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Biblioteca (s) : |
INIA La Estanzuela. |
Fecha : |
06/06/2019 |
Actualizado : |
07/06/2019 |
Tipo de producción científica : |
Poster |
Autor : |
BARAIBAR, S.; GERMAN, S.; PAREJA, L.; PEREYRA, S. |
Afiliación : |
SILVINA BARAIBAR PEDERSEN, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; SILVIA ELISA GERMAN FAEDO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; LUCIA PAREJA, Lucia Pareja Polo Agroalimentario y Agroindustrial, CENUR, Universidad de la Republica, Uruguay,; SILVIA ANTONIA PEREYRA CORREA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
Título : |
Fungicide strategies to manage wheat stem rust. |
Complemento del título : |
838-P. |
Fecha de publicación : |
2018 |
Fuente / Imprenta : |
In: Proceedings of the International Congress of Plant Pathology (ICPP) 2018: Plant Health in A Global Economy, Boston. |
Idioma : |
Inglés |
Contenido : |
Abstract: Stem rust (SR), caused by Puccinia graminis f.sp. tritici, is one of the most destructive diseases of wheat in the Southern Cone of America. The main factor contributing to this has been the increased use of susceptible cultivars. Medium-long term efforts pursue the development of adapted lines resistant to local and Ug99+races (potential risk). However, the optimization of short-term strategies comprising the use of foliar fungicides are needed to manage SR. Field trials were established in 2015 and 2016 in Uruguay to evaluate application moments of metconazole+epoxiconazole (first symptoms, ZGS65 and ZGS71) and nozzle types (CJ03®, TTJ60®) in SR susceptible (cv.B601) and intermediate (cv.B501) cultivars. Six commercial fungicides, including combinations of DMIs, QoIs and SDHIs and a non-treated and a complete treatment were evaluated in cv.B601 in both years. Fungicide application at disease onset significantly (p ? 0.05) reduced SR severity, AUDPC and increased grain yield, test weight and thousand-kernel weight as compared to the non-treated and applications at ZGS71. Epoxiconazole and metconazole were detected in harvested grain if applied at ZGS71. Yet, concentrations were below the maximum residue levels (CODEX and EU). Significant differences were found among fungicides for SR severity, if applied at first symptoms. These results suggest that fungicides can effectively reduce SR severity and increase grain yield in susceptible cultivars if applied at disease onset. MenosAbstract: Stem rust (SR), caused by Puccinia graminis f.sp. tritici, is one of the most destructive diseases of wheat in the Southern Cone of America. The main factor contributing to this has been the increased use of susceptible cultivars. Medium-long term efforts pursue the development of adapted lines resistant to local and Ug99+races (potential risk). However, the optimization of short-term strategies comprising the use of foliar fungicides are needed to manage SR. Field trials were established in 2015 and 2016 in Uruguay to evaluate application moments of metconazole+epoxiconazole (first symptoms, ZGS65 and ZGS71) and nozzle types (CJ03®, TTJ60®) in SR susceptible (cv.B601) and intermediate (cv.B501) cultivars. Six commercial fungicides, including combinations of DMIs, QoIs and SDHIs and a non-treated and a complete treatment were evaluated in cv.B601 in both years. Fungicide application at disease onset significantly (p ? 0.05) reduced SR severity, AUDPC and increased grain yield, test weight and thousand-kernel weight as compared to the non-treated and applications at ZGS71. Epoxiconazole and metconazole were detected in harvested grain if applied at ZGS71. Yet, concentrations were below the maximum residue levels (CODEX and EU). Significant differences were found among fungicides for SR severity, if applied at first symptoms. These results suggest that fungicides can effectively reduce SR severity and increase grain yield in susceptible cultivars if applied at diseas... Presentar Todo |
Palabras claves : |
CHEMICAL CONTROL; FUNGUS; WHEAT. |
Thesagro : |
TRIGO. |
Asunto categoría : |
H20 Enfermedades de las plantas |
Marc : |
