Data/hora: 12/06/2024 05:28:41

Biblioteca(s): | Embrapa Florestas.
Data corrente: | 15/09/2008
Data da última atualização: | 18/09/2015
Autoria: | TONDOH, J. E.; KONÉ, A. W.; ANGUI, P.; BERNARHD-REVERSAT, F.; LORANGER-MERCIRIS, G.
Título: | Short-term legume cover crop fallows improve soil quality in humid savanna areas of Côte d'Ivoire.
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:

Although many studies have emphasized the prominent role of legume cover crops in soil fertility
and maize yield increase in sub saharian Africa, a threshold period for significant soil quality
replenishment, which is a crucial indicator of sustainable agriculture, is not clearly konwn. The
study aims at identifying indicators of rapid changes of soil quality, in the context of agronomic
valorisation of humid savannas areas of Côte d?Ivoire. Soil chemical and biological parameters
were evaluated at 6 and 12 months following legume cover crops (Mucuna pruriens, Lablab
purpureus, Pueraria phaseloides) establishment and continuous maize cropping in humid
savanna areas of Côte d?Ivoire. A principal component analysis (ACP) showed a significant
(P<0.001) segregation within treatments at 6 and 12 months after experimental set-up. Cation
exchange capacity, microbial biomass carbon, exchangeable bases, and Ca content were found
to be indicative of differences between treatments during the first 6 months of trial. More soil
variables (microbial biomass carbon, microbial biomass carbon/organic carbon ratio, earthworm
density, organic carbon, total N, carbon mineralization, Mg content and exchangeable bases)
were responsible of the segregation between legume cover crops and continuous maize cropping,
with or without fertilizer treatments, after 12 months. The study also revealed the effectiveness of
legume cover crops in improving short-term soil quality parameters. Moreover, the significant
increase in earthworm density, under legume treatments on the one hand, and the significant
correlation with some variable (total polyphenols, Ca and K contents) and index (N/P ratio) of
plant residues quality on the other hand, showed the importance of this organisms as potential
indicators of soil quality.

Thesaurus Nal: | soil quality.
Categoria do assunto: | --
Registro original: | Embrapa Florestas (CNPF)
Exemplares: | CNPF - (43566-1) - UPE - PL - -- - CD0305 -  -  - DIS