Fungicide control of stripe rust in wheat protection or eradication

Viljanen-Rollinson, S.L.H.; Parkes, R. A.; Armour, T.; Cromey, M. G.

doi:10.30843/nzpp.2002.55.3902

Cited by 9 publications

(7 citation statements)

References 2 publications

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“…According to Viljanen-Rollinson et al (2002), a frequent question is to ask in what growth stages and with what disease intensity should the SR chemical control be carried out? The answer is not simple, it is rather complex and very difficult to harmonize.…”

Section: Optimal Fungicide Timingmentioning

confidence: 99%

Role of Fungicide Applications on the Integrated Management of Wheat Stripe Rust

et al. 2020

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First described in Europe in 1777, stripe rust (SR) caused by Puccinia striiformis Westend. f. sp. tritici Erikss (Pst) is one of the most important and destructive diseases of wheat worldwide. Until 2000, SR was mainly endemic to cooler regions, but since then, new aggressive strains have emerged, spread intercontinentally, and caused severe epidemics in warmer regions across the world. This has put SR as a disease that poses a threat to the world food security. At present, the preferred strategy for control of SR is the access to wheat cultivars with adequate levels of SR resistance. However, wheat breeding programs are not sufficiently advanced to cope with the recently emerged Pst strains. Under this scenario, foliar fungicide applications have become an important component of SR management, but information on the effects of fungicide applications on SR control and wheat cultivar yield response is scarce. This review seeks to provide an overview of the impact and role of fungicides on SR management. With focus on wheat management in the major wheat-growing regions of the world, the review addresses: (a) the efficacy of different fungicide active ingredients, optimal fungicide timing and number of applications in controlling SR, and (b) the impact of fungicide on wheat grain yield response. Inclusion of fungicides in an integrated crop management approach is discussed.

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Section: Optimal Fungicide Timingmentioning

confidence: 99%

Role of Fungicide Applications on the Integrated Management of Wheat Stripe Rust

et al. 2020

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“…In general, the less frequent sprays allowed development of multiple levels of epidemics and were not effective in controlling the disease on Kubsa and Danda'a as stripe rust severity exceeded 20% within two weeks of its appearance. These results reiterate the role of varietal resistance in determining the frequency and effectiveness of chemical sprays once rust is established, [34] reported that the more resistant cultivars had very low AUDPCs and would probably not benefit from an application of fungicide to control stripe rust, unless the pathotype present was highly virulent against these cultivars.…”

Section: Discussionmentioning

confidence: 58%

Effect of Varieties, Fungicides and Application Frequencies to Wheat Yellow Rust Disease (<i>Puccinia striiformis</i> f. sp. <i>tritici</i>) Management in Arsi Highlands of Ethiopia

Ayele¹,

Chala²,

Shikur³

2019

AJBIO

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Wheat is one of Ethiopia's foremost important cereal crops in terms of area coverage and volume produced. However, the production and productivity of wheat is constrained by various biotic and a biotic stresses, among which wheat yellow rust disease caused by Puccinia striiformis f.sp.tritici is the one. Field experiments were conducted to develop integrated wheat yellow rust management strategy based on optimal frequency of fungicide application and wheat varieties combination at hotspot environments of Meraro and Bekoji, Arsi zone, in 2017 main cropping season. Treatments included two different fungicides, Epoxiconazole + Thiophanate-methyl and Propiconazole applied in two frequencies; and four bread wheat cultivars (Kubsa, Danda'a, Lemu and Wane), known for their differential reaction to the disease. Unsprayed controls were also included for comparison purposes. The experiment was laid out in randomized complete block design in factorial arrangement with three replications. Terminal severity levels up to 13%, 37%, 53% and 90% at Bekoji, and 11.67%, 53.3%, 58.33%, 92% at Meraro were recorded on the unsprayed varieties of Wane, Lemu, Danda'a and Kubsa, respectively. Twice application frequency of Epoxiconazole + Thiophanate-methyl resulted in a significant (P<0.01) grain yield increment of up to 95.3%, 76.4%, and 1086.8% at Bekoji and 129.7%, 135.5%, 2883.2% at Meraro on unsprayed plots of Lemu, Danda'a, and Kubsa, respectively. But yield increments as a result of fungicide applications were relatively lower (29.8% and 65.9% at Bekoji and Meraro, respectively) on the resistant variety Wane. Twice application of Epoxiconazole + Thiophanate-methyl at 15 days interval starting from the appearance of disease has proved the most effective in terms of reducing the level of stripe rust, and increasing grain and crop biomass yield. The current findings demonstrate the role fungicides and host resistance may play in effectively managing stripe rust of wheat. However, further research is needed to come up with other management options to sustainable and cost effective manage the disease under different agro-ecological settings.

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“…Plants were inoculated with the pathotype 234E139A, Yr17+, which is virulent on host genes Yr2, Yr3, Yr4, Yr7, Yr9 and Yr17, on 9 September 2009 for the autumn-sown trial, and on 2 November for the spring-sown trial, by planting infected plants in the trial site as described previously (Viljanen-Rollinson et al 2002).…”

Section: Methodsmentioning

confidence: 99%

Benefits from plant resistance in reducing reliance on fungicides in cereal disease management

Viljanen-Rollinson¹,

Marroni²,

Butler³

2010

NZPP

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Two field trials autumn and springsown with seven fungicide treatments and three wheat cultivars with different levels of resistance to Puccinia striiformis the cause of stripe rust were carried out at Lincoln during the 20092010 growing season to assess the value of utilising disease resistance within an integrated wheat disease management strategy The development of stripe rust was monitored during the season The resistant cultivar CFR02452 was free of stripe rust in all treatments including the no fungicide treatment There was more disease in the autumnsown trial than in the springsown trial The moderately resistant cultivar Torlesse had less stripe rust than the susceptible cultivar Claire in both trials and negligible disease in the springsown trial In cultivar Claire for both trials two fungicide applications that started before disease was present provided disease control that was similar to four applications but fungicide applications that commenced once the disease had established provided little control of stripe rust

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Fungicide control of stripe rust in wheat protection or eradication

Cited by 9 publications

References 2 publications

Role of Fungicide Applications on the Integrated Management of Wheat Stripe Rust

Role of Fungicide Applications on the Integrated Management of Wheat Stripe Rust

Effect of Varieties, Fungicides and Application Frequencies to Wheat Yellow Rust Disease (<i>Puccinia striiformis</i> f. sp. <i>tritici</i>) Management in Arsi Highlands of Ethiopia

Benefits from plant resistance in reducing reliance on fungicides in cereal disease management

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Fungicide control of stripe rust in wheat protection or eradication

Cited by 9 publications

References 2 publications

Role of Fungicide Applications on the Integrated Management of Wheat Stripe Rust

Role of Fungicide Applications on the Integrated Management of Wheat Stripe Rust

Effect of Varieties, Fungicides and Application Frequencies to Wheat Yellow Rust Disease (&lt;i&gt;Puccinia striiformis&lt;/i&gt; f. sp. &lt;i&gt;tritici&lt;/i&gt;) Management in Arsi Highlands of Ethiopia

Benefits from plant resistance in reducing reliance on fungicides in cereal disease management

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Effect of Varieties, Fungicides and Application Frequencies to Wheat Yellow Rust Disease (<i>Puccinia striiformis</i> f. sp. <i>tritici</i>) Management in Arsi Highlands of Ethiopia