(a) ldentify specimens G, H and I.
(b) Give two observable physical properties of each.
(c) State two main nutrients supplied by each of the specimens H and l.
(d) State two methods of application of specimen C on the field.
Explanation
(a) Specimen G is NPK or compound fertilizer Specimen H is wood ash and Specimen D is animal dung.
(b) The observable physical properties of the specimens are: Specimen G = NPK Hygroscopic. (i) The specimen is hard to touch, i:e; it is solid and strong. (ii) It is granular in nature and (iii) It is grey in colour and odourless.
Specimen H wood ash
(i) It is grey in colour. (ii) It is smooth and velvety to touch (iii) It is powdery in form (iv) It is dry and odourless.
Specimen D animal dung (i) It is dark brown or black in colour (ii) It has bad odour. (iii) It is bulky in nature. (iv) It is always sticky and soft in its fresh form.
(c)The major nutrients supplied by the specimen are: Specimen G-N, - P-K, Specimen I-N,-P,-K.
(d) The methods of applying specimen H on the field are: (i) It can be spread on the farm before ploughing. (ii) It can be put in holes, before planting (iii) It can be placed at the base of the plant stem. (iv) It can be allowed to be in rows before ridging etc.