Fertiliser Technology
Heating of coke, sand & phosphate rock in an electric furnace is done for the manufacture of

Phosphorous
Triple superphosphate
Superphosphate
Phosphoric acid

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Fertiliser Technology
Potassic fertilisers

Stimulate early growth and accelerate seeding
None of these
Are useful during early stage of the plant growth
Help in development of starches of potatoes and grain

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