文档介绍：ABSTRACT 7 th International ICABR Conference Ravello, Italy, June 29, 30- July 1,2 and 3,2003 Productivity, Public Goods and Public Policy: agricultural biotechnology Potentials A NEW APPROACH TO THE MANAGEMENT OF ICALLY MODIFIED HERBICIDE TOLERANT CROPS FOR ENVIRONMENTAL BENEFIT Alan M. Dewar, Mike J. May, Lisa A. Haylock, Gillian T. Champion, Beulah H. Garner, Richard J. Sands, Aiming Qiand John D. Pidgeon Broom ’s Barn Research Station, Higham, Suffolk, UK Ian P. Woiwod Rothamsted Research, Harpenden, Herts, UK The proposed introduction of ically modified herbicide tolerant (GMHT) crops, with claims of improved weed control, has prompted fears about possible environmental impacts of their widespread adoption, particularly on arable weeds, insects and associated farmland birds. In conventional sugar beet, good weed control is essential to produce economically viable yields. Thus very few weeds are present throughout the season in most crops. However, the few crops that are weedy do offer a food source for birds. It is the potential loss of these weedy crops, amid general alarm over population decline of farmland bird species, that has prompted concerns about ically modified herbicide tolerant (GMHT) technology. Our novel approach to weed management in GMHT sugar beet exploits the much greater flexibility and efficacy of the broad-spectrum herbicides, glyphosate and glufosinat