Advances in Agronomy

<p>1. Current Sensor Technologies for In Situ and On-line Measurement of Soil Nitrogen for Variable Rate Fertilization: A Review<br>Angela Guerrero, Stefaan De Neve and Abdul M. Mouazen<br>2. Application of Molecular Biotechnology to Manage Biotic Stress Affecting Crop Enhancement and Sustainable Agriculture<br>Charles Oluwaseun Adetunji, Robert J. Kremer, Rasheed Makanjuola and Neera Bhalla Sarin<br>3. A Review of Time Domain Reflectometry (TDR) Applications in Porous Media<br>Hailong He, Gukailin Ao, Min Li, Jinghui Xu, Wenyi Sheng, Scott B. Jones, Juan D. Gonzalez Teruel, David A. Robinson, Robert Horton, Keith Bristow, Miles Dyck, Vilim Filipovic, Kosuke Noborio, Qingbai Wu, Huijun Jin, Hao Feng, Bingcheng Si, and Jialong Lv<br>4. Soil Health in Agricultural Ecosystems: Current Status and Future Perspectives<br>Gurpal S. Toor, Yun-Ya Yang, Srabani Das, Suzanne Dorsey and Gary Felton<br>5. Genetic Improvement of Crop Yield, Grain Protein and Nitrogen Use Efficiency of Wheat, Rice and Maize in China <br>Lin Liu, Victor O. Sadras, Jiaxing Xu, Changlu Hu, Xueyun Yang and Shulan Zhang</p>