Nitrogen fertilisers are for fast growth and increase yield. Nitrogen in plant is its presence in the structure of protein.
Wheat needs potassium for its best growth, development and improves photosynthesis.
Farmers spray their crops to control weeds, harmful insects and diseases. Pests steal nutrients from the crop.
Stubble burning is a deliberate process of farmers burning straw stubble that is left from after wheat has been harvested.
What are Australia's food security issues and how can they be improved through more effective use of Australian resources?