| Texto completo | |
| Autor(es): |
Fernandes, Adalton M.
;
Soratto, Rogerio P.
Número total de Autores: 2
|
| Tipo de documento: | Artigo Científico |
| Fonte: | AMERICAN JOURNAL OF POTATO RESEARCH; v. 93, n. 4, p. 404-414, AUG 2016. |
| Citações Web of Science: | 7 |
| Resumo | |
Knowledge on phosphorus (P) response of main potato cultivars is essential to rational fertilization management and maximize yield, mainly in tropical soils that usually have low P availability. An experiment was conducted to evaluate the effect of P fertilization rates (0, 125, 250, 500, and 1000 kg P2O5 ha(-1)) on leaf nutrient concentrations, tuber yield and size distribution, as well as applied P-use efficiency (APUE) in the potato cultivars Agata and Mondial. The results indicated that it is not necessary to evaluate the P-nutritional status and adjust P recommendations on a cultivar basis because P fertilization resulted in similar increases in the leaf P concentration of both cultivars, and the cultivars responded to the same P rate (500 kg P2O5 ha(-1)). However, Mondial had a higher APUE and was more responsive than Agata to the same P rate. A leaf P concentration of 2.9 g kg(-1) was superior to 2.5 g kg(-1) as the lower limit of the P sufficiency range for Agata and Mondial. (AU) | |
| Processo FAPESP: | 10/04987-6 - Adubação fosfatada em cultivares de batata (Solanum tuberosum L.) |
| Beneficiário: | Adalton Mazetti Fernandes |
| Modalidade de apoio: | Bolsas no Brasil - Doutorado |