| Full text | |
| Author(s): |
Fernandes, Adalton M.
;
Soratto, Rogerio P.
Total Authors: 2
|
| Document type: | Journal article |
| Source: | AMERICAN JOURNAL OF POTATO RESEARCH; v. 93, n. 4, p. 404-414, AUG 2016. |
| Web of Science Citations: | 7 |
| Abstract | |
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) | |
| FAPESP's process: | 10/04987-6 - Phosphorus fertilization in potato cultivars (Solanum tuberosum L.) |
| Grantee: | Adalton Mazetti Fernandes |
| Support Opportunities: | Scholarships in Brazil - Doctorate |