2024年1月24日 · Achieving precise control over the nutrient release rate of biodegradable polymer fertilizers, such as urea–formaldehyde (UF), is a crucial aim in agricultural research, with significant implications for both crop yield and environmental sustainability. This study addresses this aim by developing a nanocompo

This invention relates generally to high analysis fertilizer mixtures of synthetic organic and inorganic materials and particularly to formulations and methods for blending and using...

This study addresses this aim by developing a nanocomposite UF/monopotassium phosphate (MKP) fertilizer through a combination of solution mixing, polycondensation, and free water evaporation. The methodology employed in this study ensures the suc

The objective of this work is to determine the impact of applying mono-potassium phosphate (MKP) and urea fertilizer to corn foliage at several growth stages on grain yield and grain components.

2023年11月19日 · The current study aims to prepare a novel synthetic slow-release nitrogen fertilizer (NF) using urea, formaldehyde, and weathered coal powder as raw materials, and to investigate its nutrient...

ABSTRACT: A new granular, slow-release fertilizer prepared by a cold-extrusion strategy (GSRFEx) based on urea-formaldehyde (UF), ammonium polyphosphate (APP), and amorphous silica gel (ASG) was presented. Characterizations showed that there were strong hydrogen-bond interactions and good compatibility among UF, APP, and ASG in GSRFEx.

2023年5月9日 · In this study, we use urea phosphate as the reaction material and condense it with urea formaldehyde prepolymer to prepare a new type of biodegradable polymer slow-release fertilizer containing nutrient N and P (PSNP).

2016年3月1日 · Urea–formaldehyde in the presence of MMT is effective to obtain fertilizer. Fertilizer nanocomposites were produced by cold plastic extrusion. Fertilizer nanocomposites presented good mechanical resistance. Efficient results were found in water-solubility and soil incubation tests.

2018年6月1日 · Nitrogen loss through NH3 volatilization is a primary concern for urea as fertilizer due its fast hydrolysis by soil urease. To minimize this problem herein we developed a partially-polymerized...

2017年11月15日 · Nitrogen loss through NH 3 volatilization is a primary concern for urea as fertilizer due its fast hydrolysis by soil urease. To minimize this problem herein we developed a partially-polymerized urea–formaldehyde granule as a slow-release fertilizer, by melt stage process as a viable route for large-scale production.