Soil Characteristics
What is the term for the top layer of soil?
A) Bedrock
B) Humus
C) Topsoil
D) Subsoil
Which nutrient is essential for plant growth?
A) Hydrogen
B) Oxygen
C) Nitrogen
D) Carbon
Nitrogen
Why is soil sampling important?
A) To determine plant types
B) To assess soil health and nutrient levels
C) To test water quality
D) To measure air quality
To assess soil health and nutrient levels
What factors influence fertilizer application?
A) Soil type, plant type, weather conditions
B) Color of the fertilizer
C) Time of year only
D) Only plant type
Soil type, plant type, weather conditions
What is the impact of sunlight on plant growth?
A) It causes wilting
B) It is essential for photosynthesis
C) It has no effect
D) It damages the plant
It is essential for photosynthesis
hat is soil texture?
A) The color of the soil
B) The size of soil particles
C) The moisture content of the soil
D) The type of crops grown
The size of soil particles
What does N-P-K stand for in fertilizers?
A) Nitrogen, Potassium, Calcium
B) Nitrogen, Phosphorus, Potassium
C) Nitrogen, Phosphorus, Carbon
D) Nitrogen, Potassium, Magnesium
Nitrogen, Phosphorus, Potassium
Describe a proper soil sampling technique.
A) Sample from only one location
B) Combine samples from different depths
C) Use a clean tool to avoid contamination
D) Sample during dry weather only
Use a clean tool to avoid contamination
When is the best time to apply fertilizer?
A) During heavy rain
B) Before planting or during active growth
C) In winter only
D) At night
Before planting or during active growth
Name one environmental factor affecting plant growth.
A) Soil color
B) Air temperature
C) Plant size
D) Fertilizer type
Air temperature
What does soil pH measure?
A) The amount of organic matter
B) The acidity or alkalinity of the soil
C) The nutrient content
D) The water retention capability
The acidity or alkalinity
What nutrient is primarily responsible for root development?
A) Nitrogen
B) Phosphorus
C) Potassium
D) Calcium
Phosphorus
What tool is commonly used for soil sampling?
A) Shovel
B) Soil auger
C) Rake
D) Trowel
Soil auger
How does moisture affect fertilizer use?
A) It has no effect
B) It can enhance nutrient uptake
C) It prevents nutrient loss
D) It increases soil temperature
It can enhance nutrient update
How does humidity influence plant health?
A) High humidity always harms plants
B) It can affect transpiration rates
C) It has no effect
D) Low humidity increases growth
it can affect transpiration rates
Name one characteristic of loamy soil.
A) High clay content
B) Balanced mixture of sand, silt, and clay
C) Low organic matter
D) High drainage capability
Balanced mixture of sand, silt, and clay
What is the role of magnesium in plants?
A) Photosynthesis
B) Root growth
C) Water retention
D) Disease resistance
Photosynthesis
How deep should a soil sample be taken?
A) 1 inch
B) 6-12 inches
C) 24 inches
D) 36 inches
6-12 inches
What is the difference between organic and synthetic fertilizers?
A) Organic fertilizers are more expensive
B) Organic fertilizers come from natural sources, while synthetic are chemically manufactured
C) Synthetic fertilizers are always better
D) Organic fertilizers don't provide nutrients
Organic fertilizers come from natural sources, while synthetic are chemically manufactured
What role does wind play in plant growth?
A) It helps with pollination
B) It can cause physical damage
C) It has no effect
D) It increases soil moisture
It can cause physical damage
What is soil structure?
A) The color and texture of soil
B) The arrangement of soil particles and pores
C) The size of soil particles
D) The nutrient content of the soil
The arrangement of soil particles and pores
What are micronutrients?
A) Nutrients needed in large quantities
B) Nutrients needed in small quantities
C) Nutrients that only come from organic sources
D) Nutrients that help with soil texture
Nutrients needed in small quantities
What is the purpose of soil testing?
A) To identify soil texture
B) To determine nutrient needs and pH levels
C) To assess plant health
D) To measure soil temperature
To determine nutrient needs and pH levels
What is the recommended rate of application for nitrogen?
A) 10 lbs per acre
B) 20-50 lbs per acre depending on crop needs
C) 100 lbs per acre
D) 5 lbs per acre
20-50 lbs per acre depending on crop needs
How does soil temperature affect seed germination?
A) Higher temperatures always speed up germination
B) Optimal temperatures are needed for germination
C) Cold soil is best for all seeds
D) Temperature does not matter
Optimal temperatures are needed for germination