Winter Wheat Grain Yield Response to Fungicide Application is Influenced by Cultivar and Rainfall

Byamukama, Emmanuel; Ali, Shaukat; Kleinjan, Jonathan; Yabwalo, Dalitso N.; Graham, Christopher; Caffe‐Treml, Melanie; Mueller, Nathan; Rickertsen, John; Berzonsky, William A.

doi:10.5423/ppj.oa.04.2018.0056

Cited by 12 publications

(5 citation statements)

References 27 publications

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“…In many cases, the weather conditions determine the progression and spread of FHB [57]. Excessive precipitation, high humidity and high temperatures during wheat flowering and in the early stages of grain development (watery ripe/early milk) contribute to the development and spread of Fusarium infections [58].…”

Section: Discussionmentioning

confidence: 99%

“…There is considerable evidence to indicate that temperature and humidity are the main environmental factors responsible for the progression of FHB [2,57,64]. The severity of the spike infection caused by F. avenaceum increased in response to high precipitation [65].…”

Section: Discussionmentioning

confidence: 99%

“…Precipitation can also reduce the efficacy of fungicides, depending on its frequency after treatment [73]. In another study, the response of the grain yield to fungicide application was significantly influenced by rainfall in May and June [57]. The cited authors concluded that fungicide treatments against FHB are justified when the precipitation levels are high during the flowering and heading stages.…”

Section: Discussionmentioning

confidence: 99%

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Prevalence of Fusarium fungi and Deoxynivalenol Levels in Winter Wheat Grain in Different Climatic Regions of Poland

Okorski

Milewska

Pszczółkowska

et al. 2022

Toxins

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Fusarium head blight (FHB) caused by fungi of the genus Fusarium is one of the most dangerous crop diseases, which has a wide geographic distribution and causes severe economic losses in the production of major cereal species. The infection leads to the accumulation of mycotoxins in grains, which compromises its suitability for human and animal consumption. The study demonstrated that grain samples from warmer regions of Poland, including Sulejów and Tomaszów Bolesławicki (results differed across years of the study), were colonized mainly by F. graminearum and were most highly contaminated with deoxynivalenol (DON). Samples from Northeastern Poland, i.e., Ruska Wieś, which is located in a cooler region, were characterized by a predominance of Fusarium species typical of the cold climate, i.e., Fusarium poae and Penicillium verrucosum. A Spearman’s rank correlation analysis revealed that the severity of grain infection with F. avenaceum/F. tricinctum was affected by the mean daily temperature and high humidity in May, and the corresponding values of the correlation coefficient were determined at R = 0.54 and R = 0.50. Competitive interactions were observed between the F. avenaceum/F. tricinctum genotype and DON-producing F. culmorum and F. graminearum, because the severity of grain infections caused by these pathogens was bound by a negative correlation.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Prevalence of Fusarium fungi and Deoxynivalenol Levels in Winter Wheat Grain in Different Climatic Regions of Poland

Okorski

Milewska

Pszczółkowska

et al. 2022

Toxins

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“…The rapid development of leaf blotches is commonly associated with the amount of rainfall received in May and June and with the frequency of the rainfall (Byamukama et al, 2019), especially for Septoria tritici blotch. The high rainfall favours conidia transport from the lower leaves to the upper and the germination of spores (El Jarroudi et al, 2022).…”

Section: Discussionmentioning

confidence: 99%

Impact of Fungicide Treatment Schemes on the Severity of Leaf Blotches in Winter Wheat

Švarta,

Bimšteine,

Bankina

et al. 2023

Rural Sustainability Research

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The common control method of leaf blotches is the application of fungicides; however, the results of trials are inconsistent. The aim of the present study was to evaluate the impact of the fungicide treatment intensity on the severity of leaf blotches and to assess the correlation between the development of diseases and winter wheat (Triticum aestivum) yield in 2018–2021. The development of diseases was evaluated regularly. In this study, the severity of leaf blotches at the medium milk ripening (GS 75–77) was used. Tan spot dominated in 2018, 2019, and 2021, but Septoria tritici blotch dominated in 2020. Fungicides significantly decreased the severity of tan spot and Septoria tritici blotch, but the efficacy of used fungicide treatment schemes differed during trial years – it was more pronounced under higher pressures of leaf blotches. In the year with a high severity of Septoria tritici blotch, the best efficacy was obtained when fungicide was used two times (at GS 32–33 and GS 55–59), but for tan spot – when the dose of fungicide was done in two or three applications. Usage of fungicides increased wheat yield only under high pressure of diseases. A strong significant correlation between the severity of Septoria tritici blotch at GS 75–77 and grain yields was established only in 2020, when the severity of the disease was higher.

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“…We decided to limit the disease resistance to fungal diseases. This includes the most common group of diseases affecting wheat growers in Germany (Figueroa et al, 2018; Byamukama et al, 2019) and the yield loss caused by diseases varies between 14–27% (Wang et al, 2019). In 2019 farmers spent nearly 16% of all direct input costs on controlling those fungal diseases and nearly 55% of all pesticides input costs (KTBL, 2019).…”

Section: Methodsmentioning

confidence: 99%

Assessing German farmers’ trade-offs between disease resistance and yield in winter wheat varieties

2022

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Disease resistant crop varieties are important for both disease control and for reducing chemical pesticide use. However, there is often a trade-off between disease resistance and yield. While the European Union has banned the use of some pesticides in agriculture, large amounts are still applied to various crops, including wheat. Market-based instruments could motivate farmers to adopt more environmentally friendly production methods. In this study we aimed to explore farmers’ adoption of resistant varieties in different wheat price scenarios and their willingness to forgo yield when cultivating more resistant varieties. We conducted face-to-face interviews with 192 farmers using a choice experiment. Results showed that farmers preferred traits of yield stability (fungal disease resistance, lodging resistance and drought tolerance) over yield. Preferences for traits varied with the production system; livestock production was negatively associated with the importance of yield; cultivated land area was positively associated with protein content. The market price scenario did not change preferences. We calculate that farmers are willing to forgo more yield by cultivating highly disease resistant varieties than they are likely to recuperate from reducing costs of pesticides. Overall, we conclude that farmers’ choices are based more on a combination of the production system, drought experience, climate change belief and the potential impact of further regulations to reduce the use of chemical pesticides than on the expected wheat price.

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Winter Wheat Grain Yield Response to Fungicide Application is Influenced by Cultivar and Rainfall

Cited by 12 publications

References 27 publications

Prevalence of Fusarium fungi and Deoxynivalenol Levels in Winter Wheat Grain in Different Climatic Regions of Poland

Prevalence of Fusarium fungi and Deoxynivalenol Levels in Winter Wheat Grain in Different Climatic Regions of Poland

Impact of Fungicide Treatment Schemes on the Severity of Leaf Blotches in Winter Wheat

Assessing German farmers’ trade-offs between disease resistance and yield in winter wheat varieties

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