OPENER AGRICULTURE GRADE 10 Marking Sch.
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Word Editable SampleAPPLIED AGRICULTURE
GRADE 10
MARKING SCHEME
TERM 3: OPENER ASSESSMENT
Question 1
a) Identify the soil activity shown (1 mark)
Soil Ph. test
b) ONE test used to determine each soil property (3 marks)i. Soil texture: Feel test (ribbon test), sieve analysis.ii. Soil pH: Using pH meter, litmus paper, or universal indicator solutioniii. Soil porosity: Water infiltration test or porosity calculation
c) THREE ways soil profile influences crop production (3 marks)i. Depth affects root penetration and anchorageii. Texture affects water retention and drainageiii. Fertility affects nutrient availability for cropsiv. Structure affects aeration and tillage ease
Question 2
Preparing a fallow piece of land for maize.
a) FOUR activities during land preparation (4 marks)i. Clearing vegetation / weedingii. Ploughing / primary tillageiii. Harrowing / secondary tillageiv. Leveling the land/tertiary operations/any tertiary operations.
b) Differences between primary and secondary cultivation (4 marks)
Primary Cultivation
Secondary Cultivation
Done first to loosen soil
| Primary Cultivation | Secondary Cultivation |
|---|---|
| Done first to loosen soil | Done after primary tillage to refine soil |
| Uses ploughs, disc ploughs | Uses harrows, cultivators, rollers |
| Breaks up hard soil | Smoothens seedbed and removes weeds |
| Aims at deep soil turning | Aims at fine soil structure and aeration |
This document is professionally prepared and verified for Grade 10 (Senior Secondary) • Term 3.
- Competency-driven teacher inquiry models
- Guiding questions for active learner engagement
- Real-life problem-solving applications
- Formative & summative assessment indicators
- Performance levels (Exceeding, Meeting, Approaching)
- Practical assessment task breakdowns