|
|
|
| Registros recuperados: 10 | |
|
| |
|
| |
|
| |
|
| |
|
|
| Moser,Thomas; Frankenbach,Silja. |
| The objective of this work was to clarify whether the method to extract nematodes from European soils is suitable for forest soils and litter in the eastern of Paraná state, Brazil, and whether nematode abundance differs between sites with different ecosystems and levels of human interference. The study sites were situated in the coastal area of the Serra do Mar, near the town of Antonina, in Eastern Paraná, Brazil. Cobb's sieving and decanting method was more appropriate than ISO method, since extraction efficiency was higher and intra-sample variability was significantly lower. In order to achieve an extraction efficiency higher than 90%, Cobb's method was modified. For the extraction of nematodes from litter, the Baermann funnel, with an extraction time... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Agroforestry system; Bioindicator; Extraction method; Nematoda. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2009000800027 |
| |
|
| |
|
| |
|
|
| Oliveira,Arlem Nascimento de; Oliveira,Luiz Antonio de. |
| The seasonal dynamics of Arbuscular Mycorrhizal Fungi (AMF) was investigated in the rhizosphere of two fruit species in a terra firme (upland) ecosystem in Central Amazonia. Two host species (Theobroma grandiflorum and Paullinia cupana) and nine sampling months (August, September and December/1998, February, April, May and December/1999, February and May/2000) were studied in a completely randomized design, with five replications, set in a 2 x 9 factorial experiment. Soil (0-20 cm depth) and root samples were collected between August 1998 and May 2000. The mean percent colonization of AMF for both species reached maximal values in February and May 2000 (rainy season). In April and May 1999, February and May 2000 (rainy season) the highest AMF spore numbers... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Arbuscular mycorrhizal fungi; Theobroma grandiflorum; Paullinia cupana; Agroforestry system; Central Amazonia. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822005000300011 |
| |
|
|
| Carvalho,F.P.; Melo,C.A.D.; Machado,M.S.; Dias,D.C.F.S.; Alvarenga,E.M.. |
| This study aimed to evaluate the allelopathic effect of various concentrations of an aqueous extract of eucalyptus leaves on Urochloa decumbens and Panicum maximum seeds. The extract was prepared from Eucalyptus urograndis leaves that were milled and mixed with distilled water in a 1:9 milled leaves: water ratio to obtain an extract with a defined concentration of 100%. In addition, dilutions of 50%, 25% and 12.5% were prepared, and a 0% dilution was used as a control. The experiment followed a completely randomized design, with four replicates, each of 50 seeds of U. decumbens and 50 seeds of P. maximum, arranged on filter paper moistened with each concentration of extract in a Gerbox plastic box. The results demonstrated the allelopathic potential of E.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Eucalyptus urograndis; Urochloa decumbens; Panicum maximum; Agroforestry system; Germination; Seedling performance. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582015000200193 |
| |
|
| |
| Registros recuperados: 10 | |
|
|
|
