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| Registros recuperados: 187 | |
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| CHOUDHURY, M. M.. |
| As sementes, estacas, bulbos, tubérculos, etc., são órgãos de propagação vegetal e eficientes veículos de disseminação de fitopatógenos em campos agrícolas. Como as sementes contribuem com aproximadamente 90% para a propagação das culturas, muitos fungos, bactérias, virus e alguns fitonematóides podem apresentar-se associados as mesmas, causando severos danos as culturas. Estes fitopatógenos, em condições favoraveis, sobrevivem nas sementes de um ano para outro; ou por período mais longo durante o armazenamento. São apresentados no trabalho os danos causados por sementes infectadas ou contaminadas, os meios de disseminação de fitopatógenos pelas sementes e como evitar a introdução de doenças na região. Com relação a colheita, dois aspectos básicos devem... |
| Tipo: Comunicado Técnico (INFOTECA-E) |
Palavras-chave: Propagação; Seed; Diseases; Propagation; Disease.; Planta; Doença; Semente.. |
| Ano: 1982 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/131789 |
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| Arzul, Isabelle; Miossec, Laurence; Blanchet, Estelle; Garcia, Celine; Joly, Jean-pierre; Francois, Cyrille; Berthe, Franck. |
| Bonamiosis was first reported in association with mass mortality of flat oysters, Ostrea edulis, in June 1979 in L'Ile Tudy, Brittany. The disease rapidly spread to all of the oyster farming areas in France but also in other European countries. The French flat oyster production, which already suffered from another protozoan disease, marteiliosis, decreased from 5500 mt in 1979 to less than 2000 mt after 1980. In 2001, about 350 French farms sell 1650 mt of flat oysters. This production mainly relies on natural spat collection which specially occurs in Quiberon bay. One third of this spat is transferred from South to North Brittany for further growth. Quiberon bay constitutes an interesting site regarding the surveillance of bonamiosis because of the... |
| Tipo: Text |
Palavras-chave: Detection; Bonamia ostreae; Protozoan; Diseases; Pathology; Ostrea edulis; Oysters. |
| Ano: 2005 |
URL: http://archimer.ifremer.fr/doc/2005/acte-3314.pdf |
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| Carnielli-Queiroz,Lorena; Fernandes,Patricia Machado Bueno; Fernandes,Antônio Alberto Ribeiro; Ventura,José Aires. |
| Abstract Pineapple (Ananas comosus var. comosus) fusariosis is an economically important fungal disease affecting the plant and its fruit. A rapid and reliable diagnosis is the base of integrated disease management practices. Fusariosis has resulted in quarantines for pineapple products in Central America, Africa and Asia. Difficulties diagnosing and correctly identifying the fungus Fusarium guttiforme, agent of the pineapple fusariosis, have led to the search for new methodologies, and for this we developed a new reliable molecular method to detect it. For diagnostic purposes, real-time PCR of elongation factor gene 1-α (ef1) was used to rapidly, specifically and sensitively diagnose F. guttiforme. A pathogenicity test was conducted with slips of the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Diagnostic; Diseases; Quarantine; Real-time PCR. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132019000100219 |
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| Nelson, Gerald C; University of Illinois; gnelson@uiuc.edu; Bennett, Elena; McGill University;; Berhe, Asmeret A; University of California at Berkeley;; Cassman, Kenneth; University of Nebraska;; DeFries, Ruth; University of Maryland;; Dietz, Thomas; Michigan State University;; Dobermann, Achim; University of Nebraska;; Dobson, Andrew; Princeton University;; Janetos, Anthony; Joint Global Change Research Institute;; Levy, Marc; Columbia University;; Nakicenovic, Nebojsa; Vienna University of Technology;; O'Neill, Brian; International Institute for Applied Systems Analysis;; Norgaard, Richard; University of California at Berkeley;; Petschel-Held, Gerhard; ;; Ojima, Dennis; Colorado State University;; Pingali, Prabhu; FAO;; Watson, Robert; World Bank;; Zurek, Monika; FAO;. |
| This paper provides an overview of what the Millennium Ecosystem Assessment (MA) calls “indirect and direct drivers” of change in ecosystem services at a global level. The MA definition of a driver is any natural or human-induced factor that directly or indirectly causes a change in an ecosystem. A direct driver unequivocally influences ecosystem processes. An indirect driver operates more diffusely by altering one or more direct drivers. Global driving forces are categorized as demographic, economic, sociopolitical, cultural and religious, scientific and technological, and physical and biological. Drivers in all categories other than physical and biological are considered indirect. Important direct drivers include changes in climate,... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Ecosystem services; Drivers of change; Direct drivers; Indirect drivers; Demographic drivers; Economic drivers; Sociopolitical drivers; Cultural and religious drivers; Scientific and technological drivers; Physical and biological drivers; Climate change; Plant nutrient use; Land conversion; Diseases; Invasive species. |
| Ano: 2006 |
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| De Montaudouin, Xavier; Arzul, Isabelle; Caill-milly, Nathalie; Khayati, Alice; Labrousse, Jean-michel; Lafitte, Céline; Paillard, Christine; Soudant, Philippe; Goulletquer, Philippe. |
| In 1972, France underwent an oyster (Crassostrea angulata) crisis and urgently needed to diversify its aquaculture. Thus, Asari clam (Ruditapes philippinarum) was introduced at that time for aquaculture purpose, concomitantly with the introduction of Pacific oyster (Crassostrea gigas). All Asari clam adults and spat originated from the same area (Puget Sound, WA, USA). After a promising start and the implementation of a national Research & Development program, Asari clam culture rapidly faced a series of concomitant handicaps: firstly, in spite the fact that cultural practices were optimized and locking points addressed, leasing ground availability was limited during the 1980s’ due to certain reluctance from oyster farmers to share their leases and/or... |
| Tipo: Text |
Palavras-chave: Ruditapes philippinarum; France; Aquaculture; Professional fishing; Diseases; Environmental stressors. |
| Ano: 2016 |
URL: http://archimer.ifremer.fr/doc/00366/47767/47817.pdf |
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| Registros recuperados: 187 | |
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