It depends on the type of LLC you have. If you have a single member LLC your filing date is 04/18/2017. If you have a multi-member LLC, the LLC must file a return by 03/15/2017
A single member LLC is a disregarded organization by the IRS. This means that all income and expenses get reported on Schedule C of your individual tax return. When using Turbo Tax, use either Turbo Tax Self Employed (online) or Turbo Tax Home and Business (desktop software).
You will enter your business information under the Business tab of the program. There is a section to enter the general information about the business and then there sections for both income and expense. The program will generate a Schedule C which is included in your individual tax return.
https://ttlc.intuit.com/questions/3529432-what-forms-do-i-need-to-file-for-a-pass-through-sole-propr...A multi-member LLC must file it’s own tax return. The IRS treats an LLC as a partnership. This means that the LLC’s income and expenses are distributed to the members using a Form K-1. You would include the K-1 in your personal return. It would not change the due date for your personal return. It would still be 04/18/2017.
See
https://turbotax.intuit.com/tax-tools/tax-tips/Small-Business-Taxes/Limited-Liability-Company-Taxes/... for more information.
If your farm income is reported on Schedule F, that would be included in your personal tax return and your filing deadline for that is 04/18/2017.