| Full text | |
| Author(s): |
Camila Prado Cenciani de Souza
[1]
;
Cleide Aparecida de Abreu
[2]
;
José Francisco da Cunha
[3]
;
Geraldo Magela da Costa
[4]
;
Cristiano Alberto de Andrade
[5]
Total Authors: 5
|
| Affiliation: | [1] Instituto Agronômico de Campinas. Centro de Solos e Recursos Agroambientais - Brasil
[2] Instituto Agronômico de Campinas. Centro de Solos e Recursos Agroambientais - Brasil
[3] Tec-Fértil Comércio, Representação e Serviços Ltda - Brasil
[4] Universidade Federal de Ouro Preto. Departamento de Química - Brasil
[5] Empresa Brasileira de Pesquisa Agropecuária - Brasil
Total Affiliations: 5
|
| Document type: | Journal article |
| Source: | Revista Brasileira de Ciência do Solo; v. 39, n. 2, p. 553-562, 2015-04-00. |
| Abstract | |
Alternative copper (Cu) sources could be used in fertilizer production, although the bioavailability of copper in these materials is unknown. The objective of this study was to evaluate the extractants neutral ammonium citrate (NAC), 2 % citric acid, 1 % acetic acid, 10 % HCl, 10 % H2SO4, buffer solution pH 6.0, DTPA, EDTA, water, and hot water in the quantification of available Cu content in several sources, relating them to the relative agronomic efficiency (RAE) of wheat grown in a clayey Latossolo Vermelho eutrófico (Oxisol) and Neossolo Quartzarênico (Typic Quartzipsamment). Copper was applied at the rate of 1.5 mg kg-1 as scrap slag, brass slag, Cu ore, granulated copper, and copper sulfate. The extractants 10 % HCl, 10 % H2SO4, and NAC extracted higher Cu concentrations. The RAE values of brass slag and Cu ore were similar to or higher than those of Cu sulfate and granulated Cu. Solubility in the 2nd NAC extractant, officially required for mineral fertilizers with Cu, was lower than 60 % for the scrap slag, Cu ore, and granulated copper sources. This fact indicates that adoption of the NAC extractant may be ineffective for industrial by-products, although no extractant was more efficient in predicting Cu availability for wheat fertilized with the Cu sources tested. (AU) | |
| FAPESP's process: | 10/04076-3 - Copper and Zinc Availability in Mineral Fertilizers |
| Grantee: | Camila Prado Cenciani de Souza |
| Support Opportunities: | Scholarships in Brazil - Master |
| FAPESP's process: | 09/01946-0 - Cooper and zinc availability in inorganic fertilizers |
| Grantee: | Cleide Aparecida de Abreu |
| Support Opportunities: | Regular Research Grants |