THE INTERACTION EFFECT OF UREA AND DIAMMONIUM PHOSPHATE ( DAP ) FERTILIZERS ON SOME MORPHOLOGICAL CHARACTERISTICS OF LENTIL ( LENS CULINARIS MEDIC ) .

Abstract

A pot experiment was conducted in the green house of Biology Department, College of Education ( Ibn Al – Haitham ) , University of Baghdad , during the growing season 2009 . to study the interaction effect between applying Urea fertilizer at three levels ( 0 , 0.32 , 0.48 ) gm . pot-1 . which equal ( 0 , 80 , 120 ) kg . du-1 . and three levels of diammonium phosphate fertilizer ( 0 , 0.3 , 0.4 ) gm . pot-1 . which equal ( 0 , 75 , 100 ) kg . du-1 . in vegetative growth of lentil cultivar ( Baraka ) with in a completely randomized design with three replications. The results showed that increasing by Urea and DAP fertilizer levels significant increased the above mentioned characteristics ( plant height , dry matter weight , number of branches and pods , relative and absolute growth rate, biomass duration ). The influence of the interaction between Urea and DAP at level ( 120 – 100 ) kg . du-1. respectively , was positive giving the highest values of the studied characteristics .