The study compared different methods for estimating crop water needs in West Texas. The researchers found that a simple temperature-based equation underestimated water needs compared to a more complex method. By adjusting the equation's coefficients, they were able to improve the accuracy of water need estimates. The new coefficients provided better agreement with the more detailed method, especially when tailored to specific months and regions. Overall, the study suggests that using these adjusted coefficients can lead to more accurate estimates of crop water needs in West Texas.