Fertiliser Technology
Conversion of yellow phosphorus to red phosphorous is done in retorts at 250-450°C in the

Presence of an inert atmosphere
Presence of a reducing atmosphere
Absence of air
Presence of an oxidising atmosphere

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Fertiliser Technology
Plant tranquillisers

Hold back stem growth and halt plants at a desired height
Cause early maturation of plants
Produce seedless fruit
Accelerate ripening of food and grain

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