Section 31(3) in The Bihar Civil Service (Executive Branch) and the Bihar Junior Civil Service (Recruitment) Rules, 1951
(3)Tillage and Farm Implements. - Definition, importance, objects and kinds of tillage, essential differences in tillage in different types of soils, preparation of seed bed; control of weeds.A study of the indigenous improved and introduced implements in Bihar in respect of assemblage, adjustment, working cost, care and economics of operation.