LEADER 02088nam a2200193 a 4500 001 1059819 005 2019-06-07 008 2018 bl uuuu u00u1 u #d 100 1 $aBARAIBAR, S. 245 $aFungicide strategies to manage wheat stem rust.$h[electronic resource] 260 $aIn: Proceedings of the International Congress of Plant Pathology (ICPP) 2018: Plant Health in A Global Economy, Boston.$c2018 520 $aAbstract: Stem rust (SR), caused by Puccinia graminis f.sp. tritici, is one of the most destructive diseases of wheat in the Southern Cone of America. The main factor contributing to this has been the increased use of susceptible cultivars. Medium-long term efforts pursue the development of adapted lines resistant to local and Ug99+races (potential risk). However, the optimization of short-term strategies comprising the use of foliar fungicides are needed to manage SR. Field trials were established in 2015 and 2016 in Uruguay to evaluate application moments of metconazole+epoxiconazole (first symptoms, ZGS65 and ZGS71) and nozzle types (CJ03®, TTJ60®) in SR susceptible (cv.B601) and intermediate (cv.B501) cultivars. Six commercial fungicides, including combinations of DMIs, QoIs and SDHIs and a non-treated and a complete treatment were evaluated in cv.B601 in both years. Fungicide application at disease onset significantly (p ? 0.05) reduced SR severity, AUDPC and increased grain yield, test weight and thousand-kernel weight as compared to the non-treated and applications at ZGS71. Epoxiconazole and metconazole were detected in harvested grain if applied at ZGS71. Yet, concentrations were below the maximum residue levels (CODEX and EU). Significant differences were found among fungicides for SR severity, if applied at first symptoms. These results suggest that fungicides can effectively reduce SR severity and increase grain yield in susceptible cultivars if applied at disease onset. 650 $aTRIGO 653 $aCHEMICAL CONTROL 653 $aFUNGUS 653 $aWHEAT 700 1 $aGERMAN, S. 700 1 $aPAREJA, L. 700 1 $aPEREYRA, S.
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INIA La Estanzuela (LE) |
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Biblioteca (s) : |
INIA Treinta y Tres. |
Fecha actual : |
09/10/2014 |
Actualizado : |
15/10/2019 |
Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
Circulación / Nivel : |
B - 1 |
Autor : |
HÖTZEL, M.J.; UNGERFELD, R.; QUINTANS, G. |
Afiliación : |
GRACIELA QUINTANS ILARIA, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay. |
Título : |
Behavioural responses of 6-month-old beef calves prevented from suckling: influence of dams milk yield. |
Fecha de publicación : |
2010 |
Fuente / Imprenta : |
Animal Production Science, 2010, v.50, p.909-915. |
DOI : |
10.1071/AN09136 |
Idioma : |
Inglés |
Notas : |
Article history: Manuscript received 9 October 2009, accepted 23 May 2010. |
Contenido : |
Abstract:
The objective of the present experiment was to compare the behavioural response of calves reared by cows of different milk yields to the prevention of suckling with the aid of nose-flaps that allowed the maintenance of social contact with the dam. Twenty Hereford or Hereford · Angus crossbred primiparous cows from a single herd remained with their calves suckling until the beginning of the experiment, in late summer?early autumn. Milk production was determined monthly during the lactation period and the pairs were selected according to the cows?milk production, for higher or lower milk yield (HMY and LMY, respectively). On Day 0, suckling was prevented by placing a nose-flap anti-suckling device on each calf for 11 days. Calf behaviour was recorded from Day ?3 to Day 5, using instantaneous sampling of individual animals in each group, and the calves were weighed monthly since birth, and on Days ?8 and 11. Bodyweight profiles for HMY and LMY calves were similar until Day ?8; from then on, up to Day 11, HMY calves lost weigh, whereas LMY calves gained weight. Suckling frequency before nose-flaps were fitted was similar for HMY and LMY calves. There was no relationship between the cow?s milk yield and the changes observed in behaviour. Apart from playing, all behaviours were affected by prevention of suckling. The distance between the calves and the dam, and the frequency of grazing and rumination, decreased after nose-flaps were placed, whereas vocalisations, suckling attempts, walking and standing increased. In conclusion, the behavioural responses to prevention of suckling did not differ between the 6-month-old calves reared by cows with high yields andthose withlow milk yields. The behavioural response of calvesthat were prevented from suckling but were kept with the dams indicates that the cessation of suckling contributes to the weaning distress of 6-month-old beef calves. MenosAbstract:
