TY - SER AU - Ochoa Alejo,N. AU - Crocomo,O.J. TI - Biochemical and physiological aspects of sugarcane (Saccharum spp.). 2. Effect of NO3-N, NH4+-N and urea-N on carbohydrate level and growth of cv. NA56-79 [bioquimica vegetal, cana de acucar, nitrogenio] KW - NITROGENIO KW - CANA DE ACUCAR KW - UREIA ER -