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Background and Aims
Black rot, caused by Guignardia bidwellii, is a polycyclic grape disease with repeated primary and secondary infections. In this work, the release of primary inoculum (both ascospores and conidia) from overwintered grape mummies was studied over a 3‐year period.
Methods and Results
A spore sampler was designed consisting of: (i) a funnel for collecting spores washed off from...
A new dynamic model for Erysiphe necator ascosporic infections on grapevine was developed. Between budbreak of vines and the time when the pool of ascospores is depleted, the model uses weather data for calculating, at daily intervals: curve of ascospore maturation; ascospore discharge events and relative proportion of the discharged ascospores; infection periods and their relative infection severity;...
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