SABIIA - Sistema Aberto e Integrado de Informação em Agricultura (Sabiia)

Determination of ecologically relevant pools for soil organic matter stability in terra firme.

SAMPAIO, L.S.; CRAVO, M.; FREIRE FILHO, F. R.; ROCHA, M. M.; RIBEIRO, V. Q..

O estudo visou avaliar de forma preliminar os dados dos ensaios no município de Igarapé Açu-PA, incluindo a variabilidade genética, relação entre os componentes de produção e potencial produtivo. Foram testadas 40 linhagens de feijão-caupi, em dois ensaios: porte semi-ereto e ereto, em blocos inteiramente casualizados, com quatro repetições, em 2004 e 2005. Houve diferenças significativas entre as linhagens e anos, e interação linhagem ano para maioria dos caracteres agronômicos. A produtividade média das linhagens foi de 1.289,6kg/ha. O ano de 2004 apresentou maior precipitação e irradiação, resultando nas maiores produtividades médias. As linhagens do tipo semi-eretas mantiveram a produtividade média alta na mesma magnitude independente do ano. As...

Tipo: Artigo em anais de congresso (ALICE)

Palavras-chave: Variabilidade genética; Produtividade de grãos.

Ano: 2006

URL: http://www.alice.cnptia.embrapa.br/handle/doc/68758

Infoteca-e

Determination of ecologically relevant pools for soil organic matter stability in terra firme oxisols.

The study on soil pools identification which are sensitive to land-use changes in terra firme oxisols and yield easy to handle techniques for the evaluation of increasing te soil organic matter (SOM) porperties. For this purpose, it has studied the influence of ten different trees and annual crops on SOM properties on an oxisol near Manaus (Amazonas, Brasil). A combination of aggregate and density fractionation was found to be most suitable for physical SOM characterization. The particulate organic matter (POM, density less than 1.6g cm-3) varied by one order of magnitude between sites and could be used as a sensitive indicator of land-use changes. The obtained results are extremely important for the evaluation of the sustainability of the investigated...

Tipo: Capítulo em livro técnico (INFOTECA-E)

Palavras-chave: Oxisolo; Brasil; Amazonas; Manaus; Floresta Tropical Úmida; Matéria Orgânica; Ferralsols; Organic matter; Tropical rain forests.

Ano: 1998

URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/668404

Determination of ecologically relevant pools for soil organic matter stability in terra firme oxisols.

Tipo: Artigo em anais de congresso (ALICE)

Palavras-chave: Oxisolo; Brasil; Amazonas; Manaus; Floresta Tropical Úmida; Matéria Orgânica; Ferralsols; Organic matter; Tropical rain forests.

Ano: 1998

URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/668404

Identification of soil pools wich are sensitive to land-use changes in terra firme oxisols and yield easy to handle techniques for the evaluation of soil organic matter (SOM) properties. For this purpose, it have studied the influence of ten different trees and annual crops on SOM properties on an oxisol near Manaus.

Single tree effects on soil organic matter.

Palavras-chave: Floresta tropica umida; Uso da terra; Conservacao do solo; Desenvolvimento sustentavel; Agrofloresta; Cultivo multiplo; Solo; Materia organica; Brasil; Amazonas; Tropical rain forest; Land use; Reclamation; Sustainability; Agroforestry; Soil; Organic matter.

Ano: 1998

URL: http://www.alice.cnptia.embrapa.br/handle/doc/667693

Infoteca-e

Single tree-effects on denitrification and soil microbial biomass in agroforestry systems and natural forests of the Amazon region.

bitstream/item/180977/1/ID-3848-58-66.pdf

Tipo: Capítulo em livro técnico (INFOTECA-E)

Palavras-chave: Matéria Orgânica.

Ano: 1997

URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1093937

MENYAILO, O.; LEHMANN, J.; CRAVO, M.; ZECH, W..

The aim of the present study was to find the effect of tree species used in agroforestry system in Amazonian region and natural forests on the total biomass of heterotrophic microorganisms (BH), which is mainly responsible for CO2 emission, and on the biomass of denitrifiers (BD), which control N2O emission.

Single tree-effects on denitrification and soil microbial biomass in agroforestry systems and natural forests of the Amazon region.

Palavras-chave: Agrofloresta; Urucu; Sumaúma; Brasil; Amazonas; Manaus; Andiroba; Biomassa; Bixa Orellana; Carapa Guianensis; Carbono; Ceiba Pentandra; Conservação do Solo; Cultivo Multiplo; Cupuaçu; Dióxido de Carbono; Espécie; Fauna Edáfica; Floresta Tropical Úmida; Solo; Theobroma Grandiflorum; Eschweilera; Vismia.

Ano: 2002

URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/673217

MENYAILO, O.; LEHMANN, J.; CRAVO, M.; ZECH, W..

The present study was to find the effect of tree species (andiroba, cupuacu, Eschweilera sp, sumauma, urucu, Vismia sp)used in agroforestry system in Amazonian region (Brasil) and natural forests on the total biomass of heterotrophic microorganisms (BH), which is mainly responsible for CO2 emission, and on the biomass of denitrifiers (BD), which contro N2O emission. Both biomasses were studied using the kinetic method.Most commonly used fruits species, cupuacu and urucu (annatto) 2-3 times increased BD. The BH was also affected by tree species. We alson wanted to find relationships between the biomasses studies and soil microbial activities. The BD was negatively related to the net N mineralization and basal respiration rates, and positively to net...

Single-tree effects on soil organic matter and aggregate stability on the terra firme near Manaus.

Palavras-chave: Floresta tropical umida; Conservacao do solo; Agrofloresta; Cultivo multiplo; Bixa orellana; Urucu; Ceiba pentandra; Sumauma; Carapa guianensis; Andiroba; Eschweilera; Especie; Theobroma grandiflorum; Cupuacu; Vismia; Fauna edafica; Biomassa; Carbono; Dioxido de carbono; Brasil; Amazonas; Manaus; Soil conservation; Agroforestry; Multiple cropping; Species; Soil fauna; Carbon dioxide; Biomass.

Ano: 2000

URL: http://www.alice.cnptia.embrapa.br/handle/doc/670037

In this work was compared the influence of different tree species in monocultures, agroforestry systems and primary and secondary forest sites on soil organic matter (SOM) properties on the rerra firme near Manaus, Amazonas.

Water and nutrient fluxes as indicators for the sustainability of different land-use systems on the terra firme near Manaus.

Palavras-chave: Floresta tropical umida; Solo; Materia organica; Fertilidade do solo; Brasil; Amazonas; Tropical rain forestry; Soil; Organic matter; Soil fertility.

Ano: 1998

URL: http://www.alice.cnptia.embrapa.br/handle/doc/667735

ZECH, W.; SCHROTH, G.; TEIXEIRA, W. G.; CRAVO, M.; KAISER, K.; LEHMANN, J..

Water and nutrient for land-use systems on the terra firme near Manaus.