Practice Relating to Rule 76. Herbicides
In 1969, during a debate in the UN General Assembly on the question of chemical and bacteriological (biological) weapons, Sweden stated:
195. It has … been said that, in any case, the prohibitory rule [concerning chemical weapons] could not cover anti-plant agents as they were not known in 1925, and that when they were discussed in the General Commission of the Geneva Disarmament Conference of 1933 it was only sought to prohibit the use of anti-plant chemical agents which also were harmful to man or animals.
196. We maintain that the indiscriminate use of anti-plant agents in armed conflict runs counter to the generally recognized rules of international law.
Following the adoption of the Final Declaration of the Second ENMOD Review Conference by consensus, Argentina and Sweden “expressed their satisfaction with the ban on the use of herbicides as a method of warfare.”