Advances in Agronomy

<p>1. Designing Intercrops for High Yield, Yield Stability and Efficient Use of Resources: Are There Principles?<br>TjeerdJan Stomph, Christos Dordas, Alain Baranger, Laurent Bedoussac, Joshua de Rijk, Bei Dong, Jochem Evers, Chunfeng Gu, Long Li, Johan Simon, Erik Steen Jensen, Qi Wang, Yuyun Wang, Zishen Wang, Huasen Xu, Chaochun Zhang, Lizhen Zhang, Wei-Ping Zhang and Wopke van der Werf<br>2. The Chemical Nature of Soil Organic Phosphorus – A Critical Review and Global Compilation of Quantitative Data<br>Timothy L. McLaren, Ronald J. Smernik, Michael J. McLaughlin, Ashlea L. Doolette, Alan E. Richardson and Emmanuel Frossard<br>3. Soil Horizon Variation – A Review<br>A. E. Hartemink, Y. Zhang, J. G. Bockheim, N. Curi, S. H. G. Silva, J. Grauer-Gray, D. J. Lowe, P. Krasilnikov<br>4. Tracing the Dynamics of Animal Excreta N in the Soil-plant-atmosphere Continuum using 15N Enrichment<br>Phillip M. Chalk, Caio T. Inacio and Deli Chen<br>5. A Review of Copper Speciation and Transformation in Plant and Soil/Wetland Systems<br>Peiman Zandi, Jianjun Yang, Katarzyna Mozdzen and Beata Barabasz-Krasny<br>6. A Biogeochemical View of the World Reference Base Soil Classification System. Homage to Ward Chesworth<br>Felipe Macias Vazquez, Marta Camps-Arbestain</p>