Consulta: subjectFacets:"Damage"
Registros recuperados: 51
Data/hora: 11/06/2024 02:21:55

Estudio del patosistema de la Pitahaya hylocereus spp. (A. Berger, Britton &amp; Rose) en Tepoztlán, Morelos.
Provedor de dados: 32
Autores: Ramírez Delgadillo, Juan José.
La pitahaya es una cactácea que se cultiva en zonas con clima tropical, subtropical o  semiárido de México. Tres especies tienen importancia económica como frutales. En Tepoztlán, Morelos, se encontraron plantas con síntomas causados por patógenos y daño por insectos. Debido a la importancia actual y potencial del cultivo y la incidencia de plagas y patógenos, se realizó el presente estudio con el objetivo de identificar taxonómicamente y describir daños de los principales agentes fitosanitarios asociados Hylocereus spp. Durante 2006-2008 se recolectaron mensualmente estructuras vegetativas y reproductoras dañadas; de 2007-2010 se aislaron e identificaron microorganismos (22± 1.5°C) e insectos (25 ± 1.5°C, 45 % HR y fotoperiodo 14:10)  en laboratorio. En...
Palavras-chave: Plagas; Fitopatógenos; Taxonomía; Daños; Insectos; Hongos; Pitahaya; Pests; Phytopathogens; Taxonomy; Damage; Insects; Fungus; Doctorado; Fitopatología.
Ano: 2011
URL: http://hdl.handle.net/10521/356

Relación del ácaro Polyphagotarsonemus latus (BANKS) y papaya Ringspot Virus (JENSEN) en la reducción foliar de Carica papaya cv Maradol.
Provedor de dados: 32
Autores: Alcántara Jiménez, José Ángel.
Polyphagotarsonemus latus es una especie cosmopolita que afecta diferentes cultivos tanto en áreas templadas como tropicales. El principal daño ocasionado por esta especie es la reducción o deformación de hojas jóvenes, brotes, frutos y flores. En papayo, el daño en hojas causado por este ácaro es conocido como "mano de chango" porque el área foliar de las hojas de papayo se reduce casi hasta las nervaduras, simulando los dedos de un mono. Este daño es similar al causado por Papaya Ringspot Virus (PRSV-P). Debido a que P. latus y PRSV-P causan daños similares a las hojas de papayo, el objetivo general de esta investigación fue estudiar la relación que existe entre el ácaro P. latus y PRSV-P en la reducción foliar de Carica papaya cv Maradol roja. Tres...
Palavras-chave: Papayo; Area foliar; Síntomas; Relación ácaro-virus; Leaf area; Damage; Virus-mite relationship; Doctorado; Fruticultlura.
Ano: 2010
URL: http://hdl.handle.net/10521/238

Relación del ácaro Polyphagotarsonemus latus (BANKS) y papaya Ringspot Virus (JENSEN) en la reducción foliar de Carica papaya cv Maradol.
Provedor de dados: 32
Autores: Alcántara Jiménez, José Angel.
Polyphagotarsonemus latus es una especie cosmopolita que afecta diferentes cultivos tanto en áreas templadas como tropicales. El principal daño ocasionado por esta especie es la reducción o deformación de hojas jóvenes, brotes, frutos y flores. En papayo, el daño en hojas causado por este ácaro es conocido como "mano de chango" porque el área foliar de las hojas de papayo se reduce casi hasta las nervaduras, simulando los dedos de un mono. Este daño es similar al causado por Papaya Ringspot Virus (PRSV-P). Debido a que P. latus y PRSV-P causan daños similares a las hojas de papayo, el objetivo general de esta investigación fue estudiar la relación que existe entre el ácaro P. latus y PRSV-P en la reducción foliar de Carica papaya cv Maradol roja. Tres...
Palavras-chave: Papayo; Area foliar; Síntomas; Relación ácaro-virus; Leaf area; Damage; Virus-mite relationship; Doctorado; Fruticultlura.
Ano: 2010
URL: http://hdl.handle.net/10521/238

A Multicriteria Risk Analysis to Evaluate Impacts of Forest Management Alternatives on Forest Health in Europe
Provedor de dados: 7
Autores: Duncker, Philipp; Albert-Ludwigs-University Freiburg, Institute for Forest Growth;; Gardiner, Barry; Forest Research, Northern Research Station;; Grodzki, Wojciech; Forest Research Institute, Department of Forest Management in Mountain Regions;; Langstrom, Bo; The Swedish University of Agricultural Sciences, Department of Ecology;; Netherer, Sigrid; University of Natural Resources and Life Sciences, Department of Forest and Soil Sciences, Institute of Forest Entomology, Forest Pathology, and Forest Protection;; Nicoll, Bruce; Forest Research, Northern Research Station;; Orazio, Christophe; IEFC - EFI Atlantic;; Schelhaas, Mart-Jan; Centre for Ecosystem Studies, Alterra;; Tojic, Karl; Albert-Ludwigs-University Freiburg, Institute for Forest Growth;.
Due to climate change, forests are likely to face new hazards, which may require adaptation of our existing silvicultural practices. However, it is difficult to imagine a forest management approach that can simultaneously minimize all risks of damage. Multicriteria decision analysis (MCDA) has been developed to help decision makers choose between actions that require reaching a compromise among criteria of different weights. We adapted this method and produced a multicriteria risk analysis (MCRA) to compare the risk of damage associated with various forest management systems with a range of management intensity.  The objective was to evaluate the effect of four forest management alternatives (FMAs) (i.e., close to nature, extensive management with combined...
Tipo: Peer-Reviewed Reports
Palavras-chave: Abiotic; Biotic; Damage; Hazard; MCRA; Silviculture.
Ano: 2012

Polyphenoloxidase activity in peaches after vibration
Provedor de dados: 70
Autores: Dantas,Tiago B. H.; Ferraz,Antônio C. de O.; Honório,Sylvio L.; Lima,Giuseppina P. P.
The vibration during transportation is one of the main causes of fruit damage. The actual methodologies used for damage evaluation in fruits seem to be subjective, since most of them are based on visual evaluation. In this study the effect of vibration, for one and two hours, on polyphenoloxidase (PPO) activity in peach pulp was investigated. The relation among PPO activity variation, postharvest time and resting time were also considered. Results showed that vibration affects PPO activity. However, it was not possible to correlate PPO activity variation and vibration.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Polyphenoloxidase; Vibration; Damage; Peach.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162013000200010

