HORTICULTURE SCIENCE
METHODS OF IRRIGATION AND FERTILIZER APPLICATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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An element is essential if:
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A plant can’t develop without it
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It plays a critical role in plant metabolism
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It cannot be replaced by another element
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Deficiency symptoms corrected only by supplying the deficient element
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All of the above
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Explanation:
Detailed explanation-1: -25 chemical elements are essential to life. Four elements-carbon (C), oxygen (O), hydrogen (H), and nitrogen (N)-make up 96% of living matter.
Detailed explanation-2: -Three Criteria for Essentiality of Nutrients: A plant cannot complete its life-cycle in the absence of the element. The action of the element must be specific, with no other element being able to completely substitute for it. The element must be shown to be directly involved in the nutrition of the plant.
There is 1 question to complete.