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Biblioteca (s) : |
INIA La Estanzuela. |
Fecha : |
06/07/2022 |
Actualizado : |
06/07/2022 |
Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
Autor : |
MARQUES, S.; VILA-AIUB, M.; HERNÁNDEZ, M.; KASPARY, T. E.; GARCIA, A. |
Afiliación : |
SOFÍA MARQUES HILL, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; MARTIN VILA-AIUB, IFEVA -CONICET.Faculty of Agronomy, Department of Ecology, University of Buenos Aires (UBA), Buenos Aires, Argentina.; MANUEL HERNÁNDEZ, School of Agronomy, University of the Republic of Uruguay, Montevideo, Uruguay.; TIAGO EDU KASPARY, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; MILTON ALEJANDRO GARCIA LATASA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
Título : |
Cross-and multiple herbicide resistance in Lolium multiflorum across Uruguay. |
Fecha de publicación : |
2022 |
Fuente / Imprenta : |
Weed Research, 2022,1-10. Doi: https://doi.org/10.1111/wre.12545 |
Serie : |
Online:1365-3180 |
DOI : |
10.1111/wre.12545 |
Idioma : |
Inglés |
Notas : |
Article history: Received: 1 March 2022/Accepted: 31 May 2022/First Published: 5 July 2022. |
Contenido : |
Abstract: Herbicide resistance is currently one of the most important problems in agricultural systems, threatening their sustainability. In Uruguay, there have been increasing reports of herbicide failures to control LOLMU (Lolium multiflorum Lam.) populations.
However, methodical characterization of herbicide resistance cases is lacking. Seeds from 66 LOLMU populations were collected from cropping fields and screened in greenhouse conditions with the recommended (1x) and half the recommended (1/2x) label dose of glyphosate, clethodim, pinoxaden and a formulation with iodosulfuron-methyl-sodium and mesosulfuron-methyl (IodoMeso). Populations were classified as resistant when mortality was equal to or lower than 80% in response to 1x doses, assessed 28 days after treatment (DAT). Results show that 80% of LOLMU populations were resistant to glyphosate, followed by 49%, 36% and 24% resistance to IodoMeso, pinoxaden and clethodim respectively. Moreover, 52% of the tested populations were resistant to more than one herbicide, with an important frequency of populations resistant to glyphosate and IodoMeso (17%) and to all tested herbicides (16%). In addition, a high correlation of resistance levels was found between pinoxaden and clethodim resistant populations (R2 = 0.84). Geographic distribution of tested populations suggests that multiple herbicide resistance is concentrated in fields with a longer history of herbicide use. Overall, these results confirm that herbicide resistance in LOLMU is widespread in agricultural regions of Uruguay and that significant number of multiple resistance cases already exist and are expected to increase rapidly if management practices are not adjusted quickly and substantially.This survey represents a key input to improve herbicide-resistant LOLMU management strategies. MenosAbstract: Herbicide resistance is currently one of the most important problems in agricultural systems, threatening their sustainability. In Uruguay, there have been increasing reports of herbicide failures to control LOLMU (Lolium multiflorum Lam.) populations.
