The Ascospore Maturity Model presented here uses degree-days (base = 32F), accumulated from an early apple bud phase (green tip), to estimate the cumulative maturity of ascospores of the apple scab pathogen.
The model was initially developed at the University of New Hampshire and was refined in subsequent studies conducted in New York and Norway over a period of more than 25 years.
The model provides an estimate of ascospore maturity that is suitably accurate for many decisions that are made with respect to controlling apple scab.
To obtain an estimate of spore maturity at any of the locations below, simply click on the name of the site.
Ascospore Maturity Model Forecast - 2006
For guidance on how to interpret the model estimates and general information on epidemiology and control of scab, click on the topics below.