The objective of the present experiment was to compare the behavioural response of calves reared by cows of different milk yields to the prevention of suckling with the aid of nose-flaps that allowed the maintenance of social contact with the dam. Twenty Hereford or Hereford · Angus crossbred primiparous cows from a single herd remained with their calves suckling until the beginning of the experiment, in late summer?early autumn. Milk production was determined monthly during the lactation period and the pairs were selected according to the cows?milk production, for higher or lower milk yield (HMY and LMY, respectively). On Day 0, suckling was prevented by placing a nose-flap anti-suckling device on each calf for 11 days. Calf behaviour was recorded from Day ?3 to Day 5, using instantaneous sampling of individual animals in each group, and the calves were weighed monthly since birth, and on Days ?8 and 11. Bodyweight profiles for HMY and LMY calves were similar until Day ?8; from then on, up to Day 11, HMY calves lost weigh, whereas LMY calves gained weight. Suckling frequency before nose-flaps were fitted was similar for HMY and LMY calves. There was no relationship between the cow?s milk yield and the changes observed in behaviour. Apart from playing, all behaviours were affected by prevention of suckling. The distance between the calves and the dam, and the frequency of grazing and rumination, decreased after nose-flaps were placed, whereas vocalisations, sucklin... Presentar Todo |
Palabras claves : |
CALVES; MILK PRODUCTION; SUCKLING. |
Thesagro : |
BOVINOS; CONDUCTA ANIMAL; DESTETE; ESTRES; GANADO DE CARNE; TERNEROS. |
Asunto categoría : |
L52 Fisiología Animal- Crecimiento y desarrollo |
URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/3484/1/Quintans-arb-2010-5.pdf
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Marc : |
LEADER 02745naa a2200277 a 4500 001 1051011 005 2019-10-15 008 2010 bl uuuu u00u1 u #d 024 7 $a10.1071/AN09136$2DOI 100 1 $aHÖTZEL, M.J. 245 $aBehavioural responses of 6-month-old beef calves prevented from suckling$binfluence of dams milk yield.$h[electronic resource] 260 $c2010 500 $aArticle history: Manuscript received 9 October 2009, accepted 23 May 2010. 520 $aAbstract: The objective of the present experiment was to compare the behavioural response of calves reared by cows of different milk yields to the prevention of suckling with the aid of nose-flaps that allowed the maintenance of social contact with the dam. Twenty Hereford or Hereford · Angus crossbred primiparous cows from a single herd remained with their calves suckling until the beginning of the experiment, in late summer?early autumn. Milk production was determined monthly during the lactation period and the pairs were selected according to the cows?milk production, for higher or lower milk yield (HMY and LMY, respectively). On Day 0, suckling was prevented by placing a nose-flap anti-suckling device on each calf for 11 days. Calf behaviour was recorded from Day ?3 to Day 5, using instantaneous sampling of individual animals in each group, and the calves were weighed monthly since birth, and on Days ?8 and 11. Bodyweight profiles for HMY and LMY calves were similar until Day ?8; from then on, up to Day 11, HMY calves lost weigh, whereas LMY calves gained weight. Suckling frequency before nose-flaps were fitted was similar for HMY and LMY calves. There was no relationship between the cow?s milk yield and the changes observed in behaviour. Apart from playing, all behaviours were affected by prevention of suckling. The distance between the calves and the dam, and the frequency of grazing and rumination, decreased after nose-flaps were placed, whereas vocalisations, suckling attempts, walking and standing increased. In conclusion, the behavioural responses to prevention of suckling did not differ between the 6-month-old calves reared by cows with high yields andthose withlow milk yields. The behavioural response of calvesthat were prevented from suckling but were kept with the dams indicates that the cessation of suckling contributes to the weaning distress of 6-month-old beef calves. 650 $aBOVINOS 650 $aCONDUCTA ANIMAL 650 $aDESTETE 650 $aESTRES 650 $aGANADO DE CARNE 650 $aTERNEROS 653 $aCALVES 653 $aMILK PRODUCTION 653 $aSUCKLING 700 1 $aUNGERFELD, R. 700 1 $aQUINTANS, G. 773 $tAnimal Production Science, 2010$gv.50, p.909-915.
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