Dr Zed Rengel is Professor of Soil Science and Plant Nutrition at the University of Western Australia. An internationally-renowned expert on plant nutrition, Professor Rengel is co Editor-in-Chief of Crop and Pasture Science, Editor of the Journal of Plant Nutrition, Associate Editor of the Journal of Plant Physiology, as well as being on the editorial board of several other journals. He has published 7 books and more than 400 articles, has held a number of Honorary and Visiting Professorships and been elected a Foreign Fellow of the Croatian Academy of Arts and Sciences. His h-index is 85 (Google Scholar) or 64 (Clarivate Analytics All Databases, Web of Science).

• Part 1 Primary macronutrients: nitrogen1.Advances in understanding the nitrogen cycle in crop production: David Pilbeam, University of Leeds, UK; 2.Advances in understanding uptake and utilization of nitrogen in wheat: Ajit S. Nehe and M. John Foulkes, University of Nottingham, UK; 3.Advances in optimising nitrogen-use efficiency in crop production: J. F. Angus, CSIRO Agriculture and Food and Graham Centre – Charles Sturt University, Australia; Part 2 Primary macronutrients: phosphorus;4.Advances in understanding crop use of phosphorus: Timothy S. George and Philip J. White, The James Hutton Institute, UK; 5.Advances in understanding the environmental effects of phosphorus fertilization: Andrew N. Sharpley, University of Arkansas, USA; 6.Enhancing phosphorus-use efficiency in crop production: J. L. Havlin, North Carolina State University, USA; and A. J. Schlegel, Kansas State University, USA; Part 3 Primary macronutrients: potassium7.Advances in understanding the potassium cycle in crop production: Qifu Ma and Richard Bell, Murdoch University, Australia; 8.Potassium in crop physiology: Philip J. White, The James Hutton Institute, UK; 9.Advances in optimizing potassium-use efficiency in crop production: Kaushik Majumdar, African Plant Nutrition Institute and Mohammed VI Polytechnic University, Morocco; Meenu Rani, formerly ICAR-Indian Institute of Farming Systems Research, India; T. Scott Murrell, African Plant Nutrition Institute and Mohammed VI Polytechnic University, Morocco and Purdue University, USA; Sudarshan Dutta, African Plant Nutrition Institute and Mohammed VI Polytechnic University, Morocco; T. Satyanarayana, formerly International Plant Nutrition Institute, India; V. K. Singh, ICAR-Indian Agricultural Research Institute, India; Jagadish Timsina, University of Melbourne, Australia and CIMMYT, Bangladesh; and B. S. Dwivedi, ICAR-Indian Agricultural Research Institute, India; Part 4 Secondary macronutrients and micronutrients10.Secondary macronutrients: advances in understanding calcium cycling in soils, uptake/use by plants and ways of optimizing calcium-use efficiency in crop production: Milan Mesic, Zeljka Zgorelec, Aleksandra Percin, Igor Bogunovic and Darija Bilandzija, University of Zagreb, Croatia; 11.The effect of soil organic matter on plant mineral nutrition: O. Urrutia, J. Erro, M. Fuentes, M. Olaetxea and M. Garnica, University of Navarra, Spain; R. Baigorri, TIMAC AGRO, UK; A. M. Zamarreño, M. Movila and D. De Hita, University of Navarra, Spain; and J. M. Garcia-Mina, University of Navarra, Spain and Centre Mondial De L’Innovation Roullier, France; 12.Advances in understanding iron cycling in soils, uptake/use by plants and ways of optimising iron-use efficiency in crop production: Yashbir Singh Shivay and Sunil Mandi, ICAR – Indian Agricultural Research Institute, India; 13.Current advances in zinc in soils and plants: implications for zinc efficiency and biofortification studies: Gokhan Hacisalihoglu, Florida A&M University, USA; and Matthew W. Blair, Tennessee State University, USA; 14.Advances in understanding boron cycling in soils, uptake/use by plants and ways