Aim: To increase growth in plant
Growth is achieved by the application of fertilisers to the soil and these normally take the form of nitrates of phosphates (sometimes both)
These compounds go into the soil and into the root structure, then moved in the transpiration stream to the leaf and used in the leaf.
In leaf:
- Nitrates will form proteins
- Phosphates are involved in DNA and membrane structure
The fertilisers can be divided into two groups:
1. The organic fertilisers
- Produced from animal waste from farm (cow faeces) – through a process of decomposition and fermentation and forms a substance known as slurry. Slurry is supplied to the field giving them a supply of Nitrate and Phosphate to promote growth.
2. Artificial fertilisers
- Form of synthetically produced chemicals (i.e Potassium nitrate and Ammonium nitrate), which can be bought by the farmer and placed in a solution and applied to the farm. These will release the nitrates, which will promote growth.
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