Which of these practices does the most to decrease the amount of water needed to farm?
A. Cash crops
B. Crop rotation
C. Drip irrigation
D. No-till farming
C. Drip irrigation
Drip irrigation is a water-efficient method of irrigating crops by delivering water directly to the roots of plants, minimizing water waste through evaporation or runoff. This practice can significantly decrease the amount of water needed to farm compared to traditional irrigation methods like flood or sprinkler irrigation.