Scientists at zonal agricultural and horticultural research station of the University 
at Hiriyur have developed a disease resistant and high yield variety of castor seed called HCH-6 (Hybrid Castor Hiriyur) which is a fusion of DPC-9 and TMV-6 varieties.
The yield of the variety is said to be around 18 quintals per hectare while it is around 13-14 quintals per hectare in other existing varieties.