Soil moisture refers to the amount of water present in the soil. It plays a crucial role in supporting plant growth, as plants absorb water through their roots. The right level of soil moisture helps plants thrive, while too much or too little can lead to problems like drought or flooding. Measuring soil moisture is important for farmers and gardeners to ensure their crops receive the right amount of water. Tools like moisture sensors can help monitor levels, allowing for better irrigation practices. Understanding soil moisture also contributes to environmental conservation and sustainable land management.