ZIMSEC O-Level Agriculture
5.3.6Crop protection
Crop protection in ZIMSEC O-Level Agriculture: what the syllabus expects you to know, the learning objectives and how to practise.
Subtopic121 practice questions6 lessons
Learning objectives
What the syllabus expects you to be able to do.
- 5.3.6.1Form 1: explain the effects of pests on crops and classify pests by feeding habits.
- 5.3.6.2Form 1: classify plant diseases by causal organism and describe their effects on crops.
- 5.3.6.3Form 1: discuss the harmful and beneficial effects of weeds and differentiate annual from perennial weeds.
- 5.3.6.4Form 2: describe one pest with complete metamorphosis and one with incomplete metamorphosis.
- 5.3.6.5Form 2: discuss how plant diseases spread and identify the general symptoms of fungal, bacterial and viral diseases.
- 5.3.6.6Form 2: classify weeds as grasses, sedges and broad-leaved weeds and identify how common weeds spread.
- 5.3.6.7Form 3: explain methods of pest control with their advantages and disadvantages, the significance of integrated pest management and the mode of action of the main groups of pesticides.
- 5.3.6.8Form 3: describe methods of disease control and identify suitable chemicals for controlling crop diseases.
- 5.3.6.9Form 3: describe methods of weed control, differentiate herbicides as selective or non-selective and by timing of application, compare the effectiveness of methods and calibrate a knapsack sprayer.
- 5.3.6.10Form 4: explain precautions in using and storing agro-chemicals, describe their toxicity levels, calculate mixing ratios and label the parts of a knapsack sprayer.
Lessons
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Controlling crop pests and integrated pest management
40 min
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Crop pests: feeding groups, life cycles and named pests
40 min
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Plant diseases: fungi, bacteria and viruses and their control
40 min
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Using farm chemicals safely and calibrating a knapsack sprayer
45 min
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Weed control methods and types of herbicide
40 min
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Weeds: harm, benefits, groups and how they spread
35 min
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Sample question
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