Turmeric futures for June declined by Rs 82, or 1.23% to Rs 6,590 per quintal in 2,460 lots.
At the National Commodity and Derivatives Exchange (NCDEX), the May contract lost Rs 78, or 1.19% to Rs 6,494 per quintal in 12,565 lots.
However, estimates of lower output this season restricted the fall.
Prices declined as speculators trimmed their positions driven by subdued spot market demand against increased supplies.