Post harvest engineering - introduction - objectives - post harvest losses of cereals, pulses and oilseeds - importance - optimum stage of harvest. Threshing - traditional methods mechanical threshers - types- principles and operation-moisture content - measurement - direct and indirect methods - moisture meters - equilibrium moisture content. Engineering properties of agricultural produces.

Psychrometry – importance – Psychrometric charts and its uses – Drying – principles and theory of drying – thin layer and deep bed drying – Hot air drying – methods of producing hot air – Types of grain dryers – selection – construction, operation and maintenance of dryers – Design of dryers

Principles - air screen cleaners – adjustments - cylinder separator-spiral separator – magnetic separator- colour sorter-inclined belt separator – length separators -effectiveness of separation and performance index.

Principles and operation – maize sheller, husker sheller for maize – groundnut decorticator –castor sheller – material handling –belt conveyor –screw conveyor – chain conveyor – bucket elevators –pneumatic conveying.

Paddy processing – parboiling of paddy – methods – merits and demerits – dehusking of paddy –methods – merits and demerits – rice polishers –types – constructional details – polishing –layout of modern rice mill - wheat milling – pulse milling methods – Millets and Winnower - oil seed processing.