DIAS-FILHO, M.B. 1999. Physiological responses of two tropical weeds to shade: II. Leaf gas exchange and nitrogen content. Pesquisa Agropecuária Brasileira. 34(6): 953-961.
DIAS-FILHO, M.B. 1999. Physiological responses of two tropical weeds to shade: II. Leaf gas exchange and nitrogen content. Pesquisa Agropecuária Brasileira. 34(6): 953-961.