Compost and compost tea can help make soil better at fighting off diseases. However, they don't always work well in regular farming. This is because we don't fully understand how the microbes in compost and soil interact with plants and diseases. This article talks about how we can improve soil health using compost and compost tea. It looks at what makes soil better at fighting diseases, what affects how well compost works, and how we can use molecular tools to learn more about the microbes in compost and soil.