Field experiment was connected in Hartha experiment station, Agric. College, Basra Univ. during 2012 growing season to study the effects of three urea(46% N, 100 , 200 , 300Kg.h-1) rates and super phosphate (P2O5 42% P ) fertilizers on yield components of Zea Mays L.(hybrid 3001and four levels of phosphor 40 ,50, 60,70 Kg.h-1. Significant grain yield increases were obtained from the application of two fertilizers in terms of plant heights, LAI, weight of 500 grain (g) and grain yield (g).
a Dawood Gatie, Basra University, Agric. College.
Kadem Kidami Al-Asady, Basra University, Agric. College.