That’s okay, you can choose multiple categories.
Our advice is try to think back to what the core of the question is. I.e.. If you are asking a question on the use of organic fertiliser for perennial pastures for beef production, should you put your question in Organic Fertilisers, Perennial Pastures or Beef Production.
In this case, we recommend categorising your question under Organic Fertilisers because this is core to your question.
We can use tags to help further categorise your question and these show up in search terms.