What term refers to land that is not particularly good for growing crops?

The term that refers to land that is not particularly good for growing crops is "marginal areas." These are regions where the environmental conditions, such as poor soil quality, lack of moisture, or unsuitable climate, make agricultural activities challenging or less productive compared to more fertile regions. Marginal areas are typically characterized by limited agricultural potential, which can be due to various factors such as soil salinity, steep terrain, or a short growing season.

In contrast, fertile land is specifically known for its high productivity and capacity to support a wide range of crops. Industrial land is designated for manufacturing and production activities, while urban areas are regions that are densely populated with infrastructure supporting residential, commercial, and recreational activities. Each of these alternatives relates to different uses or characteristics of the land but does not define areas unsuitable for agriculture like marginal areas do.