Occurrence of insects causing injuries to the yacon crop
Provedor de dados: 75
Autores: Silva,Diego MN; Oliveira,Fábio L; Dalvi,Leandro P; Pratissoli,Dirceu; Erlacher,Wellington A; Quaresma,Mateus AL.
This research aimed to catalog insects that cause injury to the yacon (Smallanthus sonchifolius, família Asteraceae) crop, in order to identify those who may cause damage. The study was carried out in Alegre, Espírito Santo State, Brazil. Cultivation began in May 2013 and the harvest was done 180 days later. Three species from the Coleoptera order: Lagria villosa (Coleoptera: Lagriidae); Cerotoma arcuata and Diabrotica speciosa (Coleoptera: Chrysomelidae) and two species from the Lepidoptera order: Spodoptera eridania (Lepidoptera: Noctuidae) and Chlosyne lacinia saundersii (Lepidoptera: Nymphalidae) were observed causing damage to the yacon crop. The caterpillar C. lacinia saundersii, known as sunflower caterpillar, was the most important species, being...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Smallanthus sonchifolius; Damage; Pest management.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362015000300394

Recomendações técnicas para o manejo de Drosophila suzukii em cultivos de pequenos frutos.
Provedor de dados: 14
Autores: SANTOS, R. S. S. dos.
Drosophila suzukii é uma das mais importantes pragas de pequenos frutos em todo o mundo. A espécie possui a habilidade de inserir seus ovos em frutos que ainda estão em desenvolvimento nas plantas, ocasionando danos severos que podem comprometer toda a produção. Os cultivos mais atacados são aqueles que apresentam frutos com a epiderme fina, os quais oferecem pouca resistência à penetração do ovipositor da fêmea, como encontrado em amora-preta, cereja, framboesa, mirtilo, morango, entre outros. Neste documento estão apresentadas as características morfológicas da praga, que permitem sua identificação, os danos ocasionados nas frutas hospedeiras, assim como as principais técnicas disponíveis para atingir a maior eficiência de controle das populações. Além...
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Spotted wing drosophila; Damage; Management; Control; Gerenciamento; Danos; Controle; Hospedeiros; Hosts Management; Drosofila da Asa Manchada (DAM); Hosts.
Ano: 2020
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1123407

Nematóide em hortaliças.
Provedor de dados: 14
Autores: CHARCHAR, J. M.
bitstream/item/107344/1/CNPH-DOCUMENTOS-18-NEMATOIDES-EM-HORTALICAS.pdf
Tipo: Circular Técnica (INFOTECA-E)
Palavras-chave: Controle; Nematodes; Biology; Diseases; Damage; Symptoms; Control.; Biologia; Dano; Controle Cultural; Controle Químico; Doença; Hortaliça; Nematóide; Sintoma.; Ditylenchus; Pratylenchus; Scutellonema; Meloidogyne; Cultural control; Chemical control; Vegetables.
Ano: 1999
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/768139

Morte de pastos de braquiárias.
Provedor de dados: 14
Autores: BARBOSA, R. A.
Mortalidade de plantas forrageiras em pastagens nas regiões Centro-Oeste e Norte do Brasil - Introdução ao problema. Plintossolos e outros solos plínticos. Aspectos edáficos relacionados com a produção de Brachiaria brizantha cultivar Marandu. Caracterização climática das regiões de ocorrência da morte de pastagens de Brachiaria brizantha no Centro-Oeste e Norte do Brasil. Respostas morfofisológicas de Brachiaria spp. ao alagamento do solo e a síndrome da morte do capim-marandu. Aspectos fitopatológicos da morte do capim-braquiarão (Brachiaria brizantha). Mortalidade de Brachiaria brizantha cultivar Marandu: caisa patalógica?. Considerações sobre a morte de pastagens de Brachiaria brizantha cultivar Marandu em alguns Estados do Centro e Norte do Brasil -...
Tipo: Livro técnico (INFOTECA-E)
Palavras-chave: Marandu; Região Norte; Região Centro-Oeste; Brasil; Soils; Plant diseases; Damage; Brazilian savannas; Northen Region; West central Region.; Brachiaria; Clima; Cerrado; Doença de Planta; Pastagem; Praga de Planta; Solo.; Climate; Brazil; Pastures.
Ano: 2006
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/326069

Mosca branca: danos, importância econômica e medidas de controle.
Provedor de dados: 14
Autores: HAJI, F. N. P.; ALENCAR, J. A. de; LIMA, M. F.
Trata sobre a mosca branca: distribuição geográfica e plantas hospedeiras, sintomas, danos e importância econômica, medidas de controle.
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Controle; Importância econômica; White fly; Injury; Damage; Economic consequence; Host; Plant; Insect.; Inseto; Dano; Mosca Branca; Planta Hospedeira.; Aleyrodidae.
Ano: 1996
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/132234

Aplicação da amostragem sequencial para monitoramento dos níveis de ataque de Sirex noctilio em povoamentos de Pinus taeda.
Provedor de dados: 14
Autores: PENTEADO, S. do R. C.; OLIVEIRA, E. B. de; IEDE, E. T.
Devido à grande ameaça que Sirex noctilio (vespa da madeira) representa para o setor florestal brasileiro, é de fundamental importância o monitoramento da praga. Para isto, torna-se necessária a definição de uma técnica de amostragem de danos, que leve em conta a grande extensão dos povoamentos de pinus, os de ataque da praga, a praticiade de aplicação de método e os custos da atividade. Neste trabalho foi desenvolvido um método de amostragem, no qual a amostra não tem tamanho fixo, sendo dimensionada à medida em que a amostragem vai sendo realizada, em função dos resultados obtidos. Através da utilização de uma tabela apropriada, pode-se verificar, rapidamente, a nível de campo, se o número de amostras é suficiente, ou se a amostragem deve continuar sendo...
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E)
Palavras-chave: Monitoramento; Wood wasp; Damage; Espécie exótica.; Praga de planta; Amostragem; Dano; Praga; Sirex Noctilio; Vespa da Madeira.; Pinus; Monitoring; Pests; Sampling.
Ano: 2002
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/306552

Perda de peso em grãos armazenados devido ao ataque de insetos.
Provedor de dados: 14
Autores: SANTOS, J. P.; OLIVEIRA, A. C. de.
bitstream/item/30659/1/ct-6.pdf
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Grain; Insect; Damage; Losses.; Armazenamento; Dano; Inseto; Grão; Perda; Peso; Praga.; Storage; Weight.
Ano: 1991
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/478756

