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 | Acceso al texto completo restringido a Biblioteca INIA Las Brujas. Por información adicional contacte bibliolb@inia.org.uy. |
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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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| Acceso al texto completo restringido a Biblioteca INIA La Estanzuela. Por información adicional contacte bib_le@inia.org.uy. |
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Registro completo
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Biblioteca (s) : |
INIA La Estanzuela; INIA Tacuarembó. |
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Fecha actual : |
13/09/2017 |
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Actualizado : |
18/09/2017 |
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Tipo de producción científica : |
Abstracts/Resúmenes |
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Autor : |
FERRINHO, A.M.; PERIPOLLI, E.; BANCHERO, G.; PEREIRA, A.S.C.; BRITO, G.; LA MANNA, A.; FERNANDEZ, E.; MONTOSSI, F.; BALDI, F. |
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Afiliación : |
School of Animal Science and Food Engineering, University of São Paulo, Pirassununga, Brazil; Sao Paulo State University (UNESP), School of Agricultural and Veterinarian Sciences (FCAV), Department of Animal Science, Jaboticabal, Brazil; GEORGGET ELIZABETH BANCHERO HUNZIKER, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; Universidade de São Paulo, Pirassununga, Brazil.; GUSTAVO WALTER BRITO DIAZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; ALEJANDRO FRANCISCO LA MANNA ALONSO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; ENRIQUE GENARO FERNANDEZ RODRIGUEZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; FABIO MARCELO MONTOSSI PORCHILE, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; School of Agricultural and Veterinarian Sciences, Sao Paulo State University - FCAV/UNESP, Jaboticabal, Brazil. |
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Título : |
Effect of growth rate on beef fatty acid profile from Hereford steers finished either on pasture or in feedlot. |
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Fecha de publicación : |
2017 |
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Fuente / Imprenta : |
Journal of Animal Science, 2017, v.95, suppl.4. p.180-181. |
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DOI : |
10.2527/asasann.2017.365 |
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Idioma : |
Inglés |
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Notas : |
Article history: Published online: August 10, 2017. |
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Contenido : |
Abstract: Different nutritional management during the rearing and finishing periods can determine changes on beef fatty acid profile.
Beef lipid composition was quantified in 224 male Hereford calves weaned at 8 wk of age with an average initial live
weight (LW) of 170 ± 17 kg. After weaning, 4 nutritional treatments were imposed to obtain different daily LW gains (LWG;
kg/d) during the first winter. Nutritional management groups were high LWG in feedlot (HF), low LWG in feedlot (LF),
high LWG in pasture (HP), and low LWG in pasture (LP). The finishing phase began when each group reached a mean LW of
350 ± 28 kg. During the finishing phase, one-half of the HF, LF, HP and LP animals were finished on pasture and the other
half in a feedlot. The animals were slaughtered when calves in each treatment attained a mean LW of 500 kg. Analysis
of beef fatty acids was performed by extraction and methylation from LM, and the fatty acids were quantified using a gas
chromatography. The statistical model included the groups at growing phase (HF, LF, HP, and LP) and the groups at finishing
phase (feedlot or pasture) and the interaction between growing and finishing phase as fixed effects and LW at the
beginning of the finishing phase as a covariable. Tukey?s test was applied to compare the means (P < 0.05). There was interaction
between the growing and finishing phases for myristic acid and CLA cis 9, trans 11. Animals from HF finished on
pasture presented the highest concentration of myristic acid (2.54%) when compared with the other treatments. The LP
and HP groups finished on pasture had more CLA cis 9, trans 11 in their beef composition (0.60 and 0.58%, respectively),
whereas animals finished in the feedlot presented the lowest concentrations (average of 0.28%). Finishing phase affected
the fatty acid profile (P < 0.05). Higher concentrations of palmitic, oleic, and linoleic acids were observed in beef from
animals finished in the feedlot than in beef from those finished on pasture. However, the beef from animals finished on pasture
presented high concentrations of stearic, docosapentaenoic, and docosaexaenoic acids. Animals finished on pasture
had higher concentrations of linolenic, arachidonic, and eicosapentaenoic acids compared with those finished in feedlot. Interestingly,
the LP group presented higher concentrations of linolenic and eicosapentaenoic acids, regardless of the finishing
phase. The same results were observed in the LF group for arachidonic acid. In general, the LP and HP groups finished on
pasture resulted in healthy beefs, with the greatest CLA and omega-3 concentrations. MenosAbstract: Different nutritional management during the rearing and finishing periods can determine changes on beef fatty acid profile.
