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| Santana, Dalva Luiz de Queiroz; Ferreira, Carlos Alberto; Martins, Emerson Gonçalves; Silva, Helton Damin da. |
| The grevilea, Grevillea robusta (Cunn), species of the Proteaceae family, native of Australia it was introduced in Brazil and in several other countries of the world, for ornamentation, wind breaks and to shade agricultural crops. In general the grevilea has few pests in its area of natural dispersion and also in Brazil. Recently a severe infestation of the cicada Aethalion reticulatum (Hemiptera: Aethalionidae) was verified in experimental plantings of grevilea’s plantation in São Miguel Arcanjo, SP. This is the first verification of A. reticulatum causing damages to G. robusta. A. reticulatum is an sap sucking insect and the damages in grevilea are similar to the observed in fruit plants. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Grevilea pests; Forest pests; Fruit cicada Pragas da grevílea; Pragas florestais; Cigarrinha das fruteiras. |
| Ano: 2011 |
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/244 |
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| Niquidet, Kurt; Stennes, Brad; van Kooten, G. Cornelis. |
| In light of the large volumes of pine killed in the Interior forests in British Columbia by the mountain pine beetle, many are keen to employ forest biomass as an energy source. To assess the feasibility of a wood biomass-fired power plant in the BC Interior it is necessary to know both how much physical biomass might be available over the life of a plant, but also its location because transportation costs are likely to be a major operating cost for any facility. To address these issues, we construct a mathematical programming model of fiber flows in the Quesnel Timber Supply Area of BC over a 25-year time horizon. The focus of the model is on minimizing the cost of supplying feedstock throughout space and time. Results indicate that over the life of the... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Forest economics; Biomass and bio-energy; Forest pests; Resource /Energy Economics and Policy; O13; Q23; Q42. |
| Ano: 2008 |
URL: http://purl.umn.edu/45476 |
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| Santana, Dalva Luiz de Queiroz; Zanol, Keti M. R.; Botosso, Paulo Cesar; Mattos, Patricia Póvoa de. |
| The injuries of Ctenarytaina spatulata Taylor, 1977, were characterized through observations in field, laboratory and greenhouse. The first injuries of C. spatulata in Eucalyptus grandis are caused during oviposition. At the point where the egg is inserted, a small black spot appears, which may grow larger, causing the bud death. The insect eliminates large amount of honeydew, accumulating on leaves and apical parts, which starts the proliferation of sooty mold, and fitopathogenic fungi. Leaves of the attacked lants become deformed, smaller than the normal ones, distorted, or with flaws among the ribs and sooty mold reducing the photosynthetic capacity. Due to damages provoked by the bites, oviposition, sooty mold accumulation and other fungi,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Forest pests; Eucalyptus pests; Exotic pests; Psyllid Pragas florestais; Pragas exóticas; Pragas do eucalipto; Psilídeo.. |
| Ano: 2011 |
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/237 |
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