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Mostrando ítems 345-364 de 400
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Relationship between incidence and severity of peanut smut and its regional distribution in the main growing region of Argentina
(Springer, 2021-10-20)Peanut smut, caused by the soil-borne pathogen Thecaphora frezii, has increased in incidence in the main Argentinian peanut-growing regions. Smut-affected pod transform the kernel into a mass of teliospores, which survive ... -
Relative incidence of cucurbit viruses and relationship with bio-meteorological variables
(Springer, 2020-02)Environmental heterogeneity can shape the plant-virus relationship, furthering the appearance of new diseases in crops, or altering disease incidence and severity. In this work, we studied the virus association with ... -
Relevamiento de virus y Spiroplasma kunkelii en lotes de maíz del Valle medio del Río Negro, Patagonia Argentina
(Asociación de Ingenieros Agrónomos del Norte de la Provincia de Buenos Aires, 2022-11-08)A survey to determine the presence and incidence of viruses and Spiroplasma kunkelii was conducted in corn fields in the Valle Medio del río Negro, Patagonia, Argentina, during 2021/22. Leaves were collected from random ... -
Relevamiento del carbón del maní: inóculo e intensidad de la enfermedad, campaña 2020-21
(IPAVE - CIAP, INTA, 2022-09)En el contexto de un Proyecto Local de INTA (PL328), un Proyecto disciplinario de INTA (I081) y un Convenio de Asistencia Técnica con la Fundación Maní Argentino, se trabajó articulando extensión e investigación para generar ... -
Relevamiento Preliminar de Variedades Comerciales y Experimentales de Arroz con Presencia de Polymyxa graminis
(Universidad Nacional del Nordeste, 2021-06-17)En Argentina, Maurino et al 2018 detectaron a Rice Stripe Necrosis Virus ( agente causal de la enfermedad viral denominada entorchamiento del arroz” Por su parte, Cúndom et al 2018 detectaron la presencia del hongo vector ... -
Response of soil microbial communities to agroecological versus conventional systems of extensive agriculture
(2018-05)World population growth has led to a rise in resource demands imposed on agricultural systems, generating an increased global use of natural resources. However, agroecology proposes self-regulation in order to achieve a ... -
Response of soil microbial communities to different management practices in surface soils of a soybean agroecosystem in Argentina
(Elsevier, 2010-12-03)Argentina is the world’s third most important soybean producer; hence, there is an urgent need to preserve soil health by applying appropriate agricultural practices to maintain sustainable production in the upcoming years. ... -
Respuesta de dos cultivares de olivo (Olea europaea L.) frente a la infección de una cepa Argentina de Xylella fastidiosa
(Asociación Argentina de Fitopatólogos, 2021-09-22)La olivicultura en Argentina se encuentra afectada por diversas problemáticas, siendo lo sanitario una de las más preocupantes La detección de Xylella fastidiosa Xf a finales del año 2013 complicó este panorama sobre todo ... -
Resultados preliminares sobre el patrón de distribución espacial de la incidencia de carbón del maní
(Centro de Ingenieros Agrónomos General Cabrera, 2019-09-19)El carbón del maní es una enfermedad monocíclica, su incidencia está dada en primera medida por la cantidad de inóculo al inicio del ciclo del cultivo (teliosporas en el suelo). El cultivo de maní, propio de su forma de ... -
Sample size for assessment of cladode brown spot in prickly pear cactus
(Springer, 2017-03-15)Cladode brown spot (CBS) is an important disease of prickly pear cactus (Nopalea cochenillifera) in Brazil. No standard method exists for sampling in the field. A study was conducted in 30 fields of prickly pear (cv. Miúda) ... -
Screening de malezas hospedantes de polymyxa sp presentes en campos de arroz (oryza sativa)
(Asociación Argentina de Fitopatólogos, 2021-09-22)El entorchamiento del arroz” es una enfermedad causada por Rice Stripe Necrosis Virus ( que produce pérdidas económicas mportantes en el cultivo a nivel mundial El RSNV es transmitido por el protista Polymyxa graminis que ... -
Screening for native Trichoderma strains as potential biocontrollers of the olive pathogen Verticillium dahliae
(Taylor and Francis, 2023-07-12)Verticillium dahliae is a soilborne pathogen that causes significant losses in olive crops in northwestern Argentina. Biological control through antagonistic microorganisms such as Trichoderma has great potential in the ... -
Screening of chickpea germplasm for Ascochyta blight resistance under controlled environment
(Springer, 2022-01-13)Chickpea is the third most important grain legume in the world after common bean and pea. Ascochyta blight (AB) of chickpea, caused by Ascochyta rabiei, is the most damaging disease of this crop worldwide. Losses may reach ... -
Sequencing of two Sunflower chlorotic mottle virus isolates obtained from different natural hosts shed light on its evolutionary history
(Springer, 2013-02)Sunflower chlorotic mottle virus (SuCMoV), the most prevalent virus of sunflower in Argentina, was reported naturally infecting not only sunflower but also weeds. To understand SuCMoV evolution and improve the knowledge ... -
Situación actual de Xylella fastidosa subsp. pauca y sus potenciales vectores en olivares de la Argentina
(Asociación Argentina de Fitopatólogos, 2023-06-10)Desde el año 2005 se observaba un marcado declinamiento de las plantaciones de olivo tradicionales de La Rioja. En el 2008 se relevaron visualmente 124.926 árboles, encontrando una incidencia promedio del 3,1 %, y un 1,3 ... -
Soil microbial communities under different soybean cropping systems: Characterization of microbial population dynamics, soil microbial activity, microbial biomass, and fatty acid profiles
(Elsevier, 2008-12-05)This work analyzes the direct effect of soil management practices on soil microbial communities, which may affect soil productivity and sustainability. The experimental design consisted of two tillage treatments: reduced ... -
Soybean responseto initial stage of Fusarium virguliforme infection
(BioRxiv, 2022-03-07)Fusarium virguliforme causes the Sudden Death Syndrome, an important disease in soybean crops. In this work, we investigated the defensive response mechanisms in soybean root, at cell wall level, during F. virguliforme ... -
Spatio and temporal spread of Plum pox virus infecting European plum (Prunus domestica L. cv. D'agen) orchard in Mendoza, Argentina = Distribución espacial y temporal del Plum pox virus en un monte de ciruelo europeo (Prunus domestica L cv D'agen) de Mendoza, Argentina
(Facultad de Ciencias Agrarias, Universidad Nacional de Cuyo, 2020)Sharka, caused by Plum pox virus (PPV), is considered one of the most serious viral diseases of stone fruits worldwide due to the great yield losses in orchards. In Rama Caída, Mendoza, a 5-year study (2007-2011) was ... -
A strain of Bacillus subtilis subsp. subtilis shows a specific antagonistic activity against the soil-borne pathogen of onion Setophoma terrestris
(2015)Pink Root is among the major diseases of onion and its causal agent, Setophoma terrestris, is one of the most severe pathogens in soils of tropical and subtropical climates. The management of Pink Root is difficult and the ... -
Striking differences in the biological and molecular properties of onion and garlic isolates of onion yellow dwarf virus
(Springer, 2013-06)Complete nucleotide (nt) and deduced amino acid sequences of two onion yellow dwarf virus (OYDV) isolates showing mild and severe symptoms in onion but being unable to infect garlic were determined. The genomes consisted ...