Araújo de Sousa, M., Barbosa Lima, M.D., Simon, G.A. and de Sá Andrade, J.W. 2009. EFFECT OF WATER STRESS IN THE ROOT LENGTH DENSITY IN BEAN GROWTH STAGES. Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics]. 39, 1 (Feb. 2009), 25–30.