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Garden with Insight v1.0 Help: Plant daily decay group


Biomass reduction factor from declining LAI today: Today's biomass reduction factor from decreased photosynthetic efficiency because of declining leaf area index (LAI). This factor reduces the new biomass created today through photosynthesis.

Biomass lost from frost and day length today: The amount of plant biomass (dry weight) that has been lost (died) today because of the combined effects of frost and limited day length.

Biomass reduction factor from frost and day length combined today: Today's winter biomass die- off factor, considering the effects of declining day length and frost (the worst factor determines the damage). This factor reduces the live biomass of plants not suited to the climate. Young plants are the most susceptible.

Biomass reduction factor from day length today: Today's biomass reduction factor considering only the affect of declining day length. A value of 1.0 is worst (this is for amount lost). This factor is considered together with the frost factor to produce a combined winter die-off factor.

Biomass reduction factor from frost today: Today's biomass reduction factor considering only the affect of frost. A value of 1.0 is worst (since this is for amount lost). This factor is considered together with the day length factor to produce a combined winter die-off factor.

Snow cover factor for frost kill today: A factor from zero to one that buffers this plant from death by frost (because snow buffers the temperature of the soil surface). The more snow on the ground, the smaller the likelihood that the plant will die.

Biomass lost from water stress today: The amount of plant biomass (dry weight) that has been lost (died) today because of the effect of water stress (dry soil). Water stress is so important that it affects both new and existing growth. Damage increases with plant age.

Biomass lost from fruit decay today: The amount of plant biomass (dry weight) that has been lost (died) today because of fruit decay.

Biomass lost from falling leaves (if tree) today: The amount of plant biomass (dry weight) that has been lost (died) today because this plant is a tree and leaves have fallen from it. (The tree model in this version has not been tested.)

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Updated: March 10, 1999. Questions/comments on site to webmaster@kurtz-fernhout.com.
Copyright © 1998, 1999 Paul D. Fernhout & Cynthia F. Kurtz.