Fungicide and cultivar effects on the development and temporal progress of wheat blast under field conditions

Rios, Jonas Alberto; Rios, V. S.; Paul, Pierce A.; Souza, Moacil Alves de; Araújo, Leonardo; Rodrigues, Fabrício Á.

doi:10.1016/j.cropro.2016.07.020

Cited by 40 publications

(38 citation statements)

References 20 publications

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“…However, these were not found proper in the case of susceptible varieties (Cruz, 2013;Kohli et al, 2011;. A mixture of trizoles (tebuconazole and metconazole) and strobilurins have been found effective in controlling MoT in moderately resistant wheat varieties (Kohli et al, 2011;Rios et al, 2016). MoT mutates fast.…”

Section: Chemical Controlmentioning

confidence: 99%

Wheat Blast- A New Challenge to Wheat Cultivation in South Asia

Singh¹

2017

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Section: Chemical Controlmentioning

confidence: 99%

Wheat Blast- A New Challenge to Wheat Cultivation in South Asia

Singh¹

2017

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“…It has long been considered that widespread and almost synchronous development of bleached wheat spikes occur in large commercial fields during outbreak years (Cruz et al 2015a). However, recent studies conducted in North and South America (Cruz et al 2015a;Rios et al 2016) provided new insights. Rios et al (2016) demonstrated that spike blast incidence could increase over time from a known source of inoculum.…”

Section: Wheat Blast Ecology and Epidemiologymentioning

confidence: 99%

“…However, recent studies conducted in North and South America (Cruz et al 2015a;Rios et al 2016) provided new insights. Rios et al (2016) demonstrated that spike blast incidence could increase over time from a known source of inoculum. In addition, wheat producers and blast researchers have reported the presence of hotspots within wheat fields during early epidemic development in Bolivia and Bangladesh.…”

Section: Wheat Blast Ecology and Epidemiologymentioning

confidence: 99%

“…In addition, it will be important to determine the relative importance of other potential primary sources of inoculum such as infected seeds (Urashima et al 1999), crop residue, and conidia from grass species other than wheat (Prabhu et al 1992;Urashima and Kato 1998). Basic aspects of the wheat blast epidemiology need to be determined including latent and incubation periods, optimum growth stage for infection, microclimate, and the interaction and dynamics of factors that support inoculum build-up and widespread epidemics (Cruz et al 2015a;Rios et al 2016). …”

Section: Wheat Blast Ecology and Epidemiologymentioning

confidence: 99%

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Wheat blast disease: danger on the move

Cruz

Valent

2017

Trop. plant pathol.

211

214

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Wheat blast is caused by the fungus Magnaporthe oryzae Triticum pathotype (MoT). The potential for wheat blast to cause widespread losses demands immediate action to understand and manage this explosive disease. The recent appearance of wheat blast in Bangladesh demonstrates the threat of global spread, which could occur via the movement of infected seed or grain. MoT mainly infects wheat heads, with symptoms closely resembling Fusarium head blight. To date, wheat blast is considered an intractable and dangerous disease and fungicides have shown limited efficacy. Disease management requires identification of new resistance sources and a complete understanding of MoT ecology and wheat blast epidemiology. Understanding the full potential for pathogen variability, including any role for sexual reproduction in the field, is critical. A small number of pathogen avirulence (AVR) genes block other host-adapted M. oryzae pathotypes from infecting wheat; so potential AVR gene mutations leading to new host jumps remain a threat. Indeed, some strains of the closely related Lolium pathotype, causing gray leaf spot of turf grasses, already infect wheat. This review provides the current status of wheat blast research and disease control strategies indicating similarities and differences to rice blast and gray leaf spot. Critical knowledge gaps are discussed.

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“…The model has then been used to prepare tables to predict blast. Rios et al (2016) recommended combining both genetic resistance and fungicide treatment for most effective blast management. With 70 and 90% control of final incidence and severity, they found that effect of resistance and fungicide was additive of incidence as well as severity control.…”

Section: Blast Managementmentioning

confidence: 99%

Wheat blast research: Status and imperatives

Sharma¹

2017

Afr. J. Agric. Res.

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Wheat blast is relatively a new disease of wheat that first appeared in Brazil in 1985. It did spread to some other neighbouring countries in the following years and owing to its predisposing factors, was feared to be capable of moving across continental boundaries. The disease has now been reported from Bangladesh. Wheat blast at best can be described as poorly understood as both pathogen and its pathogenicity as well as host and its ability to resist need to be investigated before breeders could confidently field varieties with sufficient levels of genetic resistance. In the meantime, chemical protectants and management strategies need to be worked out to tackle this menace that has already been impoertant in rice.

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Fungicide and cultivar effects on the development and temporal progress of wheat blast under field conditions

Cited by 40 publications

References 20 publications

Wheat Blast- A New Challenge to Wheat Cultivation in South Asia

Wheat Blast- A New Challenge to Wheat Cultivation in South Asia

Wheat blast disease: danger on the move

Wheat blast research: Status and imperatives

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