The farm practices that have been used by farmers only in recent years is : ( D ) None of the above
Farm practices
The farm practices listed in the question have all been used in since the agricultural revolution and not just in recent years. Fertlizing crops have been practised by farmers to yield more produce also the use of pest control and irrigation have all been used in previous years and recent years.
Hence we can conclude that the farm practices that have been used by farmers only in recent years is None of the above .
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