Metodologia de amostragem e nível de ação para as principais pragas da mangueira no Vale do São Francisco.
Provedor de dados: 14
Autores: BARBOSA, F. R.; MOREIRA, A. N.; ALENCAR, J. A. de; HAJI, F. N. P.; MEDINA, V. D.
Principais pragas da mangueira no Vale do São Francisco; Microácaro da mangueira; Mosquinha da manga; Microlepidópterros da inflorescência; Tripes.
Tipo: Circular Técnica (INFOTECA-E)
Palavras-chave: Mosca-das-frutas; Microácaro; Mosquinha da manga; Monitoramento; Aceria mangiferae; Vale do São Francisco; Pest; Damage; Mango.; Manga; Anastrepha; Dano; Erosomyia Mangiferae; Mangifera Indica; Praga; Selenothrips Rubrocinctus; Tripes.; Ceratitis; Fruit flies; Mangoes; Monitoring.
Ano: 2000
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/134202

Aspectos biológicos, danos e estratégias de controle da mosca branca.
Provedor de dados: 14
Autores: HAJI, F. N. P.; MATTOS, M. A. de A.; ALENCAR, J. A. de; BARBOSA, F. R.; MOREIRA, A. N.
Origem e distribuição geográfica; Classificação; Descrição morfológica e aspectos biológicos; Estratégias de controle.
Tipo: Circular Técnica (INFOTECA-E)
Palavras-chave: Controle; Classificação; White flies; Control; Damage; Insect.; Entomologia; Inseto; Bemisia Tabaci; Dano; Mosca Branca.; Entomology; Classification.
Ano: 2000
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/134211

Dinamica populacional do percevejo-de-renda (Vatiga iludens) na cultura da mandioca no Distrito Federal.
Provedor de dados: 14
Autores: OLIVEIRA, M. A. S.; FIALHO, J. de F.; ALVES, R. T.; OLIVEIRA, J. N. S.; GOMES, A. C.
Este trabalho refere-se a dinamica populacional do percevejo-de-renda, Vatiga illudens (Drake, 1922) (Hemiptera: Tingidae) da mandioca (Manihot esculenta Crantz) no Distrito Federal no periodo de 1994 a 1997. Dentro da area util de parcela do experimento, foram efetuadas amostragens quinzenais durante o ciclo da cultura, utilizando-se da seguinte tecnica: de cada cinco plantas previamente marcadas, colhia-se uma folha e contava-se o numero de ninfas e adultos nela depositados. O nível de dano do percevejo-de- renda foi avaliado com base na ocorrencia dos sintomas do ataque dos insetos nas folhas das plantas em escala de notas crescentemente de 0 a 5. Os resultados mostram que as variedades mansas (Mantiqueira e Jacana) são as mais infestadas e as bravas...
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E)
Palavras-chave: Percevejo-de-renda; Distrito Federal; Brasil; Damage; Savanna; Praga: Inseto.; Cerrado; Dinâmica Populacional; Inseto; Mandioca; Manihot Esculenta; Percevejo de Renda; Praga de Planta; Vatiga Illudens.; Insecta.
Ano: 2001
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/567068

Flutuação populacional do percevejo-de-renda na cultura da mandioca (Manihot esculenta, Crantz) no Distrito Federal.
Provedor de dados: 14
Autores: OLIVEIRA, M. A. S.; FIALHO, J. de F.; ALVES, R. T.; OLIVEIRA, J. N. S.; GOMES, A. C.
bitstream/CPAC-2010/20766/1/comtec-49.pdf
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Distrito Federal; Brasil; Lacebug; Populational dynamic; Damage; Praga: Inseto.; Cerrado; Dinâmica Populacional; Mandioca; Manihot Esculenta; Percevejo de Renda; Vatiga Illudens.; Insecta; Brazil; Cassava.
Ano: 2001
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/564336

Acaro da necrose do coqueiro - Aceria guerreronis (Keifer): aspectos bioecologicos, sintomas, danos e medidas de controle.
Provedor de dados: 14
Autores: ALENCAR, J. A. de; HAJI, F. N. P.; BARBOSA, F. R.
Trata sobre a necrose do coqueiro: aspectos taxonomicos e bioecologicos, distribuicao geografica, sintomas e danos, nivel de dano economico, medidas de controle- controle cultural, controle biologico e controle quimico.
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E)
Palavras-chave: Acaro da necrose; Controle; Cocos; Diagnosis; Damage; Control; Coconut; Disease.; Coco; Doença; Aceria guerreronis; Cocos Nucifera; Dano; Ecologia; Sintoma.; Ecology.
Ano: 1999
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/131429

Tamandua-da-soja: aspectos biologicos, danos e comportamento.
Provedor de dados: 14
Autores: HOFFMANN-CAMPO, C.B.
bitstream/item/33678/1/tamandua.pdf
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E)
Palavras-chave: Comportamento; Controle; Brasil; Soybean; Insect; Pest; Biology; Behaviour; Damage; Control.; Biologia; Dano; Entomologia; Inseto; Pesquisa; Praga; Sternechus Subsignatus; Soja.; Brazil; Entomology; Research.
Ano: 1989
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/445135

Nova praga em Roraima: mosca branca (Bemisia tabaci Raca "B").
Provedor de dados: 14
Autores: MOREIRA, M. A. B.; LUZ, F. J. de F.
Tipo: Folhetos
Palavras-chave: Brasil; Roraima; Aleirodidae; Plants; Damage; Dano; Mosca Branca; Planta; Brazil.
Ano: 1998
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/688490

Broca-do-fruto da graviola no Distrito Federal.
Provedor de dados: 14
Autores: OLIVEIRA, M. A. S.; JUNQUEIRA, N. T. V.; ALVES, R. T.; OLIVEIRA, J. N. S.; ICUMA, I. M.; ANDRADE, G. A. de; SILVA, J. F. e.
bitstream/CPAC-2010/22806/1/comtec-55.pdf
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Distrito Federal; Brasil; Annonaceas; Damage; Cerconata anonella; Praga: Inseto.; Annona Muricata; Broca do Fruto; Cerrado; Infestação; Graviola; Praga de Planta.; Pests.
Ano: 2001
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/566176

