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Control of Cladosporium echinulatum in carnation using bicarbonates and Trichoderma Ciencia e Investigación Agraria
Sandoval,Claudio; Terreros,Valeria; Schiappacasse,Flavia.
Carnations, Dianthus caryophyllus, have been cultivated in Chile for several decades as a cut flower crop. At the present time, floriculture occupies 2,124 ha, of which 180 ha are devoted to carnations. Almost all carnations produced are sold in the domestic market. Several diseases affect carnations, among them fairyring leaf spot (Cladosporium echinulatum), the most important foliar disease in Chile. Different control alternatives for fairy-ring spot were evaluated on the carnation cv. Sarinah in terms of disease incidence and severity. The study was performed in June-August 2003 with a commercial carnation planting in a greenhouse located in Champa(33° 49' S, 70° 45' W) that in previous growing seasons reported a high incidence of fairyring leaf spot....
Tipo: Journal article Palavras-chave: Carnation; Cladosporium; Dianthus caryophyllus; Foliar diseases; Sodium bicarbonate; Trichoderma.
Ano: 2009 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202009000300015
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Evaluación de la Eficacia, Efecto Residual y de Volteo de Aplicaciones en Pretrasplante de Insecticidas Nicotinoides y Mezclas de Nicotinoide-Piretroide para el Control de Myzus persicae nicotianae (Hemiptera: Aphididae) en Tabaco Agricultura Técnica
Fuentes-Contreras,Eduardo; Basoalto,Esteban; Sandoval,Claudio; Pavez,Patricia; Leal,Claudia; Burgos,Raúl; Muñoz,Cristián.
Se evaluaron aplicaciones en pretrasplante en almacigueros de tabaco (Nicotiana tabacum L.) de imidacloprid, acetamiprid y tiametoxam, y una mezcla de imidacloprid y ciflutrina para el control del áfido Myzus persicae nicotianae Blackman. La dosis de imidacloprid de 14 g i.a. m-2 de almaciguero presentó mortalidades corregidas superiores al 80% casi permanentemente hasta los 75 días después de la aplicación (DDA) a las 48 h de la colocación de los áfidos sobre las plantas. En otro experimento acetamiprid en dosis de 5,6 g i.a. m-2 de almaciguero y tiametoxam en dosis de 7 g i.a. m-2 de almaciguero mantuvieron este mismo nivel de mortalidad corregida hasta los 50 y 30 DDA, respectivamente. A partir de los 30 DDA para todos los insecticidas evaluados en...
Tipo: Journal article Palavras-chave: Imidacloprid; Tiametoxam; Acetamiprid; Ciflutrina.
Ano: 2007 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0365-28072007000100002
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Variation over time in the prevalences of three viruses of the grapevine leafroll complex in a commercial vineyard in south-central Chile Ciencia e Investigación Agraria
Mujica,María Valentina; Mora,Roxana; Rosales,Marlene; Sandoval,Claudio.
A vineyard in south-central Chile was surveyed during five growing seasons to analyze the increase over time in the number of plants infected with Grapevine leafroll-associated virus-1, -2 and -3. At the end of the study, GLRaV-3 was found to be the most prevalent virus, with 46% of plants infected by this pathogen. GLRaV-2 infected 13% of plants, and GLRaV-1 infected 12%. Considering all three viruses together, the prevalence of infection increased exponentially from 14% of the plants at the beginning of the study period to 68% at the end. The patterns of the spread of GLRaV-2 and GLRaV-3 were mostly along the rows, whereas the pattern of spread for GLRaV-1 could not be determined.
Tipo: Journal article Palavras-chave: Field transmission; Grapevine leafroll-associated virus; GLRaV-1; GLRaV-2; GLRaV-3; Virus diagnosis.
Ano: 2013 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202013000100012
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