In a nutshell

Arable land and environmental weeds

  • Weeding is man's lot or to put the gender or age right, women and children's lot.
  • Herbicides have gradually taken over the drudgery of hand weeding.
  • To know the pitfalls it is important to understand that

Herbicides are designed to kill green plants, their selectivity and efficacy are a question of dose.

This is essentially the content of this web-page.

Education and Employment

I hold a Ph.D. in Agricultural Sciences (Botany) and acquired my D.Sc. within the area of herbicide selectivity. I currently hold the positions:

  • Professor Emeritus of Weed Science at the Faculty Science, University of Copenhagen, Denmark  (UCPH).
  • Honorary and Distinguished Professor at the University of Mohaghegh Ardabili, Ardabil, Iran      (UMA)


Research and Expertise

My major research is in the area of herbicide selectivity, joint action of pesticide mixtures and ecotoxicology of pesticides. I also have worked with genetically modified crops and risk assessment. I have been involved in various national and international projects within my area of agricultural research and have had assignments in Africa and Asia. My teaching is primarily in Weed and Crop Science and pesticide use mode of action and ecotoxicology. I am a member of European Weed Research Society and served for 15 years as editor of Weed Research and three years as subject editor of Crop Protection. I held the office of Scientific Secretary for the European Weed Research Society (EWRS) for eight years. My updated publication list is available here


I am a technical adviser for Idea Tropical .IDEA Tropical is a leading provider of research and consulting services in weed management and herbicides for tropical crops. Board member of the board of   Agrolab AS   Agrolab is the leading research organisation in the EU north zone with experience dating back to 1984. Since then, Agrolab has successfully helped companies, by testing, developing and registering plant protection products in the EU (1107/2009).