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Climate change affects agriculture in some ways including changes in average temperatures, rainfall, and climate extremes with an important impact on pests and diseases. Several types of pests that arise as a result of the climate change and attacked corn plant is Spodoptera frungiperda. This study aims to analyze the relationship between various climate factors with the area affected by Spodoptera frugiperda in the Karo District, North Sumatera. The area used in this study is Karo District, North Sumatera because this is the area with the widest area affected by FAW on maize cropping. The highest area affected on maize in Karo District occurred in April of 1.533 ha. The analysis used in this research is multiple linear regression. Climate factor data are used as independent variables and area affected data as dependent variables. Based on data analysis with multiple linear regression owned by all factors influence on the area affected with a coefficient of determination (R2) of 0.882. Climate factors that have a significant influence on the area affected are rainfall.

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