Generally, the amount reported on Schedule K-1 (Form 1065) Partner’s Share of Income, Deductions, Credits, etc., Box 14, Code C Gross non-farm income is not used on the individual income tax return. This amount would only be used if you are using the non-farm option method for calculating your self-employment tax on Schedule SE (Form 1040) Self-Employment Tax.
Per IRS Partner's Instructions for Schedule K-1 (Form 1065) Partner's Share of Income, Deductions, Credits, etc. (For Partner's Use Only), on page 13:
Code C. Gross nonfarm income. If you are an individual partner, use this amount to figure net earnings from self-employment under the nonfarm optional method on Schedule SE (Form 1040), Part II.
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