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Fertilisers

Fertilisers. Give one, get one – what do you know about fertilisers?. Watch the following clip about. Fertilisers – name the 3 minerals found in fertilisers? - What two methods are used on this organic farm instead?. Fertilisers.

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Fertilisers

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  1. Fertilisers Give one, get one – what do you know about fertilisers?

  2. Watch the following clip about... Fertilisers – name the 3 minerals found in fertilisers? - What two methods are used on this organic farm instead?

  3. Fertilisers Fertilisers contain nitrogen (N), phosphorus (P) and potassium (K). The absence of any of these minerals will reduce growth in the plant.

  4. Each packet has a ratio which needs to be simplified to a whole number ratio... Miragrow Excellent for leafy green grass and veg. NPK ratio 14:6:2

  5. Supergrow The number one fertiliser for fruit trees and flowers. Each packet has a ratio which needs to be simplified to a whole number ratio... NPK ratio 27-3-9

  6. Greengrow Growing potatoes? This is the fertiliser for you!! Each packet has a ratio which needs to be simplified to a whole number ratio... NPK ratio 4-36-12

  7. Fertilisers • Natural fertilisers include spreading manure and growing clover in the fields. • Artificial fertilisers are chemicals.

  8. Fertilisers

  9. What do you think causes this?

  10. Watch the following clip about... How do fertilisers cause algal blooms?

  11. Put these in order... 1. Chemicals leach into water 2. Fish die 3. Overuse of fertilisers 4. Oxygen levels decrease 5. Algal bloom develops

  12. Today we will be learning about… • The steps of the Nitrogen Cycle. • How feedback can help to improve our learning.

  13. Mind map Create a mind map showing what you already know about feedback.

  14. The Nitrogen Cycle Watch the following clip about the nitrogen cycle and create a sequence of the main steps.

  15. Time for feedback! • Your partner will give you feedback on how to improve your sequence. • Act on the feedback you have received.

  16. Nitrogen gas in the air Nitrogen fixation (by bacteria) Dentrification by bacteria Nitrogen fixation (by bacteria) Excretion and death Nitrogen in animals (protein) Nitrogen in waste and dead bodies (e.g. urine) Nitrogen in plants (protein) Animal Nutrition Absorption by roots Decomposition by bacteria Death Nitrogen in nitrates in the soil Nitrogen in ammonium compounds in soil Nitrogen in nitrites in the soil START HERE Nitrification by bacteria Nitrification by bacteria

  17. Now try the card sort...

  18. Time for feedback! • Your partner will give you oralfeedback on how to improve your sequence. • Be kind, helpful and specific. • Act on the feedback you have received.

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