What is the definition of soil sterilization in nursery practices?

Soil sterilization in nursery practices is defined as the process used to eliminate pathogens and pests from the soil. This is a critical procedure for maintaining healthy plant growth because contaminated soil can harbor various harmful organisms such as fungi, bacteria, nematodes, and weed seeds that can negatively affect plant health and productivity. By sterilizing the soil, nurseries aim to create a safer growing environment, allowing for the establishment of healthy plants that are less susceptible to disease and pest infestations.

This method is particularly important in a nursery setting, as young plants can be more vulnerable to damage from soilborne pests and diseases. Techniques for soil sterilization may include heat treatment, chemical methods, or steam sterilization, all aimed at ensuring that the soil is free of harmful contaminants before planting.

Other options, while related to soil management, do not encapsulate the primary goal of soil sterilization. Enhancing nutrient availability, adding organic matter, or improving soil structure and drainage are important practices in soil management but do not focus specifically on the elimination of pathogens and pests, which is the core purpose of soil sterilization.