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By B. Chandrasekaran; K. Annadurai; E.Somasundaram

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Since, the agronomist co-operates and co-ordinate with all the disciplines of agriculture, it is essential that an agronomist should have training in other disciplines of agriculture also. ) The method may vary according to the germination period and depending upon the crop establishment and what should be the optimum plant population. , for long duration rice (150-100–50 kg), for pulses N2, P and K. If the method of cultivation varies the nutrient content also varies. The time and method of applying nutrients must also be taken into account.

Agriculture in India made tremendous progress in the rearing of sheep and goats, cows and buffaloes, trees and shrubs, spices and condiments, food and non-food crops, fruits and vegetables and developed nature friendly farming practices. These practices had social and religious undertones and became the way of life for the people. Domestic rites and festivals often synchronized with the four main agricultural operations of ploughing, sowing, reaping and harvesting. In the 30 A TEXTBOOK OF AGRONOMY Rig-Veda, there is reference to hundreds and thousands of cows; to horses yoked to chariots; to race courses where chariot races were held; to camels yoked to the chariots; to sheep and goats offered as sacrificial victims, and to the use of wool for clothing.

Attaining the targets proposed for this later period is a pre-requisite for improving the lives not only of those now living but also of further generations. 1 Development of scientific agriculture in world 1. 2. 3. 4. 5. 6. 7. 8. R. ) Theodore-de-Saussure : : : : : : : : Found the water as nutrient of plants Salt peter (KNO3) as nutrient and not water Fine soil particle as plant nutrient Discovered the oxygen Water, air, salts, fire and oil from the plant nutrients Isolated and characterized Indole -3- Acetic Acid (IAA) Developed the mould board plough.

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