1. Vision-based Navigation System for Autonomous Transportation Vehicle

   • Eiji Morimoto
   • Masahiko Suguri
   • Mikio Umeda

   OriginalPaper Pages: 239 - 254

2. Improving Map Accuracy of Soil Variables Using Soil Electrical Conductivity as a Covariate

   • Alison B. Tarr
   • Kenneth J. Moore
   • C. Lee Burras

   OriginalPaper Pages: 255 - 270

3. Comparison of Different Sampling Scales to Estimate Weed Populations in three Soybean Fields

   • F. Elizabeth LaMastus
   • David R. Shaw

   OriginalPaper Pages: 271 - 280

4. Maize Nitrogen Response as Affected by Soil Type and Drainage Variability

   • H. M. van Es
   • C. L. Yang
   • L. D. Geohring

   OriginalPaper Pages: 281 - 295

5. Apparent Electrical Conductivity, Soil Properties and Spatial Covariance in the U.S. Southern High Plains

   • K. F. Bronson
   • J. D. Booker
   • J. Booker

   OriginalPaper Pages: 297 - 311