However, methodical characterization of herbicide resistance cases is lacking. Seeds from 66 LOLMU populations were collected from cropping fields and screened in greenhouse conditions with the recommended (1x) and half the recommended (1/2x) label dose of glyphosate, clethodim, pinoxaden and a formulation with iodosulfuron-methyl-sodium and mesosulfuron-methyl (IodoMeso). Populations were classified as resistant when mortality was equal to or lower than 80% in response to 1x doses, assessed 28 days after treatment (DAT). Results show that 80% of LOLMU populations were resistant to glyphosate, followed by 49%, 36% and 24% resistance to IodoMeso, pinoxaden and clethodim respectively. Moreover, 52% of the tested populations were resistant to more than one herbicide, with an important frequency of populations resistant to glyphosate and IodoMeso (17%) and to all tested herbicides (16%). In addition, a high correlation of resistance levels was found between pinoxaden and clethodim resistant populations (R2 = 0.84). Geographic distribution of tested populations suggests that multiple herbicide resistance is concentrated in fields with a longer history of herbicide use. Overall, these results confirm that herbicide resista... Presentar Todo |
Palabras claves : |
Herbicide-resistant ryegrass; Resistance evolution; Resistance screening; South America. |
Thesagro : |
CONTROL DE MALEZAS; HERBICIDAS. |
Asunto categoría : |
H60 Malezas y escardas |
Marc : |
LEADER 02727naa a2200277 a 4500 001 1063406 005 2022-07-06 008 2022 bl uuuu u00u1 u #d 024 7 $a10.1111/wre.12545$2DOI 100 1 $aMARQUES, S. 245 $aCross-and multiple herbicide resistance in Lolium multiflorum across Uruguay.$h[electronic resource] 260 $c2022 490 $aOnline:1365-3180 500 $aArticle history: Received: 1 March 2022/Accepted: 31 May 2022/First Published: 5 July 2022. 520 $aAbstract: Herbicide resistance is currently one of the most important problems in agricultural systems, threatening their sustainability. In Uruguay, there have been increasing reports of herbicide failures to control LOLMU (Lolium multiflorum Lam.) populations. However, methodical characterization of herbicide resistance cases is lacking. Seeds from 66 LOLMU populations were collected from cropping fields and screened in greenhouse conditions with the recommended (1x) and half the recommended (1/2x) label dose of glyphosate, clethodim, pinoxaden and a formulation with iodosulfuron-methyl-sodium and mesosulfuron-methyl (IodoMeso). Populations were classified as resistant when mortality was equal to or lower than 80% in response to 1x doses, assessed 28 days after treatment (DAT). Results show that 80% of LOLMU populations were resistant to glyphosate, followed by 49%, 36% and 24% resistance to IodoMeso, pinoxaden and clethodim respectively. Moreover, 52% of the tested populations were resistant to more than one herbicide, with an important frequency of populations resistant to glyphosate and IodoMeso (17%) and to all tested herbicides (16%). In addition, a high correlation of resistance levels was found between pinoxaden and clethodim resistant populations (R2 = 0.84). Geographic distribution of tested populations suggests that multiple herbicide resistance is concentrated in fields with a longer history of herbicide use. Overall, these results confirm that herbicide resistance in LOLMU is widespread in agricultural regions of Uruguay and that significant number of multiple resistance cases already exist and are expected to increase rapidly if management practices are not adjusted quickly and substantially.This survey represents a key input to improve herbicide-resistant LOLMU management strategies. 650 $aCONTROL DE MALEZAS 650 $aHERBICIDAS 653 $aHerbicide-resistant ryegrass 653 $aResistance evolution 653 $aResistance screening 653 $aSouth America 700 1 $aVILA-AIUB, M. 700 1 $aHERNÁNDEZ, M. 700 1 $aKASPARY, T. E. 700 1 $aGARCIA, A. 773 $tWeed Research, 2022,1-10. Doi: https://doi.org/10.1111/wre.12545
