This invention relates to a skim coulter for cutting off and laying down a strand of the furrow slice which is formed in the ploughing of soil by a plough provided with a conventional ploughshare (14) see Figure 2 (not shown), which skim coulter is provided with a blade (6) which is attached above the ploughshare and can swing back in relation to the ploughshare when overloaded. An adjustable biasing force (8) resists the break-back movement and the position of the coulter blade relative to the ploughshare is adjustable. The skim coulter according to the invention can prevent adherence of soil on its blade and effect more constant contact of the blade with the soil. IMAGE
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