Sage and Quickens are two of the better known programmes. Quickens can usually be obtained at a fairly low prices for a older but still fully practical programmes. click here may have some available. As you are in the farming industry, why not contact your local NFU branch, perhaps they have some good suggestions of possible good software at discounted prices.Even speak to your animal feed supplier, who may offer direction and help on this matter.
Not to sure now, but I think Sage and Quickens both have websites that offer trial downloads.