A) Nitrogen and phosphorus
B) Nitrogen and potassium
C) Potassium and chlorine
D) Nitrogen, phosphorus and potassium
Correct Answer: D
Solution :
Macronutrients which become commonly deficient in the soils are called critical elements. They are three in number - N, P and K. These are given in form of fertilizers.You need to login to perform this action.
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