The Use of Yellow Sticky Traps to Estimate He Population Density of Insects Accompanying Squash and Cucumber Plants in The Field

The research was performed in AL -Namrud district, south of Mosul city, in autumn season/ 2020 to determine the seasonal presence of insects that accompanying each of the cucumber and marrow, planted in rate 28 row. yellow sticky traps were used for the period from 19/ September until 31/ October, which were placed in the four directions (North, South, East and West) to find out the best direction for catching insects. The results showed that the two plants were infected with insects, aphid and leafhopper and white fly also cucurbit fly insect. Showed the highest average to aphid Aphis gossypi (Glover) 89,33 insect / trap on southern direction in 17/10 And on the cucumber plant. As for the leafhopper insect Empoasca desedens (Poali) showed highest average for insect 79 insect / trap on Northern direction in 31/10 to cucumber plant, While the highest average was recorded for an insect white fly 125 insect / trap on the southern direction in 19/9 on the cucumber plant. while yellow sticky traps did not succeed in Catching a large number of whole insects of the cucurbit fly Dacus ciliatus (Loew) showed highest average 1.33 insect / Trap on the Northern direction in 31/10 on marrow plant.