New Amphiphilic Composite for Preparing Efficient Coated Potassium-Fertilizers for Top-Dressing Fertilization of Annual Crops
| Autor: | Oscar Urrutia, Kent Hoshiba, Javier Erro, Yves Alis, Roberto Baigorri, Andre Zabini, Manuel Martín-Pastor, Anne F Blandin, José María García-Mina, Jean Claude Yvin |
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| Rok vydání: | 2018 |
| Předmět: |
0106 biological sciences
Crops Agricultural Scanning electron microscope Potassium Drug Compounding Composite number chemistry.chemical_element engineering.material 01 natural sciences Soil Coating Amphiphile Fertilizers Cement Chemistry Alkyd Potash technology industry and agriculture Water 04 agricultural and veterinary sciences General Chemistry Kinetics Chemical engineering visual_art 040103 agronomy & agriculture engineering visual_art.visual_art_medium 0401 agriculture forestry and fisheries General Agricultural and Biological Sciences 010606 plant biology & botany |
| Zdroj: | Journal of agricultural and food chemistry. 66(19) |
| ISSN: | 1520-5118 |
| Popis: | This study describes the efficiency of a new coating material for preparing granulated potassium-fertilizers with a potassium release to the soil solution sensitive to rainfall intensity. The composite is prepared by reaction of an alkyd-resin with cement in the absence of water. The complementary use of diverse analytical techniques showed that the presence of the cement fraction induced alkyd resin reticulation and gradual cement-resin hardening. Scanning electron microscopy revealed the formation of micro and nanopores within cement-clusters, whose water permeability is affected by the resin reticulation and amphiphilic character. Potassium release was evaluated in water, soil-columns, and in soil-plant trials in pots and open-field. Agronomic results were consistent with potassium release rates obtained in water solution and soil columns. The composite-coated potassium fertilizer was more efficient than the noncoated one in providing plant available potassium, with this effect being dependent on water presence in soil. |
| Databáze: | OpenAIRE |
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