Yes, agricultural plastic mulch can be effectively used to reduce water usage in agriculture. By covering the soil with a plastic film, evaporation from the soil surface is significantly reduced, which conserves moisture. This method also helps to maintain a more consistent soil temperature, which can improve the efficiency of water use by plants. Additionally, plastic mulch can suppress weed growth, reducing the need for water-intensive weed management practices. Overall, the use of plastic mulch can lead to water savings and more efficient irrigation systems in agricultural settings.