Controle da ferrugem da folha do trigo (Puccinia triticina) em diferentes momentos de aplicação de fungicida

Oliveira, Gustavo Migliorini de; Pereira, Diego Dionizio; Camargo, Lênio Cesar Moraes de; Balan, Marcelo Gonçalves; Canteri, Marcelo Giovanetti; Igarashi, Seiji; Saab, Otavio Jorge Grigoli Abi

doi:10.1590/s1808-16572013000400010

Cited by 5 publications

(4 citation statements)

References 11 publications

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“…Crop yield was only affected under more severe conditions of infection on the harvest 2017, but no significant difference was observed for HW and WTG (Table 2). These results are similar to those obtained by Oliveira et al (2013), on what under conditions of high severity of Puccinia triticina (2,031.4 units of AUDPC in the absence of fungicide application), observed a direct relationship between the delay of fungicide applications and the reduction of crop yield, estimating a damage of 80.5 kg ha -1 for each day of application delay after identification of the first symptoms. However, the authors did not identify significant differences in the WTG variable.…”

Section: Resultssupporting

confidence: 90%

Association of multisite and site-specific fungicides in the control of Puccinia triticina and its effects on wheat yield

Sacon¹,

Netto²,

Gallina³

et al. 2019

Commun. Plant Sci.

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The wheat (Triticum aestivum L.) crop has great importance in the national context, the diseases are one of the main factors of losses, which emphasizes the importance of the pest system Triticum aestivum L. x Puccinia triticina Eriks. The aim of this study was to evaluate the efficiency of the combination of site-specific and multisite fungicides in the control of wheat leaf rust and its effects on crop yield. The evaluated treatments were: Control (absence of fungicide application); T + P (trifloxystrobin + prothioconazole); P + F (pyraclostrobin + fluxapyroxad); T + P + Mb (trifloxystrobin + prothioconazole + mancozeb); P + F + Mb (pyraclostrobin + fluxapyroxad + mancozeb) and Mb (mancozeb). Greater control of the disease was observed with the association of fungicides, there is a correlation between control and crop productivity, especially in harvest with greater severity of the disease. Highlighted Conclusions 1. At low severity the wheat leaf rust does not present damage on crop productivity. 2. The association of multisite and site-specific fungicides increases the disease control effect. 3. The application fungicide program with the association of different a.i. maintains the crop yield potential. 4. The disease control has a positive effect on the yield components, on the other hand, the AUDPC presents a negative correlation.

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Section: Resultssupporting

confidence: 90%

Association of multisite and site-specific fungicides in the control of Puccinia triticina and its effects on wheat yield

Sacon¹,

Netto²,

Gallina³

et al. 2019

Commun. Plant Sci.

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“…O controle químico com fungicidas, principalmente triazóis e estrobilurinas, por sua vez, é considerado o principal método de controle das principais doenças, sendo a aplicação de fungicidas uma prática constante na cultura do trigo, com efetividade de controle (OLIVEIRA et al, 2013), porém é evidente a escassez de informações referentes ao controle químico em trigo destinado à produção de forragem em cultivares de trigo duplo propósito. Com base no exposto, o presente trabalho teve por objetivo avaliar a eficiência de fungicidas, isolados ou em associação, e seu efeito sobre as características bromatológicas de trigo duplo propósito cultivar BRS Umbu.…”

Section: Características Bromatológicas De Trigo Doble Propósito Asocunclassified

Características bromatológicas de trigo duplo propósito associado à aplicação foliar de fungicida

