GK
WORLD GEOGRAPHY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The maximum soil fertility occurs in the pH range of
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5.0 to 6.2
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6.0 to 7.2
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7.0 to 8.2
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4.0 to 5.2
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Explanation:
Detailed explanation-1: -As the H+ activity increases, soil pH decreases. As the soil pH decreases, most desirable crop nutrients become less available while others, often undesirable, become more available and can reach toxic levels.
Detailed explanation-2: -Adding Manures and Fertilizers Fertilizers such as nitrogen, potassium and phosphorus are added to the soil to make it fertile. These are also added to the potted plants in gardens to enhance plant growth. NPK and urea are the most common fertilizers required by the soil. Urea adds nitrogen to the soil.
Detailed explanation-3: -The increased iron solubility was proportionately greater at high pH levels than at low levels.
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