Combination effect of different levels of Nitrogen, Phosphorus and Potassium on the yield of Chickpea Plant (Cicera rietinum L.)

This experiment was conducted at Grdarasha field of the College of Agricultural Engineering Science, Salahaddin University in Erbil, with a Clay Loam texture class. During the spring growing season of 2020, to study the effect of four levels of phosphorus TSP (0, 20, 40, 60) Kg P. ha-1. Three levels of K (0, 15, 30) Kg K. ha-1 and three levels of N (0, 15, 30) Kg N. ha-1. Besides, there was a combination of yield components and nutrient balance of the chickpea plant using a splitblock design with three factors (K, N and P), where 36 treatment with 3 replicates was used. The main results could be summarized as follows: The combination of potassium, nitrogen, and phosphorus levels affected the yield of the chickpea plant significantly. Also, the maximum yield recorded in the treatment combination (K2N1P2) was (1.55 Mg ha-1). In comparison, the lowest mean value (0.73 Mg ha-1) was recorded from the treatment combination (K0N0P0). Keywords: Nitrogen, Phosphorus, Potassium, chemical and physical properties, chickpea yield