Bibliographic Details
| Title: |
Potato yield and phosphorus nutrition using humic substances in two soil textures |
| Authors: |
Martins, Jéssyca Dellinhares Lopes, Soratto, Rogério Peres, Fernandes, Adalton Mazetti |
| Source: |
Pesquisa Agropecuária Brasileira. January 2020 55 |
| Publisher Information: |
Embrapa Secretaria de Pesquisa e Desenvolvimento; Pesquisa Agropecuária Brasileira, 2020. |
| Publication Year: |
2020 |
| Subject Terms: |
Solanum tuberosum, humic acid, mineral nutrition, soil organic matter, soil texture |
| More Details: |
The objective of this work was to evaluate the effect of humic substances (HS) and phosphorus fertilizer on the growth, P uptake, tuber yield, fertilizer P recovery (FPR), and applied P-use efficiency (APUE) of potato (Solanum tuberosum) cultivated in a sandy and in a clayey soils. In both soils, the experiment was carried out in a randomized complete block design, in a 4×3 factorial arrangement, with four replicates. The treatments consisted of four P rates (0, 100, 200, and 400 kg ha-1 P2O5) and of three HS rates (0, 50, and 300 L ha-1). Phosphate fertilization increased the P uptake and tuber yield of potato in both soils. Soil characteristics conditioned the effect of the addition of HS. In the sandy soil, with a lower content of organic matter (OM) than the clayey soil, the addition of HS increases the P uptake and FPR, besides providing a greater tuber yield and APUE, especially under the P absence or with the application of a reduced P rate. In the clayey soil, HS does not affect the response of potato to P fertilization. |
| Document Type: |
article |
| File Description: |
text/html |
| Language: |
English |
| ISSN: |
0100-204X |
| DOI: |
10.1590/s1678-3921.pab2020.v55.01703 |
| Access URL: |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2020000102200 |
| Rights: |
info:eu-repo/semantics/openAccess |
| Accession Number: |
edssci.S0100.204X2020000102200 |
| Database: |
SciELO |
