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NUTRIENT UPTAKE IN PLANTS What does nutrient uptake have to do with daily activities on the farm? INTRODUCTION There are 13 nutrients that are vital for plants to grow and thrive (Table 1). These can be divided into macro-nutrients, elements of which plants require large quantities, and micro-nutrients (elements that are required by the plant in smaller amounts). A micronutrient, though required in small doses, is not less vital for plant growth. Plant nutrients Primary nutrients : Nitrogen (N), Phosphorus (P), Potassium (K) Secondary nutrients: Calcium (Ca), Magnesium (Mg), Sulfur (S) Micro-nutrients: Iron (Fe), Boron (B), Copper (Cu), Chlorine (Cl), Manganese (Mn), Molybdenum (Mo), Zinc (Zn) The availability and mobility of these 13 plant nutrients in the soil and in the plant itself is highly variable, and this has implications for responsibly managing plant nutrition, fertilization and irrigation. MOBILITY OF NUTRIENTS IN SOIL The mobility of plant nut...