infield

An infield is the portion of a farm kept in continuous or near-continuous crop production, as opposed to outfield or marginal land used for grazing or left fallow. Historically, the distinction was sharp: infields received manure, tillage, and investment, while outfields were worked sporadically or used as common pasture. Modern infields tend to be the flatter, more accessible parcels closest to the farmstead, where machinery can operate efficiently and inputs justify their cost.

The term carries weight in rotation planning. A farmer's infield is where the rotation intensifies: cereals, legumes, roots, and green manures cycle through the same ground over three to seven years. This concentration allows for soil building through manuring and amendment, which would be economically unsustainable across scattered marginal plots. In systems using livestock, infield boundaries often mark where grazing animals are excluded during the growing season and where winter housing manure is eventually spread.

Infield in different systems

In traditional mixed farming, infields occupy perhaps 30 to 50 percent of holdings in areas with poor peripheral land. In intensive horticulture or market gardening, nearly the entire holding is infield. Upland or moorland farms may have tiny infields of 5 to 10 acres around the steading, with hundreds of acres of rough pasture outfield. The boundary is not legally fixed; it reflects where soil quality, drainage, and access make regular cultivation feasible.

Soil degradation is the primary hazard when infield boundaries shift without proper management. If outfield is brought into continuous cultivation without adequate preparation or rest, organic matter depletes rapidly and compaction develops. Conversely, abandoning historical infield land without breaking the crop cycle can leave residues and disease pressure. The infield concept, though old, remains a practical framework for identifying where inputs and labor are concentrated most profitably.