Statement I : Super phosphate of lime can be assimilated by plants. . Statement II : Super phosphate of lime is soluble in water.

Superphosphate of lime, primarily consisting of monocalcium phosphate [Ca(H2PO4)2], is a widely used phosphatic fertilizer that can be readily assimilated by plants. Statement I is true because phosphorus is an essential macronutrient for plant growth and protein synthesis [c2, c5]. Statement II is also true as superphosphate is specifically manufactured to be water-soluble, with approximately 85–90% of its phosphate content dissolving in water [t1, t3]. This solubility is the direct reason for its high bioavailability; plants primarily absorb phosphorus in the form of soluble phosphate ions (anions) from the soil solution [t3, t4]. Because the water-soluble nature of the fertilizer ensures that the phosphorus is in a form that can be easily leached into the soil and subsequently taken up by plant roots, Statement II provides the correct scientific explanation for Statement I [t2, t8].

Sources

1. [1] Environment and Ecology, Majid Hussain (Access publishing 3rd ed.) > Chapter 1: BASIC CONCEPTS OF ENVIRONMENT AND ECOLOGY > Phosphorus Cycle > p. 26
2. [2] Indian Economy, Nitin Singhania .(ed 2nd 2021-22) > Chapter 9: Agriculture > FERTILISERS > p. 302
3. [3] https://www.sciencedirect.com/topics/agricultural-and-biological-sciences/phosphorus-fertilizers
4. [4] https://en.wikipedia.org/wiki/Superphosphate
5. [5] https://www.ams.usda.gov/sites/default/files/media/TripleSuperphosphate.pdf