(a) ldentify specimens B, C, and D. Specimen B; Specimen C; Specimen D; %% (b) Give two observable physical properties of each. (C) State two main nutrients...

Answer Details

(a) Identification of specimens

• Specimen B: NPK (compound) fertilizer.
• Specimen C: Wood ash.
• Specimen D: Animal dung (organic manure).

(b) Two observable physical properties of each

(c) Two main nutrients supplied by each of specimens B and D

• Specimen B (NPK fertilizer): supplies Nitrogen (N) and Phosphorus (P), together with Potassium (K).
• Specimen D (Animal dung): supplies Nitrogen (N) and Phosphorus (P), together with Potassium (K).

(d) Two methods of application of specimen C (wood ash) on the field

1. It can be spread on the farm before ploughing, or worked into holes before planting.
2. It can be placed at the base of the plant stem, or applied in rows before ridging.