Deficiency of Nutrients


 
 
Concept Explanation
 

Deficiency of Nutrients

Deficiency of Nutrients:

When any macro- or micro-nutrient is absent or its concentration is less than the required amount, such a condition leads to a deficiency of that nutrient. The deficiency of nutrients leads to stunted growth, yellowing of leaves (due to less chlorophyll), reduced crop yield and even the death of plants. Manure and fertilizers are added to the soil to supply more nutrients.

Plants must obtain the following mineral nutrients from their growing medium:

The Macro-Nutrients:

Nitrogen (N), phosphorus (P), potassium (K), calcium (Ca), sulphur (S), magnesium (Mg), carbon (C), oxygen (O), hydrogen (H)

The Micro-Nutrients (or trace minerals):

Iron (Fe), boron (B), chlorine (Cl), manganese (Mn), zinc (Zn), copper (Cu), molybdenum (Mo), nickel (Ni)

Let us take an example of corn and see the deficiencies of nutrients and symptoms in the plants :

Nitrogen (N) deficiency causes pale, yellowish-green corn plants with spindly stalks. Because nitrogen is a mobile nutrient in the plant, symptoms begin on the older, lower leaves and progress up the plant if the deficiency persists.

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Sample Questions
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Question : 1

Which of the following crops would enrich the soil with nitrogen ?

Right Option : B
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Question : 2

What are the symptoms of deficiency of nutrients in plants ?

Right Option : D
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Explanation
Question : 3

Which of the nutrient are required by plants in small amount ?

Right Option : D
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Explanation
 
 
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