Abstract: Experimental research was conducted in the laboratory of plant protection, department of plant production in Technical Institute / Mosul City in Iraq. On 08.10.2013 to 20.10.2013 .The experiment was include by planting(50) seed with two replication from (20)crop by using(25) Dodder seeds with each Petri dishes by addition a control treatment. Found the germination percentage of Dodder seeds as following: With Sorghum 90% ,With Flax 50%,with Piper 52% , with Egg plant 53% , with Alfalfa 57 % ,with Squash 5% , With Barley 7% , with Melon 8% , with Lentil 9% , with Wheat 10% , with Lettuce 2% , with Tomato 4% , with Millet 1% , there isn’t Dodder seeds emergence with Corn ,Bean, Watermelon , Cucumber , Buckwheat , Okra , Safflower. The emergence Dodder seeds alone as control was 4% , clear from above data ,the presence of crop seeds were necessary to germinate Dodder seeds with some crops, also Dodder cant able complete their life cycle by absence the host, which clear the impact of Dodder in growing stage of crop plant and reflects on yield, that require more studies about physiological process to find suitable control in emergence stage by using wild botanical extractions as biological control which consider friendship of ecology to achievement sustainable agricultural development.