Danos da lagarta-elasmo a cultura do milho e medidas para o seu controle.
Provedor de dados: 14
Autores: VIANA, P. A.; CRUZ, I.; WAQUIL, J. M.
bitstream/item/30546/1/ct-20.pdf
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Lagarta-elasmo; Controle; Elasmopalpus lignossellus; Pest; Damage; Control.; Dano; Milho; Praga; Zea Mays.
Ano: 2000
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/484426

Estratégias de controle preventivo do nematoide das galhas em goiabeira.
Provedor de dados: 14
Autores: MOREIRA, W. A.
bitstream/CPATSA/8849/1/INT41.pdf
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Controle; Guava; Control; Damage; Disease.; Goiaba; Doença; Dano; Nematóide.; Meloidogyne Incognita; Nematoda.
Ano: 2000
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/134199

Micro-Tomography to Study High-performance Sandwich Structures
Provedor de dados: 5
Autores: Davies, Peter; Choqueuse, Dominique; Bourbouze, G.
Although X-radiography has been widely used in studies of damage in composite materials, micro-tomography has received less attention, due to the high cost and limited availability of equipment. However, micro-tomographic analysis is a powerful tool, allowing 3D images of sections through sandwich materials to be obtained without specimen preparation. Four examples from a recent study are presented here, which show how micro-tomography can provide unique information on the quality of honeycomb sandwich structures, information on damage mechanisms and internal details of through thickness reinforcement in pinned foam cores.
Tipo: Text
Palavras-chave: Inspection; Adhesive; Meniscus; Pins; Damage.
Ano: 2011
URL: http://archimer.ifremer.fr/doc/00029/14061/11311.pdf

Synthetic rope responses in the context of load history: The influence of aging
Provedor de dados: 5
Autores: Weller, Samuel; Davies, Peter; Vickers, A. W.; Johanning, L.
In order to design marine renewable energy mooring systems which are both economical and durable it is necessary to establish the lifecycle performance of individual components. In parallel with numerical tool development, physical component testing utilising realistic load cases is pivotal in achieving a greater understanding of performance variations including the contribution of degradation mechanisms. Building upon previous experimental tests conducted by the authors, tension–tension tests were conducted on a sample used in first part of the study and samples extracted from a mooring line which was deployed for 18 months with the South West Mooring Test Facility. In agreement with the first part of the study it was found that sample axial stiffness and...
Tipo: Text
Palavras-chave: Synthetic mooring rope; Nylon; Marine renewable energy (MRE) device; Load history; Operational and long-term performance; Damage.
Ano: 2015
URL: https://archimer.ifremer.fr/doc/00250/36120/35799.pdf

Influence des propriétés de la matrice sur le comportement mécanique de matériaux composites verre/polyester utilisés en construction navale de plaisance - Cas des résines polyester limitant les émissions de styrène
Provedor de dados: 5
Autores: Perrot, Yves.
The work performed in this study is concerned with the characterization of glass/polyester composites for the pleasure boat industry. In particular the properties of polyester resins limiting styrene emissions have been evaluated.   Physico-chemical and mechnanical tests were first performed in order to understand the roles played by the constituants (matrix, fibres and fibre/matrix  interface). Then a study of damage mechanisms, delamination and impact resistance, was carried out on composite specimens. Durability and the influence of the marine environment was also examined through two parameters, temperature and sea water aging. Finally the transfer from material to structure was illustrated through three aspects : the influence of fabrication...
Tipo: Text
Palavras-chave: Damage; Mechanical properties; Low styrene emission resins; Composite materials; Plaisure boat industry; Endommagement; Propriétés mécaniques; Résines limitant les émissions de styrène; Matériaux composites; Construction navale de plaisance.
Ano: 2006
URL: http://archimer.ifremer.fr/doc/2006/these-2485.pdf

Environmental degradation of composites for marine structures: new materials and new applications
Provedor de dados: 5
Autores: Davies, Peter.
This paper describes the influence of seawater ageing on composites used in a range of marine structures, from boats to tidal turbines. Accounting for environmental degradation is an essential element in the multi-scale modelling of composite materials but it requires reliable test data input. The traditional approach to account for ageing effects, based on testing samples after immersion for different periods, is evolving towards coupled studies involving strong interactions between water diffusion and mechanical loading. These can provide a more realistic estimation of long-term behaviour but still require some form of acceleration if useful data, for 20 year lifetimes or more, are to be obtained in a reasonable time. In order to validate extrapolations...
Tipo: Text
Palavras-chave: Seawater; Immersion; Durability; Damage; Coupling.
Ano: 2016
URL: http://archimer.ifremer.fr/doc/00340/45167/44603.pdf

Atlas de fractographie des composites
Provedor de dados: 5
Autores: Jeannetaud, P; Krawczak, P; Bequignat, R; Pabiot, J; Bord, C; Vancon, M; Bard, M; Lemascon, A.
Fractography deals with the microscopic study of the fracture surfaces of a structure in order to define the initiation and the propagation of the damage and then the failure history of the structure (stress, environment ...). Today, we are able to identify the causes of the failure of metallic parts based on pictures of typical fracture surfaces, but there is nothing similar for composite materials. However, the increasing amount of literature devoted to fractography, as well as the constitution of "brain storming" groups on a European level confirm scientific interest in this fracture analysis mode that permits a better understanding of the existing relationship between the material's microscopic structure and its macroscopic mechanical behaviour. In...
Tipo: Text
Palavras-chave: Fractures; Damage; Failures; Ship technology; Composite materials; Endommagement; Rupture; Défaillance; Analyse d'avaries; Fractographie.
Ano: 1992
URL: http://archimer.ifremer.fr/doc/1992/acte-1060.pdf

Reducing whale-ship collisions by better estimating damages to ships
Provedor de dados: 5
Autores: Sèbe, Maxime; Kontovas, Christos A.; Pendleton, Linwood.
Collisions between ships and whales raise environmental, safety, and economic concerns. The management of whale-ship collisions, however, lacks a holistic approach, unlike the management of other types of wildlife-vehicle collisions, which have been more standardized for several years now. In particular, safety and economic factors are routinely omitted in the assessment of proposed mitigation solutions to ship strikes, possibly leading to under-compliance and a lack of acceptance from the stakeholders. In this study, we estimate the probability of ship damage due to a whale-ship collision. While the probability of damage is low, the costs could be important, suggesting that property damages are significant enough to be taken into consideration when...
Tipo: Text
Palavras-chave: Whale-ship collision; Damage; Cost; FSA; Wildlife-vehicle collision; Risk assessment.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00601/71327/69757.pdf

