Soil and Plant Nutrition

Recall cards on soil and plant nutrition: the essential elements and the nine macronutrients and the micronutrients, their roles and deficiency symptoms, and hydroponics; the composition, particle sizes, and formation factors of soil, humus, and the soil profile horizons; and nutritional adaptations including biological nitrogen fixation, rhizobia and nodules, mycorrhizae, epiphytes, parasitic and saprophytic plants, and insectivorous plants.