High coffee population density to improve fertility of an oxisol

Pesquisa Agropecuária Brasileira

Marcos Antonio Pavan¹  Júlio César Dias Chaves¹  Rubens Siqueira¹  Armando Androcioli Filho¹  Arnaldo Colozzi Filho¹  Elcio Liborio Balota¹ 

[1] ,Instituto Agronômico do ParanáLondrina PR ,Brazil

关键词: Coffea arabica;    acid soil;    tree spacing;    Coffea arabica;    solos ácidos;    espaçamento;   

DOI  :  10.1590/S0100-204X1999000300018

来源: SciELO

【 摘 要 】

The objective of this work was to evaluate the effect of coffee (Coffea arabica L.) population densities on the chemical and microbiological properties of an Oxisol. The work was carried out on soil samples of 0-20 cm depth originated from an experimental site which had been used for coffee tree spacing studies during 15 years, in Paraná State, Brazil. Eight coffee tree populations were evaluated: 7143, 3571, 2381, 1786, 1429, 1190, 1020, and 893 trees/ha. Increasing plant population increased soil pH, exchangeable Ca, Mg, K, extractable P, organic carbon, moisture content and coffee root colonization by vesicular arbuscular mycorrhizal fungi, and decreased exchangeable Al and microbial biomass. Such results were attributed to better erosion control, improved plant residue management and nutrient cycling, and decreased leaching losses. Increasing coffee tree population per unit of area has shown to be an important reclamation recuperation strategy for improving fertility of the acid soils in Paraná, Brazil.

【 授权许可】

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