Nutrient Management Flashcards
List all essential macronutrients for plant nutrition
Nitrogen, phosphorus, potassium, calcium, magnesium, sulfur
List all essential micronutrients for plant nutrition
Boron Chlorine Copper Iron Manganese Molybdenum Nickel Zinc
Which nutrients are mobile in a plant?
Nitrogen
Phosphorus
Potassium
Magnesium
Which nutrients are immobile in a plant?
Sulfur
Calcium
What are the soil uptake forms of nitrogen?
NH4 + and NO3 - (ammonium and nitrate)
What are the soil uptake forms of phosphorus?
Phosphate (H2PO4 - and HPO4 -2)
What are the soil uptake forms of potassium?
K+ ion
What are the soil uptake forms of calcium?
Ca 2+ ion
What are the soil uptake forms of magnesium?
Mg 2+
What are the soil uptake forms of sulphur?
SO4 2-
What plant functions require N?
Synthesis of amino acids, proteins, enzymes
Part of chlorophyll - necessary for photosynthesis
ADP and ATP
What is P important for in plant functions?
ADP, ATP (energy transfer),
Photosynthesis and respiration
Constituent of Nuclear material for cell division
What is K important for in plant functions?
Growth of meristematic tissue
Regulations of stomatal opening (water loss)
N and Carbohydrate metabolism
Enzyme catalysis
What is S important for in plant functions?
Component of amino acids ie. proteins
Protein synthesis and enzyme activation
Flavor compounds in mustard, garlic, onions
How do nutrient requirement rates change during the different plant growth stages?
Nutrient demand is small when plants are seedlings, but the rate of demand increases is large while plants are in their vegetative growth stage, and decreases when plants are in their reproductive growth stages.
