Organic agriculture is a productive system which strictly prohibits the use of synthetic fertilizers, pesticides, growth regulators, preservatives and livestock feed additives etc. Agriculture practices rely to the maximum extent on crop residues, animal manures, crop rotations, cropping pattern, green and green leaf manures, mulching, off farm organic wastes and bio-fertilizers to supply plant nutrients and adopt biological control methods to control pest. Organic farming is not merely a production process, doing away with chemical pesticides and fertilizers, but it is also about substituting them with organic alternatives.