Practice

Integrated Crop-Livestock Systems

Also known as: ICLS, mixed farming, crop-livestock integration

Farming systems that combine annual or perennial crops with livestock production on the same land base, with the animals integrated through the rotation rather than maintained as a separate enterprise. Animals graze cover crops and crop residues, deposit manure that fertilizes subsequent crops, control weeds and pests biologically, and provide additional revenue streams. Once standard across pre-industrial agriculture worldwide, ICLS was largely dismantled by mid-20th-century agricultural specialization (commodity grain on one farm, confinement livestock on another). The 21st-century regenerative-agriculture movement is, in significant part, the reintegration of crops and livestock.

Practical

Common ICLS forms:

Cover crop grazing — annual cover crops ([[cereal-rye|winter rye]], vetch, [[tillage-radish|daikon radish]], sorghum-sudan, cowpea) planted between cash crops are grazed by cattle or sheep, providing winter-or-summer forage and replacing some commercial fertilizer with manure.
Crop-residue grazing — corn stalks, wheat stubble, [[soybean|soybean]] residue grazed after harvest; cattle add forage value to what would otherwise be field residue.
Livestock-followed-by-crop — pasture in long rotation with cropping (e.g., 4 years pasture, 4 years grain); the pasture phase rebuilds [[soil-organic-matter|soil organic matter]] that supports the cropping phase.
Multi-species enterprise integration — Polyface-style operations where cattle, pigs, layers, broilers, and rabbits each occupy a niche in a rotational pattern across the same land base.
Silvopasture — integration of trees, pasture, and grazing animals on the same ground (see [[silvopasture]]).
Rice-and-fish or rice-and-ducks — Asian (especially Japanese, Vietnamese, Indonesian) integration of paddy rice with fish or ducks; ducks control rice pests, fish add protein, both deposit manure.

Scientific

Documented benefits in working ICLS:

[[soil-organic-matter|Soil organic matter]] — typically rises vs cropland-only systems, particularly when cover-crop grazing is integrated.
Nitrogen efficiency — manure deposited during grazing recycles nutrients within the system; less external N fertilizer needed.
Pest and weed pressure — typically lower; livestock break weed-and-pest cycles that monoculture cropping perpetuates.
Resilience — diversified income (crops + animals) reduces market-driven volatility for the operation.
Ecological function — biodiversity, water infiltration, habitat structure all typically richer in ICLS than in specialized cropping or confinement operations.

USDA-ARS, the Sustainable Agriculture Research and Education (SARE) program, and academic ag-economics research consistently document benefits, though specific outcomes vary widely by climate, soil, and management.

Cultural

The 20th-century specialization of American agriculture — separating grain farms from livestock farms, building confinement-feeding infrastructure, externalizing manure as waste — is the structural problem ICLS reintegrates. The cultural obstacle is significant: most U.S. land-grant agricultural research, extension, and lending infrastructure was built around specialization, not integration. Re-establishing fence, building water systems, and learning livestock skills on a grain operation are not just operational changes; they’re a different operating philosophy.

The contemporary Soil Health movement ([[gabe-brown|Gabe Brown]], Ray Archuleta, the SARE-and-Understanding-Ag network) treats ICLS as the system-level objective that practices like cover-cropping, [[no-till-farming|no-till]], and reduced-chemical inputs all work toward.

Lenses still to grow

Specific ICLS case studies ([[browns-ranch|Brown’s Ranch]] in North Dakota, [[joel-salatin|Salatin]]‘s Polyface, Will Harris’s White Oak Pastures)
The economics of ICLS vs specialized operations
Land-grant-and-extension reform efforts to support ICLS adoption
The [[rice|Asian rice]]-and-fish/rice-and-ducks tradition specifically

Sources

[[gabe-brown|Gabe Brown]], Dirt to Soil (2018)
[[joel-salatin|Joel Salatin]], Polyface Designs and operations writings
USDA-ARS Long-Term Agroecosystem Research Network publications
SARE (Sustainable Agriculture Research and Education) handbooks on integrated systems

Rooted in life.

What links here, and how

Inbound connections from across the wiki, grouped by lens and by relationship. These appear automatically — every entity page declares what it links to, and that data populates here on the targets.

Practical

practices

Cabin Brook Farm hay + custom beef = the bedrock small-farm livestock model

opposes

Factory Farming factory farming separates animals from cropping; ICLS reintegrates them

enables

Grass-fed 100% grass-fed beef requires year-round forage substrate, which drives the integration with cover-cropping, hay-baling, and pasture management
Mob Stocking — High Density ultra-high-density grazing of cover crops in cropping rotations is one of the load-bearing practices in modern integrated soil-rebuilding regenerative-grain operations
Pastured Poultry pastured-poultry integrates with vegetable, orchard, and grain rotations as a fertility-and-pest-management input

subset of

Polyface Method Polyface is the canonical small-scale ICLS demonstration in North America

6 inbound links · 5 outbound

Practical

Scientific

Cultural

Lenses still to grow

See also

Sources

What links here, and how