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Fertilization is one of the efforts done by farmers to increase the production and quality of onions. The research aimed to find out the effect of different levels of nitrogen, phosphorus, and potassium fertilizers on the growth and production of onions. The research was conducted in the Grdarash field, the experimental farm of the College of Agric...
The research was taken place in Grdarash field the experimental farm of the College of Agriculture Engineering Science, Salahaddin University Erbil . Spilt-spilt plot design was used in the field with different NPK-fertilizer applications [ Nitrogen ( 0 , 40 , 80, 160 ) , Phosphorus ( 0 , 80 , 160 ) and Potassium ( 0 , 50 , 100 ) Kg ha -1 ] .The am...