Weather fluctuation can override the effects of integrated nutrient management on fungal disease incidence in the rice fields in Taiwan

Both weather fluctuation and farming system influence the epidemiology of crop diseases. However, short-term experiments are difficult to mechanistically extrapolate into long-term ecological responses. Using a mechanistic model with Bayesian inference, long-term data spanning 10 years were used to...

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Published inScientific reports Vol. 12; no. 1; pp. 4273 - 9
Main Authors Chiu, Ming-Chih, Chen, Chi-Ling, Chen, Chun-Wei, Lin, Hsing-Juh
Format Journal Article
LanguageEnglish
Published London Nature Publishing Group UK 11.03.2022
Nature Publishing Group
Nature Portfolio
Subjects
631/158
631/158/2456
Bayes Theorem
Bayesian analysis
Crop diseases
Epidemiology
Farming
Farming systems
Fertilizer application
Fertilizers
Fungal diseases
Humanities and Social Sciences
Humans
Humidity
Incidence
multidisciplinary
Mycoses
Nutrients
Rain
Rainfall
Relative humidity
Rice
Rice blast
Rice fields
Science
Science (multidisciplinary)
Taiwan - epidemiology
Weather
Taiwan
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Summary:Both weather fluctuation and farming system influence the epidemiology of crop diseases. However, short-term experiments are difficult to mechanistically extrapolate into long-term ecological responses. Using a mechanistic model with Bayesian inference, long-term data spanning 10 years were used to construct relationships among weather fluctuation (temperature, relative humidity, wind, and rainfall), farming system (conventional and low-external-input farming), and crop disease in experimental rice fields in Taiwan. Conventional and low-external-input farming had similar influences on the disease incidence of rice blast. Temperature had a positive influence on the disease incidence only under high relative humidity. Rainfall positively affected the disease incidence until an optimum level of rainfall. Low-external-input farming, with a lower application of fertilizers and other sustainable nutrient management, achieved similar effects on the disease incidence to those achieved by conventional farming. This suggests that weather fluctuation may override the effect of the farming systems on fungal disease incidence in rice fields.
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ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-022-08139-7