Approaches used in the prediction of weed population dynamics
M J Kropff and L Bastiaans, Wageningen University and Research Centre, The Netherlands
R D Cousens, Institute of Land and Food Resources, University of Melbourne, Australia

Weed seed bank dynamics under herbicide tolerant crops
F Forcella, North Central Soil Conservation Research Laboratory, Minnesota, USA

Herbicide tolerant crops and weed population dynamics in western Canada
D A Derksen, Agriculture and Agri-Food Canada, Brandon, Canada
K N Harker, Agriculture and Agri-Food Canada, Lacombe, Canada
R E Blackshaw, Agriculture and Agri-Food Canada, Lethbridge, Canada

Weed species shifts in response to broad spectrum herbicides in sub-tropical and tropical crops
A M Mortimer and J E Hill, International Rice Research Institute, Manila, Philippines