Strategies to increase food production and crop yield
Explain how crop choice, water management, technology, livestock systems and pest control can increase production, then judge the trade-offs.
Section Paper 2 · Environmental Management in Context
This original StudyForA sequence supports Cambridge IGCSE Environmental Management 0680 Topics 1–4 for exams in 2027, 2028 and 2029. Named local examples are chosen by the learner and centre; verify current conditions and local context with reliable sources. It is not a Cambridge paper, official grade or complete course.
Before you begin
- Use the 2027–2029 syllabus and check your exam year and centre's entry arrangements. Topics 1–4 are taught on this page; Topics 5–7 are still being built.
Work on paper. Try each question before revealing help, and explain why your method works.
Quick readiness check
What is crop rotation?
What you will learn
- Explain how crop choice, water management, technology, livestock systems and pest control can increase production, then judge the trade-offs.
- Use evidence from an unfamiliar case to compare options and justify a context-sensitive judgement.
Improve diversity, timing and water use
Mixed cropping, intercropping and crop rotation combine crops or change what grows over time. They can use land and nutrients differently and help manage some pests, although the result depends on crop compatibility and planning.
Irrigation improvements include drip or trickle irrigation, rainwater harvesting and automated watering. They can target water more carefully, but their success depends on cost, water availability, maintenance and the local climate.
Use technology and adapt production systems
Mechanisation can speed or scale farm operations. Genetically modified organisms change genetic material by removing, changing or inserting genes to provide favourable characteristics; assess the specific trait and context rather than making a blanket claim.
Controlled environments include greenhouses, hydroponics and aeroponics. Other strategies are managed livestock rotation, urban farming, agroforestry, inorganic NPK fertilisers and organic fertilisers such as crop residue, manure and mulch.
Manage pests and evaluate the package
Chemical pest control includes insecticides, herbicides and fungicides for insects, weeds and fungi respectively. Biological control uses living organisms to manage pests.
A strategy can raise yield but also use energy, water, money or land, or create pollution and ecological effects. Match the method to the constraint and evaluate results using yield, input use, soil and water evidence.
Sources for this lesson
Pause and explain
What distinguishes biological pest control?
Worked example
A dry-region farm has uneven watering and rising insect damage. Recommend two relevant strategies and explain what each could improve and what must be checked.
Show the worked solution
- Drip irrigation can deliver water closer to crop roots and reduce some water loss, if supply and maintenance are adequate.
- A suitable biological control or targeted insecticide may reduce insect damage; effects on other species and resistance should be monitored.
- Compare yield and water use before and after, and check that the selected methods fit the crop and ecosystem.
Answer Drip irrigation may use available water more precisely, while a carefully selected pest-control method may reduce crop damage. Both require monitoring of cost, water supply and effects on other organisms.
Try a topic test
Choose Easy, Normal or Difficult. Save your answers and open worked review after finishing.
Test this topic →From guided practice to a new situation
Write your answer and reasoning first. Use a hint only if you are stuck. The model solution is for self-checking; your written work is not automatically marked.
A greenhouse uses hydroponics and automated watering. Explain the production strategy and one factor that could limit its use.
Give me a hint
Identify the growing system, then consider its inputs and access requirements.
Compare my reasoning
- Hydroponics grows plants without ordinary field soil, with nutrients supplied in a managed solution.
- A greenhouse is a controlled environment; automated watering can deliver water according to a schedule or sensor.
- Capital, energy, water, nutrient management and maintenance can limit use, depending on local conditions.
The farm combines hydroponics, greenhouse production and automated watering. These methods can control growing conditions, but cost, energy, water and technical maintenance affect their suitability.
Look for these in your work
- Methods correctly identified
- Potential mechanism explained
- Relevant limitation included
Compare inorganic NPK fertiliser with manure and crop residue for increasing crop yield. State one possible benefit and one risk or limitation of each.
Give me a hint
Compare nutrient supply with soil structure and how inputs are sourced and managed.
Compare my reasoning
- Inorganic NPK supplies nitrogen, phosphorus and potassium ions in a managed form, but excess application can harm water quality.
- Manure and crop residue provide organic material and nutrients and can improve soil structure, but nutrient content and timing can vary.
- A suitable choice depends on crop need, soil tests, access, cost and careful application.
NPK fertiliser can supply specific ions predictably but can cause pollution if overused. Organic inputs can improve soil structure and add nutrients, though their availability and nutrient content may vary. Use soil and crop evidence to manage either input.
Look for these in your work
- Both fertiliser approaches explained
- One limitation or risk for each
- Recommendation linked to crop and soil evidence
A farm increases yield with monoculture, mechanisation and pesticide use. Design a monitoring plan that could show whether the strategy is improving production sustainably.
Give me a hint
Track output and the land and ecological conditions that support future crops.
Compare my reasoning
- Measure crop yield over several seasons and record input, labour and machinery costs.
- Monitor soil condition, water use and signs of erosion or pollution.
- Check pest levels, resistance or effects on pollinators and other organisms; compare results with a mixed or rotated area if practical.
A useful plan tracks yield, costs, soil, water and pest/ecological effects over time. A short-term yield increase is not enough; compare trends and a suitable alternative or baseline before judging sustainability.
Look for these in your work
- Yield measured over time
- Land and water conditions monitored
- Pest and non-target effects considered
Common mistakes
- Listing irrigation without explaining water use
- Treating every genetically modified trait as identical
- Assuming a chemical pesticide affects only the target pest
- Recommending inputs without considering access and cost
What can you explain now?
Which set contains only controlled-environment methods named in the syllabus?
Compare with the explanation
Greenhouses, hydroponics and aeroponics
The correct answer is “Greenhouses, hydroponics and aeroponics”. The alternatives “Terracing, bunds and windbreaks” and “Subsistence, commercial and pastoral farming” do not match the syllabus concept. Explain how crop choice, water management, technology, livestock systems and pest control can increase production, then judge the trade-offs.
After trying it yourself, choose your next review. This is your self-assessment.
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Make it stick
Explain three yield strategies from different groups and identify one condition or trade-off for each.
If you needed the solution, close it and solve the problem again from a blank page. A correct answer is stronger when you can explain the reason for each step.