Fertiliser Technology
Rock phosphate used for the production of phosphatic fertiliser is mined at

Amjhor (Jharkhand)
Talchar (Orissa)
Bailladella (M.P.)
Kiriburu (Bihar)

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Fertiliser Technology
Phosphatic fertilisers

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

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