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Crop-Weed Competition & Yield Loss

Interactive 3D field simulator of crop-weed competition: adjust weed density, emergence timing, crop planting density and herbicide control, and watch canopy growth drive yield loss through the Cousens (1985) hyperbolic yield-loss model.

Agronomy & Soil Physics3DModerate60 FPS📱 Mobile-adapted⇄ 2D version

This simulator visualizes how weed pressure erodes crop yield over a growing season, driven by the Cousens (1985) hyperbolic yield-loss model that underlies modern weed-management economics. A 3D field grows crop plants and weeds side by side from emergence, with weed competitiveness set by how early they emerge relative to the crop and the maximum possible loss shaped by how quickly the crop's own planting density closes the canopy. A herbicide/mechanical-control slider lets you see how partial weed control translates into effective density and, through the formula, into real tonnes of yield saved per hectare.

⚙ Under the hood

Grow a 3D field of crop plants and weeds through a season and see how weed density, emergence timing, planting density and control efficacy drive yield loss via the Cousens (1985) hyperbolic model.

agronomyweed scienceyield losscrop densityherbicidefarming

3D · Three.js / WebGL renderer · 60 FPS target · runs fully client-side, no install