ZIMSEC · A Level
Agriculture
7 topics7 with notes
0%
Study this subject topic by topic
Progress is saved on this device. Join free to keep it everywhere.
Form 5 · Lower 6 4 topics
- Soil science and soil fertility Factors: parent material, climate, organisms, topography and time (CLORPT). Processes: weathering, humification, leaching, eluviation and illuviation. Zimbabwe's soils range from infertile granite-derived sands (much of the communal areas) to fertile red clays derived from dolerite and basalt.
- Crop physiology and production Land preparation (conventional tillage versus conservation agriculture), seed selection (certified hybrids, open-pollinated varieties), plant population and spacing, planting date, fertilisation, weed control, irrigation and harvesting.
- Crop protection and integrated pest management Control is justified when pest damage would cost more than the control (economic injury level).
- Animal physiology and nutrition Pearson's square balances two feeds to a target protein level.
Form 6 · Upper 6 3 topicsExam year
- Animal breeding and reproduction Mashona, Tuli and Nkone cattle are hardy, tick-tolerant and fertile under harsh conditions; crossbreeding them with exotic breeds combines hardiness with productivity.
- Agricultural engineering, irrigation and mechanisation Human, animal (oxen, donkeys), mechanical (tractors) and renewable (solar pumps, wind). The power take-off (PTO), hydraulics and drawbar of a tractor.
- Agricultural economics, marketing and extension Weather, prices, pests and policy changes. Risk management: diversification, insurance (including index-based crop insurance), contract farming and forward selling.