Plant nutrition studies essential elements for growth and reproduction. Liebig's law states plant growth is limited by nutrient deficiency. Plants obtain nutrients from air (C, H, O) and soil (N, P, K, Ca, S, Mg, C, H, O)
Endosperm is a triploid tissue produced in flowering plant seeds after double fertilization. Contains starch, oils, and protein for embryo nutrition. About 70% of angiosperm species have polyploid endosperm cells
Inorganic fertilizers are synthetic substances added to soil to provide nutrients. Fertilizers are classified into straight, complex, and compound types. Straight fertilizers supply only one primary chemical element. Complex fertilizers contain multiple nutrients produced through chemical reactions
Scotts Elite Broadcast Spreader leads with 20,000 square feet coverage. Agri-Fab 130-pound Tow-Behind Spreader ideal for large yards. Scotts Turf Builder EdgeGuard Mini handles 5,000 square feet. Scotts Classic Drop Spreader suitable for landscaped areas
NPK stands for nitrogen, phosphorus, and potassium, essential plant nutrients. Fertilizer labels show nutrient percentages in order (e.g., 5-10-5). Plants need about 16 nutrients, including nitrogen, phosphorus, and potassium
Seeds consist of embryo surrounded by protective testa. Seeds perform functions like multiplication, perennation, dormancy, and dispersal. Seeds are superior to spores due to stored nutrients and multicellular structure