(a) Identify specimens A(NPK fertilizer ), B(Ammonium Sulphate), and C(Lime). (b) State the main nutrient(s) which can be released to the soil for crop's us...

Answer Details

(a) ldentification of specimens:

A = NPK fertilizer 

B = Ammonium Sulphate

C = Lime 

(b) The main nutrient(s) released by each specimen are 

Specimen A = Nitrogen, phosphorus, and potassium; 

Specimen B = Nitrogen

Specimen C = Calcium.

(c) Ammonium Nitrate and urea can be used as substitutes for specimen B.

(d) It can increase the acidity of the soil

(e)

(i) Role of specimen C in crop production are: 

(1) It helps to reduce soil acidity. 

(2) It Increases the activities of soil living organisms. 

(3) It improves the soil structure. 

(4) It increases water percolation in soils. 

(ii) Role of Specimen C in fish production are: 

(1) It serves as an additional source of calcium for bone development in fish. 

(2) It reduces turbidity in the fish ponds through flocculation.

(f)

(i)Quicklime 

(ii) Slaked lime 

(iii) Basic Slag. 

(iv) Dolomite 

(v) Calcium carbonate.