Types of Growing Media
What is an organic byproduct used to increase aeration and water holding ability?
Bark
What is the correct term for "the ability of the medium to allow excess water to flow out"?
Drainage
What is a fertilizer?
Adds a nutritional boost to a plant
What is the topmost soil horizon called?
O horizon (organic material)
Name 2 purposes of growing media.
Provide nutrients/water to a plant.
Anchor the plant.
Which growing medium is made from coconut husks?
Coir
Why is aeration important for plant roots?
Roots need oxygen for respiration and healthy growth.
Prevent diseases
What are the 3 macronutrients a plant needs?
Nitrogen, Phosphorus, and Potassium
Which soil horizon contains most of the roots and is rich in minerals and organic material?
A (topsoil)
What is compost, and how is it used in gardening?
Decomposed organic matter; improves soil fertility and structure.
What is the main component of most potting soils?
It provides water retaining and is slightly acidic.
Peat Moss
What property helps a medium hold nutrients?
Cation exchange capacity (CEC).
What nutrient is needed is a plant has yellowing leaves and stems?
Nitrogen
What is known as the leaching horizon?
E
Why might a gardener add lime to their soil?
To raise the soil pH and reduce acidity
Which ingredient provides a high bulk density and improves drainage?
Sand
What are the three main soil texture types?
Sand, silt, and clay.
Calculate the amount of inert materials of a 10 lb bag.
This is the amount of materials: 20-10-30
4
Which horizon is also called the “parent material”?
C Horizon
What is soil erosion, and why is it a problem for agriculture?
Soil erosion is the removal of topsoil by wind or water; it reduces soil fertility and can decrease crop yields.
What are two benefits of rock wool?
Aquaponics/Hydroponics
Good Water Holding Capacity
Good Aeration
What is the ideal pH range for most growing media?
5.5-6.5
Name three micronutrients essential for plant growth.
Name all the 6 main soil horizons in order from top to bottom.
O, A, E, B, C, R
What is the role of earthworms in soil health?
hey aerate the soil and help decompose organic matter, improving soil structure and fertility.