1. Remote Sensed Spectral Imagery to Detect Late Blight in Field Tomatoes

   • Minghua Zhang
   • Zhihao Qin
   • Xue Liu

   OriginalPaper Pages: 489 - 508

2. Impact of Residual Soil Nitrate on In-Season Nitrogen Applications to Irrigated Corn Based on Remotely Sensed Assessments of Crop Nitrogen Status

   • Walter C. Bausch
   • Jorge A. Delgado

   OriginalPaper Pages: 509 - 519

3. Can Landform Stratification Improve Our Understanding of Crop Yield Variability?

   • H. I. Reuter
   • A. Giebel
   • O. Wendroth

   OriginalPaper Pages: 521 - 537

4. Determining the Influence of Water Deficiency on NPK Stress Discrimination in Maize using Spectral and Spatial Information

   • Lene K. Christensen
   • Shrinivasa K. Upadhyaya
   • David Hills

   OriginalPaper Pages: 539 - 550