Mineralogy and Maximum Phosphorus Adsorption Capacity in Soybean Development
| Autor: | Milton César Costa Campos, Gustavo André de Araújo Santos, Guilherme Ferreira Ferbonink, Naiara Fernanda de Souza, Romário Pimenta Gomes, Marizane Pietroski, José Marques Júnior, Getulio de Freitas Seben Junior, Gustavo Caione, Reginaldo de Oliveira, Laércio Santos Silva |
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| Rok vydání: | 2018 |
| Předmět: |
Goethite
Chemistry Phosphorus food and beverages Mineralogy chemistry.chemical_element 0102 computer and information sciences 04 agricultural and veterinary sciences Phosphate Latosol 01 natural sciences chemistry.chemical_compound Adsorption 010201 computation theory & mathematics visual_art Soil water 040103 agronomy & agriculture visual_art.visual_art_medium 0401 agriculture forestry and fisheries Kaolinite Gibbsite |
| Zdroj: | Journal of Agricultural Science. 10:242 |
| ISSN: | 1916-9760 1916-9752 |
| DOI: | 10.5539/jas.v10n7p242 |
| Popis: | The low natural fertility of tropical soils and the mineralogy almost dominated by iron and aluminum oxides limit the availability of phosphorus (P) to the plants, causing negative impacts on soybean yield. Objective was to evaluate the effect of phosphate fertilization on soils with different maximum phosphorus adsorption capacities (PAC) in soybean development. The experiment was carried out under greenhouse conditions, using Red-yellow Latosol (RYL) and a Typic Hapludalf (TH) soil as substrate. The analyses were performed by a completely randomized experimental design in a 5 × 2 factorial arrangement with three replications. The treatments consisted of 5 doses of P applied, corresponding to 0, 1, 6, 12, and 24% of PAC of each soil. In the soil, the mineralogy of the clay fraction (hematite, goethite, gibbsite and kaolinite) and crystallographic attributes were characterized. In the plant, we evaluated growth and pod production. The PAC of the soils ranged from 220 to 650 mg dm-3 with higher value in the RYL associated to clayey oxidic mineralogy and texture in relation to the TH of kaolinite origin and sandy texture, where the higher energy of adsorption observed was to TH. Phosphorus application from 16 to 21% of PAC, independently of the soil, promotes the same pattern of response with improvements in soybean development evidenced by increases in P content in plant tissue, plant height, root volume and aerial dry mass. |
| Databáze: | OpenAIRE |
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