Sophie von Fromm, Dartmouth College, Biological Sciences, Hanover, NH, United States, Rose Z Abramoff, University of Maine, Orono, United States, Christopher Anuo, Purdue University, West Lafayette, United States, Steve Kwatcho Kengdo, Lawrence Berkeley National Laboratory, Earth and Environmental Sciences Area, Berkeley, United States, Stephen B. Asabere, Georg-August-Universitaet Goettingen, Goettingen, Germany, Jeanette Kanyiri, University of Nairobi, Nairobi, Kenya, Kwabena Nketia, University of Saskatchewan, Department of Plant Sciences, Saskatoon, SK, Canada, Katherine Rocci, Colorado State University, Soil and Crop Sciences, Fort Collins, United States, Admore Mureva, Bindura University of Science Education, Bindura, Zimbabwe and Lei Zhang, Lawrence Berkeley National Laboratory, Berkeley, United States