Many epidemiological models for plant disease include host demography to describe
changes in the availability of susceptible tissue for infection. We compare the effects of using …

In this paper we study the dynamical properties of models for botanical epidemics,
especially for soil–borne fungal infection. The models develop several new concepts …

Onstad and Kornkven (9) defined endemicity (of a plant disease) as “the persistence or
constant presence of a pathogen in an ecologically proper spatial unit over many …

Motivated by questions such as “Why do some diseases take off, while others die out?” and
“How can we optimize the deployment of control methods,” we introduce simple …

This paper is intended as a contribution to fulfilling the'need to link theory in plant disease
epidemiology with similar theory in other areas of population biology'(Jeger 1986). More …

A simple model was developed which represented a rectangular, regularly-spaced planting
of host trees divided initially into a diseased area and a healthy area. The purpose of the …

A graphical plot of disease intensity (y) versus time (t) is known as a disease progress curve
(DPC). For many purposes, this is the primary depiction of an epidemic, serving to …

An analytical model of a pandemic, initiated by a single focus and spreading over a
continent, is developed using foci as the smallest units of disease and fields as the smallest …

The nature of pathogen transport mechanisms strongly determines the spatial pattern of
disease and, through this, the dynamics and persistence of epidemics in plant populations …

Articles variations of generic risk-assessment methods to determine the risk of certain plant
pathogens (and other pests) being nondeliberately introduced, spreading, and causing …