Water shortage is a big problem for farming in dry areas. Scientists studied how climate and human activities affect how much water is needed for irrigation. They found that temperature has gone up, wind speed has gone down, and farmland has increased. The biggest factor affecting water demand is how much land is used for farming. By changing what crops are grown, we can increase the size of irrigated farms by almost 26%. This means we need to adjust what crops are grown and how much land is used to make farming more sustainable in the future.