Beef lipid composition was quantified in 224 male Hereford calves weaned at 8 wk of age with an average initial live
weight (LW) of 170 ± 17 kg. After weaning, 4 nutritional treatments were imposed to obtain different daily LW gains (LWG;
kg/d) during the first winter. Nutritional management groups were high LWG in feedlot (HF), low LWG in feedlot (LF),
high LWG in pasture (HP), and low LWG in pasture (LP). The finishing phase began when each group reached a mean LW of
350 ± 28 kg. During the finishing phase, one-half of the HF, LF, HP and LP animals were finished on pasture and the other
half in a feedlot. The animals were slaughtered when calves in each treatment attained a mean LW of 500 kg. Analysis
of beef fatty acids was performed by extraction and methylation from LM, and the fatty acids were quantified using a gas
chromatography. The statistical model included the groups at growing phase (HF, LF, HP, and LP) and the groups at finishing
phase (feedlot or pasture) and the interaction between growing and finishing phase as fixed effects and LW at the
beginning of the finishing phase as a covariable. Tukey?s test was applied to compare the means (P < 0.05). There was interaction
between the growing and finishing phases for myristic acid and CLA cis 9, trans 11. Animals from HF finished on
pasture presented the highest concentration of myri... Presentar Todo |
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Palabras claves : |
ENGORDE A CORRAL; FINISHING SYSTEM; GROW-OUT; LIPID COMPOSITION; NOVILLOS HEREFORD; PASTURA. |
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Thesagro : |
CARNE VACUNA; NOVILLOS; URUGUAY. |
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Asunto categoría : |
--
L01 Ganadería |
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Marc : |
LEADER 03652naa a2200349 a 4500
001 1057563
005 2017-09-18
008 2017 bl uuuu u00u1 u #d
024 7 $a10.2527/asasann.2017.365$2DOI
100 1 $aFERRINHO, A.M.
245 $aEffect of growth rate on beef fatty acid profile from Hereford steers finished either on pasture or in feedlot.$h[electronic resource]
260 $c2017
500 $aArticle history: Published online: August 10, 2017.
520 $aAbstract: Different nutritional management during the rearing and finishing periods can determine changes on beef fatty acid profile. Beef lipid composition was quantified in 224 male Hereford calves weaned at 8 wk of age with an average initial live weight (LW) of 170 ± 17 kg. After weaning, 4 nutritional treatments were imposed to obtain different daily LW gains (LWG; kg/d) during the first winter. Nutritional management groups were high LWG in feedlot (HF), low LWG in feedlot (LF), high LWG in pasture (HP), and low LWG in pasture (LP). The finishing phase began when each group reached a mean LW of 350 ± 28 kg. During the finishing phase, one-half of the HF, LF, HP and LP animals were finished on pasture and the other half in a feedlot. The animals were slaughtered when calves in each treatment attained a mean LW of 500 kg. Analysis of beef fatty acids was performed by extraction and methylation from LM, and the fatty acids were quantified using a gas chromatography. The statistical model included the groups at growing phase (HF, LF, HP, and LP) and the groups at finishing phase (feedlot or pasture) and the interaction between growing and finishing phase as fixed effects and LW at the beginning of the finishing phase as a covariable. Tukey?s test was applied to compare the means (P < 0.05). There was interaction between the growing and finishing phases for myristic acid and CLA cis 9, trans 11. Animals from HF finished on pasture presented the highest concentration of myristic acid (2.54%) when compared with the other treatments. The LP and HP groups finished on pasture had more CLA cis 9, trans 11 in their beef composition (0.60 and 0.58%, respectively), whereas animals finished in the feedlot presented the lowest concentrations (average of 0.28%). Finishing phase affected the fatty acid profile (P < 0.05). Higher concentrations of palmitic, oleic, and linoleic acids were observed in beef from animals finished in the feedlot than in beef from those finished on pasture. However, the beef from animals finished on pasture presented high concentrations of stearic, docosapentaenoic, and docosaexaenoic acids. Animals finished on pasture had higher concentrations of linolenic, arachidonic, and eicosapentaenoic acids compared with those finished in feedlot. Interestingly, the LP group presented higher concentrations of linolenic and eicosapentaenoic acids, regardless of the finishing phase. The same results were observed in the LF group for arachidonic acid. In general, the LP and HP groups finished on pasture resulted in healthy beefs, with the greatest CLA and omega-3 concentrations.
650 $aCARNE VACUNA
650 $aNOVILLOS
650 $aURUGUAY
653 $aENGORDE A CORRAL
653 $aFINISHING SYSTEM
653 $aGROW-OUT
653 $aLIPID COMPOSITION
653 $aNOVILLOS HEREFORD
653 $aPASTURA
700 1 $aPERIPOLLI, E.
700 1 $aBANCHERO, G.
700 1 $aPEREIRA, A.S.C.
700 1 $aBRITO, G.
700 1 $aLA MANNA, A.
700 1 $aFERNANDEZ, E.
700 1 $aMONTOSSI, F.
700 1 $aBALDI, F.
773 $tJournal of Animal Science, 2017$gv.95, suppl.4. p.180-181.
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