The Influence of Interaction between the Phosphorus Fertilizer and Gibberellin on Elements Content of Lentil Crop (Lens culinaris Medic.)

An experiment was conducted in the greenhouse of Biology Department, College of Education (Ibn Al-Haithum), University of Baghdad, during the growing season 2009, by using plastic pots with capacity of two Kg of soil. The aim of the research was to s tudy the effect of different levels of diamonium phosphate fertilizer as phosphorus source and increased concentrations of gibberellin on elements content N, P, K, Ca and soluble carbohydrate percentage in vegetative part of lentil cultivar (Barka). Treatments comprised of three levels of fertilizer (0, 0.16, 0.32) g/pot this equal to (0, 40, 80) kg/do., three concentrations of GA3 (0, 50, 100)ppm and their interaction. The factorial experiment according to complete randomized design with three replicates. Results showed that significant differences by increase fertilizer levels, gibberellin concentrations and their interaction. The preference was for interaction of two mentioned above factors more than each one alone. Treatment with (0.32 g/ pot fertilizer and 100ppm gibberellin) gave the highest content of elements studied as compared with other treatments, since treatment with (0.32 g/ pot fertilizer and 50 ppm gibberellin) gave the highest soluble carbohydrate percentage as compared with other treatments.