title: The effect of pre spring spray to reduce of citrus important pests.
abstract: The importance of pre spring spray against citrus aphids, Pulvinaria aurantii Cockerell and Panonychus citri McGregor that are the most important pest of citrus during spring was tested. In this research, 150 trees ten years old sweet orange (Thomson navel on Citrus aurantium (root stocks)) in a citrus orchard approximately three hectares sampled. The experiment was laid out in a totally randomized (one-way) design replicated five times. According to the results, the pre spring spray do not effect on population density of citrus aphids and P. aurantii during March, April, May and June. However, the P. citri population decreased. Therefore, it seems the pre spring spray in citrus orchards is not necessary, but if P. citri is observed, the pre spring spray should be recommended.
authors.affiliation: Department of Entomology, Faculty of Agriculture, Islamic Azad University, Arak, Iran.
authors.forename: B
authors.initials: B
authors.lastname: Hashemi
authors.forename: M R
authors.initials: MR
authors.lastname: Damavandian
authors.forename: R Vafaei
authors.initials: RV
authors.lastname: Shoushtaril
authors.forename: B
authors.initials: B
authors.lastname: Tafaghodynia
mesh_terms: D000818:Animals; D001042:Aphids / Q000254:growth & development / Q000472:pathogenicity; D002957:Citrus / Q000187:drug effects* / Q000469:parasitology*; D007300:Insect Control / Q000379:methods*; D007306:Insecticides / Q000008:administration & dosage*; D012621:Seasons
chemical_list: D007306:Insecticides