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Updated: Feb 10, 2026
09:41
Blast Quantification Using Hopkinson Pressure Bars
Published on: July 5, 2016
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Spatial Analysis of Rice Blast in China at Three Different Scales
Fangfang Guo1, Xinglong Chen1, Minghong Lu1
1First, second, fourth, fifth, and sixth authors: Department of Plant Pathology, China Agricultural University, Beijing, 100193, China; and third author: National Agricultural Technology Extension and Service Center, Ministry of Agriculture of the People's Republic of China, Beijing, 100125, China.
Phytopathology
|May 23, 2018
Summary
Rice blast disease hotspots were identified in China
Area of Science:
- Plant Pathology
- Agricultural Science
- Spatial Epidemiology
Background:
- Rice blast, caused by Magnaporthe oryzae, is a significant threat to global rice production.
- Understanding the spatial epidemiology of rice blast is crucial for effective disease management.
Purpose of the Study:
- To analyze the spatial patterns of rice blast incidence at regional, county, and field scales in China.
- To identify disease hotspots and understand spatial dependence for improved sampling and management strategies.
Main Methods:
- Spatial cluster and hot spot analyses using GIS at the regional scale.
- Geostatistical analysis conducted across regional, county, and field scales.
- Monitoring and surveying rice blast incidence over multiple years and scales.
Main Results:
- High-incidence rice blast areas were found to cluster in mountainous regions of China.
- Significant spatial dependence of blast incidence was detected at regional (399–1,080 km) and field (5–10 m) scales.
- Spatial dependence was not detected at the county scale, suggesting scale-dependent disease dynamics.
Conclusions:
- Spatial patterns of rice blast are influenced by the pathogen's properties and environmental factors.
- Findings provide valuable insights for optimizing sampling designs and management interventions for rice blast.
- Scale-specific spatial analyses are essential for understanding and controlling rice blast epidemiology.
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