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Biblioteca (s) : |
INIA Las Brujas. |
Fecha : |
19/11/2015 |
Actualizado : |
19/11/2015 |
Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
Autor : |
MONDINO, P.; CASANOVA, L.; CELIO, A.; BENTANCUR, O.; LEONI, C.; ALANIZ, S. |
Afiliación : |
PEDRO MONDINO, Universidad de la República (UdelaR)/ Facultad de Agronomía; LETICIA CASANOVA, Universidad de la República (UdelaR)/ Facultad de Agronomía; ANTONELLA CELIO, Universidad de la República (UdelaR)/ Facultad de Agronomía; OSCAR BENTANCUR, Universidad de la República (UdelaR)/ Facultad de Agronomía; CAROLINA LEONI VELAZCO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; SANDRA ALANIZ, Universidad de la República (UdelaR)/ Facultad de Agronomía. |
Título : |
Sensitivity of Venturia inaequalis to Trifloxystrobin and Difenoconazole in Uruguay. |
Fecha de publicación : |
2015 |
Fuente / Imprenta : |
Journal of Phytopathology, 2015, v.163, p.1-10. |
DOI : |
10.1111/jph.12274 |
Idioma : |
Inglés |
Notas : |
Original article. Received: December 26, 2013; accepted: April 4, 2014. |
Contenido : |
ABSTRACT.
The sensitivity of Venturia inaequalis to trifloxystrobin and difenoconazole was studied in Uruguay. Populations of V. inaequalis were collected from apple orchards with different histories of trifloxystrobin use. Sensitivity of populations to trifloxystrobin was analysed using a method for testing spore germination published by FRAC, using a discriminatory concentration of 2.0 mg a.i./l. Resistance to trifloxystrobin was widespread in the region of commercial apple production with resistance detected in all orchards examined, the incidences ranging from 3% to 95%. The highest frequencies were found in orchards with the most intensive use of Quinone outside inhibitors (QoI) fungicides. Sensitivities of isolates of V. inaequalis to difenoconazole were assessed at five concentrations using a mycelial growth assay on isolates (33 isolates per orchard) from one non-commercial (baseline orchard) and two commercial orchards having differing histories of difenoconazole use. Populations in both commercial orchards exhibited reduced sensitivities to difenoconazole compared to the baseline orchard. Resistance factor (RF) values of 6.6 and 11.74 were measured in the orchards with moderate (up to 4 sprays per season) and
intensive use (more than 5 sprays per season) of difenoconazole, respectively. A single-assessment concentration (SAC) was identified for assessing difenoconazole sensitivity of V. inaequalis isolates by fitting linear regressions between log10 EC50 and relative growth (RG) of the isolates at each fungicide concentration testing, and comparing the goodness-of-fit of the regression lines. Comparable results were obtained based on EC50 values and RG values at a SAC of 0.05 mg of active ingredient per litre (a.i. per l). Populations from both commercial orchards differed from the baseline population, in that isolates with RG ≥70 were present at substantial levels in the former but absent from the latter. MenosABSTRACT.
The sensitivity of Venturia inaequalis to trifloxystrobin and difenoconazole was studied in Uruguay. Populations of V. inaequalis were collected from apple orchards with different histories of trifloxystrobin use. Sensitivity of populations to trifloxystrobin was analysed using a method for testing spore germination published by FRAC, using a discriminatory concentration of 2.0 mg a.i./l. Resistance to trifloxystrobin was widespread in the region of commercial apple production with resistance detected in all orchards examined, the incidences ranging from 3% to 95%. The highest frequencies were found in orchards with the most intensive use of Quinone outside inhibitors (QoI) fungicides. Sensitivities of isolates of V. inaequalis to difenoconazole were assessed at five concentrations using a mycelial growth assay on isolates (33 isolates per orchard) from one non-commercial (baseline orchard) and two commercial orchards having differing histories of difenoconazole use. Populations in both commercial orchards exhibited reduced sensitivities to difenoconazole compared to the baseline orchard. Resistance factor (RF) values of 6.6 and 11.74 were measured in the orchards with moderate (up to 4 sprays per season) and
intensive use (more than 5 sprays per season) of difenoconazole, respectively. A single-assessment concentration (SAC) was identified for assessing difenoconazole sensitivity of V. inaequalis isolates by fitting linear regressions between log10 EC50 and relat... Presentar Todo |
Palabras claves : |
APPLE SCAB; DMIs; FUNGICIDE RESISTANCE; RESISTENCIA A LOS FUNGICIDAS; SARNA DEL MANZANO; SINGLE-ASSESSMENT CONCENTRATION. |
Thesagro : |
ENFERMEDADES DE LAS PLANTAS; MANZANO; SARNA. |
Asunto categoría : |
H20 Enfermedades de las plantas |
Marc : |
