Buffer zones for reducing pesticide drift to ditches and risks to aquatic organisms

被引:102
作者
de Snoo, GR [1 ]
de Wit, PJ [1 ]
机构
[1] Leiden Univ, Ctr Environm Sci, NL-2300 RA Leiden, Netherlands
关键词
pesticides; drift; ditches; buffer zones; risk assessment;
D O I
10.1006/eesa.1998.1678
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Pesticide drift from field sprayers fitted with different types of spray nozzles was investigated under various wind speed conditions. Droplet drift was measured adjacent to the sprayed field, on the ditch bank, and in the ditch. Measurements were carried out in the normal sprayed situation and with an unsprayed buffer zone 3 or 6 m aide. The results indicate that there are major differences between spray nozzles. Drift deposition increases,vith wind speed. In the sprayed situation and with a,wind speed of 0.5 m/s, there was a maximum of 6.0% drift deposition halfway down the ditch bank and no drift deposition in the ditch. At 3 m/s wind speed these figures are 25.1 and 2.2%, respectively. At 5 m/s wind speed, 7.2% drift deposition was measured in the ditch. Risk assessment (cf. SLOOTBOX model) carried out with 17 pesticides used in the study area indicated that at this sind speed, 8 of the 17 pesticides investigated posed a risk to aquatic organisms. Creation of a 3-m buffer zone decreases drift deposition in the ditch by a minimum of 95%, Adjacent to the buffer zone only 4 of the 17 pesticides investigated posed a (minor) risk to aquatic organisms. With a 6-m buffer zone no drift deposition in the ditch could be measured (wind speed maximum, 4.5 m/s). Creating unsprayed crop edges offers good possibilities for the protection of aquatic ecosystems. Socioeconomic research among farmers indicates that buffer zones, such as unsprayed cereal edges and unsprayed grass strips, could well be adopted in agricultural practice. (C) 1998 Academic Press
引用
收藏
页码:112 / 118
页数:7
相关论文
共 26 条
[1]  
BREEZE V, 1992, ANN APPL BIOL, V121, P667
[2]  
CUTHBERTSON PS, 1988, P BRIGHTON CROP PROT, P747
[3]   INSECTICIDE DRIFT FROM GROUND-BASED, HYDRAULIC SPRAYING OF PEAS AND BRUSSELS-SPROUTS - BIOASSAYS FOR DETERMINING BUFFER ZONES [J].
DAVIS, BNK ;
LAKHANI, KH ;
YATES, TJ ;
FROST, AJ ;
PLANT, RA .
AGRICULTURE ECOSYSTEMS & ENVIRONMENT, 1993, 43 (02) :93-108
[4]   BUFFER ZONE WIDTHS FOR HONEYBEES FROM GROUND AND AERIAL SPRAYING OF INSECTICIDES [J].
DAVIS, BNK ;
WILLIAMS, CT .
ENVIRONMENTAL POLLUTION, 1990, 63 (03) :247-259
[5]   BIOASSAYS OF INSECTICIDE SPRAY DRIFT - THE EFFECTS OF WIND-SPEED ON THE MORTALITY OF PIERIS-BRASSICAE LARVAE (LEPIDOPTERA) CAUSED BY DIFLUBENZURON [J].
DAVIS, BNK ;
LAKHANI, KH ;
YATES, TJ ;
FROST, AJ .
AGRICULTURE ECOSYSTEMS & ENVIRONMENT, 1991, 36 (3-4) :141-149
[6]  
De Snoo G. R., 1993, Mededelingen Faculteit Landbouwkundige en Toegepaste Biologische Wetenschappen Universiteit Gent, V58, P921
[7]  
DEJONG FMW, 1994, INT S CROP, V59, P347
[8]  
DESNOO GR, 1995, THESIS LEIDEN U
[9]  
DESNOO GR, 1993, P BRIGHT CROP PROT C, V2, P879
[10]   REDUCED PESTICIDE INPUTS ON CEREAL FIELD MARGINS - THE EFFECTS ON BUTTERFLY ABUNDANCE [J].
DOVER, J ;
SOTHERTON, N ;
GOBBETT, K .
ECOLOGICAL ENTOMOLOGY, 1990, 15 (01) :17-24