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Cambios de las comunidades de malezas como consecuencia de las rotaciones de cultivos
Istilart, Carolina Maria; Forjan, Horacio Jose; Manso, Marina Lucrecia; Yanniccari, Marcos Ezequiel (2017-04)La rotación de cultivos es una práctica agronómica clave para prevenir y evitar la aparición de malezas resistentes y tolerantes a herbicidas -
Changes in Weed Communities of Spring Wheat Crops of Buenos Aires Province of Argentina
Scursoni, Julio Alejandro; Gigon, Ramon; Martín, Andrés Nelson; Vigna, Mario Raul; Leguizamón, Eduardo Sixto; Istilart, Carolina Maria; Lopez, Ricardo (2014-03)During 2004 to 2008, weed surveys were conducted in 373 wheat fields of two different cropped areas (southwest [SW] and southeast [SE]) of the southern region of Buenos Aires Province of Argentina where different weed ... -
¿Cuánto paga una maleza por ser resistente a un herbicida?
Yanniccari, Marcos Ezequiel; Gigon, Ramon; Istilart, Carolina Maria (2015-08)La resistencia a herbicidas suele tener un costo energético para las malezas. Esto se traduce en una menor producción de semillas comparado a las plantas susceptibles. El conocimiento de estos aspectos ecológicos permite ... -
Dynamics of glyphosate resistance in Lolium perenne: pollen-mediated gene flow under field conditions in Argentina
Yanniccari, Marcos Ezequiel; Istilart, Carolina Maria; Gimenez, Daniel Oscar; Castro, Ana Maria (MDPI, 2018-11)The genus Lolium has shown a high tendency to evolve resistance to herbicides. Considering the high level of allogamy of L. perenne and the importance of the wind as an agent for pollen dispersion, the aim of this work was ... -
Efecto del glifosato sobre el crecimiento y acumulación de azúcares libres en dos biotipos de lolium perenne de distinta sensibilidad al herbicida = Glyphosate effects on the growth and free sugar accumulation of two lolium perenn e biotypes with different herbicide sensitivity
Yanniccari, Marcos Ezequiel; Istilart, Carolina Maria; Gimenez, Daniel Oscar; Acciaresi, Horacio Abel; Castro, Ana Maria (Sociedade Brasileira da Ciência das Plantas Daninhas, 2012-03)El movimiento sistémico del glifosato está determinado por el transporte de fotoasimilados. A su vez, la capacidad de un destino de consumir los asimilados está condicionada por su actividad metabólica. Pese a su importancia, ... -
Effects of glyphosate on the movement of assimilates of two Lolium perenne L. populations with differential herbicide sensitivity
Yanniccari, Marcos Ezequiel; Istilart, Carolina Maria; Gimenez, Daniel Oscar; Castro, Ana Maria (2012-10)Glyphosate applications trigger the depletion of aromatic amino acid pools and the decrease of photosynthesis that results in changes in carbon metabolism. The aim of this work was to determine the effect of glyphosate on ... -
Estrategias de manejo y control de Rama Negra en sistemas de producción
Istilart, Carolina Maria; Gigon, Ramon (2013-05)Esta maleza se ha convertido en un serio problema para la producción de nuestra zona y gran parte de la región agrícola de nuestro país. Conocerla y actuar en momentos adecuados es la estrategia que se debe tener en cuenta ... -
La evolución del ryegrass resistente a glifosato en la región
Yanniccari, Marcos Ezequiel; Istilart, Carolina Maria; Gigon, Ramon (2015-05)El ryegrass resistente a glifosato constituye una de las malezas difíciles en la producción de cereales de invierno. La genética de las plantas resistentes juega un rol crucial en la evolución de la resistencia, por lo ... -
Glyphosate effects on gas exchange and chlorophyll fluorescence responses of two Lolium perenne L. biotypes with differential herbicide sensitivity
Yanniccari, Marcos Ezequiel; Tambussi, Eduardo; Istilart, Carolina Maria; Castro, Ana Maria (2012-08)Despite the extensive use of glyphosate, how it alters the physiology and metabolism of plants is still unclear. Photosynthesis is not regarded to be a primary inhibitory target of glyphosate, but it has been reported to ... -
Glyphosate resistance in perennial ryegrass (Lolium perenne L.) from Argentina
Yanniccari, Marcos Ezequiel; Istilart, Carolina Maria; Gimenez, Daniel Oscar; Castro, Ana Maria (2012-02)In Argentina, glyphosate is the most widely used herbicide. A population of perennial ryegrass, subjected to two glyphosate applications per year during twelve years, was putatively identified as glyphosate-resistant based ... -
Glyphosate resistance in perennial ryegrass (Lolium perenne L.) is associated with a fitness penalty
Yanniccari, Marcos Ezequiel; Vila-Aiub, Martín Miguel; Istilart, Carolina Maria; Acciaresi, Horacio Abel; Castro, Ana Maria (2016)The net selection effect of herbicides on herbicide-resistance traits in weeds is conditioned by the fitness benefits and costs associated with resistance alleles. Fitness costs play an important evolutionary role preventing ... -
Impact of Imazamox and Imazapyr Carryover on Wheat, Barley, and Oat
Scursoni, Julio Alejandro; Montoya, Jorgelina Ceferina; Vigna, Mario Raul; Gigon, Ramon; Istilart, Carolina Maria; Renzi Pugni, Juan Pablo; Lopez, Ricardo; Porfiri, Carolina (2017-12)Imazapyr and imazamox are frequently applied postemergence to control grass and broadleaf weeds in imidazolinone-resistant sunflower in Argentina. Herbicide carryover to rotational crops represents a disadvantage of these ... -
Inheritance of glyphosate resistance in Lolium perenne and hybrids with Lolium multiflorum
Yanniccari, Marcos Ezequiel; Istilart, Carolina Maria; Gimenez, Daniel Oscar; Castro, Ana Maria (2015-05)Glyphosate-resistant Lolium species have been selected in weed communities where glyphosate is the herbicide used almost exclusively for weed control. The rate of evolution of herbicide resistance is highly influenced by ... -
Las malezas se defienden: resistencia a múltiples herbicidas
Yanniccari, Marcos Ezequiel; Istilart, Carolina Maria (2017-04)A nivel mundial, en la última década el número de malezas resistentes a más de un herbicida se ha incrementado en un 75 %. En nuestra región, el ryegrass no se queda atrás y cada vez es más frecuente la resistencia a varios ... -
Mechanism of Resistance to Glyphosate in Lolium perenne from Argentina
Yanniccari, Marcos Ezequiel; Gómez Lobato, María Eugenia; Istilart, Carolina Maria; Natalucci, Claudia; Gimenez, Daniel Oscar; Castro, Ana Maria (2017-10)In Argentina, glyphosate resistance was reported in a Lolium perenne population after 12 years of successful herbicide use. The aim of the current paper was to put in evidence for the mechanism of glyphosate resistance of ... -
La siembra asociada de pasturas con trigo
Forjan, Horacio Jose; Istilart, Carolina Maria; Manso, Marina Lucrecia (2017-07)Con el resurgir de la ganadería se recupera una práctica que fuera muy difundida en los sistemas mixtos de la región