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Biblioteca (s) : |
INIA Treinta y Tres. |
Fecha actual : |
11/11/2019 |
Actualizado : |
11/11/2019 |
Tipo de producción científica : |
Capítulo en Libro Técnico-Científico |
Autor : |
LÓPEZ-MAZZ; BALDI, F.; QUINTANS, G.; KENYON, P.R.; CORREA, O.; REGUEIRO, M.; ÁLVAREZ-OXILEY, A.; BANCHERO, G. |
Afiliación : |
CARLOS LÓPEZ-MAZZ, Departamento de Producción Animal y Pasturas. Facultad de Agronomía, Montevideo, Uruguay.; FERNANDO BALDI, Facultad de Ciencias Agrarias e Veternárias, Jaboticabal, Sao Paulo, Brazil.; GRACIELA QUINTANS ILARIA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; P.R. KENYON, Sheep Research Centre, Institute of Veterinary and Biomedical Sciences. Massey University, Palmerston, North, New Zealand.; O. CORREA, Departamento de Parasitología Veterinaria, Facultad de Veterinaria, Montevideo, Uruguay.; M. REGUEIRO, Departamento de Producción Animal y Pasturas. Facultad de Agronomía, Montevideo, Uruguay.; A. ÁLVAREZ-OXILEY, Departamento de Producción Animal y Pasturas. Facultad de Agronomía, Montevideo, Uruguay.; GEORGGET ELIZABETH BANCHERO HUNZIKER, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
Título : |
Efecto sobre el comportamiento productivo, reproductivo y la respuesta al desafío parasitario en corderas cuyas madres fueron esquiladas a los 50 días de gestación. |
Fecha de publicación : |
2019 |
Fuente / Imprenta : |
In: QUINTANS, G.; IEWDIUKOW, M. (Ed.). Primer Seminario Técnico de Programación Fetal. Montevideo (UY): INIA, 2019. p. 99-109. |
Serie : |
(INIA Serie Técnica; 252) |
ISSN : |
1688-9266 |
Idioma : |
Español |
Contenido : |
ABSTRACT
This study evaluated the effect of shearing ewes at 50 day of gestation on the growth, reproductive behavior and response to a gastrointestinal parasite challenge in the
female offspring from weaning (104 d) to 18 months old. Fifty-seven Polwarth female lambs were used, 22 single (S) and 35 twin (T) born to ewes either shorn at 50 days of pregnancy (PS, n = 23) or shorn at 62 days post-partum (U, control, n = 34) resulting in four sub-groups: SPS: single female lambs born to ewes shorn at 50 days of pregnancy (n = 8), SU: single female lambs born to ewes shorn postpartum (n = 14), TPS: twin females lambs born to ewes shorn at 50 days of pregnancy (n = 15) or TU: twin female lambs born to ewes shorn postpartum (n = 20). All progeny was managed together under improved pasture with a minimum forage allowance of 6% live weight on dry matter basis. Body weight, body condition score (BCS) and fecal eggs count was recorded every 14 d from weaning to 18 months of
age. Concentrations of progesterone were measured weekly (from 4 to 10 months of age and from 14 to 18 months of age) to establish the onset of puberty. Ovulation rate (545 ± 1.0 d old) was recorded. Prepartum shearing did not affect the age at puberty or the ovulation rate, but those female lambs born as singles were more precocious (P = 0.03) and heavier (P = 0.02) at puberty than twin born female lambs. Both the average value of parasite egg count (P = 0.07) and the Famacha index (P = 0.02) for the entire study period were lower in female lambs born to prepartum shorn ewes than those born to postpartum shorn ewes. In conclusion, shearing at 50 days of gestation did not affect the growth or the reproductive behavior of female offspring. However, female lambs born from ewe shorn during gestation showed a better response to the parasite challenge, but further research is required to confirm this. MenosABSTRACT
This study evaluated the effect of shearing ewes at 50 day of gestation on the growth, reproductive behavior and response to a gastrointestinal parasite challenge in the
