
Water-soluble fertilizers, also known as water-soluble compound fertilizers, are liquid or solid fertilizers that use water as a solvent or dispersing medium. These fertilizers are characterized by high nutrient content, rapid efficacy, growth regulation, zero residue, and ease of use, making them widely applied in agricultural production. some water-soluble fertilizers exhibit a salty taste during use. What causes this phenomenon? The following analysis provides a detailed explanation.
1. Presence of Salts in Water-Soluble Fertilzers
The saltiness primarily arises from the salt content in the fertilizer. These salts mainly consist of nitrogen (N), phosphorus (P), and potassium (K) from chemical fertilizers, which combine with cations such as calcium (Ca²⁺) and magnesium (Mg²⁺) in the soil. During production, stabilizers or dissolvers like surfactants and dispersants may be added to improve stability and solubility. These additives can also contain trace amounts of salt, leading to a faintly salty taste when used.
2. Raw Materials and Byproducts
The salt content may originate from raw materials or byproducts during manufacturing. For example:
- Raw materials: Some fertilizers derive from seawater or saline lakes, which naturally contain salts.
- Byproducts: Industrial processes may generate wastewater, exhaust gases, or other byproducts containing salts. If these untreated, salt-containing substances are used in production, they can introduce residual salts into the final product.
3. Soil-Derived Salts
Agricultural practices can also contribute to salt levels. Farmers may apply fertilizers rich in salts (e.g., potassium chloride, sodium nitrate). When these come into contact with soil, they release salts, which can then be absorbed by water-soluble fertilizers, resulting in a slightly salty taste.
4. Microbial Fermentation
In some cases, microbial fermentation is involved in production. During this process, microorganisms may decompose organic matter into salts, increasing the fertilizer’s salt content.
Key Reasons for Saltiness
The salty taste of water-soluble fertilizers can be attributed to:
- Raw Material Issues: Use of salt-containing sources (e.g., seawater, saline lakes) or untreated byproducts.
- Production Process: Addition of salt-containing additives (e.g., surfactants) or microbial fermentation.
- Storage and Usage: Exposure to environmental factors (e.g., temperature, humidity) or improper application methods can alter salt levels.
Solutions to Reduce Salt Content
To minimize saltiness in water-soluble fertilizers:
- Select low-salt raw materials.
- Optimize production processes to reduce salt-containing byproducts.
- Enhance storage and usage management to maintain product stability.
By implementing these measures, the salt content in water-soluble fertilizers can be effectively lowered, better suiting their role in agricultural production.
