Selective weed control in field margins.
The importance of field margins for conservation is considered in relation to the deterioration of margin floras and potential weed problems arising at field edges. Using herbicides selectively to control the most damaging weed species, a compromise may be achieved between the needs of crop production and wildlife conservation. The management of crop edges as "conservation headlands", using selective herbicides, is described, and some preliminary data given indicating that the concept of selective weed control may be extended to the field boundary. It is concluded that there is a pressing need for further research into field boundary management.