Monoammonium phosphate coated with polymers and magnesium for coffee plants
| Autor: | Wantuir Filipe Teixeira Chagas, Rafael Mattioli Rezende Chagas, Douglas Ramos Guelfi, Taylor Lima de Souza, André Baldansi Andrade, Jordana Reis Lacerda |
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| Rok vydání: | 2018 |
| Předmět: |
sinergismo
0106 biological sciences General Veterinary agronomic efficiency food and beverages Soil Science tecnologias de fertilizantes Coffea arabica 04 agricultural and veterinary sciences synergism lcsh:S1-972 01 natural sciences monoammonium phosphate eficiência agronômica fertilizer technologies 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Animal Science and Zoology fosfato monoamônico lcsh:Agriculture (General) Agronomy and Crop Science 010606 plant biology & botany Food Science |
| Zdroj: | Ciência e Agrotecnologia v.42 n.3 2018 Ciência e Agrotecnologia Universidade Federal de Lavras (UFLA) instacron:UFLA Ciência e Agrotecnologia, Vol 42, Iss 3, Pp 261-270 Ciência e Agrotecnologia, Volume: 42, Issue: 3, Pages: 261-270, Published: JUN 2018 |
| ISSN: | 1981-1829 1413-7054 |
| DOI: | 10.1590/1413-70542018423002918 |
| Popis: | The coating of phosphate fertilizer granules with polymers and magnesium (Mg) is a technology that can improve phosphorus (P) use efficiency and mitigate problems of low Mg supply in coffee crops. The objective of this work was to evaluate the growth and nutrition characteristics of coffee seedlings and the agronomic efficiency (AE) of monoammonium phosphate (MAP) coated with anionic polymers and Mg in comparison with other phosphate fertilizer technologies. The experiment was carried out in a greenhouse in 20 L pots. Two five-month-old coffee seedlings were transplanted into each pot. The experimental design was completely randomized with three replicates. The following treatments, applied at a dose corresponding to 20 g pot-1 of P2O5, were carried out: MAP; MAP coated with anionic polymers (Policote Phós®); MAP coated with anionic polymers+Mg (Policote Phós_Mg®); Top-Phós®; and Agrocote®. A control (without P) was prepared. Plant height; leaf area; dry mass of leaves, stems, and roots; total dry mass; shoot/root ratio; specific leaf weight; P and Mg content in plants and their availability in the soil after cultivation and efficiency indicesof the phosphate fertilization treatment were evaluated. The recovery of applied P and the agronomic efficiency of phosphate fertilizers was found to increase in the following order: MAP = Top-Phós® = Agrocote® |
| Databáze: | OpenAIRE |
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