4 results

Phosphate fertilization strategies and placement effects on grain crop yields in subtropical no-till Oxisols

Andria Paula Lima ORCID logo , Sandra Mara Vieira Fontoura ORCID logo , Renato Paulo de Moraes ORCID logo , Cimélio Bayer ORCID logo , Luke Gatiboni ORCID logo , Tales Tiecher ORCID logo

06/Aug/2025

ABSTRACT Subtropical Oxisols have a high phosphate adsorption capacity and consequently lower phosphorus (P) availability. Therefore, correct management of phosphate fertilization in grain crop rotations is essential to increase the P-use efficiency and minimize potential environmental impacts. This study aimed to evaluate, in soils with medium and high initial P level, fertilization strategies (crop and system fertilization) and placement’s effects (banded P and broadcast) on soil available P, crop yield, and P use efficiency. Two field trials were installed on […]

Visual Abstract

Sewage sludge-based organomineral fertilizer improves phosphorus efficiency in Urochloa brizantha

Andre Luiz de Freitas Espinoza ORCID logo , João Henrique Silva da Luz ORCID logo , Tiago Tezotto ORCID logo , Paulo Sergio Pavinato ORCID logo

17/Jun/2025

ABSTRACT Sewage sludge (SS) from wastewater treatment has reasonable phosphorus (P) levels, which could be used as fertilizer in agriculture. However, SS-P content is lower than mineral fertilizers, which limits its operational application. The blend of organic and mineral material can increase the P content, formulating organomineral fertilizers (OMF) with higher P levels, enabling agricultural use. This study aimed to assess the agronomic efficiency and residual effect of organomineral fertilizers derived from SS as phosphorus sources for Urochloa brizantha. A […]

Visual Abstract

Influence of soil texture and mineralogy on phosphorus retention in cerrado oxisols under pasture

Diogo Néia Eberhardt, Pedro Rodolfo Siqueira Vendrame, Thierry Becquer, Maria de Fátima Guimarães

01/Jun/2008

Pastures cover nearly 50 million hectares in the Cerrado region. The Oxisols, which cover approximately half this area, are highly weathered soils composed mainly of kaolinite, iron and aluminum oxides. Iron and aluminum oxides have a great influence on the retention of phosphorus (P) in these soils. The aim of this study was to quantify the total phosphorus levels, as well as P availability and retention in Oxisols under pasture in the Cerrado region and to relate the data with […]

Preferential forms of phosphorus accumulation in soils cultivated with sugar-cane in northeastern Brazil

M. S. B. Araújo, I. H. Salcedo

01/Dec/1997

The objective of this work was to quantify the main forms of P derived from fertilizer in soils of varying physical and chemical properties, cultivated with sugar-cane, in Pernambuco. Soils from 11 commercial plantations were sampled following the harvest of the plant-cane (Jan. 1994), that had been fertilized in the furrow 18 months before. To find samples with fertilizer-derived P, a pit was opened perpendicular to the plant line and 28 soil samples were taken with the aid of a […]