What effect does increasing organic matter have on drainage in soil?

Increasing organic matter in soil significantly improves drainage. Organic matter, such as decomposed plant material and microorganisms, enhances the soil structure by creating aggregates. These aggregates increase the pore spaces in the soil, which allows water to move more freely through the soil profile.

Furthermore, organic matter improves soil's overall health and its ability to retain nutrients and moisture while also facilitating better air circulation in the root zone. This balance helps prevent water from pooling in the soil, which promotes effective drainage.

In contrast, options suggesting that organic matter decreases drainage or creates waterlogging fail to recognize the structural benefits of organic matter. Increasing organic matter is beneficial for maintaining soil aeration and encouraging efficient water movement, which contradicts the notion that it could create excessive moisture problems. Similarly, the idea that organic matter has no effect on drainage overlooks its crucial role in improving soil properties overall.