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| KAINER, K. A.; WADT, L. H. de O.; GOMES-SILVA, D. A. P.; CAPANU, M.. |
| We investigated the association between lianas and Bertholletia excelsa (Brazil nut), along-lived, emergent tree of significant ecological and economic importance in Amazonia. Our objectives were: (1) to determine the relationship between crown liana load and liana number, basal area, and origin in relation to the B. excelsa host; and (2) to determine the relationship between liana load and B. excelsa fruit and nut production, diameter growth, and crown form, position and area. One hundred and forty trees (>50 cm dbh) were selected with representatives of 10 diameter classes and four liana load categories. To quantify fruit and nut production, fruit counts and nut fresh weights per tree were measured in 2002 and 2003, and annual diameter growth was... |
| Tipo: Artigo de periódico |
Palavras-chave: Castanha do brasil; Liana; Plantas parásitas.; Nuez del Brasil; Malezas; Competencia ecológica; Castanha do pará; Bertholletia excelsa; Erva daninha; Competição biológica; Brazil nuts; Parasitic plants; Weeds; Lianas; Ecological competition.. |
| Ano: 2006 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1036958 |
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| ANDRADE, C. M. S. de; FONTES, J. R. A.; OLIVEIRA, T. K. de; FARINATTI, L. H. E.. |
| Nesta publicação, descreve-se um método de reforma de pastagens degradadas com alta infestação de capim-navalha, associando o uso de herbicida pré-emergente com o plantio consorciado de gramíneas forrageiras com o milho. Inicialmente, será feita uma descrição dos aspectos biológicos do capim-navalha, das características do herbicida pré-emergente atrazina e dos sistemas de integração lavoura-pecuária. Posteriormente, serão apresentadas as principais etapas do método proposto, incluindo os coeficientes técnicos e os resultados da validação realizada em Rio Branco, AC. |
| Tipo: Circular Técnica (INFOTECA-E) |
Palavras-chave: Capim Navalha; Paspalum virgatum; Pasture recovery; Recuperación de pastizales; Herbicida pré-emergente; Rio Branco (AC); Acre; Amazônia Ocidental; Western Amazon; Amazonia Occidental; Plantas parásitas; Pastizales; Redimiento de los cultivos.; Escarda preemergente; Malezas herbáceas; Pastagem; Rendimento; Erva daninha; Gramínea; Capim; Herbicida; Pastures; Crop yield; Parasitic plants; Grass weeds; Preemergent weed control.. |
| Ano: 2012 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/948671 |
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| Arruda,Rafael; Lunardelli,Caroline; Kitagawa,Clóvis; Caires,Claudenir Simões; Teodoro,Grazielle Sales; Mourão,Fabiana Alves. |
| Mistletoe can have a major impact on the fitness of the host plant. If there is more than one species of mistletoe on the same host tree, the overall impact might be amplified. We report the occurrence of more than one species of mistletoe on the same host tree. Although it is not a rule in the field, to our knowledge, there have been no studies of this topic. In most cases, two species of mistletoe were recorded on the same host tree, although we recorded three species of mistletoe on one occasion. This demonstrates that different species of mistletoe can be compatible with the same host species. Therefore, compatibility (structural and physiological) might be an important factor for the occurrence of mistletoe. Recent studies have shown that if the... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Parasite-host relationship; Compatibility; Specificity; Parasitic plants; Red Queen hypothesis. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000100021 |
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