Subject 3

Subject 1 Subject 2 Subject 3 Subject 4 Subject 5 Subject 6 Subject 7

Farm Pollution & Waste ] Nitrogen & Phosphate ] Pesticides ] Soil Erosion ]

Agriculture utilizes a range of external inputs (for instance, synthetic fertilizers and pesticides) to control, and in many cases, to increase yields.  These inputs have a range of environmental effects, often detrimental. 

CLICK HERE for agricultural and environmental interactions diagram


Farm pollution and waste: The potential for farms to pollute!

Learning Outcomes:

  1. Quantify the magnitude of the potential pollution problem caused by agriculture

  2. Explain three mechanisms for waste and pollution minimisation

Nitrogen & phosphates: Essential plant nutrients, but how much should we use?

Learning Outcomes:

  1. Draw a systems type diagram of the nitrogen cycle

  2. Explain mechanisms which may reduce the leaching or movement of N and P

Pesticides: Chemical control in agriculture

Learning Outcomes:

  1. Describe the action of at least two pesticides in the environment

  2. Formulate an opinion of the human health risks posed by the use of pesticides

Soil erosion: Preserving agricultures most valuable resource

Learning Outcomes:

  1. Describe soil erosion processes and the mechanisms through which farming practices can influence rates of erosion

  2. Suggest mechanism for reducing soil erosion on vulnerable sites


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