Nutrients For Growth Starter Activity: Collect three study cards.

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Presentation transcript:

Nutrients For Growth Starter Activity: Collect three study cards. Show me boards or post it notes to collate pupil responses Collect three study cards. Use your notes to come up with three questions related to the nitrogen cycle. Write a question AND an answer on each card. 1

Fertilisers Learning Intention: To understand how we can change the environment to help plants grow. Success Criteria: Explain the importance of fertilisers to the growth of crops Give examples of natural fertilisers Give examples of artificial fertilisers Describe the good points and bad points about the different types of fertilisers

Twig Video Clip: What Plants Need to Grow What is a fertiliser? Watch this short video clip: Twig Video Clip: What Plants Need to Grow Think: Can you describe what a fertiliser is? Pair: Agree on a description with your partner Share: Write your ideas on a Show Me Board

What is a fertiliser? A fertiliser is a substance that helps plants grow. It provides the nutrients needed for healthy growth. It replaces nutrients that are lost from the environment when plants are removed during harvest.

Think  Pair  Share What are nutrients and why are they important? What does harvest mean? What happens to the recycling of nutrients when crops are harvested?

Why are fertilisers important? When crops are harvested the nitrogen taken out of the cycle needs to be replaced. Nitrogen can be added to the soil in the form of nitrate fertilisers.

Nitrogen A lack of nitrogen means the plants have small yellow leaves

Phosphorus A lack of phosphorus causes small roots, which makes the plant smaller

Potassium A lack of potassium causes poor flowers (or fruit) to develop

Applying Fertilisers Fertilisers can be: powder liquid granules

Experiment You are going to use this equipment to plan an experiment to see how different levels of minerals effect overall plant growth.

Your task… Natural Fertilisers V’s Artificial Fertilisers Types of Fertilisers There are two main types of fertilisers: 1. Artificial – Man made chemicals 2. Natural - Found in the environment and made by living things Your task… Natural Fertilisers V’s Artificial Fertilisers Use the fertilisers information sheet to produce a fact sheet to compare the two different types of fertilisers.

Artificial Fertilisers

Natural Fertilisers Manure Bone Meal Compost

Fertilisers Factsheet Skill Area Evidence Planning A clear statement of what your factsheet is about A sentence about the importance fertilisers Researching Select the appropriate information from the worksheet Try to find out some more information by yourself Presenting information Your factsheet must include at least one of the following: A graph, a table of information, a diagram or a flow chart Explaining impact A description of what fertilisers are and why they are useful Description of how fertilisers can be harmful to the environment Communication Produce an A4 factsheet that you can talk about

Fertilisers Learning Intention: To understand the effects fertilisers can have on the environment Success Criteria: Explain how fertilisers can pass into the environment Explain the effects of fertilisers in aquatic environments Give examples areas affected by fertiliser pollution

Effects of Fertilisers Fertilisers can have negative effects on our environment.

Leaching Fertilisers can leach from the soil into nearby water. This can happen when heavy rain washes excess fertiliser off the soil. This means that the water is now rich in nitrates which algae love to feed on.

Algal Bloom Nitrogen in fresh water increases algal growth, blocking out the light. This causes death of organisms, decrease of oxygen and means less life can be supported.

Algal Bloom in China

Effects of fertilisers Water Pollution

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