Compensation from your part-time job should support a Roth IRA contribution. If this is a job where you receive a W-2, the amount on a W-2 that will support an IRA contribution is the amount in box 1 minus any amount in box 11. If the part-time job is self-employment reported on Schedule C, TurboTax will combine this with your farming loss to determine your compensation from self-employment available to contribute to a Roth IRA.
Leaving the excess in an paying an excess contribution penalty each year until the excess is resolved is usually not a good option. If you obtain a return of contribution, you'll only pay tax and penalty on the earnings required to be distributed with the excess.
