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What are fertilizers? Classify fertilizers.
Fertilizers - Fertilizers are one of the major components for obtaining higher yields especially in expensive farming practices. Fertilizers are divided into following four groups:
(i) Nitrogenous fertilizers - These fertilizers supply the macronutrient nitrogen.
Example - Urea, CO(NH2)2
(ii) Potassic fertilizers - These fertilizers supply potassium which is one of the essential macronutrient of the plants.
Example - Potassium sulphate, K2SO4.
(iii) Complex fertilizers - These fertilizers contains two or more nutrients.
Example – Nitrophosphate
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