Agroecology

Agroecology treats a farm as an ecosystem and asks how ecological processes — the cycling of nutrients, the flow of energy, interactions among organisms, and the regulation of pests and diseases by natural enemies — can be strengthened to support production. Where conventional intensification often addresses a limiting factor with a purchased input, agroecology looks first to redesign the system so that the underlying function is provided ecologically.

It is frequently described through sets of principles or elements covering diversity, synergies between system components, efficiency, recycling, and resilience, alongside social and economic dimensions such as fairness and the value of local and traditional knowledge.

• Diversifying crops and integrating livestock to spread risk and create beneficial interactions
• Recycling nutrients and organic matter within the farm, for example through manures, composts, and residues
• Building soil health to underpin nutrient supply and water regulation
• Encouraging natural enemies and habitat to help regulate pests and diseases
• Using rotations, cover crops, and intercrops to break pest cycles and improve resource use

These practices are combined in ways that suit the local environment and community rather than applied as a uniform package, which is why agroecological systems look different from place to place.

Agroecology is promoted internationally as a pathway toward more sustainable and resilient food systems, particularly where reducing dependence on costly external inputs, conserving biodiversity, and strengthening the position of smallholder farmers are priorities. Its systems perspective connects farming practice with wider questions of food security, livelihoods, and environmental stewardship.

Redesigning systems to rely more on ecological functions can require knowledge, labour, and a transition period, and outcomes depend heavily on context. Agroecology is debated in terms of how it balances productivity, sustainability, and social goals across different settings, and this entry presents it as a framework and approach rather than asserting universal outcomes.