of optimizing boron use efficiency in crop production: Heiner E. Goldbach, University of Bonn, Germany; 15.Micronutrients: advances in understanding manganese cycling in soils, acquisition by plants and ways of optimizing manganese efficiency in crops: Sidsel Birkelund Schmidt and Søren Husted, University of Copenhagen, Denmark; 16.Micronutrients: advances in understanding molybdenum in crop production: Aruna Nandety and Ali M. Missaoui, University of Georgia-Athens, USA; Part 5 Optimising fertilizer use17.Advances in assessing nutrient availability in soils: Frederikke N. Mikkelsen, Maria M. Rieckmann and Kristian H. Laursen, University of Copenhagen, Denmark; 18.Advances in integrated plant nutrient management: Bijay-Singh, Punjab Agricultural University, India; and Ali M. Ali, Desert Research Center, Egypt; 19.Developments in the use of fertilizers: Bryan G. Hopkins, Brigham Young University, USA; 20.Bio-effectors to optimize the mineral nutrition of crop plants: Markus Weinmann and Günter Neumann, University Hohenheim, Germany; 21.Advances in fertigation techniques to optimize crop nutrition: Asher Bar-Tal, Uri Yermiyahu and Alon Ben-Gal, Agricultural Research Organization (ARO), Israel; 22.Advances in foliar fertilizers to optimize crop nutrition: Victoria Fernández, Technical University of Madrid, Spain; and Héctor A. Bahamonde, Instituto Nacional de Tecnología Agropecuaria (INTA), Argentina; 23.Optimizing the use of treated wastes in crop nutrition: Sylvia Kratz, Kerstin Panten, Ewald Schnug and Elke Bloem, Julius Kühn-Institute, Germany;

Dr Zed Rengel is Professor of Soil Science and Plant Nutrition at the University of Western Australia. An internationally-renowned expert on plant nutrition, Professor Rengel is co Editor-in-Chief of Crop and Pasture Science, Editor of the Journal of Plant Nutrition, Associate Editor of the Journal of Plant Physiology, as well as being on the editorial board of several other journals. He has published 7 books and more than 400 articles, has held a number of Honorary and Visiting Professorships and been elected a Foreign Fellow of the Croatian Academy of Arts and Sciences. His h-index is 85 (Google Scholar) or 64 (Clarivate Analytics All Databases, Web of Science).

• Part 1 Primary macronutrients: nitrogen1.Advances in understanding the nitrogen cycle in crop production: David Pilbeam, University of Leeds, UK; 2.Advances in understanding uptake and utilization of nitrogen in wheat: Ajit S. Nehe and M. John Foulkes, University of Nottingham, UK; 3.Advances in optimising nitrogen-use efficiency in crop production: J. F. Angus, CSIRO Agriculture and Food and Graham Centre – Charles Sturt University, Australia; Part 2 Primary macronutrients: phosphorus;4.Advances in understanding crop use of phosphorus: Timothy S. George and Philip J. White, The James Hutton Institute, UK; 5.Advances in understanding the environmental effects of phosphorus fertilization: Andrew N. Sharpley, University of Arkansas, USA; 6.Enhancing phosphorus-use efficiency in crop production: J. L. Havlin, North Carolina State University, USA; and A. J. Schlegel, Kansas State University, USA; Part 3 Primary macronutrients: potassium7.Advances in understanding the potassium cycle in crop production: Qifu Ma and Richard Bell, Murdoch University, Australia; 8.Potassium in crop physiology: Philip J. White, The James Hutton Institute, UK; 9.Advances in optimizing potassium-use efficiency in crop production: Kaushik Majumdar, African Plant Nutrition Institute and Mohammed VI Polytechnic University, Morocco; Meenu Rani, formerly ICAR-Indian Institute of Farming Systems Research, India; T. Scott Murrell, African Plant Nutrition Institute and Mohammed VI Polytechnic University, Morocco and Purdue University, USA; Sudarshan Dutta, African Plant Nutrition