Segment 134 A Restatement of the Law of the First fruits (Daniel I. Block, OT312 Book Study: Deuteronomy) 14:22 reads “You shall truly tithe all the increase of your grain that the field produces year by year." The New King James Version (Nashville: Thomas Nelson, 1982), Dt 14:22. which is a statement in relation to tithing but probably implies "first fruits".
I think that you may be referring back to Deut 14:21 “You shall not boil a young goat in its mother’s milk. The New King James Version (Nashville: Thomas Nelson, 1982), Dt 14:21. However, this is at the end of the list of clean and unclean meat and there does not appear to be a "first fruits" context. Would you kindly clarify this for me please?