ABSTRACT


Isabel San Cristóbal de Ramírez1
 

The effect of four leyels of nitrogen (0.64-128 and 192 units/ha.) was studied on hybrid maize populations of 15.000-75.000 plants per hectare, in 17 trials distributed in two zones, cluring four seasons. Results indicated a possitiye nitrogen-population interaction. 60.000 ane! 75.000 plants/ha. amI high rates of nitrogen (100 to 200 units/ha.) gaye the greatest yields.

Keywords:
1 Ingeniero Agrónomo, Proyecto Tecnología del Uso de Fertilizantes, Estación Experimental La Platina, Instituto de Investigaciones Agropecuarias.