Institute and Mohammed VI Polytechnic University, Morocco; T. Satyanarayana, formerly International Plant Nutrition Institute, India; V. K. Singh, ICAR-Indian Agricultural Research Institute, India; Jagadish Timsina, University of Melbourne, Australia and CIMMYT, Bangladesh; and B. S. Dwivedi, ICAR-Indian Agricultural Research Institute, India; Part 4 Secondary macronutrients and micronutrients10.Secondary macronutrients: advances in understanding calcium cycling in soils, uptake/use by plants and ways of optimizing calcium-use efficiency in crop production: Milan Mesic, Zeljka Zgorelec, Aleksandra Percin, Igor Bogunovic and Darija Bilandzija, University of Zagreb, Croatia; 11.The effect of soil organic matter on plant mineral nutrition: O. Urrutia, J. Erro, M. Fuentes, M. Olaetxea and M. Garnica, University of Navarra, Spain; R. Baigorri, TIMAC AGRO, UK; A. M. Zamarreño, M. Movila and D. De Hita, University of Navarra, Spain; and J. M. Garcia-Mina, University of Navarra, Spain and Centre Mondial De L’Innovation Roullier, France; 12.Advances in understanding iron cycling in soils, uptake/use by plants and ways of optimising iron-use efficiency in crop production: Yashbir Singh Shivay and Sunil Mandi, ICAR – Indian Agricultural Research Institute, India; 13.Current advances in zinc in soils and plants: implications for zinc efficiency and biofortification studies: Gokhan Hacisalihoglu, Florida A&M University, USA; and Matthew W. Blair, Tennessee State University, USA; 14.Advances in understanding boron cycling in soils, uptake/use by plants and ways of optimizing boron use efficiency in crop production: Heiner E. Goldbach, University of Bonn, Germany; 15.Micronutrients: advances in understanding manganese cycling in soils, acquisition by plants and ways of optimizing manganese efficiency in crops: Sidsel Birkelund Schmidt and Søren Husted, University of Copenhagen, Denmark; 16.Micronutrients: advances in understanding molybdenum in crop production: Aruna Nandety and Ali M. Missaoui, University of Georgia-Athens, USA; Part 5 Optimising fertilizer use17.Advances in assessing nutrient availability in soils: Frederikke N. Mikkelsen, Maria M. Rieckmann and Kristian H. Laursen, University of Copenhagen, Denmark; 18.Advances in integrated plant nutrient management: Bijay-Singh, Punjab Agricultural University, India; and Ali M. Ali, Desert Research Center, Egypt; 19.Developments in the use of fertilizers: Bryan G. Hopkins, Brigham Young University, USA; 20.Bio-effectors to optimize the mineral nutrition of crop plants: Markus Weinmann and Günter Neumann, University Hohenheim, Germany; 21.Advances in fertigation techniques to optimize crop nutrition: Asher Bar-Tal, Uri Yermiyahu and Alon Ben-Gal, Agricultural Research Organization (ARO), Israel; 22.Advances in foliar fertilizers to optimize crop nutrition: Victoria Fernández, Technical University of Madrid, Spain; and Héctor A. Bahamonde, Instituto Nacional de Tecnología Agropecuaria (INTA), Argentina; 23.Optimizing the use of treated wastes in crop nutrition: Sylvia Kratz, Kerstin Panten, Ewald Schnug and Elke Bloem, Julius Kühn-Institute, Germany;

Dr Zed Rengel is Professor of Soil Science and Plant Nutrition at the University of Western Australia. An internationally-renowned expert on plant nutrition, Professor Rengel is co Editor-in-Chief of Crop and Pasture Science, Editor of the Journal of Plant Nutrition, Associate Editor of the Journal of Plant Physiology, as well as being on the editorial board of several other journals. He has published 7 books and more than 400 articles, has held a number of Honorary and Visiting Professorships and been elected a Foreign Fellow of the Croatian Academy of Arts and Sciences. His h-index is 85 (Google Scholar) or 64 (Clarivate Analytics All Databases, Web of Science).

