Take a sample each of specimens F (CLAY SOIL), G (LOAMY SOIL) and H (SANDY SOIL) and rub each between the thumb and forefinger. Put a sample of each of the ...
Question 1 Report
Take a sample each of specimens F (CLAY SOIL), G (LOAMY SOIL) and H (SANDY SOIL) and rub each between the thumb and forefinger. Put a sample of each of the specimens on your palm and add a little amount of water sufficient to wet it. Mix each sample with water. Attempt producing a roll and then a ring.
(a) Tabulate your observations from the experiment.
(b) Name two crops that can be grown on specimen H.
(c) (i) Which of specimens F,G, and H is preferred for maize productions?
(ii) Give three reasons for your answers in (c)(i).
(d) State three ways in which specimen l (EARTHWORM) is of economic importance in agriculture.
Answer Details
(a) Observations from the experiment
| Specimen | Feel when rubbed | Roll into thread | Bend into a ring |
|---|---|---|---|
| F (clay soil) | Smooth and sticky when wet | Rolls easily into a thread | Bends into a ring without breaking |
| G (loamy soil) | Slightly gritty but fairly smooth | Rolls into a thread | Cracks or breaks when bent into a ring |
| H (sandy soil) | Rough and gritty | Cannot be rolled into a thread | Falls apart; cannot form a ring |
(b) Two crops that can be grown on Specimen H (sandy soil)
- Groundnut
- Cassava
(c)(i) Specimen preferred for maize production
Specimen G (loamy soil).
(c)(ii) Three reasons
- It is rich in plant nutrients and organic matter.
- It has good water-holding capacity yet drains well.
- It is well aerated and has a good structure for easy root penetration.
(d) Three ways Specimen I (earthworm) is of economic importance
- Its burrowing improves the aeration and drainage of the soil.
- Its casts are rich in nutrients and improve soil fertility.
- It helps to decompose organic matter into humus and mixes the soil layers.
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