If you’re purchasing compost or manure
August 29th, 2010
If you’re purchasing your compost or manures (or even top soil) do be aware that herbicide residues do exist and can create conditions that restrict the growth of plants.
For example, aminopyralid is registered for a wide variety of crops and has created enough problems in the UK to have its registration pulled (technically Dow asked to have it pulled) Having said that, the residue does persist in manure and composts so if you purchase products with residues, you might see stunting and leaf curl on susceptible plants such as tomatoes.
This would be early in the season and not later. S