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How to operationalize the metric
Method of data collection and data needed to compute the method:
Household surveys can be used to ask farmers which plots and which crops are irrigated. This information can also be used to identify which households use any irrigation. Researchers will have to decide on the level of detail that needs to be assessed (e.g., the type of irrigation system, the frequency of watering, the quantity of water used). Seasonality is an important issue for distinguishing between dry-season irrigation and supplemental irrigation during rainy seasons.
Unit of analysis:
Limitations regarding estimating and interpreting:
Household surveys may be limited in collecting data on variations in irrigation water use within and across seasons. Modification to fit the project and context should be explored.