1. Effects of agricultural intensification on soil biodiversity and implications for ecosystem functioning: A meta-analysis Marie-Anne de Graaff, Nicole Hornslein, Heather L. Throop, Paul Kardol and Linda T.A. van Diepen 2. Cakile maritima, a promising model for halophyte studies and a putative cash crop for saline agriculture Delphine Arbelet-Bonnin, Ibtissem Ben Hamed-Louati, Patrick Laurenti, Chedly Abdelly, Karim Ben Hamed and Francois Bouteau 3. Metal bioavailability and the soil microbiome Tarah S. Sullivan and Geoffrey M. Gadd 4. Breeding strategies for structuring salinity tolerance in wheat Abdul Mujeeb-Kazi, Rana Munns, Awais Rasheed, Francis C. Ogbonnaya, Niaz Ali, Philip Hollington, Ian Dundas, Nasir Saeed, Richard Wang, Pichu Rengasamy, Muhammad Sohail Saddiq, Jose Luis Diaz de Leon, Muhammad Ashraf and Sanjaya Rajaram 5. Review of existing knowledge on soil crusting in South Africa Michiel Christiaan Laker and Gerhardus Petrus Nortje 6. New directions for integrated weed management: Modern technologies, tools and knowledge discovery Nicholas E. Korres, Nilda R. Burgos, Ilias Travlos, Maurizio Vurro, Thomas K. Gitsopoulos, Vijaya K. Varanasi, Stephen O. Duke, Per Kudsk, Chad Brabham, Christopher E. Rouse and Reiofeli Salas-Perez