The two farming practices that use water most efficiently are:
-
Using drip irrigation - This method delivers water directly to the roots of plants, minimizing evaporation and runoff, and thus uses water more efficiently.
-
Planting perennial crops - Perennial crops have deeper root systems and can access water more effectively than annual crops, leading to better water efficiency over time.
So, the correct answers are using drip irrigation and planting perennial crops.