Mendes¹,

Mendes²,

Neumann³

et al. 2018

Revista Brasileira De Tecnologia Aplicada Nas Ciências Agrárias

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NEIVERTH, J. Características bromatológicas de trigo duplo propósito associado à aplicação foliar de fungicida. ResumoO objetivo desta pesquisa foi avaliar a eficiência de fungicidas, isolados ou em associação, e seu efeito sobre as características bromatológicas de trigo duplo propósito, cultivar BRS Umbu. O experimento foi desenvolvido no campo experimental da Universidade Estadual do Centro Oeste -UNICENTRO, campus CEDETEG, no município de Guarapuava, PR. O delineamento experimental utilizado foi o de blocos casualizados, em esquema fatorial 4 x 3, sendo quatro fungicidas em três fases da cultura, estes em três repetições, totalizando 36 parcelas. Os tratamentos foram: 1-testemunha (sem aplicação); 2-triazol; 3-estrobilurina e 4-triazol + estrobilurina, e as fases de aplicação dos fungicidas foram: 1-vegetativa (perfilhamento); 2-reprodutiva (florescimento) e 3-vegetativa + reprodutiva. Foi utilizada a cultivar BRS Umbu e para os tratamentos os fungicidas: triazol (ciproconazol -200 mL ha -1 ); estrobilurina (trifloxistrobina -300 mL ha -1 ); triazol + estrobilurina (ciproconazol + trifloxistrobina -200 mL ha -1 ). Foram avaliadas as características bromatológicas: nutrientes digestíveis totais (NDT), teores de fibra em detergente neutro (FDN), teores de fibra em detergente ácido (FDA) e hemicelulose (HEM). As médias foram comparadas pelo teste de Tukey, a 5% de probabilidade. A aplicação de fungicida do grupo químico do triazol reduz os teores de fibra em detergente neutro e fibra em detergente ácido, sendo estes dependentes da fase de aplicação. A aplicação de fungicida em fase reprodutiva e vegetativa + reprodutiva demonstrou efeito positivo sobre os parâmetros bromatológicos da forragem de trigo duplo propósito.Palavras chave: Triticum aestivum; forragem; qualidade de fibra; controle de doenças. Abstract Bromatological characteristics of dual purpose wheat associated to foliar fungicide applicationThe objective of this research was to evaluate the efficiency of fungicides, isolated or in combination, and its effect on the bromatological characteristics of dual purpose wheat, BRS Umbu. The experiment was carried out in the experimental field of the Universidade Estadual do Centro Oeste -UNICENTRO, CEDETEG campus, in the city of Guarapuava, PR. The experimental design was a randomized complete block design, in a 4 x 3 factorial scheme, four fungicide management and three phases of culture, in three repetitions, totaling Cientific Paper

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“…Chemical control comes to being the most utilized strategy to be taken into consideration by growers in light of fungicides composed by a commercial mixture of strobilurin and triazoles. Nevertheless, responsiveness of wheat cultivars to fungicide sprays depends on disease severity index, degree and type of genotype resistance, management cultural practices, environmental conditions, and also on spray timing [10].…”

Section: Introductionmentioning

confidence: 99%

Impact of Fungicide Spray Timings on Foliar Diseases Control in Wheat Cultivars

Mattos¹,

Domingues²,

Pereira³

2023

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Wheat (Triticum aestivum L.) is grown throughout the winter time in Southern Brazil and turns out to be the main agricultural crop at such a year season in the State of Paraná. However, throughout the crop growing season foliar diseases significantly compromise commercial yields in such a manner as to justify the application of fungicides at the right time to control foliar diseases in production fields. The aim of the current manuscript was to assess the impact of different timings for fungicide application (epoxiconazole + pyraclostrobin) on the control of leaf rust (Puccinia triticina E.) and yellow spot (Pyrenophora tritici-repentis) diseases in two wheat genotypes featured by distinct levels of susceptibility in Southern Brazil. A field trial was conducted in Ponta Grossa, State of Paraná, Brazil, in light of split plot statistical design at an experimental area belonging to CESCAGE. The following treatments were imposed in the current study: control (with no sprays); sprays at the first node, booting and heading; sprays at stem extension and flowering; sprays at booting and heading. Throughout the entire crop growing season, the control treatment was conducive to the highest severity levels for both diseases. The increasing of the area under the diseases progress curve assessed herein substantially impinged upon yield components of both wheat genotypes under scrutiny. In general, fungicide sprays at the first node did not culminate in economical advantages. The best timing for fungicide application was the one ascribed to booting and heading stages.

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Controle da ferrugem da folha do trigo (Puccinia triticina) em diferentes momentos de aplicação de fungicida

Cited by 5 publications

References 11 publications

Association of multisite and site-specific fungicides in the control of Puccinia triticina and its effects on wheat yield

Association of multisite and site-specific fungicides in the control of Puccinia triticina and its effects on wheat yield

Características bromatológicas de trigo duplo propósito associado à aplicação foliar de fungicida

Impact of Fungicide Spray Timings on Foliar Diseases Control in Wheat Cultivars

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