Abstract
Irrigation methods and sticky traps study of the leafhopper Empoasca decedens (Paoli) Which were conducted in AlRashidieh region during growing season 2006 and 2007 in two potatoes fields showed that the infestation of leafhopper started in the third week of September with an average of 0.6 adult and reached its peak in the fourth week of November with an average 19.4 adults using hunting hand net double blow in both two fields The study also indicated that the heights population density of insect eggs was in the fourth week of September with an average of 6 and 2.4 eggs respectively in both fields these averages have increased, reaching a peak in the third week of November with an average 23 and 10.4 eggs respectively, the study also indicated that the population density of Nymphs reached a maximum amount during the second and fourth week of November with an average of 19.6 and 8.2 Nymph in both fields respectively, while the lower average was in the third week of September with r an average o f3.2 and 3 Nymph when the stick yellow traps were used the result shows that the best dimensions of was 60 × 60 cm at 25 cm from the level of earth also found that the best direction was the Eastern, the North ,the South and last West with an average 59.8 ,39.5, 28.58 and 26.87 adults respectively. The study also showed that the best irrigation way to reduce insect population sprays was the irrigation giving lower of adult 20.77 comprise with the irrigation by flooding irrigated which given was 56.60 adult
