Farming System · Farming system
Integrated Crop–Livestock Systems
Also known as: Mixed crop–livestock farming, Crop–livestock integration
Integrated crop–livestock systems deliberately combine crop and animal production on the same farm so that each component can supply resources — feed, forage, manure, and land use — the other can use.
Integrated crop–livestock systems are mixed farms in which crop and animal enterprises are deliberately connected rather than managed as separate, unrelated operations. Livestock commonly graze crop residues, cover crops, or dedicated forage, while manure and grazing effects cycle nutrients back onto cropland — creating flows of feed and fertility between the two enterprises.
This is one of the oldest and most widespread farming patterns worldwide, practiced at scales from smallholder mixed farms to larger commercial operations. It is also discussed as a way to recouple nutrient cycles that become separated when crop and livestock production specialize onto different, often distant, farms or regions.
What integrated crop–livestock systems are
What distinguishes an integrated crop–livestock system from a farm that simply happens to grow crops and keep animals is deliberate connection: the crop enterprise is planned with the livestock enterprise in mind, and vice versa, so that residues, forage, and manure move between them by design.
- Crop-residue grazing
- Allowing livestock to graze the residue left in a field after a crop is harvested.
- Manure nutrient cycling
- Returning nutrients from livestock manure to cropland to supply part of crop fertility needs.
- Rotational grazing
- Moving livestock between paddocks or fields on a planned schedule to manage forage and land use.
How resources flow between crops and livestock
- Crop residues and cover crops provide grazing or harvested feed for livestock
- Manure and urine return nutrients to cropland, supplementing other fertility sources
- Forage legumes can supply both livestock feed and biologically fixed nitrogen to the rotation
- Grazing timing is planned around crop calendars to avoid conflicts with planting or harvest
Common configurations
| Configuration | Description |
|---|---|
| Crop-residue grazing | Livestock graze the residue remaining after a cash crop is harvested |
| Grazed cover crops / forage rotation | A forage or cover crop phase in the rotation is grazed before the next cash crop |
| Manure-based nutrient cycling | Livestock manure is collected or deposited and returned to cropland as a nutrient source |
| Dual-purpose forage–grain crops | Forage legumes such as alfalfa are grown both for livestock feed and as a rotation component |
Managing the interactions
Making integration work well requires deliberate planning: timing grazing so it does not damage soil or delay the following crop, balancing the nutrient supply from manure against what the next crop actually needs, and providing fencing and water infrastructure to manage livestock movement across cropland.
Benefits and trade-offs
- Recycles nutrients between livestock and cropland
- Diversifies farm income and production risk across two enterprise types
- Provides additional feed sources from residues and cover crops
- Well-managed grazing can support soil-health goals alongside cropping
- Adds management complexity and labor relative to a single-enterprise farm
- Requires infrastructure such as fencing and livestock water access on cropland
- Grazing at the wrong time or soil moisture risks compaction
- Requires skills and knowledge in both crop and livestock management
Where it is used
Integrated crop–livestock systems are found worldwide in many forms, from smallholder mixed farms feeding household livestock on crop residues to larger commercial operations that incorporate grazing into row-crop rotations. The specific configuration used depends heavily on regional livestock species, crop choices, land availability, and market conditions.
Relationships
Evidence-backed connections in the knowledge graph.
Includes livestock
Scope & limitations
Geographic scope: Integrated crop–livestock systems are practiced worldwide, at scales from smallholder mixed farms to large commercial operations; specific practices depend on regional livestock species, crops, and land availability.
Climate context: Grazing windows, forage growth, and crop-residue availability all depend strongly on regional rainfall and temperature patterns.
- Integrated crop–livestock systems take many specific forms; this entry describes general principles rather than any one configuration.
- Nutrient-cycling and soil benefits depend on stocking rate, timing, and management, so this entry does not provide universal nutrient-replacement or yield figures.
- Grazing management must account for soil moisture and compaction risk, which vary by soil type and climate and are not detailed here.
Sources
This article draws on the following authoritative sources. See our sources & methodology for how they are selected.
- [1]FAO — Food and Agriculture Organization (opens in a new tab)Authoritative
Food and Agriculture Organization of the United Nations (FAO)
Cited for: Mixed crop–livestock farming systems overview
- Type:
- Intergovernmental organization
- Jurisdiction:
- Global
- Accessed:
- 2026-07-12
- [2]USDA NRCS — Natural Resources Conservation Service (opens in a new tab)Authoritative
USDA Natural Resources Conservation Service (NRCS)
Cited for: Grazing management and nutrient cycling on cropland
- Type:
- Government agency
- Jurisdiction:
- United States
- Accessed:
- 2026-07-12
Cited for: Research on integrated crop–livestock system interactions
- Type:
- Research institute
- Jurisdiction:
- Global
- Accessed:
- 2026-07-12
- [4]European Commission — Agriculture and rural development (opens in a new tab)Authoritative
European Commission, Directorate-General for Agriculture
Cited for: Policy context for mixed farming systems
- Type:
- Government agency
- Jurisdiction:
- European Union
- Accessed:
- 2026-07-12