Fertiliser Technology
Potassic fertilisers

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

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Fertiliser Technology
Multistage operation (as in the case of catalytic oxidation of SO₂) is not carried out for NH₃ synthesis, because of

Higher pumping cost
Chances of entrainment and disturbance of catalyst bed
Comparatively higher pressure drop
High cost of the high pressure vessel used for the reactor

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