What is a major purpose of smart irrigation systems?

The major purpose of smart irrigation systems is to deliver precise amounts of water based on current environmental conditions and the specific needs of crops. These systems utilize advanced technology such as soil moisture sensors, weather data, and evapotranspiration rates to determine when and how much water is necessary. This precision helps to maximize water efficiency, reduces waste, conserves resources, and promotes healthier crop growth by ensuring that plants receive the right amount of water at the right time.

In contrast to this correct answer, flooding fields indiscriminately does not take into account the varying water needs of different crops and can lead to waterlogging or other issues that negatively affect plant health. Eliminating the need for any watering altogether would not be practical, as most crops still require irrigation, especially in drier climates. Finally, smart irrigation systems aim to reduce labor requirements by automating the irrigation process rather than increasing the need for manual labor.