Relationship Between Six Years of Corn Yields and Terrain Attributes

摘要: Crop yield, soil properties, and erosion are strongly related to terrain attributes. The objectives of our study were examine the relationship between six years corn (Zea mays L.) yield data relative elevation, slope, curvature, develop a linear regression model describe spatial patterns for 16 ha field in central Iowa, USA. Corn grain was measured crop years, elevation using kinematic global positioning system. Slope curvature then determined digital analysis. Our showed that four with less than normal growing season precipitation, negatively correlated curvature. In two greater positively slope. A multiple based on developed predicted 78% variability average transect plots dry years. This also adequately identified within entire monitor from 1997, which one attributes may provide opportunities implementing site-specific management.