Ornamental Hort Test 1
What are the essential non-mineral nutrients?
Carbon, Hydrogen, Oxygen
What are the primary macro-nutrients?
Nitrogen, Phosphorus, Potassium
What are the secondary macro-nutrients?
Calcium, Magnesium, Sulfur
What are the micro-nutrients?
Iron (Fe), Copper (Cu), Manganese (Mn), Zinc (Zn), Molybdenum (Mo), Boron (B), Sodium (Na), Chlorine (Cl)
Which two of the micro-nutrients tend to be deficient in our soils?
Iron and Manganese
What is mechanical seed dormancy?
The seed coat is impermeable, too hard to allow germination.
How is mechanical dormancy overcome?
Scarification - breaking open seed coat.
What is chemical dormancy?
The seed has not experienced the necessary chemical changes inside in order to start germinating.
How is chemical dormancy overcome?
Stratification - putting seed in the right environment. for example, putting seed in fridge.