Influence of glyphosate, crop volunteer and root pathogens on glyphosate‐resistant wheat under controlled environmental conditions

Baley, G. J.; Campbell, K. G.; Yenish, Joseph P.; Kidwell, K. K.; Paulitz, T. C.

doi:10.1002/ps.1687

Cited by 13 publications

(14 citation statements)

References 56 publications

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“…tritici . 212 The GR lines were not more susceptible to any of these pathogens than the lines from which they were derived. Furthermore, glyphosate application to the GR lines did not increase disease severity.…”

Section: Effects Of Glyphosate On Plant Disease In Glyphosate-resistamentioning

confidence: 90%

Glyphosate Effects on Plant Mineral Nutrition, Crop Rhizosphere Microbiota, and Plant Disease in Glyphosate-Resistant Crops

Duke¹,

Lydon²,

Koskinen³

et al. 2012

J. Agric. Food Chem.

236

175

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Claims have been made recently that glyphosate-resistant (GR) crops sometimes have mineral deficiencies and increased plant disease. This review evaluates the literature that is germane to these claims. Our conclusions are: (1) although there is conflicting literature on the effects of glyphosate on mineral nutrition on GR crops, most of the literature indicates that mineral nutrition in GR crops is not affected by either the GR trait or by application of glyphosate; (2) most of the available data support the view that neither the GR transgenes nor glyphosate use in GR crops increases crop disease; and (3) yield data on GR crops do not support the hypotheses that there are substantive mineral nutrition or disease problems that are specific to GR crops.

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Section: Effects Of Glyphosate On Plant Disease In Glyphosate-resistamentioning

confidence: 90%

Glyphosate Effects on Plant Mineral Nutrition, Crop Rhizosphere Microbiota, and Plant Disease in Glyphosate-Resistant Crops

Duke¹,

Lydon²,

Koskinen³

et al. 2012

J. Agric. Food Chem.

236

175

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“…Diferentes estudios afirman que el uso de herbicidas como el glifosato no causa efectos significativos en las plantas de maíz porque no alteran su crecimiento ni su rendimiento; sin embargo, estos estudios se realizan con plántulas para medir diferencias en el crecimiento (Njiti, Myers, Schroeder, & Lightfoot, 2003;Baley, Campbell, Yenish, Kidwell, & Paulitz, 2009;Camberato et al, 2011). El presente estudio es el primer reporte sobre efectos en la germinación.…”

Section: Discusión Y Conclusionesunclassified

Evaluación de la toxicidad del Roundup en la germinación de semillas de maíz (Zea mays)

