Premium
Epidemiology of maize rust, Puccinia sorghi
Author(s) -
MAHINDAPALA R.
Publication year - 1978
Publication title -
annals of applied biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.677
H-Index - 80
eISSN - 1744-7348
pISSN - 0003-4746
DOI - 10.1111/j.1744-7348.1978.tb02622.x
Subject(s) - urediniospore , biology , spore , puccinia , growing season , rust (programming language) , inoculation , pathogen , plateau (mathematics) , botany , agronomy , horticulture , microbiology and biotechnology , mathematical analysis , mathematics , programming language , computer science , mildew
SUMMARY The development and spread of maize rust from an inoculated circular plot was studied during 1975. Results from a Burkard volumetric spore trap sited in the centre of the inoculated plot showed that the daily peak urediniospore concentration in the atmosphere occurred at about 1300 h. During the season atmospheric urediniospore concentration increased to a plateau and later decreased mainly through lack of host material. The spread of the pathogen away from the inoculated plot was related to the increase in atmospheric urediniospore concentration and warm temperatures. Disease gradients along the eight major compass directions demonstrated the influence of wind on the spread of the pathogen. As the season progressed gradients tended to flatten because of secondary spread of the pathogen.