More than 70 percent of the precipitation that falls while a field is in fallow is lost to evaporation, infiltration past the root zone, and runoff.
No-till cropping systems not only maximize water infiltration, but also water conservation. By keeping the soil surface covered and cool the amount of water lost to direct evaporation from the soil surface is significantly minimized. A cooler soil surface provides a cooler environment for plants, allowing greater use of water for growth and less for cooling themselves through transpiration. The combination of increased water intake into the soil and less evapo-transpiration out of the soil has drastically increased the moisture use efficiency of crops grown in no-till systems.