Abstract
The influence of heat treatment on the germination of propagules of Phytophthoro parasitica was examined in three citrus groves during 1986. Temperatures between 12 and 34 C and lengthened incubation time increased recovery of propagules from soil. This effect could be expressed in terms of accumulated heat units calculated as degree-days. Similar numbers of propagules germinated from soils exposed to different temperatures when the durations of heat treatments were adjusted to ensure that soils received equivalent numbers of heat units (...)
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