Copper and zinc fractions in the profile of an Inceptisol cultivated with apple in southern Brazil
AUTOR(ES)
Brunetto, Gustavo, Benedet, Lucas, Ambrosini, Vítor Gabriel, Comin, Jucinei Jose, Melo, George Wellington Bastos de, Santos, Matheus Ademir dos, Lourenzi, Cledimar Rogério, Loss, Arcangelo, Belli Filho, Paulo, Schmitt, Djalma Eugênio, Couto, Rafael
FONTE
Bragantia
DATA DE PUBLICAÇÃO
16/04/2018
RESUMO
ABSTRACT The present study aimed to evaluate the accumulation and distribution of Cu and Zn fractions in the profile of an Inceptisol by application of fungicides with a previous history of apple cultivation in southern Brazil. Stratified soil samples (0.0 – 0.025 m, 0.025 –0.050 m, 0.05 – 0.10 m, 0.10 – 0.15 m, 0.15 – 0.20 m and 0.20 – 0.40 m depth) were collected in two apple orchards (8 years old and 18 years old), and in a native pasture area adjacent to the orchards. The soil was subjected to analysis of physical and chemical properties and to chemical fractionation of Cu and Zn. The fractions of soluble, exchangeable, organic, residual and total Cu and Zn accumulated in the topsoil (0.0 – 0.025 m) of the orchards, being higher in the orchard cultivated for 18 years. Most Cu, especially in the topsoil of the 18 years old orchard, accumulated in the less stable organic fraction, which can potentiate toxicity to plants and transfer Cu e Zn to ground water. In deeper layers, Cu was also distributed in the residual and mineral fractions, which are more stable. Most Zn in the soil of the apple orchards was distributed in the mineral and residual fractions, which have low mobility and low potential toxicity to plants.
Documentos Relacionados
- Phosphorus fractions in apple orchards in southern Brazil
- Labile copper and zinc fractions under different salinity conditions in a shipyard area in the patos lagoon estuary, south of Brazil
- Profile of blood donations with a positive serology in Southern Brazil
- Performance of new apple rootstocks for Gala variety in Southern Brazil
- Evaluation of trace metals (cadmium, chromium, copper and zinc) in tissues of a commercially important fish (Leporinus obtusidens) from Guaíba Lake, Southern Brazil