female offspring from weaning (104 d) to 18 months old. Fifty-seven Polwarth female lambs were used, 22 single (S) and 35 twin (T) born to ewes either shorn at 50 days of pregnancy (PS, n = 23) or shorn at 62 days post-partum (U, control, n = 34) resulting in four sub-groups: SPS: single female lambs born to ewes shorn at 50 days of pregnancy (n = 8), SU: single female lambs born to ewes shorn postpartum (n = 14), TPS: twin females lambs born to ewes shorn at 50 days of pregnancy (n = 15) or TU: twin female lambs born to ewes shorn postpartum (n = 20). All progeny was managed together under improved pasture with a minimum forage allowance of 6% live weight on dry matter basis. Body weight, body condition score (BCS) and fecal eggs count was recorded every 14 d from weaning to 18 months of
age. Concentrations of progesterone were measured weekly (from 4 to 10 months of age and from 14 to 18 months of age) to establish the onset of puberty. Ovulation rate (545 ± 1.0 d old) was recorded. Prepartum shearing did not affect the age at puberty or the ovulation rate, but those female lambs born as singles were more precocious (P = 0.03) and heavier (P = 0.02) at puberty than twin born female lambs. Both the average value of parasite egg count (P = 0.07) and the Famacha index (P = 0.02) for the entire study ... Presentar Todo |
Palabras claves : |
CORDERAS; CRECIMIENTO; ESQUILA TEMPRANO; INMUNIDAD; REPRODUCCIÓN. |
Asunto categoría : |
L53 Fisiología Animal - Reproducción |
URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/13790/1/St-252-p-99-109-Lopez-Mazz.pdf
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Marc : |
LEADER 02845naa a2200289 a 4500 001 1060407 005 2019-11-11 008 2019 bl uuuu u00u1 u #d 022 $a1688-9266 100 1 $aLÓPEZ-MAZZ 245 $aEfecto sobre el comportamiento productivo, reproductivo y la respuesta al desafío parasitario en corderas cuyas madres fueron esquiladas a los 50 días de gestación.$h[electronic resource] 260 $c2019 490 $a(INIA Serie Técnica; 252) 520 $aABSTRACT This study evaluated the effect of shearing ewes at 50 day of gestation on the growth, reproductive behavior and response to a gastrointestinal parasite challenge in the female offspring from weaning (104 d) to 18 months old. Fifty-seven Polwarth female lambs were used, 22 single (S) and 35 twin (T) born to ewes either shorn at 50 days of pregnancy (PS, n = 23) or shorn at 62 days post-partum (U, control, n = 34) resulting in four sub-groups: SPS: single female lambs born to ewes shorn at 50 days of pregnancy (n = 8), SU: single female lambs born to ewes shorn postpartum (n = 14), TPS: twin females lambs born to ewes shorn at 50 days of pregnancy (n = 15) or TU: twin female lambs born to ewes shorn postpartum (n = 20). All progeny was managed together under improved pasture with a minimum forage allowance of 6% live weight on dry matter basis. Body weight, body condition score (BCS) and fecal eggs count was recorded every 14 d from weaning to 18 months of age. Concentrations of progesterone were measured weekly (from 4 to 10 months of age and from 14 to 18 months of age) to establish the onset of puberty. Ovulation rate (545 ± 1.0 d old) was recorded. Prepartum shearing did not affect the age at puberty or the ovulation rate, but those female lambs born as singles were more precocious (P = 0.03) and heavier (P = 0.02) at puberty than twin born female lambs. Both the average value of parasite egg count (P = 0.07) and the Famacha index (P = 0.02) for the entire study period were lower in female lambs born to prepartum shorn ewes than those born to postpartum shorn ewes. In conclusion, shearing at 50 days of gestation did not affect the growth or the reproductive behavior of female offspring. However, female lambs born from ewe shorn during gestation showed a better response to the parasite challenge, but further research is required to confirm this. 653 $aCORDERAS 653 $aCRECIMIENTO 653 $aESQUILA TEMPRANO 653 $aINMUNIDAD 653 $aREPRODUCCIÓN 700 1 $aBALDI, F. 700 1 $aQUINTANS, G. 700 1 $aKENYON, P.R. 700 1 $aCORREA, O. 700 1 $aREGUEIRO, M. 700 1 $aÁLVAREZ-OXILEY, A. 700 1 $aBANCHERO, G. 773 $tIn: QUINTANS, G.; IEWDIUKOW, M. (Ed.). Primer Seminario Técnico de Programación Fetal. Montevideo (UY): INIA, 2019. p. 99-109.
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