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RHS Level 2 Certificate Barriers to Learning and Soil Organic Matter
Learning objectives ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Soil Profile and Texture Homework outcomes ,[object Object],[object Object],[object Object],[object Object]
Study Planning and Time Management ,[object Object],[object Object],[object Object],[object Object]
Barriers to Learning ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Soil Organic Matter ,[object Object],[object Object],[object Object]
Main Sources of Organic Matter in the Soil ,[object Object],[object Object],[object Object]
Advantages and disadvantages of crop debris etc Recycles waste Soil may then contain very coarse organic matter Low effort – digging in only Turning in weed seeds that will germinate if exposed to light No risk of importing diseases Unlikely to be sufficient on its own Present on site already Disadvantages Advantages
Advantages and disadvantages of compost Uncertain nutrient composition. Recycles waste that would otherwise be dumped May contain pests and diseases if not ‘hot’ composted Good source of nutrients Local authority compost may contain plastics, perennial weeds etc Low cost – either free or purchased from LA Disadvantages Advantages
Advantages and disadvantages of Farm Yard Manure Can acidify soil; anaerobic decomposition causes foul smell Easily available and inexpensive in bulk Can contain herbicide residues Good for improving drainage Uncertain nutrient composition  Good source of nutrients Needs to be stacked and stored Long lasting in the soil Disadvantages Advantages
Advantages and disadvantages of spent mushroom compost Can be expensive due to transport costs unless collected. Good organic content and already partially rotted – no need to stack. Alkaline so not good for acid loving plants, fruit etc Alkaline so good for vegetable plots Not readily available in many areas Recycles waste Disadvantages Advantages
Advantages and limitations of adding organic matter to the soil Likely to need to import material Improves CEC Can acidify the soil as it decomposes Darkens soil so it warms more quickly Breaks down more quickly in well aerated, well drained soils Encourages formation of ‘crumb’ structure Needs to be regularly applied in bulk – especially intensively cultivated soils Improves drainage and water holding capacity Limitations Advantages
Learning outcomes ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

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Rhs year 2 week 4 presentation

  • 1. RHS Level 2 Certificate Barriers to Learning and Soil Organic Matter
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  • 8. Advantages and disadvantages of crop debris etc Recycles waste Soil may then contain very coarse organic matter Low effort – digging in only Turning in weed seeds that will germinate if exposed to light No risk of importing diseases Unlikely to be sufficient on its own Present on site already Disadvantages Advantages
  • 9. Advantages and disadvantages of compost Uncertain nutrient composition. Recycles waste that would otherwise be dumped May contain pests and diseases if not ‘hot’ composted Good source of nutrients Local authority compost may contain plastics, perennial weeds etc Low cost – either free or purchased from LA Disadvantages Advantages
  • 10. Advantages and disadvantages of Farm Yard Manure Can acidify soil; anaerobic decomposition causes foul smell Easily available and inexpensive in bulk Can contain herbicide residues Good for improving drainage Uncertain nutrient composition Good source of nutrients Needs to be stacked and stored Long lasting in the soil Disadvantages Advantages
  • 11. Advantages and disadvantages of spent mushroom compost Can be expensive due to transport costs unless collected. Good organic content and already partially rotted – no need to stack. Alkaline so not good for acid loving plants, fruit etc Alkaline so good for vegetable plots Not readily available in many areas Recycles waste Disadvantages Advantages
  • 12. Advantages and limitations of adding organic matter to the soil Likely to need to import material Improves CEC Can acidify the soil as it decomposes Darkens soil so it warms more quickly Breaks down more quickly in well aerated, well drained soils Encourages formation of ‘crumb’ structure Needs to be regularly applied in bulk – especially intensively cultivated soils Improves drainage and water holding capacity Limitations Advantages
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