explain : (1) fertilizer (2) irrigation
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1) fertilizer
A fertilizer (American English) or fertiliser (British English; see spelling differences) is any material of natural or synthetic origin (other than liming materials) that is applied to soil or to plant tissues to supply one or more plant nutrients essential to the growth of plants.
Explanation:
(2) irrigation
Irrigation is the process of applying controlled amounts of water to plants at needed intervals. Irrigation helps to grow agricultural crops, maintain landscapes, and revegetate disturbed soils in dry areas and during periods of less than average rainfall.
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A natural or chemical substance use to increase fertility of soil.
The supply of water to land or crop to help growth, typically by means of channel.
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