Influence of Through-Thickness Pinning on Composite Shear Properties
Provedor de dados: 5
Autores: Maurin, Romain; Baley, Christophe; Cartie, Denis D. R.; Davies, Peter.
This paper describes results from tests to examine the influence of through-thickness pinning on in-plane shear behaviour, measured by tensile loading of +/- 45A degrees specimens. Samples were produced by both aeronautical and marine manufacturing processes. As few previous studies have investigated pinning of marine composites these were also subjected to out-of-plane shear delamination tests. For both carbon/epoxy laminates the pins reduce the apparent in-plane shear modulus and strength. Pins modify the strain field measured by full-field image analysis, and slow damage development. A new damage mechanism, transverse pin cracking, was observed.
Tipo: Text
Palavras-chave: Z-pinning; Shear; Mode II; Damage; Acoustic emission.
Ano: 2012
URL: http://archimer.ifremer.fr/doc/00113/22390/20186.pdf

Contribution a l'usinage des materiaux composites
Provedor de dados: 5
Autores: Guegan, P; Lemaitre, F; Hamann, J.
While machining is generally to be avoided in the fabrication of components with composite materials, nevertheless many parts require some machining, drilling or milling after moulding. Machining of these materials involves the risk of damage in the machined region. It is therefore important to study the possible sources of damage and to quantify their extent for different drilling and milling operations.
Tipo: Text
Palavras-chave: Damage; Drilling; Ship technology; Composite materials; Usinage; Matériau composite.
Ano: 1992
URL: http://archimer.ifremer.fr/doc/1992/acte-1080.pdf

Endommagement mecanique de materiaux composites. Role sur les proprietes hygrothermiques
Provedor de dados: 5
Autores: Perreux, D; Suri, C; Varchon, D; Oytana, C.
The mechanical behaviour of polymer based glass fibre composites depends on the damage level and the amount of moisture present. Two anelastic damage models, both adapted to the mechanical properties of epoxy and polyester matrix polymers, are proposed. A coupling effect between the kinetics of damage and moisture level is shown.
Tipo: Text
Palavras-chave: Moisture; Damage; Modelling; Ship technology; Mechanical properties; Composite materials; Humidité; Endommagement; Modélisation; Comportement; Matériau composite.
Ano: 1992
URL: http://archimer.ifremer.fr/doc/1992/acte-1062.pdf

Dommage composites pendant l'expertise de bateaux en matériaux composites
Provedor de dados: 5
Autores: Barnouin, Bruno; Renaud, P.
The main conclusions drawn from examinations made by an expert over the last twelve years on boats in the Bay of Arcachon, including both motor and sailing boats, are presented. The different types of damage most frequently observed in different areas of the boats are described, with distinctions made between superstructures, areas below the water-line and other components. The damage is defined, common repair methods are described and simple design modifications to avoid the problems are discussed. In conclusion, it is apparent that the problems related specifically to aging of the material are rare or very rare. With improved fabrication methods and mastery of the design process in-service experience fully justifies the position of composite materials as...
Tipo: Text
Palavras-chave: Motor boats; Inspection; Accidents; Yachts; Damage; Ship technology; Composite materials; Plaisance; Réparation; Accident; Dommage; Avarie.
Ano: 1992
URL: http://archimer.ifremer.fr/doc/1992/acte-1066.pdf

Scale and size effects on dynamic response and damage of glass/epoxy tubular structures
Provedor de dados: 5
Autores: Tarfaoui, Mostapha; Gning, P.b.; Davies, Peter; Collombet, F.
The impact behavior of composite materials has been extensively studied but interest has been centered on flat plates. For underwater applications, thick composite cylinders are employed and several questions must be addressed concerning the influence of accidental impact. The aim of this work is to study the dynamic response of tubular structures. Such structures find many applications but the damage upon impact is not taken into account during their dimensioning. However, at the time of their handling or in service the damage introduced by accidental impact can compromise their capacity to fulfill their function. The cylinders are thick and consist of epoxy matrix and glass fiber reinforcement. After having observed the nature of the damage related to...
Tipo: Text
Palavras-chave: Size effect; Scale effect; Damage; Impact; Filament winding.
Ano: 2007
URL: http://archimer.ifremer.fr/doc/2007/publication-2458.pdf

Diabrotica speciosa (Ger.) (Coleoptera: Chrysomelidae): New Pest in Table Grape Orchards
Provedor de dados: 82
Autores: ROBERTO,SÉRGIO R.; GENTA,WERNER; VENTURA,MAURÍCIO U.
We report for the first time the occurrence of Diabrotica speciosa (Ger.) damaging blooming clusters in grapevine orchards in Northwest Paraná State. On middle September, 2000, insects were found feeding on style, stigma and eventually on ovary. Up to 15 adults per cluster were observed. Insects feeding on stigma caused flowers aborting. In high population areas, clusters showed low number of fruits and were out of market standards.
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Insecta; Damage; Outbreak; Grapevine; Vitis vinifera L.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2001000400030

アルファルファ上でのナカグロメクラガメの摂食とそれによって引き起こされる被害
Provedor de dados: 19
Autores: Hori, Koji; Kishino, Michiru; 堀, 浩二; 岸野, ミチル.
Palavras-chave: Adelphocoris suturalis; Alfalfa; Feeding; Damage; Histological observation.
Ano: 1992
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/1688

