
%0 Journal Article
%A Kochman, JK 
%T The effect of temperature on development of soybean rust (<I>Phakopsora pachyrhizi</I>)
%J Australian Journal of Agricultural Research
%D 1979/04/01
%V 30
%N 2
%P 273-277
%K 
%R https://doi.org/10.1071/AR9790273
%U https://www.publish.csiro.au/paper/AR9790273 
%X Uredospore survival and the development of soybean rust were examined across a range of temperatures. To determine the effect of temperature on uredospore survival, samples of dry uredospores were exposed to each of a series of eight temperatures for 8 h prior to a germination test on water agar at 21&#176;C for 4 or 16 h. Germination was significantly reduced when uredospores had been exposed to temperatures of 28.5&ndash;42.5&#176;C. Development of rust in soybeans was examined under four temperature regimes. Following inoculation with uredospores, plant foliage was sprayed with water and kept under conditions of dew at 21&#176;C for 16 h. Plants were then placed in a selected regime. The 17&ndash;27&#176;C regime provided the best conditions for rust development. These findings may partially explain some of the observations on rust occurrence in the field. 
