Hey Wade, you can set it up as a Loan or as a Credit Card or even just work everything through Accounts Payable - all three would work absolutely fine. When you set it up it will have a zero balance (no purchases made using it yet) and then as you enter purchases, you'll post your Expense (fertilizer or chemical, etc) and then offset that as follows:
Loan - EX line offset by L+ to record increase in loan owed. Typically this is done by entering a withdrawal for zero dollars.
Credit Card - Enter a withdrawal from the Credit card account (AgPartner) and record it as a expense.
Accounts Payable - Enter a Payable Charge against Vendor AgPartner and record it as an expense.