ナガイモ掘取り機の収穫作業体系と作業性能および負担面積
Provedor de dados: 19
Autores: 松田, 清明; 宮本, 啓二; 佐藤, 禎稔; MATSUDA, Kiyoaki; MlYAMOTO, Keiji; SATOW, Tadatoshi.
近年，連続的にナガイモ掘取りを行う機種が開発 され，利用され始めている.今回，従来から使用さ れているバックホー方式(K機)と掘取り方式の異なる3機種(A，SおよびT機)の掘取り機について， 作業性能を明らかにするとともに，各掘取り機の負 担面積や利用経費について検討した. 1)収穫作業に携わる作業者数は6-12人と供試機 により異なるが，概して能率の高い機種ほど作業 者は多い. 2 )各供試機の作業能率は， K機が2.2a/hであるのに 対して， A機が5.8a/h， S機は3.8a/h， T機が3.7a/h といずれも高能率である.10a当り投下労働量は， それぞれ27.8-32.4，20.8，21.0，21.9人・時である. 3 )各供試機の作業精度は，無傷の本数割合がいず れも98%以上と高く，損傷や掘残しの割合は極め て低い. 4 )各供試機の負担面積は， A機が4ha，K機は1.5ha， S機とT機が2.5haであり，その時のha当り機械利 用経費は，それぞれ556千円， 1,113 -1,173千円， 687千円， 699干円となる.各供試機の導入が不利 となる下限面積は， K機を他作業に利用するとい ずれも0.49-0.56haの範囲である. 従って， A機は高能率であるが多くの労働力や 前後処理に他の作業機を必要とし，大規模農家向 きである.また， K機は作業能率が低いが，少人 数でも作業が可能なことから小規模農家に適し，S機やT機は中規模農家に適している. Diggers of the backhoe type, the trencher type, and the plow type have been mainly used to harvest Chinese yams until...
Palavras-chave: ナガイモ; 掘取り機; 作業能率; 作業精度; 損傷; 負担面積; 経費; Chinese yam; Digger; Working capacity; Operating accuracy; Damage; Coverage cost.
Ano: 2001
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/2831

Escolitídeos como bioindicadores do “declínio do nim” no Brasil
Provedor de dados: 190
Autores: Penteado, Susete do Rocio Chiarello; Carpanezzi, Aparecido Antonio; Neves, Edinelson José Maciel; Santos, Álvaro Figueredo dos; Flechtmann, Carlos Alberto Hector.
Este é o primeiro registro do ataque de besouros (Curculionidae, Scolitinae), no Brasil, causando danos em plantios de nim, entre 7 e 10 anos, em Brejinho de Nazaré, Tocantins, constado em junho de 2009. Os insetos foram identificados como, Xylosandrus compactus (Eichhoff), Cryptocarenus diadematus Eggers, 1937 e Hypothenemus sp. Westwood, 1836. Os plantios atacados apresentavam crescimento abaixo do esperado para a região, baixa produção de sementes, desfolhamento acentuado e rebrota intensa nos ramos, seguida por morte de brotos jovens e/ou do ápice do ramo. A ação dos insetos provocou pontos de exsudação intensa de goma nos orifícios provocados. O fato tem similaridade com a síndrome denominada “declínio do nim”, relatada na África.doi:...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Damage; Stress; Scolytinae; Ambrosia beetles; Azadirachta Danos; Estresse; Scolytinae; Besouros da ambrosia; Azadirachta.
Ano: 2011
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/179

Hidrogenionic potential (pH) of the attractant, trap density and control threshold for Ceratitis capitata (DIPTERA: TEPHRITIDAE) on Hamlin oranges in São Paulo central region, Brazil
Provedor de dados: 94
Autores: Paiva,Paulo Eduardo Branco; Parra,José Roberto Postali.
This study evaluated the effect of initial pH values of 4.5, 6.5 and 8.5 of the attractant (protein bait) Milhocina® and borax (sodium borate) in the field, on the capture of fruit flies in McPhail traps, using 1, 2, 4 and 8 traps per hectare, in order to estimate control thresholds in a Hamlin orange grove in the central region of the state of São Paulo. The most abundant fruit fly species was Ceratitis capitata, comprising almost 99% of the fruit flies captured, of which 80% were females. The largest captures of C. capitata were found in traps baited with Milhocina® and borax at pH 8.5. Captures per trap for the four densities were similar, indicating that the population can be estimated with one trap per hectare in areas with high populations. It was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: True fruit flies; Protein bait; Damage; IPM; Citros.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452013000200015

INFLUENCE OF THE PHENOLOGICAL PHASE OF TWO PEPPER CULTIVARS ON THE BEHAVIOUR OF Polyphagotarsonemus latus (BANKS)
Provedor de dados: 100
Autores: Rodríguez,H; Montoya,A; Miranda,Ileana; Rodríguez,Yaritza; Ramos,Mayra.
The severity of the damages caused by Polyphagotarsonemus latus (Banks) in the protected production of pepper have been related to the phenological phases of the crop. The influence of the phenological phases on the damages produced by P. latus on two Cuban pepper cultivars is evaluated in the present work. Groups of eight pots were formed with plants of each of the cultivars. The treatments consisted in the infestation of the apical zone of the plants with ten females of the broad mite at 5, 7, 10 and 14 weeks of seed germination, time periods corresponding to the different phenological phases. A group of eight plants of both cultivars were left uninfested as controls. After infestation, one leaf was collected from the apical zone of each plant every...
Tipo: Journal article
Palavras-chave: Capsicum annuum; Damage; Broad mite; Tarsonemidae; Injury levels.
Ano: 2011
URL: http://scielo.sld.cu/scielo.php?script=sci_arttext&pid=S1010-27522011000200002

A new Neotropical species of Liothrips (Thysanoptera: Phlaeothripidae) associated with Ludwigia (Myrtales:Onagraceae)
Provedor de dados: 99
Autores: Zamar,María I.; Hernández,María C.; Soto-Rodríguez,Gerardo A.; Retana-Salazar,Axel P.
Liothrips ludwigi (Thysanoptera: Phlaeothripidae) is described and a key to differentiate it from the other four species present in Argentina is provided. This species can be distinguished by the following characters: major setae on head and pronotum slender and brown yellowish; anteromarginal setae short (14µ-21µ), and metanotum reticulated with hexagonal cells. Liothrips ludwigi feeds and reproduces on Ludwigia grandiflora (Michx.) Greuter &amp;amp; Burdet and L. grandiflora ssp. hexapetala (Hook. &amp;amp; Arn.) G.L. Nesom &amp;amp; Kartesz (Myrtales: Onagraceae). This is the first record of the association between Liothrips and this family of plants.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Morphology; Biological characteristics; Damage; Biological control; Thrips.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0373-56802013000100008

