Crop vernalization
Vernalization is defined as the low temperature promotion of flowering.
Thermal time accumulation is limited until vernalization requirements are met.
A vernalization factor that takes on values from 0-1 to
adjust thermal time
as calculated based on the following parameters.
These parameters are only relevant for winter crops.
Crop vernalization page
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Vernalization checkbox
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This checkbox enables vernalization.
When disabled, the vernalization parameters have no effect.
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Low temperature threshold for optimum vernalization (°C)
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The low end threshold temperature above which vernalization accumulation is optimum.
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High temperature threshold for optimum vernalization (°C)
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The high end threshold temperature below which vernalization accumulation is optimum.
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Vernalization requirement to start (days)
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The sum of vernalization-days at which the
vernalization factor
is set to a minimum and starts increasing towards 1.
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Vernalization day requirement to complete (days)
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is the sum of vernalization-days at which the vernalization requirement is completed.
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Minimum vernalization factor (0-1)
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The value of the
vernalization factor
at the beginning of the vernalization process.
This parameter should be set to zero if the vernalization-days required to start parameter is set larger than zero;
otherwise, it must be set greater than or equal to zero.