LEADER 02876nga a2200313 a 4500 001 1053947 005 2015-11-19 008 2015 bl uuuu u00u1 u #d 024 7 $a10.1111/jph.12274$2DOI 100 1 $aMONDINO, P. 245 $aSensitivity of Venturia inaequalis to Trifloxystrobin and Difenoconazole in Uruguay. 260 $c2015 500 $aOriginal article. Received: December 26, 2013; accepted: April 4, 2014. 520 $aABSTRACT. The sensitivity of Venturia inaequalis to trifloxystrobin and difenoconazole was studied in Uruguay. Populations of V. inaequalis were collected from apple orchards with different histories of trifloxystrobin use. Sensitivity of populations to trifloxystrobin was analysed using a method for testing spore germination published by FRAC, using a discriminatory concentration of 2.0 mg a.i./l. Resistance to trifloxystrobin was widespread in the region of commercial apple production with resistance detected in all orchards examined, the incidences ranging from 3% to 95%. The highest frequencies were found in orchards with the most intensive use of Quinone outside inhibitors (QoI) fungicides. Sensitivities of isolates of V. inaequalis to difenoconazole were assessed at five concentrations using a mycelial growth assay on isolates (33 isolates per orchard) from one non-commercial (baseline orchard) and two commercial orchards having differing histories of difenoconazole use. Populations in both commercial orchards exhibited reduced sensitivities to difenoconazole compared to the baseline orchard. Resistance factor (RF) values of 6.6 and 11.74 were measured in the orchards with moderate (up to 4 sprays per season) and intensive use (more than 5 sprays per season) of difenoconazole, respectively. A single-assessment concentration (SAC) was identified for assessing difenoconazole sensitivity of V. inaequalis isolates by fitting linear regressions between log10 EC50 and relative growth (RG) of the isolates at each fungicide concentration testing, and comparing the goodness-of-fit of the regression lines. Comparable results were obtained based on EC50 values and RG values at a SAC of 0.05 mg of active ingredient per litre (a.i. per l). Populations from both commercial orchards differed from the baseline population, in that isolates with RG ≥70 were present at substantial levels in the former but absent from the latter. 650 $aENFERMEDADES DE LAS PLANTAS 650 $aMANZANO 650 $aSARNA 653 $aAPPLE SCAB 653 $aDMIs 653 $aFUNGICIDE RESISTANCE 653 $aRESISTENCIA A LOS FUNGICIDAS 653 $aSARNA DEL MANZANO 653 $aSINGLE-ASSESSMENT CONCENTRATION 700 1 $aCASANOVA, L. 700 1 $aCELIO, A. 700 1 $aBENTANCUR, O. 700 1 $aLEONI, C. 700 1 $aALANIZ, S. 773 $tJournal of Phytopathology, 2015$gv.163, p.1-10.
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INIA Las Brujas (LB) |
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Biblioteca (s) : |
INIA Treinta y Tres. |
Fecha actual : |
09/03/2022 |
Actualizado : |
09/03/2022 |
Autor : |
INIA (INSTITUTO NACIONAL DE INVESTIGACIÓN AGROPECUARIA); PROGRAMA NACIONAL PASTURAS Y FORRAJES; PROGRAMA NACIONAL PRODUCCIÓN DE CARNE Y LANA; PROGRAMA NACIONAL PRODUCCIÓN Y SUSTENTABILIDAD AMBIENTAL |
Afiliación : |
PROGRAMA NACIONAL DE INVESTIGACIÓN PASTURAS Y FORRAJES, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; PROGRAMA NACIONAL DE INVESTIGACIÓN PRODUCCIÓN DE CARNE Y LANA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; PROGRAMA NACIONAL DE INVESTIGACIÓN PRODUCCIÓN Y SUSTENTABILIDAD AMBIENTAL, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
Título : |
Día de campo UPAG: Testeando el componente pasturas del sistema arroz-ganadería. [Guía de Campo]. |
Fecha de publicación : |
2022 |
Fuente / Imprenta : |
Treinta y Tres (Uruguay): INIA, 2022, 15 p. |
Idioma : |
Español |
Palabras claves : |
COSTOS; DATOS CLIMÁTICOS; EVAPORACIÓN (AGUA); IMPLANTACIÓN; INIA SEPÉ; PASPALUM NOTATUM; PASTURAS SOBRE RASTROJO DE ARROZ; PRADERAS SEMBRADAS; PRECIPITACIONES; TEMPERATURAS. |
Asunto categoría : |
A50 Investigación agraria |
URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/16306/1/Dia-de-campo-UPAG-2022.pdf
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Marc : |
LEADER 00919nam a2200253 a 4500 001 1062813 005 2022-03-09 008 2022 bl uuuu u0uu1 u #d 100 1 $aINIA (INSTITUTO NACIONAL DE INVESTIGACIÓN AGROPECUARIA) 245 $aDía de campo UPAG$bTesteando el componente pasturas del sistema arroz-ganadería. [Guía de Campo].$h[electronic resource] 260 $aTreinta y Tres (Uruguay): INIA, 2022, 15 p.$c2022 653 $aCOSTOS 653 $aDATOS CLIMÁTICOS 653 $aEVAPORACIÓN (AGUA) 653 $aIMPLANTACIÓN 653 $aINIA SEPÉ 653 $aPASPALUM NOTATUM 653 $aPASTURAS SOBRE RASTROJO DE ARROZ 653 $aPRADERAS SEMBRADAS 653 $aPRECIPITACIONES 653 $aTEMPERATURAS 700 1 $aPROGRAMA NACIONAL PASTURAS Y FORRAJES 700 1 $aPROGRAMA NACIONAL PRODUCCIÓN DE CARNE Y LANA 700 1 $aPROGRAMA NACIONAL PRODUCCIÓN Y SUSTENTABILIDAD AMBIENTAL
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