Fertiliser Technology
Fertiliser plants get their N₂ requirements

From producer gas
By dissociating oxides of nitrogen
From coal gas (coke oven gas)
By fractionation of liquified air

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Fertiliser Technology
Phosphatic fertilisers

Are useful during early stage of the plant growth
None of these
Accelerate fruit formation in later stages of growth
Lessen the effect of excessive nitrogen application

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