Abstract: The effect of compost (0, 5, 10 and 20 ton/fed), rock amendments (0, 500, and 1000 kg/fed) and their combinations on some morphological parameters, yield and active ingredients of safflower (Carthamus tinctorius L.) was carried out in the field during 2006/2007 & 2007/2008 seasons. Two samples were taken after 150 and 190 day from planting. The obtained results indicated that all treatments achieved an increament in morphological parametres, carthamin of petals yield and oil content of seeds comparing with the control. As for the effect of single treatments on growth parameters and active ingredients, the compost 20 ton/fed and rock 1000 kg/fed revealed significant values than the control, except height with R1000 in both seasons. The combination of high concentration of compost (20 ton/fed) and rock phosphate (1000 kg/fed) recorded the highest values in this concern (except plant height and fatty acids charachters). Meanwhile, C20 led to obtain good quality of safflower oil by increasing unsaturated/saturated fatty acids ratio
