Dose-response curve
A graph showing how a measured response changes across a range of doses or input levels, used to reveal thresholds, useful ranges, and saturation.
A dose-response curve places the amount of an input on one axis and the measured biological response on the other. Using several input levels shows the shape of the relationship rather than only whether two treatments differ.
A response may rise linearly, level off as another factor becomes limiting, decline at excessive doses, or show a threshold before changing. A saturation point can be inferred only when measurements extend far enough to demonstrate a plateau.
Cannabis researchers can use dose-response curves for inputs such as light, carbon dioxide, nutrients, or plant-growth regulators. Conclusions apply to the tested range and conditions; extending the curve beyond them is extrapolation.