Which of the following element is highly mobile?
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Solution
Mobile Elements N, P and K are highly mobile element, Zn is moderately mobile and S, Fe, Cu, Mn, Mo, Cl etc. are less mobile.
Immobile Elements Calcium and boron elements are immobile in nature.
The nitrification process is most active when the between
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Solution
Nitrification It is the biological oxidation of ammonia with oxygen, then into ammonium, then into nitrite followed by the oxidation of these nitrites into nitrates.
Degradation of ammonia to nitrite is usually the rate limiting step of nitrification. Nitrification is an important step in the nitrogen cycle in soil. This process was discovered by the Russian microbiologist, Sergei Winogradsky.
The phosphorus availability is highest when the reaction is between
The C : N ratio in saw dust is
The presence of VAM enhances up take of nutrients in general but particularly of
C : N ratio of FYM is
Non-essential but useful nutrients for plants would include
Plant nutrient critical for nitrogen fixation in legumes is
Which of the following nutrient element is responsible for resistance to plant disease?
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Solution
Functions of Potassium
1. Enzyme activation
2. Stomatal activity
3. Transport of sugars
4. Water and nutrient transport
5. Protein synthesis.
Which of the following nutrient element is responsible for the die back of citrus?