The role of fungicides for effective disease management in cereal crops

Poole, Nick; Arnaudin, M. E.

doi:10.1080/07060661.2013.870230

Cited by 52 publications

(39 citation statements)

References 18 publications

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“…These yield and kernel quality results are consistent with Turkington et al (2004), Poole (2009), andArnaudin (2014), who reported that direct protection of the key upper canopy leaves from leaf disease is critical for maintaining seed yield and quality. Given their properties and efficacy, fungicide applications at the seedling stage will not provide direct protection of upper canopy leaf tissue (Poole and Arnaudin 2014).…”

Section: Grain Yield and Kernel Characteristicssupporting

confidence: 78%

“…Application of fungicide at the seedling stage only protects the green healthy tissue of emerged leaves and would not be expected to provide any protection for leaves not yet emerged. Foliar fungicides applied at the seedling stage, however, will not eradicate barley leaf disease pathogens, especially from well-established infections (Poole and Arnaudin 2014). As a consequence, these wellestablished infections and any infested crop residues present within a field will continue to contribute inoculum to the epidemic as the barley crop progresses into the stem elongation and flag leaf emergence stages.…”

Section: Total Leaf Area Diseasedmentioning

confidence: 99%

“…Most current cereal fungicides used in western Canada, including propiconazole, have varying degrees of systemic movement ranging from locally systemic to movement in the xylem tissue at the time of a fungicide application. Therefore, only those leaves or the parts of them that have emerged and present will be protected (Bartlett et al 2002;Poole and Arnaudin 2014). Application of fungicide at the seedling stage only protects the green healthy tissue of emerged leaves and would not be expected to provide any protection for leaves not yet emerged.…”

Section: Total Leaf Area Diseasedmentioning

confidence: 99%

“…The most important negative impact of leaf diseases is the destruction of photosynthetic leaf area, especially in the upper barley canopy. Destruction of green leaf area reduces the potential amount of photosynthate available for grain development and filling, thus leading to a reduction in yield and quality (Turkington et al 2004(Turkington et al , 2012Poole and Arnaudin 2014).…”

mentioning

confidence: 99%

“…However, there are few barley varieties with a complete package of resistance to the main leaf diseases on the prairies (Alberta Agriculture and Rural Development 2014a). When short rotations are followed and susceptible varieties are grown, fungicide application becomes a key strategy used by barley growers (Mathre 1997;Tekauz 2003;Turkington et al 2011;Poole and Arnaudin 2014).…”

mentioning

confidence: 99%

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The impact of fungicide and herbicide timing on foliar disease severity, and barley productivity and quality

et al. 2015

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. 2015. The impact of fungicide and herbicide timing on foliar disease severity, and barley productivity and quality. Can. J. Plant Sci. 95: 525Á537. There is interest in mixing herbicides with a half-rate of fungicide at herbicide timings for barley in western Canada. At six sites across the Canadian prairies from 2010 to 2012 combinations of herbicide and the fungicide Tilt † (propiconazole) were applied to barley at the two-to three-leaf stage (herbicide and half-rate fungicide), five-to six-leaf stage (herbicide and half-rate fungicide), and/or the flag leaf stage (full or half-rate fungicide only). Each plot area was cross-seeded with tame oat as a model weed prior to seeding. Upper canopy leaf samples were collected for leaf disease assessment at the early dough growth stage. Weed biomass, and grain yield and quality were determined. Total leaf area diseased (a combination of scald, both forms of net blotch and spot blotch) was greater for the two-to three-or five-to six-leaf stage herbicide-only treatments and the combination herbicide and half-rate fungicide treatments compared with fungicide at the flag leaf stage. Yield, 1000-kernel weight, kernel plumpness and test weight were greatest and kernel thins lowest for treatments with a flag leaf stage fungicide application. Split applications of fungicide at the time of herbicide application and at flag leaf emergence did not improve disease management and crop productivity compared with a single full rate fungicide application at the flag leaf stage. Weed biomass was generally not influenced by the treatments because weed control was excellent at all sites. However, yield was lower when herbicide was applied at the five-to six-leaf versus the two-to three-leaf stage. For improved leaf disease management and yield in barley, fungicide applications should include a flag leaf stage timing for adequate protection of upper canopy leaves, which are key contributors to yield and grain filling. Delaying herbicide application to the five-to six-leaf stage in an attempt to accommodate a fungicide application reduces barley yield due to early-season weed interference.Key words: Fungicide, herbicide, timing, leaf disease, barley Turkington, T. K., O'Donovan, J. T., Harker, K. N., Xi, K., Blackshaw, R. E., Johnson, E. N., Peng, G., Kutcher, H. R., May, W. E., Lafond, G. P., Mohr, R. M., Irvine, R. B. et Stevenson, C. 2015. Impact du moment d'application des fongicides et des herbicides sur la gravite´des maladies foliaires ainsi que sur la productivite´et la qualite´de l'orge. Can. J. Plant Sci. 95: 525Á537. Les producteurs d'orge de l'Ouest canadien souhaiteraient ajouter un fongicide, a`la moitie´du taux recommande´, au moment de l'application des herbicides. De 2010 a`2012, a`six sites des Prairies canadiennes, les auteurs ont applique´des me´langes d'herbicide et du fongicide Tilt † (propiconazole) a`de l'orge parvenu au stade de la deuxie`me ou de la troisie`me feuille (fongicide a`la moitie´du taux recommande´et herbicide), a`celui de la cinquie`me ou de la sixi...

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Section: Grain Yield and Kernel Characteristicssupporting

confidence: 78%

Section: Total Leaf Area Diseasedmentioning

confidence: 99%

Section: Total Leaf Area Diseasedmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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The impact of fungicide and herbicide timing on foliar disease severity, and barley productivity and quality

et al. 2015

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Total Syntheses of Xiamycins A, C, F, H and Oridamycin A and Preliminary Evaluation of their Anti‐Fungal Properties

et al. 2019

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Divergent and enantiospecific total syntheses of the indolosesquiterpenoids xiamycins A, C, F, H and oridamycin A have been accomplished. The syntheses, which commence from (R)‐carvone, employ a key photoinduced benzannulation sequence to forge the carbazole moiety characteristic of these natural products. Late‐stage diversification from a common intermediate enabled the first syntheses of xiamycins C and F, and an unexpected one‐pot oxidative decarboxylation, which may prove general, led to xiamycin H. All synthetic intermediates and the natural products were tested for anti‐fungal activity. Xiamycin H emerged as an inhibitor of three agriculturally relevant fungal pathogens.

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Total Syntheses of Xiamycins A, C, F, H and Oridamycin A and Preliminary Evaluation of their Anti‐Fungal Properties

et al. 2019

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The role of fungicides for effective disease management in cereal crops

Cited by 52 publications

References 18 publications

The impact of fungicide and herbicide timing on foliar disease severity, and barley productivity and quality

The impact of fungicide and herbicide timing on foliar disease severity, and barley productivity and quality

Total Syntheses of Xiamycins A, C, F, H and Oridamycin A and Preliminary Evaluation of their Anti‐Fungal Properties

Total Syntheses of Xiamycins A, C, F, H and Oridamycin A and Preliminary Evaluation of their Anti‐Fungal Properties

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