Studies on a Foot-rot of Cereals Caused by Helminthosporium sativum P., K., & B.
Date
1925-06
Authors
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ORCID
Type
Degree Level
Masters
Abstract
This disease appears to be relatively new to science although
it is probable that it has existed, without recognition,
for a considerable length of time. At first, attention was drawn
to only the leaf spotting phase of the disease, when Pammel (19)
in 1909 first referred to it. In 1910, Pammel and his co-workers
(20) described the causal fungus, naming it Helminthosporium
sativum. Bolley (5), however, was the first to point out that
fungi such as this were present in soil, and tended to accumulate
in wheat-sick soils following a period of intensive cropping.
This observation was confirmed by Beckwith (4). Stakman (23)
found that li. sativum attacked not only the leaves but also the
stems and roots of barley and rye, causing a seedling blight and
a root rot. She found the fungus would attack the leaves of certain
grasses as well. The studies of Christensen (6) showed that
li. sativum had a much wider host range than that formerly recognized
and there were marked differences in varietal susceptibility
to attack. Henry (13) found that li. sativum commonly occurred in
discolored seed of wheat.
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Citation
Degree
Master of Science (M.Sc.)
Department
Agricultural and Bioresource Engineering
Program
Agriculture