Water pollution in the Lake Taihu region in China is a big problem that affects the water quality and economy. To improve the situation, researchers have looked into estimating and controlling agricultural pollution. They reviewed different methods and strategies for measuring and reducing pollution from farming activities. By understanding how much pollution comes from different sources like crops and livestock, they can make better plans to clean up the water. The researchers suggest using various methods like field surveys to figure out how to reduce pollution from agriculture in the region.