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Agriculture · Q421

Soil Science

Graduate and Post Graduate · Agriculture · question 421

Q421

Single super phosphate contains

A.
16 - 20% P2O5
Answer
B.
20 - 25% P2O5
C.
25 - 35% P2O5
D.
40 - 48% P2O5

Answer: Option A

Solution

Answer: Option A
Solution:
Single Superphosphate was the first commercial mineral fertilizer. It contains 3 major nutrients namely (16 - 20%) Phosphorus P2O5, 11% Sulphur and 21% Calcium along with traces of many micro-nutrients.
The chemical formula of SSP is Ca(H2PO4)2.2H2O (Monocalcium Phosphate Dihydrate).
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