Linked from
The 7 pages that link to Weed control, each with the reason it gives.
FallowRelated: Cultivation or herbicides during fallow can suppress weeds before planting.
TillageRelated: Cultivation can uproot or bury weeds, especially before crop establishment.
Mechanical pest controlRelated: Hoeing, mowing, and uprooting remove weeds through physical action.
Plastic mulchRelated: Blocking light is one of plastic mulch’s main ways to suppress weeds.