PHOSPHORUS FERTILIZATION AND SOIL TEXTURE AFFECT POTATO YIELD
Potato (Solanum tuberosum L.) is a nutritionally demanding crop, and phosphorus (P) is a nutrient that exerts a large effect on tuber yield. However, as the availability of P is influenced by soil texture, there are doubts about how P supplementation affects the growth and yield of potato plants in...
| Autores: | , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2018 |
| País: | Brasil |
| Institución: | Universidade Federal Rural do Semi-Árido (UFERSA) |
| Repositorio: | Revista Caatinga |
| Idioma: | inglés |
| OAI Identifier: | oai:ojs.periodicos.ufersa.edu.br:article/6601 |
| Acceso en línea: | https://periodicos.ufersa.edu.br/caatinga/article/view/6601 |
| Access Level: | acceso abierto |
| Palabra clave: | Solanum tuberosum. Sandy soil. Clayey soil. Dry matter. Phosphorus accumulation. Solanum tuberosum. Solo arenoso. Solo argiloso. Matéria seca. Acúmulo de fósforo. |
| Sumario: | Potato (Solanum tuberosum L.) is a nutritionally demanding crop, and phosphorus (P) is a nutrient that exerts a large effect on tuber yield. However, as the availability of P is influenced by soil texture, there are doubts about how P supplementation affects the growth and yield of potato plants in different soil textures. Thus, here we aimed to evaluate the effect of P fertilization and soil texture on the nutrition, growth, tuber yield, and P use efficiency (PUE) of potato plants. The experiment was conducted under greenhouse conditions in a randomized block design with a 4×2 factorial scheme and five replications. The treatments were represented by four P rates (10, 50, 100, and 200 mg dm-3 P) and two soil textures (clayey and sandy). The concentrations of P, Ca, and Mg in the leaves were higher in sandy soil, and P rates increased the concentrations of N, P, and Ca in the leaves of potato plants. Phosphorus fertilization increased plant growth, the amount of P accumulated in the shoot, and tuber yield in both soils; this trend was stronger in the potato cultivated in the clayey soil than in the sandy soil. The applied-PUE was not affected by soil texture. In the potato cultivated in the sandy soil, the taken up-PUE was reduced due to the decrease in dry matter production and an increase in P concentration in the organs of the plant with higher P fertilizer rates. |
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