title: A Primary Screening and Applying of Plant Volatiles as Repellents to Control Whitefly Bemisia tabaci (Gennadius) on Tomato.
abstract: With the goal of finding a new way to reduce population densities of Bemisia tabaci biotype Q in greenhouses, seven repellent volatile chemicals and their combinations were screened. The mixture of DLCO (D-limonene, citral and olive oil (63:7:30)) had a better cost performance(SC50 = 22.59 mg/ml)to repel whiteflies from settling than the other mixtures or single chemicals. In the greenhouse, in both the choice test and the no-choice tests, the number of adult whiteflies that settled on 1% DLCO-treated tomato plants was significantly lower than those settling on the control plants for the different exposure periods (P < 0.01). In the choice test, the egg amount on the treated tomato plants was significantly lower (P < 0.01) than that on the control plants, but there was no significant difference (P > 0.05) between the number of eggs on treated and control plants in the no-choice test. Compared with the controls, 1% DLCO did not cause significantly statistic mortality rates (P > 0.05) out of different living stages of B. tabaci. The tests for evaluating the repellent efficacy, showed that a slow-releasing bottle containing the mixture had a period of efficacy of 29 days, and the application of this mixture plus a yellow board used as a push-pull strategy in the greenhouse was also effective.
authors.affiliation: Department of Entomology, China Agricultural University, Beijing 100193, China.
authors.forename: Wenxiao
authors.initials: W
authors.lastname: Du
authors.affiliation: Tangshan Academy of Agricultural Sciences, Tangshan City 063001, China.
authors.forename: Xiaoqing
authors.initials: X
authors.lastname: Han
authors.affiliation: Dry-Land Farming Institute of Hebei Academy of Agricultural and Forestry Sciences, Hengshui 053000, China.
authors.forename: Yubo
authors.initials: Y
authors.lastname: Wang
authors.affiliation: Department of Entomology, China Agricultural University, Beijing 100193, China.
authors.forename: Yuchuan
authors.initials: Y
authors.lastname: Qin
mesh_terms: D000704:Analysis of Variance; D000818:Animals; D053138:Cyclohexenes / Q000302:isolation & purification / Q000633:toxicity; D004780:Environment, Controlled; D006430:Hemiptera / Q000187:drug effects* / Q000254:growth & development; D007300:Insect Control / Q000379:methods; D007302:Insect Repellents / Q000302:isolation & purification / Q000633:toxicity*; D000077222:Limonene; D016014:Linear Models; D018551:Solanum lycopersicum / Q000469:parasitology*; D009822:Oils, Volatile / Q000302:isolation & purification / Q000633:toxicity; D000069463:Olive Oil / Q000302:isolation & purification / Q000633:toxicity; D010270:Parasite Egg Count; D010935:Plant Diseases / Q000469:parasitology; D010938:Plant Oils / Q000302:isolation & purification / Q000633:toxicity; D010944:Plants / Q000737:chemistry*; D013729:Terpenes / Q000302:isolation & purification / Q000633:toxicity; D018675:Toxicity Tests / Q000379:methods; D055549:Volatile Organic Compounds / Q000302:isolation & purification / Q000633:toxicity*
chemical_list: D053138:Cyclohexenes; D007302:Insect Repellents; D009822:Oils, Volatile; D000069463:Olive Oil; D010938:Plant Oils; D013729:Terpenes; D055549:Volatile Organic Compounds; D000077222:Limonene