1) The document discusses irrigation and water requirements of sugar beet crops. It provides information on crop coefficients, optimal soil moisture content, leaf water potential, critical irrigation times, the relationship between evapotranspiration and yield, and the crop's sensitivity to waterlogging and salinity. 2) Sugar beets have a maximum rooting depth of around 3 feet and require irrigation to maintain 50% depletion of soil moisture in the root zone. Their most sensitive growth stages are emergence and germination. 3) Maintaining optimal soil moisture and leaf water potential is important for maximizing sugar beet yields, as water stress can negatively impact photosynthesis and plant growth. Both excessive water and drought conditions should be avoided.