• Part 1 Primary macronutrients: nitrogen1.Advances in understanding the nitrogen cycle in crop production: David Pilbeam, University of Leeds, UK; 2.Advances in understanding uptake and utilization of nitrogen in wheat: Ajit S. Nehe and M. John Foulkes, University of Nottingham, UK; 3.Advances in optimising nitrogen-use efficiency in crop production: J. F. Angus, CSIRO Agriculture and Food and Graham Centre – Charles Sturt University, Australia; Part 2 Primary macronutrients: phosphorus;4.Advances in understanding crop use of phosphorus: Timothy S. George and Philip J. White, The James Hutton Institute, UK; 5.Advances in understanding the environmental effects of phosphorus fertilization: Andrew N. Sharpley, University of Arkansas, USA; 6.Enhancing phosphorus-use efficiency in crop production: J. L. Havlin, North Carolina State University, USA; and A. J. Schlegel, Kansas State University, USA; Part 3 Primary macronutrients: potassium7.Advances in understanding the potassium cycle in crop production: Qifu Ma and Richard Bell, Murdoch University, Australia; 8.Potassium in crop physiology: Philip J. White, The James Hutton Institute, UK; 9.Advances in optimizing potassium-use efficiency in crop production: Kaushik Majumdar, African Plant Nutrition Institute and Mohammed VI Polytechnic University, Morocco; Meenu Rani, formerly ICAR-Indian Institute of Farming Systems Research, India; T. Scott Murrell, African Plant Nutrition Institute and Mohammed VI Polytechnic University, Morocco and Purdue University, USA; Sudarshan Dutta, African Plant Nutrition Institute and Mohammed VI Polytechnic University, Morocco; T. Satyanarayana, formerly International Plant Nutrition Institute, India; V. K. Singh, ICAR-Indian Agricultural Research Institute, India; Jagadish Timsina, University of Melbourne, Australia and CIMMYT, Bangladesh; and B. S. Dwivedi, ICAR-Indian Agricultural Research Institute, India; Part 4 Secondary macronutrients and micronutrients10.Secondary macronutrients: advances in understanding calcium cycling in soils, uptake/use by plants and ways of optimizing calcium-use efficiency in crop production: Milan Mesic, Zeljka Zgorelec, Aleksandra Percin, Igor Bogunovic and Darija Bilandzija, University of Zagreb, Croatia; 11.The effect of soil organic matter on plant mineral nutrition: O. Urrutia, J. Erro, M. Fuentes, M. Olaetxea and M. Garnica, University of Navarra, Spain; R. Baigorri, TIMAC AGRO, UK; A. M. Zamarreño, M. Movila and D. De Hita, University of Navarra, Spain; and J. M. Garcia-Mina, University of Navarra, Spain and Centre Mondial De L’Innovation Roullier, France; 12.Advances in understanding iron cycling in soils, uptake/use by plants and ways of optimising iron-use efficiency in crop production: Yashbir Singh Shivay and Sunil Mandi, ICAR – Indian Agricultural Research Institute, India; 13.Current advances in zinc in soils and plants: implications for zinc efficiency and biofortification studies: Gokhan Hacisalihoglu, Florida A&M University, USA; and Matthew W. Blair, Tennessee State University, USA; 14.Advances in understanding boron cycling in soils, uptake/use by plants and ways of optimizing boron use efficiency in crop production: Heiner E. Goldbach, University of Bonn, Germany; 15.Micronutrients: advances in understanding manganese cycling in soils, acquisition by plants and ways of optimizing manganese efficiency in crops: Sidsel Birkelund Schmidt and Søren Husted, University of Copenhagen, Denmark; 16.Micronutrients: advances in understanding molybdenum in crop production: Aruna Nandety and Ali M. Missaoui, University of Georgia-Athens, USA; Part 5 Optimising fertilizer use17.Advances in assessing nutrient availability in soils: Frederikke N. Mikkelsen, Maria M. Rieckmann and Kristian H. Laursen, University of Copenhagen, Denmark; 18.Advances in integrated plant nutrient management: Bijay-Singh, Punjab Agricultural University, India; and Ali M. Ali, Desert Research Center, Egypt; 19.Developments in the use of fertilizers: Bryan G. Hopkins, Brigham Young University, USA; 20.Bio-effectors to optimize the mineral nutrition of crop plants: Markus Weinmann and Günter Neumann, University Hohenheim, Germany; 21.Advances in fertigation techniques to optimize crop nutrition: Asher Bar-Tal, Uri Yermiyahu and Alon Ben-Gal, Agricultural Research Organization (ARO), Israel; 22.Advances in foliar fertilizers to optimize crop nutrition: Victoria Fernández, Technical University of Madrid, Spain; and Héctor A. Bahamonde, Instituto Nacional de Tecnología Agropecuaria (INTA), Argentina; 23.Optimizing the use of treated wastes in crop nutrition: Sylvia Kratz, Kerstin Panten, Ewald Schnug and Elke Bloem, Julius Kühn-Institute, Germany;