Agriculture is the backbone of Indian economy, as we are growing hundreds of cereals, pulses, oil seeds, fruits and vegetables. In addition, rearing of milch animals, fishes, honeybees and silk worms has become an integral part of our economy. By virtue of hard work of the Agricultural Scientists and farmers, we have attained green revolution, white revolution, brown revolution and golden revolution. Now, we are talking of rainbow revolution and it is hoped that we are approaching towards it with great sincerity and the day is not far when we will achieve it. Now, mushroom growing, honeybee rearing (Apiculture), sericulture, aquaculture, dairying, piggery, ornamental fish culture, processing of fruits and vegetables are few important areas where our policy makers and planners are giving utmost attention. Therefore, our students should have some preliminary knowledge on these aspects.