CCA International Exam - Nutrient Management Questions With 100% Correct Answers

CCA International Exam - Nutrient Management Questions With 100% Correct Answers List the 17 elements essential for plant nutrition - answerC, H, O, N, P, K, Ca, Mg, S, Cl, Zn, Fe, Mn, Cu, B, Mo, Ni List the "beneficial elements" - answerSi, Na, Co, Se List the macronutrients - answernitrogen phosphorus potassium calcium magnesium sulfur carbon hydrogen oxygen List the micronutrients - answerboron copper iron chloride manganese molybdenum zinc nickel What is the function of nitrogen in plants? - answerfound in chlorophyll, nucleic acids and amino acids; component of protein and enzymes. What is the function of phosphorus in plants? - answeran essential component of DNA, RNA, and phospholipids, which play critical roles in cell membranes; also plays a major role in the energy system (ATP) of plants. What is the function of potassium in plants? - answerplays a major role in the metabolism of the plant, and is involved in photosynthesis, drought tolerance, improved winter hardiness and protein synthesis. What is the function of sulfur in plants? - answerrequired for protein synthesis; aids in seed production, producing the chlorophyll necessary for photosynthesis; necessary component of three amino acids needed for protein synthesis; required for nodule formation on root hairs of legume crops. Nitrogen: mobile or immobile in the plant? - answermobile as nitrate and ammonium (NO3 - / NH4 +) Phosphorus: mobile or immobile in the plant? - answersomewhat mobile as phosphate (H2PO4 - and HPO4 2-) Potassium: mobile or immobile in the plant? - answervery mobile (K+) Calcium: mobile or immobile in the plant? - answerimmobile (Ca 2+) Magnesium: mobile or immobile in the plant? - answersomewhat mobile (Mg 2+) Sulfur: mobile or immobile in the plant? - answermobile as (SO42-) Boron: mobile or immobile in the plant? - answerImmobile (BO3 -) Copper: mobile or immobile in the plant? - answerimmobile (Cu 2+) Iron: mobile or immobile in the plant? - answerimmobile (Fe 2+/Fe 3+) Manganese: mobile or immobile in the plant? - answerimmobile (Mn 2+) Zinc: mobile or immobile in the plant? - answerimmobile (Zn 2+) Molybdenum: mobile or immobile in the plant? - answerimmobile (MoO4 -) Chlorine: mobile or immobile in the plant? - answermobile (Cl -) Nickel: mobile or immobile in the plant? - answermobile (Ni 2+) How does nutrient uptake change as a plant progresses from germination to maturity? - answerplant nutrient needs start low while the plants are young and small, increases rapidly through vegetative growth, and then decreases again around the time of reproductive development