Silva, C.C. da and Silveira, P.M. da 2007. DIFFERENT AGRICULTURAL SYSTEMS AND THEIR EFFECTS ON IRRIGATED COMMON BEAN (Phaseolus vulgaris L.) RESPONSE TO NITROGEN TOPDRESSING. Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics]. 30, 1 (Dec. 2007), 87–96.