1、Obtaining of granular fertilizers based on ashes from combustion of waste residues and ground bones using phosphorous solubilization by bacteria

MSSA and dried blood can be used as a fertilizers. The article presents research results on obtaining phosphorus granulated fertilizers on the basis of microbiologically activated sewage sludge ashes, ground bones and dried blood from meat industry.

2、Water soluble phosphate fertilizers for crops grown in calcareous soils – an outdated paradigm for recycled phosphorus fertilizers?

We applied 33 P isotopic dilution method to evaluate recycled P fertilizers based on plant P uptake from fertilizer relative to plant uptake from a water soluble P reference fertilizer.

3、Production method of water

A trace element, water-soluble fertilizer technology, applied in fertilizer mixtures, fertilization devices, applications, etc., can solve the problems of unstable properties of trace elements, self-decomposition changes, material loss, etc., and achieve the effect of reducing water-insoluble matter and residence time.

4、Preparation and characterization of cellulose acetate‐coated compound fertilizer with controlled‐release and water‐retention

A novel cellulose acetate-coated compound fertilizer with controlled-release and water-retention (CAFCW) was prepared, which possessed the three-layer structure.

5、Comparison of five soil testing methods to establish phosphorus sufficiency levels in soil fertilized with water

Sufficiency levels were calculated for the PAPR and water-soluble fertilizers using nonlinear regression analysis and a graphic procedure for each of the P soil testing methods.

Production of a water

In order to increase the amount of water-soluble protein or free amino acids, the soybean meal must be hydrolyzed (Bell et al., 1998). Many methods have been used to modify soybean meal protein, such as enzymatic hydrolysis, physical solution, chemical solution and fermentation (Jane et al., 2008).

Co

Nitrogen could be added to ash fertilizers by co-granulating bio-ash, for example, with sewage sludge. However, co-granulation has not been studied extensively.

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.

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

Irrigation and fertilization are key practices for improving the fruit quality and yield of vegetables grown in greenhouses.

Phosphate Removal from Water: A Comparison of Adsorbents

This was achieved by adding 80mL of distilled water and granulating the mixture. The pellets were made moisture less at 105oC in an oven until a constant weight was reached.

Granular water-soluble fertilizers are an important form of fertilizer, transforming water-soluble nutrients into solid particles through granulation processes. This enhances storage and transport convenience. Below are common granulation methods for water-soluble fertilizers:

1. Extrusion Granulation: This method involves melting raw materials (e.g., nitrates, phosphates) under high temperature and mechanical pressure, then extruding them through a die to form uniform particles. It offers high efficiency and consistent particle size but requires significant investment.

2. Spray Granulation: Raw materials mixed with binders (e.g., starch, cellulose) are sprayed into hot air, where rapid drying forms particles. This approach is cost-effective and simple but produces less durable particles prone to breaking.

3. Rotational Granulation: Ingredients are mixed with binders in a rotating drum, compressed into particles by friction. It yields high-strength particles but has lower productivity and higher operational costs.

4. Centrifugal Granulation: A centrifuge mixes raw materials and binders, using centrifugal force to form particles. This method ensures strong, uniform particles with controlled size and shape.

5. Spray Drying Granulation: A solution of water-soluble nutrients is atomized into fine droplets, dried by hot air, and collected as particles. It produces high-quality granules with simple operation but higher energy costs.

6. Fluidized Bed Granulation: Raw materials and binders are granulated in a fluidized bed, resulting in uniform particles. This method is efficient but requires costly equipment.

7. Microwave-Assisted Granulation: Microwave radiation heats and melts materials quickly, forming particles. It is energy-efficient but involves high equipment costs and potential hazardous byproducts.

8. Ultrasonic Granulation: Ultrasonic waves fragment and disperse materials, which are then compacted into particles. This method is efficient, low-energy, and environmentally friendly.

Each granulation method has distinct advantages and limitations. The choice depends on production conditions, budget, and product requirements. Selecting the optimal approach balances efficiency, cost, and quality to meet specific needs.