production technologies will all change and adjust over time. Future research should address
these concerns.
Further research is needed to confirm the magnitude of the effects from each policy in the
respective countries. The usage and distribution of water and other inputs can change when cost
or revenue shocks are large. The assumed limited technology option and fixed yield might not be
able to reflect the actual response in a precise manner. The links between irrigation policy
practice and impacts on water saving technology adoption, substitution effects among inputs, and
the rest of economy should also be considered.
Reference
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