Cassava is a major tuber crop cultivated in Kerala, as a sole crop or as a mixed crop, mainly cultivating in homesteads and primarily used for household consumption. The share of cassava area in Kerala to all India area declined from 85.57 to 45.5 percent in 2001-02.  With the introduction of short duration varieties, there was an increase in productivity. Trend and Instability analysis in the area, production and productivity of cassava for a period of 25 years were carried out. The estimated trends in the area, production, and productivity of cassava, using semi-log function revealed that there was a significant decline in an area with a compound annual growth rate of 1.37 %, the non-significant decline in production by -0.02 % and a significant increase in productivity by 1.3 %. Cuddy-Della Valle index provides the best estimates and instability was found to be more in productivity (4.04 %).