Earthworm communities in organic and conventional coffee cultivation

Pesquisa Agropecuária Brasileira

Marie Luise Carolina Bartz²  George Gardner Brown¹  Amarildo Pasini²  Juliana De Oliveira Fernandes²  Pierre Curmi¹  Julie Dorioz¹  Ricardo Ralisch² 

[1] ,Universidade Estadual de Londrina Departamento de Agronomia Londrina PR ,Brazil

关键词: biomass;    conventional cultivation;    diversity;    Oligochaeta;    organic cultivation;    population density;    biomassa;    cultivo convencional;    diversidade;    Oligochaeta;    cultivo orgânico;    densidade populacional;   

DOI  :  10.1590/S0100-204X2009000800019

来源: SciELO

【 摘 要 】

The objective of this work was to evaluate the effect of organic and conventional coffee crops on biomass, population density and diversity of earthworms, in Lerroville, district of Londrina County, Paraná state, Brazil. Earthworm communities were sampled in three areas with organic coffee cultivation (CO1, CO2 and CO3), two with conventional coffee (CC1 and CC2), and a native forest fragment (MT). The soil of the areas CO1, CC1, and MT was classified as Nitossolo Vermelho (Rhodic Kandiudox), while CO2, CO3, and CC2 were on Latossolo Vermelho (Rhodic Hapludox). Eight samples were taken in each area on two occasions, winter and summer, using the Tropical Soil Biology and Fertility (TSBF) method in the 0-20 cm soil layer. The earthworms were handsorted and preserved in 4% formaldehyde, and were later weighed, counted and identified. The highest earthworm biomass, both in winter and summer, occurred in the CO3 area. For population density, the higher numbers of individuals were found in CO1 and CO3. The highest number of species was identified in the organic cultivation. The adoption of organic practices in coffee cultivation favored the diversity, density and biomass of earthworm communities.

【 授权许可】

CC BY   
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