Experiment Station Record, Volume 57, July-December, 1927 Page: 55
xvii, 1002 p. ; ill. ; 24 cm.View a full description of this book.
Extracted Text
The following text was automatically extracted from the image on this page using optical character recognition software:
1927] DISEASES OF PLANTS 55
matter and lower in moisture than healthy plants. The ash content of the
tops of healthy plants was slightly higher than that of the diseased ones,.
No consistent differences were found in the nitrogen content, and the disease
is not considered to be caused by excessive quantities of available nitrogen.
It is suggested, as the result of analyses of healthy and diseased plants, that
the false-blossom disease of the cranberry may be a virus disease similar to
the yellows and mosaic diseases of other plants.
The blue stripe wilt of the raspberry, R. V. HAnRIS (Jour. Pomol. and
Short. Sei., 4 (1925), No. 3-4, pp. 221-229, p1s. 3).-A disease of raspberry is
described as causing wilt and death of the canes from below upward. The
nature and the extent of injury are discussed. A Verticillium was very commonly
isolated from affected stools of many varieties. A control experiment
using the plate cultures of the Verticillium induced the characteristic field
symptoms. The disease is designated as raspberry blue-stripe wilt. The
control measures recommended are merely tentative.
"Ijeaf scorch " of strawberry, W. A. BIRMINGHAM (Agr. Gaz. N. . S. Wales,
36 (1925), No. 3, pp. 213, 214, igs. 3).-A4 strawberry leaf spot, specimens of
which were received from La Perouse, is said to be identical with a disease
recorded for the United States and Canada. It is due to the fungus Mollisia
earliana, the conidial stage of which is said to be Marsonia potentillae.
Downy mildew of the grape, H. L. MANUEL (Agr. Gaz. N. S. Wales, S6
(1925), No. 10, pp. 751, 752, fig. 1).-In the Hunter River district the vintage
was about 70 per cent below normal, due mainly to disease. It is estimated
that probably 40 per cent of the reduction was due to downy mildew.
A "shrivel" condition of grape berries, W. A. BIEMINGHAM (Agr. Gaz.
N. S. Wales, 35 (1924), No. 9, pp. 669-671, figs. 2').-In January, 1924, temperatures
as high as 104 F., preceded and followed by cool weather, were thought
by some grape growers to have increased attack by downy mildew (Plasmopara4
vititola), some crops being ruined in connection with the shriveling effect on
the berries. Investigation, however, showed that excessive transpiration had
overtaxed the water-supplying capacity of the root systems, so that moisture
was withdrawn from the berries, causing some to collapse.
Investigation of "bunchy top " disease of bananas, R. D. WATT, E. J.
GODDARD, and J. G. B. OSBORN (Queensland Agr. Jour., 21 (1924), No. 4, pp.
263-275, fig. 1).-This is a report by a committee appointed, as the result of an
agreement between the Commonwealth, New South Wales, and Queensland Governments,
to investigate aspects of banana bunchy top disease and to make
appropriate recommendations.
Banana culture in regions indicated is threatened with large losses or even
extinction, to judge from the history of the disease as briefly outlined and
from the present resulting situation. The planting of, disinfected corms in
soil treated with fungicides has failed to prevent the disease. Inquiry still
in progress has revealed no specific causal parasitic organism, although various
presumably predisposing or direct causes as suggested are discussed.
"I Bunchy top " in bananas-its Queensland history (Queensland Agr.
Jour., 21 (1924), No. 3, p. 254).-Credit is given to W. N. Gillies for historical
details regarding banana bunchy top in Queensland, where it probably appeared
between 1910 and 1912, though it was not formally reported until the year
1916 (by [A. H.] Benson), not regarded seriously until 1919, and not investigated
experimentally until 1920. Subsequent studies are mentioned in the
account by Darnell-Smith, which is noted below.
50170-27---5
Upcoming Pages
Here’s what’s next.
Search Inside
This book can be searched. Note: Results may vary based on the legibility of text within the document.
Related Items
Other items on this site that are directly related to the current book.
General Index to Experiment Station Record, Volumes 51 to 60, 1924-1929 (Book)
A topical, alphabetically arranged index to volumes 51-60 including experiment station records, publications reviewed, and foreign publications. In has a list of all editorial notes from the referenced volumes.
Relationship to this item: (Is Referenced By)
Tools / Downloads
Get a copy of this page or view the extracted text.
Citing and Sharing
Basic information for referencing this web page. We also provide extended guidance on usage rights, references, copying or embedding.
Reference the current page of this Book.
United States. Office of Experiment Stations. Experiment Station Record, Volume 57, July-December, 1927, book, 1928; Washington D.C.. (https://digital.library.unt.edu/ark:/67531/metadc5099/m1/72/: accessed April 26, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.