title: [Integrated control of pests injuring Chinese hawthorn Crataegus pinatifida Bge. var. major N.E.Br. by nonpollution techniques].
abstract: Field experiments on integrated control of pests injuring Chinese hawthorn by some nonpollution techniques including agricultural biological and physical methods, were carried out in Xinglong County, Hebei Province during 1989-1991. Satisfactory results were obtained. Compared with synthetic pesticides, the new techniques improve the control effect by 30%-60% generally, increase the number of natural enemies by 51.26%-68.51%, and enhance the yield by 47.58%. The test shows that the hawthorns from the field treated by the new techniques are either free of pesticide residual or with a residual 500-1000 times less than the residual standard fixed by FAO/WHO or the state.
authors.affiliation: Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences, Beijing.
authors.forename: Y
authors.initials: Y
authors.lastname: Fan
authors.forename: C Q
authors.initials: CQ
authors.lastname: Yang
authors.forename: L J
authors.initials: LJ
authors.lastname: Yang
authors.forename: H
authors.initials: H
authors.lastname: Zhang
authors.forename: J W
authors.initials: JW
authors.lastname: Dong
mesh_terms: D000818:Animals; D004365:Drugs, Chinese Herbal / Q000737:chemistry; D005638:Fruit / Q000254:growth & development; D010572:Pest Control, Biological; D010573:Pesticide Residues / Q000032:analysis; D010935:Plant Diseases; D010946:Plants, Medicinal / Q000254:growth & development*
chemical_list: D004365:Drugs, Chinese Herbal; D010573:Pesticide Residues