During shemita, every 7th year of the agricultural cycle, the land of Israel is to be left completely fallow. One is forbidden from working the land which includes: plowing, planting, pruning and harvesting. There is another mitzvah known as Bikkurim.
Bikkurim, in the land of Israel, were the first fruits of season from the seven species. The owner of the land would first look out for them when they would begin to blossom, would mark them off and upon ripening, would bring up to the Jerusalem and would then give them as a gift to the temple for the Kohanim to consume.
Bikkurim required the owner to harvest the first fruits that grew and bring them up to the temple. Was the Bikkurim fruits ceremony performed during a shemitah year?