Data/hora: 15/06/2024 18:10:20

Biblioteca(s): | Embrapa Florestas.
Data corrente: | 22/09/2008
Data da última atualização: | 22/09/2008
Autoria: | VILLENAVE, C.; RABARY, B.; CHOTTE, J. L.; BLANCHAT, E.; DJIGA, D.
Título: | The use of nematofauna as indicator of soil ecosystem functionnng in long term experiment on tillage and cover crops in Madagascar.
Ano de publicação: | 2008
Fonte/Imprenta: | In: INTERNATIONAL COLLOQUIUM ON SOIL ZOOLOGY, 15; INTERNATIONAL COLLOQUIUM ON APTERYGOTA, 12., 2008, Curitiba. Biodiversity, conservation and sustainabele management of soil animal: abstracts. Colombo: Embrapa Florestas. Editors: George Gardner Brown; Klaus Dieter Sautter; Renato Marques; Amarildo Pasini. 1 CD-ROM.
Idioma: | Inglês

Conteúdo:

Soil micro-organisms and invertebrates through their activities driven by key species or by
complex assemblages of organisms realize several life-supporting functions such as the
decomposition of organic matter, the mineralization and recycling of nutrients, the regulation of
diseases and pests, the formation of soil structure. In conventional agriculture most of these
functions are achieved through the inputs (structure and weed control: tillage -and herbicides-,
availability of nutrients: mineral fertilizers, control of pests and disease: pesticides). In integrated
or organic agriculture, parts of these functions are achieved by the biological actors. The aim of
our study was to determine how soil nematofauna reflect the soil biological functioning in different
cropping management systems.
During three years, we analyzed the effect of no-tillage and permanent cover crops on nematode
functional diversity in two long-term (15 years and 9 years) trials in Antsirabé (Madagascar)
under a subtropical climate (16 °C, 1 200 mm y-1) and in a clayey soil. Simultaneously to soil
nematofauna, other soil organisms (micro-organisms and macrofauna) were studied, as well
as soil physico-chemical parameters (mineral Nitrogen, C and N content, Nirs spectrum), and
crop parameters (yields, quality of the litters). The potential of indicators of soil functioning of
different nematode functional groups and indices will be discussed with regard to the information
given by other parameters.

Categoria do assunto: | --
Registro original: | Embrapa Florestas (CNPF)
Exemplares: | CNPF - (43650-1) - UPE - PL - -- - CD0305 -  -  - DIS