การสำรวจแมลงศัตรูข้าวในโรงเก็บเขตภาคเหนือตอนบน
Provedor de dados: 106
Autores: Sa-ang Chairin; Supatra Suwanthada; Sumalee Sangparm.
Survey of rice stored pest in The Upper Northern part of Thailand was done in 3 agricultural cooperatives (Nongmuongkai, Maejai and Chiangsaen) using food trap during December 2011 – November 2012. The results showed that 25 stored rice insect pest were found (18 important insect pests and 7 natural enemies). At Nongmoungkai, the important insect pests were Liposcelis spp., Lophocateres pusillus, Sitophillus oryzae and Ceyptolestes pusillus were found with the survey number of 2, 206, 580, 365 and 108 respectively. The natural enemies Xylocoris flavipes was found with the number of 225. At Maejai, the important insect pests were S. oryzae, L. pusillus, L. spp., Rhyzoopertha dominica C. pusillus and Oryzaephilus surinamensis found with the survey number of...
Tipo: PhysicalObject
Palavras-chave: Stored pest; Rice; Upper northern; Liposcelis; Lophocateres pusillus; Sitophilus oryzae; Cryptolestes pusillus; Storehouse; Insect pest; Natural enemies; Survey; Damage; แมลงศัตรูข้าว; ข้าวสาร; ภาคเหนือตอนบน; เหาหนังสือ; มอดสยาม; ด้วงงวงข้าว; มอดหนวดยาว; โรงเก็บข้าวเปลือก; ยุ้งฉาง; การสำรวจแมลงศัตรูพืช; การประเมินความเสียหาย; การทำลายของแมลงศัตรูพืช.
Ano: 2014
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5693

Research on corn and sorghum insects
Provedor de dados: 106
Autores: Sawarng Charoenying; Somnuk Wongthong; Young, W.R.; Anuchit Chinajariyawong; Pramual Chaitooptong.
19 tables
Palavras-chave: Corn; Maize; Sorghum; Pest insects; Corn stalk borer; Ostrinia furnacalis; Varieties; Infestation; Defoliating insects; Mythimna separata; Corn armyworm; Sorghum webworms; Damage; Yields; ข้าวโพด; ข้าวฟ่าง; หนอนเจาะลำต้น; แมลงกินใบ; หนอนเจาะฝัก; ด้วงกุหลาบ; หนอนใย.
Ano: 1977
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/3932

การเปลี่ยนแปลงประชากรของแมลงศัตรูข้าวที่สำคัญในจังหวัดเชียงราย จากผลกระทบของสภาวะภูมิอากาศที่เปลี่ยนแปลง
Provedor de dados: 106
Autores: Kornsiri Srinil; Nootjarin Jungkhun; Tarapron Yuenyong; Kuntera Kanta; Antika Tonmit; Netnapa Pumhan.
Study about the accordance of rice insect pests from the light trap and the research data of insects in the rice seed of San-pah-tawng 1 (weak) and that of SuphanBuri 1 (resistant) was conducted from the year 2011 to 2013 at the Chiang Rai Rice Research Center. It’s found that the rice insect pests entrapped by the light trap being increased from the year 2007 to 2010. That in May, 2011, 4,779  zigzag leafhoppers were mostly found; in March, 2012, 19,248 whitebacked planthoppers were mostly found and; in May, 2013, 19,047 zigzag leafhoppers were mostly found. In the paddy field, rice insect pests were found in the rice seed of San-pah-tawng 1 more than that of Suphan Buri 1. In the In-season rice of the year 2011, the White backed planthoppers were mostly...
Tipo: PhysicalObject
Palavras-chave: Whitebacked planthoppers; Brown planthoppers; Light trap; Climatic change; Rice; Sanpatong 1 variety; Suphanburi variety; Weak variety; Resistant variety; Insect pest; Natural enemies; Survey; Damage; Population dynamics; Chiangrai province; เพลี้ยกระโดดหลังขาว; เพลี้ยกระโดดสีน้ำตาล; ข้าว; พันธุ์สันป่าตอง 1; พันธุ์สุพรรณบุรี 1; พันธุ์อ่อนแอ; พันธุ์ต้านทาน; การสำรวจแมลงศัตรูพืช; กับดักแสงไฟ; การเปลี่ยนแปลงสภาพภูมิอากาศ; ภาวะโลกร้อน; การทำลายของแมลงศัตรูพืช; การประเมินความเสียหาย; การทำลายของแมลงศัตรูพืช; จ.เชียงราย.
Ano: 2014
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5696

Population parameters and damage of Polyphagotarsonemus latus (Acari: Tarsonemidae) in Valencia orange (Citrus sinensis [L.] Osbeck) crop
Provedor de dados: 109
Autores: Rodríguez,Isaura Viviana; Mesa-Cobo,Nora Cristina; Valencia,Milton Orlando; Ossa,Julián.
Abstract Polyphagotarsonemus latus is one a major pest of Valencia orange in Colombia. To study its biology, it was established an experiment on young leaves of the Valencia orange at 25 ± 5°C, 70 ± 5% RH, and 12:12 L:D photoperiod. To characterize the nature of damage caused by this mite on leaves and young fruits, a trial in screenhouse conditions using young leaf and small fruits (0.1 - 0.3 cm in diameter) and fruits between 1.0-3.0 cm in diameter, which were infested with 5, 15 and 30 adult females of P. latus, was established. The total duration of life cycle was 3.2 days; the female had an oviposition period of 7.4 days and longevity 9.6 days. Life table parameters were as follows: net reproductive rate (R  o ) = 93.3, intrinsic rate of natural...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broad mite; Biology; Infestation levels; Damage; Colombia.
Ano: 2017
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122017000400633

Impacto econômico da broca do cupuaçu, Conotrachelus humeropictus Field (Coleoptera: Curculionidae) nos estados do Amazonas e Rondônia
Provedor de dados: 44
Autores: Lopes,Consuelo M. D'A.; Silva,Neliton M.
Cupuaçu [Theobroma grandiflorum (Willd. ex Spreng.) Schum.] crops on the highway BR 319 km57, in Careiro, Amazonas State and on the highway BR 364 km 150, in Nova California, Rondonia State were evaluated with respect to infestation of fruits by Conotrachelus humeropictus Field (Coleoptera: Curculionidae). Yield losses in crops from 1993 to 1997 showed that the insect which infested fruits, had a higher impact than the common fungus disease Crinipellis perniciosa (Stahel) Singer. The percentage of infested fruits by C. humeropictus was higher than the percentage of healthy fruits, the greatest loss (57.7%) observed in the 1995/96 season.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Insecta; Curculionidae; Fungus; Damage.
Ano: 1998
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0301-80591998000300019

