PLANT PHYSIOLOGY
PLANT GROWTH
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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30
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20
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15
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None of the above
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Detailed explanation-1: -Both are derived from insoluble mineral phosphate which is activated into a soluble form by an acid. Single superphosphate is 20 percent phosphorus while triple superphosphate is around 48 per cent. It is commonly used on vegetables, bulbs and tubers, blooming trees, fruits, roses, and other flowering plants.
Detailed explanation-2: -The seven synthesized superphosphates (TSP10–TSP70) contain large proportions of phosphorus pentoxide (41.40–77.54%) and calcium oxide (18.20–35.70%) and minor oxide impurities (SO3, K2O, Fe2O3, Al2O3, and SiO2).
Detailed explanation-3: -The main nutrients in superphosphate fertiliser are: calcium (about 20%) sulfur (11–12%) phosphorus (9–10%).
Detailed explanation-4: -The phosphate concentration in superphosphoric acid usually varies from 72 to 76 percent. The P in this acid is present as both orthophosphate and polyphosphate.