Earthworm communities in organic and conventional coffee cultivation Comunidades de minhocas em cultivo de café orgânico e convencional
subject: Diversity, Oligochaeta, biomass, biomassa, conventional cultivation, cultivo convencional, cultivo orgânico, densidade populacional, diversidade, organic cultivation, population density
description: 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.O objetivo deste trabalho foi avaliar o efeito do cultivo de café orgânico e convencional sobre a biomassa, densidade populacional e diversidade de minhocas em Lerroville, distrito de Londrina, Paraná. A comunidade de minhocas foi avaliada em três áreas de cultivo orgânico (CO1, CO2, CO3), duas áreas em cultivo convencional (CC1 e CC2) e um fragmento de mata nativa (MT). O solo das áreas CO1, CC1 e MT foi classificado como Nitossolo Vermelho e o solo das áreas CO2, CO3 e CC2 como Latossolo Vermelho. Oito amostras foram coletadas em cada área, em dois períodos, inverno e verão, pelo método do Tropical Soil Biology and Fertility (TSBF), na camada 0-20 cm. As minhocas foram separadas manualmente e preservadas em formol 4%, e, depois, foram pesadas, contadas e identificadas. A biomass…
creator: Ricardo Ralisch, Marie Luise Carolina Bartz, George Gardner Brown, Amarildo Pasini, Juliana de Oliveira Fernandes, Pierre Curmi, Julie Dorioz
source: Pesquisa Agropecuária Brasileira
publisher: Embrapa Informação Tecnológica
date: 2009
relation: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2009000800019
coverage: Agriculture (General)