Evaluation of models to control potato early blight ( Alternaria solani ) in Denmark

Abuley, Isaac Kwesi; Nielsen, Bent

doi:10.1016/j.cropro.2017.08.012

Cited by 42 publications

(50 citation statements)

References 23 publications

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“…Temperature (°C), relative humidity (RH, %) and precipitation (mm) during the trials in 2016 and 2017 were recorded from a standard weather station at Dalmose, which is 5 km from the trial sites …”

Section: Methodsmentioning

confidence: 99%

“…Alternaria solani is a polycyclic pathogen, completing several cycles of infection within a season. Therefore, the usual method of controlling early blight is by repeated application of fungicides . However, application of fungicide comes with high costs, environmental pollution and a risk of the emergence of resistance to fungicides .…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, the usual method of controlling early blight is by repeated application of fungicides . However, application of fungicide comes with high costs, environmental pollution and a risk of the emergence of resistance to fungicides . Therefore, there is a need to investigate alternative means of controlling early blight without or with a reduced amount of fungicide.…”

Section: Introductionmentioning

confidence: 99%

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The influence of timing the application of nitrogen fertilizer on early blight (Alternaria solani)

Abuley

Nielsen

Hansen

2018

Pest Management Science

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BACKGROUND Field experiments were carried out in 2016 and 2017 to study the influence of timing the application of nitrogen fertilizer (N‐fertilizer) on the susceptibility of potatoes to early blight. We hypothesized that potatoes that receive N‐fertilizer as split applications or a one‐time application at emergence will have a higher N content and be less susceptible to early blight than those that receive N‐fertilizer as a one‐time application before planting. N‐fertilizer was applied either as a one‐time application before planting or at emergence and as split applications. RESULTS Potatoes that did not receive N‐fertilizer were more susceptible to early blight [high area under the disease progress curve (AUDPC)] than those that did receive N‐fertilizer (low AUDPC). The timing of N‐fertilizer application had a significant effect on the susceptibility of potatoes to early blight. Potatoes that received the entire quantity of N‐fertilizer at emergence or as split applications had higher N contents and were less susceptible to early blight than those that received the entire quantity of N‐fertilizer before planting. Potatoes that did not receive N‐fertilizer had a markedly lower starch yield than potatoes that received N‐fertilizer. Potatoes that received the entire quantity of N‐fertilizer before planting had a lower starch yield than potatoes that received the entire quantity of N‐fertilizer at emergence or as split applications. CONCLUSION N‐fertilizer applied as a one‐time application at emergence or as a split application was the best treatment to ensure both high N content and lower attack of early blight, which confirms our hypothesis. © 2018 Society of Chemical Industry

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The influence of timing the application of nitrogen fertilizer on early blight (Alternaria solani)

Abuley

Nielsen

Hansen

2018

Pest Management Science

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“…Early blight, caused by Alternaria solani , is an important foliar disease of potatoes. The disease can cause substantial yield losses if not appropriately controlled (Abuley & Nielsen, ). Symptomatic lesions of early blight are characterized by dark concentric circles that are restricted within leaf veins.…”

Section: Introductionmentioning

confidence: 99%

“…Symptomatic lesions of early blight are characterized by dark concentric circles that are restricted within leaf veins. Control of early blight is achieved by frequent application of fungicides during the growing season (Abuley & Nielsen, ; Abuley, Nielsen, & Hansen, ). However, there is a need to optimize the application of fungicides within the context of integrated pest management (IPM) (Abuley & Nielsen, ).…”

Section: Introductionmentioning

confidence: 99%

The influence of crop rotation on the onset of early blight (Alternaria solani)

Abuley

Nielsen

Hansen

2018

Journal of Phytopathology

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Field experiments were carried out in 2016 and 2017 to determine the effect of crop rotation on the onset of early blight in three potato varieties in Denmark. Six and seven fields with different histories with potato (rotation‐fields) were used for the experiments in 2016 and 2017, respectively. The results showed that variety and the interaction between variety and rotation‐field had no significant effect on the onset of early blight. Rotation‐field, on the other hand, had a significant effect on the onset of early blight in both years of the study. Early blight occurred earlier in fields with <2 years between subsequent potato crops than in fields where potatoes have not been grown for at least 2 years. The onset of early blight was not different between the fields where there had not been potatoes for at least 2 years. For fields that were preceded by potatoes, early blight occurred earlier in fields in which the severity of early blight in the previous years was higher than that in the fields in which the severity of early blight in the previous years was low or moderate. In conclusion, the results of this study suggest that at least a 2‐year interval between subsequent potatoes in a rotation cycle is necessary to delay the onset of early blight. Moreover, the severity of early blight in the previous years can affect the onset of early blight.

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Review: Holistic pest management against early blight disease towards sustainable agriculture

Jindo

Evenhuis

Kempenaar

et al. 2021

Pest Management Science

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Alternaria species are well‐known aggressive pathogens that are widespread globally and warmer temperatures caused by climate change might increase their abundance more drastically. Early blight (EB) disease, caused mainly by Alternaria solani, and brown spot, caused by Alternaria alternata, are major concerns in potato, tomato and eggplant production. The development of EB is strongly linked to varieties, crop development stages, environmental factors, cultivation and field management. Several forecasting models for pesticide application to control EB were created in the last century and more recent scientific advances have included modern breeding technology to detect resistant genes and precision agriculture with hyperspectral sensors to pinpoint damage locations on plants. This paper presents an overview of the EB disease and provides an evaluation of recent scientific advances to control the disease. First of all, we describe the outline of this disease, encompassing biological cycles of the Alternaria genus, favorite climate and soil conditions as well as resistant plant species. Second, versatile management practices to minimize the effect of this pathogen at field level are discussed, covering their limitations and pitfalls. A better understanding of the underlying factors of this disease and the potential of novel research can contribute to implementing integrated pest management systems for an ecofriendly farming system. © 2021 The Authors. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.

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Evaluation of models to control potato early blight ( Alternaria solani ) in Denmark

Cited by 42 publications

References 23 publications

The influence of timing the application of nitrogen fertilizer on early blight (Alternaria solani)

The influence of timing the application of nitrogen fertilizer on early blight (Alternaria solani)

The influence of crop rotation on the onset of early blight (Alternaria solani)

Review: Holistic pest management against early blight disease towards sustainable agriculture

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