Tetanorhynchus leonardosi (Mello-Leitão) (Orthoptera: Proscopiidae), nova praga em eucaliptos
Provedor de dados: 44
Autores: Flechtmann,Carlos A.H.; Ottati,Angelo L.T.
We report for the first time the attack of the walking stick Tetanorhynchus leonardosi (Mello-Leitão) (Orthoptera: Proscopiidae) on young eucalyptus, Eucalyptus urophylla, in Brazil. The upper third of the trees was attacked (apical meristems and new leaves). During the hottest hours of the day the insects were found sheltered between leaves on the median third of the plants, and feeding when temperatures were milder. The attack was heterogeneous in the stand, being more concentrated when it was neighbouring an area of native 'Cerrado' vegetation. Mean defoliation was 5.8%, with an average of 5.2% of plants with apical meristems cut by the walking sticks. An application of Methyl Parathion was not effective against the pest. Apparently plants older than 6...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Insecta; Damage; Dispersion; Walking stick.
Ano: 1997
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0301-80591997000300027

Ocorrência de Anastrepha obliqua (Macquart) (Diptera:Tephritidae) em acerola Malpighia punicifolia L. no estado do Pará
Provedor de dados: 44
Autores: Ohashi,Orlando S.; Dohara,Ricardo; Zucchi,Roberto A.; Canal D,Nelson A.
High infestations of Anastrepha obliqua in commercial crops of Barbados cherry in two counties of State of Pará, Northern of Brazil, were observed. The degree of infestation ranged from 7% to 88% and, fruits were depreciated for industrial purposes. Also, four species of braconid fruit fly parasitoids were identified.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Insecta; Fruit fly; Braconids; Damage.
Ano: 1997
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0301-80591997000200024

OCCURRENCE OF MELOIDOGYNE JAVANICA PARASITING ROOTS AND NODULES OF PEANUTS IN PARAGUAY
Provedor de dados: 53
Autores: LORDELLO,RUBENS RODOLFO ALBUQUERQUE; LORDELLO,ANA INES LUCENA; GODOY,IGNÁCIO JOSÉ DE.
The root-knot nematode Meloidogyne javanica (Treub, 1885) Chitwood, 1949, was identified in roots, nodules and shells of peanut plants (Arachis hypogaea L.), cv. Florman-INTA, collected from a field in Menno colony, Chaco Central region of Paraguay. Infected plants were observed in patches, showing wilting and drying of vegetative parts. Peanut had been grown ininterruptly for many years in the same area and patches had already been observed in the preceding year in cv. Starr. Nematodes collected from roots in this field reproduced on tomato cultivar rutgers and peanut cultivar florunner and produced egg-masses on roots, nodules and shells of cultivar Florman. This is the first report on M. javanica parasiting peanut in Paraguay.
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Root-knot nematode; Meloidogyne javanica; Peanut; Arachis hypogaea; Occurrence; Damage; Host; Nodules; Shells; Meloidogyne javanica; Arachis hypogaea.
Ano: 1997
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87051997000100009

Nitrogen fertilization sources and insecticidal activity of aqueous seeds extract of Carica papaya against Spodoptera frugiperda in maize
Provedor de dados: 118
Autores: Figueroa-Brito,Rodolfo; Villa-Ayala,Patricia; López-Olguín,Jesús F; Huerta-de la Peña,Arturo; Pacheco-Aguilar,Juan R; Ramos-López,Miguel A.
R. Figueroa-Brito, P. Villa-Ayala, J.F. López-Olguín, A. Huerta-de la Pena, J.R. Pacheco-Aguilar, and M.A. Ramos-López. 2013. Nitrogen fertilization sources and insecticidal activity of aqueous seeds extract of Carica papaya against Spodoptera frugiperda in maize. Cien. Inv. Agr. 40(3): 567-577. The damage caused by the fall armyworm Spodoptera frugiperda Smith (Lepidoptera: Noctuidae) to vegetative-stage maize cultivated with chemical nitrogen fertilizers, vermicompost, and Carica papaya L. (Caricaceae) seed extract was estimated. Each shoot was infested with one first instar larva of S. frugiperda. The variables measured included the percentage of germination, length of the second and fifth leaves, stem diameter and plant height, and the estimation of...
Tipo: Journal article
Palavras-chave: Aqueous extract; Caricaceae; Chemical fertilizers; Damage; Fall armyworm; Spodoptera frugiperda.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202013000300009

White grubs (Cyclocephala flavipennis) damaging perennial winter pastures in the South Region of Brazil
Provedor de dados: 65
Autores: Duchini,Paulo Gonçalves; Echeverria,Joilson Roda; Américo,Luana Fidelis; Guzatti,Gabriela Cristina; Cherman,Mariana Alejandra; Sbrissia,André Fischer.
ABSTRACT: Cyclocephala flavipennis Arrow, 1914 (Coleoptera: Melolonthidae), popularly known as white grub, is an insect widely disseminated in the South Region of Brazil. Despite the frequent occurrence of this white grub in areas cultivated with winter cereals, it is generally not considered a pest, since it feeds on straw and dead plant material. However, in 2015 and 2016, this insect has been identified as the damage-causing agent in the perennial winter pastures in Lages, Santa Catarina, Brazil. Damage was observed in patches and caused reduction in root depth and mass, resulting in loss of vigor, accelerated senescence in aerial parts, and death of tillers in Festuca arundinacea Schreb. and Dactylis glomerata L. plants.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Damage; Dynastinae; Grass; Pest; Santa Catarina.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000500153

Critical-point models to relate yield and disease intensity of the multiple pathosystem in rice leaf spots disease
Provedor de dados: 65
Autores: Bordin,Luiz Carlos; Casa,Ricardo Trezi; Marcuzzo,Leandro Luiz; Reis,Erlei Melo; Gheller,André; Zancan,Rômulo Luís; Fingstag,Maiquiel Diego.
ABSTRACT: The occurrence of leaf spots in irrigated rice can reduce the yield and compromise the quality of the grain. However it is unknown the economic damage threshold (EDT) that these spots cause the yield of crop. The objective of this study was to obtain damage functions for models of critical, to relate damage by simultaneous occurrence of blast, brown spot and scald spot with grain yield harvests in 2011/12 and 2012/2013, in Rio do Oeste, Santa Catarina State, Brazil. Gradient of diseases intensity was generated by number of applications and fungicides rates. Design was a randomized block with four replications and six treatments consisting of mixing fungicide applications of triazole (difenoconazole) and strobilurin (azoxystrobin). In 2011/12 and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Oryza sativa; Pyricularia oryzae; Bipolaris oryzae; Gerlachia oryzae; Damage.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016000100007