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Registro completo
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Biblioteca (s) : |
INIA Las Brujas. |
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Fecha : |
19/11/2015 |
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Actualizado : |
19/11/2015 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Autor : |
MONDINO, P.; CASANOVA, L.; CELIO, A.; BENTANCUR, O.; LEONI, C.; ALANIZ, S. |
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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. |
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Título : |
Sensitivity of Venturia inaequalis to Trifloxystrobin and Difenoconazole in Uruguay. |
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Fecha de publicación : |
2015 |
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Fuente / Imprenta : |
Journal of Phytopathology, 2015, v.163, p.1-10. |
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DOI : |
10.1111/jph.12274 |
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Idioma : |
Inglés |
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Notas : |
Original article. Received: December 26, 2013; accepted: April 4, 2014. |
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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 |
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Palabras claves : |
APPLE SCAB; DMIs; FUNGICIDE RESISTANCE; RESISTENCIA A LOS FUNGICIDAS; SARNA DEL MANZANO; SINGLE-ASSESSMENT CONCENTRATION. |
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Thesagro : |
ENFERMEDADES DE LAS PLANTAS; MANZANO; SARNA. |
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Asunto categoría : |
H20 Enfermedades de las plantas |
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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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Registro original : |
INIA Las Brujas (LB) |
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Registro completo
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Biblioteca (s) : |
INIA Treinta y Tres. |
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Fecha actual : |
21/02/2014 |
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Actualizado : |
25/06/2018 |
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Tipo de producción científica : |
Documentos |
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Autor : |
DEAMBROSI, E.; MENDEZ, R.; AVILA, S. |
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Afiliación : |
ENRIQUE GERMAN DEAMBROSI CHURRUT, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; RAMON FELIPE MENDEZ LARROSA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; MARIFLOR STELLA AVILA SILVA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
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Título : |
Respuesta a las aplicaciones de fósforo y potasio. |
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Complemento del título : |
Fertilización. |
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Fecha de publicación : |
2001 |
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Fuente / Imprenta : |
ln: INIA TREINTA Y TRES. Arroz: resultados experimentales 2000-2001. Treinta y Tres (Uruguay): INIA, 2001. |
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Páginas : |
cap. 5, p. 1-11. |
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Serie : |
(INIA Serie Actividades de Difusión; 257) |
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Idioma : |
Español |
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Thesagro : |
APLICACION DE ABONOS; ARROZ. |
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Asunto categoría : |
F04 Fertilización |
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URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/10355/1/Ad-257-cap.5-p.1-11.pdf
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Marc : |
LEADER 00568naa a2200181 a 4500
001 1031483
005 2018-06-25
008 2001 bl uuuu u00u1 u #d
100 1 $aDEAMBROSI, E.
245 $aRespuesta a las aplicaciones de fósforo y potasio.
260 $c2001
300 $acap. 5, p. 1-11.
490 $a(INIA Serie Actividades de Difusión; 257)
650 $aAPLICACION DE ABONOS
650 $aARROZ
700 1 $aMENDEZ, R.
700 1 $aAVILA, S.
773 $tln: INIA TREINTA Y TRES. Arroz: resultados experimentales 2000-2001. Treinta y Tres (Uruguay): INIA, 2001.
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