Fertiliser Technology
Though liquid ammonia itself is a fertiliser (with 82% nitrogen content) yet it is commonly not used as such in a tropical country like India, because it

Is in short supply
Is toxic and highly corrosive
Has a pungent smell
Vaporises at normal temperature

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Fertiliser Technology
Potassic fertilisers

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

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