1、Phosphorus use efficiency and management in agriculture

When fertilizer containing water-soluble P is added to the soil, a very small proportion remains in the soil solution, with most of the P initially precipitating as high solubility reaction products.

2、Water soluble phosphate fertilizers for crops grown in calcareous soils – an outdated paradigm for recycled phosphorus fertilizers?

We concluded that water solubility is not required when P forms in recycled products are comparable to reactions products of rock phosphate based fertilizers in soil. Alternatives to fully water soluble P fertilizers are available to supply P to crops grown on calcareous soil efficiently.

3、The Chemistry and Agronomic Effectiveness of Phosphate Fertilizers

Plants take up P from soil solution, so water-soluble P fertilizers are generally more effective than poorly soluble forms. The original sources of P used for agriculture were poorly soluble materials, including manures, bones, guano and phosphate rock.

4、Evaluation of the effects of irrigation and fertilization on tomato fruit yield and quality: a principal component analysis

In conclusion, the proper application of drip fertigation (W2F1) may be a good compromise for solar greenhouse-grown tomatoes with regard to fruit yield and quality, WUE, and PFP.

5、Time of Soaking (days)

Dissolution rate and released N, P and K after soaking the fertilizer in deionized water for different periods up to 120 days under constant temperature (100°F i.e 37.8 °C) indicate the possibility of using such polymer to produce effective coatings for water soluble fertilizers.

Agronomic Effectiveness of Zinc Sources as Micronutrient Fertilizer

These results would suggest that for alkaline soils (pH > 7.4) highly water-soluble sources may be more effective Zn fertilizers even when the fertilizer is powdered and mixed through soil.

Effects of new coated release fertilizer on the growth of maize

The release and dissolution rates of water-soluble fertilizers depend on the coat-ing materials (Wu et al. 2008). As the price of organic polymer coated fertilizer was too high, some inor-ganic materials and aldehydes were used to make new fertilizer.

Production of a water

Based on the Plackett–Burman design, the initial pH of the fermentation substrate, number of days of fermentation, and the ratio of liquid to soybean meal exhibited significant effects on the recovery of proteins in the resulting water-soluble solution.

Comparing the effectiveness of fertilizers

The effectiveness of different sources of the same nutrient should be compared using plots of yield versus fertilizer applied to find how much more of the less-effective source is needed to provide the same yield.

Improving Water Use Efficiency of Lettuce (Lactuca sativa L.) Using Phosphorous Fertilizers

Improved water use efficiency (WUE) represents a key factor in increasing crop productivity under such water scarcity conditions. Therefore, scientific research in this context to save irrigation water and improve its productivity in Jordan is extremely needed.

Water-soluble fertilizers, also known as liquid fertilizers or water-soluble fertilizers, are highly efficient fertilizers that use water as a solvent. Compared to traditional solid fertilizers, they offer advantages such as ease of use, rapid nutrient absorption, and resource conservation. the timing and effectiveness of their application must be carefully managed to ensure optimal results and safety.

Understanding the Composition of Water-Soluble Fertilizers

Generally, water-soluble fertilizers consist of essential elements like nitrogen (N), phosphorus (P), and potassium (K), along with trace elements such as iron (Fe), manganese (Mn), and zinc (Zn). The solubility of these nutrients can be influenced by factors like temperature and soil pH, so adjustments based on specific conditions are necessary.

Defining the "Effectiveness Duration"

The effectiveness duration of water-soluble fertilizers refers to the time their active ingredients remain available in the soil. This duration varies depending on factors such as fertilizer type, crop requirements, and climate. Typically, crops absorb water-soluble nutrients within 30–60 minutes after application. it is best to apply these fertilizers during critical growth stages, such as early development or peak growing periods.

Key Measures to Ensure Effectiveness

1. Select Fertilizers Based on Crop Needs Different crops have varying nutritional demands. For example:

   • Use acidic water-soluble fertilizers for crops thriving in acidic soils.
   • Choose alkaline formulations for crops preferring alkaline conditions.

2. Adjust Application Timing Based on Climate

   • In spring (cool temperatures and slow growth), reduce fertilization rates.
   • During summer (warm temperatures and rapid growth), increase rates as needed.
   • Consider local rainfall, sunlight hours, and humidity to optimize timing.

3. Control Fertilization Dosage

   • Avoid overapplication to prevent waste and environmental harm.
   • Follow recommended dosages based on soil fertility and crop needs.

4. Use Proper Application Methods

   • Foliar Spraying: Apply on sunny days to ensure even coverage.
   • Drip Irrigation: Use suitable equipment and regularly maintain systems.
   • Combine methods (e.g., foliar + root zone) for synergistic effects.

5. Post-Application Management

   • Remove weeds to minimize nutrient competition.
   • Irrigate properly to maintain soil moisture and enhance absorption.
   • Regularly test soil and crop nutrient levels to refine application plans.

The effectiveness duration of water-soluble fertilizers depends on balancing crop needs, climate, and application techniques. By tailoring fertilizer types, dosages, and timing to specific conditions, farmers can maximize crop yields and quality while minimizing environmental impact. Proper management ensures these fertilizers deliver their full potential in modern agriculture.