The document discusses proper stockpiling and storing of materials in a nursery. It lists various stock materials like soil, peat moss, vermiculite and containers. There are potential pollutants in nursery soil like broken glass, weeds or diseased plants. Proper stockpiling ensures nursery hygiene and plant health. Materials should be arranged together and sterile items protected. The nursery should also have sections for media mixing, seed storage, treatment and germination. Proper stockpiling and storing of materials is important for disease-free seedlings.