Final answer:
Soil in agriculture and horticulture is the medium for plant growth and plays a vital role in providing support, nutrients, water, heat, and oxygen. Soil quality influences plant distribution and growth. Alternative practices like minimal tillage and no tillage can help protect soil organisms and prevent erosion.
Step-by-step explanation:
In agriculture and horticulture, soil generally refers to the medium for plant growth. It plays a key role in plant growth by providing physical support, nutrients, water, heat, and oxygen. Soil quality is a major determinant of plant distribution and growth, and it depends on factors such as chemical composition, topography, and the presence of living organisms. Alternative practices, such as minimal tillage or no tillage, can help protect soil organisms, reduce costs, promote water infiltration, and prevent topsoil erosion.