Micro irrigation have become extensively adopted in the San Joaquin Valley. It is highly efficient in terms of uniformity and metering. Many farmers utilize it for its water savings, but it has many benefits such as increased yields and labor savings. The most significant drawback is capital cost. Most crops can adapt to drip irrigation, but many, such as wheat alfalfa have not. There are many configurations of above and below ground systems. In the picture, for easy viewing, is drip above-ground.