Population Dynamics of Arthropod Pests on Grapevine and Chemical Control of the Grape Berry Moth Lobesia botrana Schiff. (Lep., Tortricidae) in Jerash Area, Jordan

Grapevine, Vitis vinifera L. is infested by several pests in Jordan, especially grape berry moth, Lobesia botrana Schiff. (Lep., Tortricidae), which inflicts heavy losses to the crop. Therefore, population dynamics of arthropod pests were studied on grapevine in 1995 and 1996 seasons in Jerash area. Also, four insecticides were tested to control L. botrana. The results indicated that L. botrana attacked grapevine during the whole season. The insect has four generations a year, where the second and third ones are the important on grapevine; therefore, it is considered a key pest. Leafhopper, Empoasca lybica and eriophid mite, Eriophyes vitis found in large numbers, so that, they are considered potential pests. Aphid, Aphis gossypii; thrips, Thrips tabaci and black vine thrips, Retithrips syriacus were present in small numbers, therefore, they are considered non-significant pests. Also, the results showed that all the tested insecticides significantly reduced the infestation by L. botrana.