Nitrogenous Fertilisers (Man-made Fertilisers)
- Created by: Katy **
- Created on: 19-04-14 16:45
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- Nitrogenous Fertilisers
- Fertiliser
- substance used to put nutrients into soil for healthy plant growth
- nitrogenous
- contains nitrogen
- protein
- contains nitrogen
- Made from
- ammonia
- main use
- react with acid
- neutralisation
- Ammonia + Nitric acid ? Ammonium nitrate
- NH3 + HNO3 ? NH4NO3
- Ammonia + Sulfuric acid ? Ammonium sulfate
- NH3 + H2SO4 ? (NH4)2 SO4
- ammonia
- Disadvantages
- eutrophication
- water soluble
- washed by rain to water source
- contributes to nitrate pollution of water
- causes excess growth of algae
- algae die = bacteria decompose the decaying algae
- bacteria use dissolved oxygen = low oxygen levels = fish die
- intensive farming
- reduce in biodiversity
- loss of habitats
- eutrophication
- Advantages
- produce large yields
- arable lands
- keep down food price
- avoids food shortages
- Fertiliser
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