Unraveling the Secrets of Soil: Understanding pH and Nutrient Availability in Horticulture

• New lesson editor
• Biology
• Lower Secondary (Key Stage 3)

Learning Objective

At the end of the lesson, you will be able to understand the significance of soil pH and nutrient availability in horticulture.

What do you already know about soil pH and nutrient availability in horticulture?

Introduction to Soil pH

Soil pH measures the acidity or alkalinity of the soil. It is important for nutrient availability and plant growth.

N-P-K and Soil Nutrient Availability

N-P-K refers to the primary nutrients nitrogen, phosphorus, and potassium, essential for plant growth and development.

UK Soils and Nutrient Availability

UK soils vary in pH and nutrient content, influencing plant health and growth.

Soil Texture and Nutrient Availability

Sand, silt, and clay have different textures that impact nutrient availability and water retention in the soil.

Which of these is a nutrient that plants need?

A

water

B

soil

C

nitrogen

Do roots help to keep the plant stable in the ground?

A

False

B

True

If something is acidic it has a pH of...

A

7

B

8-14

C

0-6

Which area of the UK has more acidic soil?

A

South east

B

Scotland

C

Ireland

Interactive Quiz: Nutrient Needs of Plants

Which of these is a nutrient that plants need? Water, Nitrogen, Soil

Interactive Quiz: Soil pH

If something is acidic it has a pH of 0-6

UK Soil pH Variation

Which area of the UK has more acidic soil? South east, Ireland, Scotland

Nutrient Deficiency and Plant Health

Explore the effects of nitrogen, phosphorous, and potassium deficiencies on plant health.

What is the name of the first root that appears out of the seed?

A

Root cap

B

radicle

C

embryo

Which factor affects the availability of nutrients in soil?

A

wind erosion

B

pH levels

C

soil color

D

atmospheric pressure

What is a component of soil texture?

A

rainwater

B

sunlight

C

plant roots

D

sand

What does pH measure in soil?

A

soil compaction

B

acidity or alkalinity

C

nutrient concentration

D

temperature fluctuations

Which microorganism contributes to soil fertility?

A

beetles

B

ants

C

earthworms

D

mycorrhizal fungi

What is an example of organic matter in soil?

A

plastic

B

glass

C

metal

D

compost

What does dark soil often contain to keep the soil healthy for plants?

A

Organic matter/ humus

B

Water

C

Air

D

rock

Write down 3 things you learned in this lesson.

Write down 2 things you want to know more about.

Ask 1 question about something you haven't quite understood yet.