Effect of phosphorus fertilization on nutrient absorption and potato yield in Andisols of Costa Rica
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| Autors: | , , , , |
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| Format: | artículo original |
| Estat: | Versión publicada |
| Data de publicació: | 2024 |
| Descripció: | The effect of P additions on potato yield and nutrient absorption was studied in a Hydric Hapludands soil. P rates of 0, 150, 300, 450, and 600 kg.ha-1 of P2O5 were compared during 1 and 2 consecutive crops. Soil samples were taken before planting and after harvest; foliar samples were taken, 48 dap at flowering; aerial biomass was sampled before burning aerial biomass with chemicals, 93 dap; potato yield was estimated at harvesting, 116 dap. Tissue samples were analyzed for N, P, Ca, Mg, K, Mn, Zn, Cu, Fe, S, and B. When P was applied only to the first crop, yields were low and no residual effect of the fertilizer application was noted for any of the rates compared. The addition of P for 2 consecutive years increased yields; maximum yield obtained with 600 kg.ha-1 of P2O5 was 16.39 t.ha-1. Nutrient absorption was not affected by the P applied. Macronutrient absorption was K>>N>>Ca>P=Mg and for micronutrients Fe>>>Zn>Mn>B>>Cu. Mobile nutrients (NPK) were distributed to the tubers in 27-65%; nutrients of relative mobility, such as Cu, Mg, and Zn between 14-38%; less mobile elements (Ca, Mn, and Fe) amounted only 2-6% of the tuber weight. To maximize potato yield in Andisols, P should be applied for each crop, since the residual effect of the P-fertilizer is not enough to supply the needs of the crop in soils with high P retention capacity. |
| Pais: | Portal de Revistas UCR |
| Institution: | Universidad de Costa Rica |
| Repositorio: | Portal de Revistas UCR |
| Idioma: | Español |
| OAI Identifier: | oai:portal.ucr.ac.cr:article/6734 |
| Accés en línia: | https://revistas.ucr.ac.cr/index.php/agrocost/article/view/6734 |
| Paraula clau: | Solanum tuberosum fertilización al suelo fósforo Andisoles Costa Rica soil fertilization phosphorus Andisols |