The correct sequence in decreasing order of the four sugarcane producing States in India is

1. The question requires arranging four major sugarcane producing States in India in decreasing order of their production volume around the year 2000. 2. Uttar Pradesh (U.P.) was the leading state in sugarcane production. 3. Maharashtra consistently held the second position. 4. Among the southern states listed, Tamil Nadu (TN) generally ranked higher than Andhra Pradesh (AP) in sugarcane output during that period. 5. Thus, the correct sequence in decreasing order was: U.P., Maharashtra, Tamil Nadu, Andhra Pradesh.