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Microbial activity, arbuscular mycorrhizal fungi and inoculation of woody plants in lead contaminated soil BJM
Gattai,Graziella S; Pereira,Sônia V; Costa,Cynthia M. C; Lima,Cláudia E. P; Maia,Leonor C.
The goals of this study were to evaluate the microbial activity, arbuscular mycorrhizal fungi and inoculation of woody plants (Caesalpinia ferrea, Mimosa tenuiflora and Erythrina velutina) in lead contaminated soil from the semi-arid region of northeastern of Brazil (Belo Jardim, Pernambuco). Dilutions were prepared by adding lead contaminated soil (270 mg Kg-1) to uncontaminated soil (37 mg Pb Kg soil-1) in the proportions of 7.5%, 15%, and 30% (v:v). The increase of lead contamination in the soil negatively influenced the amount of carbon in the microbial biomass of the samples from both the dry and rainy seasons and the metabolic quotient only differed between the collection seasons in the 30% contaminated soil. The average value of the acid phosphatase...
Tipo: Info:eu-repo/semantics/article Palavras-chave: AMF; Contaminated soil; Heavy metals; Mycorrhizae; Semi-arid.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822011000300004
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Optimization of the production of mycorrhizal inoculum on substrate with organic fertilizer BJM
Coelho,Ieda R; Pedone-Bonfim,Maria VL; Silva,Fábio SB; Maia,Leonor C.
The system for production of inoculum of arbuscular mycorrhizal fungi (AMF) using sand and vermiculite irrigated with nutrient solution is promising. However, organic amendments added to the substrate can stimulate sporulation of AMF and replace the nutrient solution. The aim of this study was to maximize the production of AMF (Acaulospora longula, Claroideoglomus etunicatum, Dentiscutata heterogama and Gigaspora albida) using selected organic substrates (vermicompost, coir dust and Tropstrato) together with sand and vermiculite. The production of spores varied among the tested AMF and according to the organic source added to the substrate. The vermicompost promoted higher sporulation of A. longula in relation to the other AMF and substrates. The...
Tipo: Info:eu-repo/semantics/article Palavras-chave: AMF; Biofertilizer; Vermicomposto; Inoculum.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822014000400007
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