Bestøvning er processen, hvor pollen overføres fra støvbladet til støvfanget.
Landbrugsafgrøderne har forskellig måde at få flyttet pollen på. Det kan være ved simpel bevægelse, ved hjælp af vind eller måske ved hjælp af insekter.
En god bestøvning er vigtig for at sikre en god befrugtning, udvikling af frugt og frø, og dermed et godt udbytte af afgrøderne.
På denne side ses et eksempel på en rapsplante, hvor en bi er i færd med at bestøve en af rapsens blomster.
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