@ARTICLE {GUTO:2012, title = {Socio-ecological niches for minimum tillage and crop-residue retention in continuous maize cropping systems in smallholder farms of Central Kenya}, author = {Guto, S. N. and Pypers, P. and Vanlauwe, B. and de Ridder, N. and Giller, K. }, journal = {Agronomy Journal}, year = {2012}, volume = {103}, number = {3}, pages = {1--11}, issn = {0002-1962}, }