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Predictive DTMs

My carrots mature faster than Heirloom predicts. Can I correct it?

Yes, and your own records then drive every future harvest date. Change the crop’s or cultivar’s Average DTM in your Charts: Heirloom redraws its curve from your number, and new plantings follow it.

Carrot days to maturity curve for the farm’s location, with the dotted average line, the climate-adjusted curve and frost and growing period bands
The same carrot takes weeks longer sown in April than in June

For the plantings already in your plan, update them from your Charts: those using climate-adjusted days to maturity are recalculated from the new average. For one planting only, turn Use climate-adjusted DTM off: its days to maturity go back to its previous number, which you can edit. The steps are in Read a crop’s DTM curve.

Go deeper: the Predictive DTMs guide

Step-by-step help for this module.

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