Romero

Duque

2015

Ingenium

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Evaluación de la toxicidad del Roundup en la germinación de semillas de maíz (Zea mays)Evaluation of the toxicity of Roundup in the germination of the seeds of corn (Zea mays)COLCIENCIAS TIPO 1. ARTÍCULO ORIGINAL RECIBIDO: FEBRERO 6, 2015; ACEPTADO: MARZO 18, 2015 Pilar Cogua Romero, Dra. Sci.Bio. ResumenEl glifosato Roundup es uno de los herbicidas más utilizados en agricultura. Se ha demostrado que este agroquímico puede causar efectos negativos sobre algunas especies vegetales que no son el objetivo de su aplicación. Para determinar su efecto toxicológico se llevó a cabo un experimento con semillas de maíz (Zea mays). Se determinó la dosis media letal (LD50) y la concentración a la que el glifosato empieza a inhibir la germinación. Un total de 600 semillas se expusieron a seis diluciones de glifosato comercial, Roundup de Monsanto (0.05 µl/ml, 0.50 µl/ml, 5 µl/ml, 15 µl/ml, 50 µl/ml y 230 µl/ml). La inhibición de la germinación respecto al control se presentó a partir de diluciones superiores a 0.5 µl/ml de Roundup. Los resultados de este experimento indican que concentraciones muy bajas pueden causar efectos sobre especies no objetivo del uso. Se determinó una LD50-96 25.21 µl/ml. El análisis de Anova mostró diferencias significativas entre los tratamientos (p ˂ 0.05). Los datos sugieren una alta correlación entre la dosis y el efecto (r= 0.86). Los resultados sustentan que la fórmula comercial del glifosato, incluso a bajas concentraciones, puede ocasionar efectos sobre especies vegetales no objetivo. Palabras claveGlifosato; LD50; estudio in vitro; inhibición. AbstractThe glyphosate Roundup is one of the agriculture most used herbicides in monocultures. Nowadays it has been demonstrated that this agrochemical may cause negative effects on some vegetative species that are not actually its target application. In order to determine its toxicological effect, an experiment with corn seeds (Zea mays) was performed. The half lethal doses (LD50) was determined, as well as the concentration that the glyphosate starts to inhibit the germination. A total of 600 seeds were exposed to six dilutions of commercial glyphosate, Monsanto´s Roundup (0.05, 0.5, 5, 15, 50 y 230 µl/ml). The germination inhibition according with the control was presented since the dilutions that were greater than 0.5 µl of Roundup. The results of this experiment indicated that very low concentrations of Roundup may cause effects on non-target species. A LD50-96 = 25.21µl/ml was determined, and according with the ANOVA there were significant differences between treatments (p˂0.05). The data suggested a high correlation between the doses and the effect (r=0.86). These results sustain that commercial formulas of glyphosate, even at low concentrations may occasion adverted effects on non-target agriculture species.

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“…The bare patch phenomenon is particularly severe in fields during the transition from conventional to reduced tillage 9. Tillage breaks apart hyphal networks of the pathogen in the soil, accelerates the decomposition of crop residues that contain pathogen inoculum and results in an increased microbial activity that may inhibit pathogens 10…”

Section: Introductionmentioning

confidence: 99%

“…To kill weeds and volunteers, herbicides are often utilized. However, pathogen inoculum is produced in dying weeds or volunteer crops killed by herbicides, and disease can be transmitted to the subsequent crops 10. This phenomenon, known as the greenbridge effect, is widely documented with Rhizoctonia root rot and other diseases, such as take‐all caused by Gaeumannomyces graminis var.…”

Section: Introductionmentioning

confidence: 99%

“…In soybean ( Glycine max L.), the herbicides dimethenamid + metribuzin, pendimethalin, acifluorfen and imazethapyr caused increased Rhizoctonia root and hypocotyl rot in greenhouse studies 17. A non‐selective post‐emergence herbicide glyphosate, frequently used in the Pacific Northwest, is also reported to increase soilborne root disease and is known as the glyphosate synergistic response 10. On the other hand, the herbicide paraquat reduced the colony radius of the IA isolate of R. solani by more than 72% and decreased sclerotia production under laboratory conditions.…”

Section: Introductionmentioning

confidence: 99%

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Interactions between the root pathogen Rhizoctonia solani AG‐8 and acetolactate‐synthase‐inhibiting herbicides in barley

Lee

Ullrich

Burke

et al. 2012

Pest Management Science

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Influence of glyphosate, crop volunteer and root pathogens on glyphosate‐resistant wheat under controlled environmental conditions

Abstract: To minimize the damaging effects of these pathogens, producers should apply glyphosate at least 2-3 weeks before planting GR wheat, as currently advised for GS cereals.

Cited by 13 publications

References 56 publications

Glyphosate Effects on Plant Mineral Nutrition, Crop Rhizosphere Microbiota, and Plant Disease in Glyphosate-Resistant Crops

Glyphosate Effects on Plant Mineral Nutrition, Crop Rhizosphere Microbiota, and Plant Disease in Glyphosate-Resistant Crops

Evaluación de la toxicidad del Roundup en la germinación de semillas de maíz (Zea mays)

Interactions between the root pathogen Rhizoctonia solani AG‐8 and acetolactate‐synthase‐inhibiting herbicides in barley

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