Report on the Agricultural Experiment Stations, 1932 Page: 22
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22 REPORT ON THE EXPERIMENT STATIONS, 1932
lina station has found and put into one half of the winter wheat crop of
practical use a cheap and simple soap Washington in 1931, was of these vamixture
which effectively controls this rieties.
insect. Wilt-resistant strains of cotton are
Celery leaf tier.-The celery leaf tier now available to growers as a result
(Phlyctaenia rubigalis) is a major of investigations by the Department
celery insect pest in Florida and in and several of the experiment stations,
seasons of high temperatures causes including the Arkansas station among
serious damage to the celery crop. others, and their use by cotton growThe
Florida station found that fresh ers is reducing the losses from this
pyrethruin dust, either alone or mixed destructive disease.
with lime or sulphur, applied with a Black shank of tobacco became so
traction duster on dry plants on calm prevalent in west Florida as to
days during the immature larval stage threaten the entire shade-grown cigarof
the insect, gives effective control. wrapper tobacco industry of that disRed
spider.-The red spider is a very trict, valued at approximately $1,800,troublesome
orchard and greenhouse 000 annually. The Florida station
pest. The Massachusetts station has has, however, succeeded in producing
found miscible oils which effectively resistant strains (nos. 94 and 3091)
control red mites in the orchard. It which are being grown commercially
has also found that the use of naph- with satisfactory results not only in
thalene as a fumigant is a satisfactory resistance but in yield and quality of
method for controlling the red spider the tobacco produced. A strain of burin
the greenhouse. ley tobacco resistant to root rot, which
has; caused large losses to growers, has
PROTECTION AGAINST PLANT DISEASES been developed by the Kentucky station
and appears to be giving good reDiseases
of crops not only increase sults in practice.
the cost of production but impair the General use of yellows-resistant
quality of the product. The experi- strains of cabbage, originated by the
ment stations are making notable con- Wisconsin station, has saved an intributions
to their control through dustry which otherwise was threatcultural
methods, application of dusts ened with virtual extinction in some
and sprays, and also through the de- sections because of the ravages of the
velopment of resistant varieties. disease. Cooperating with the DeBreeding
disease-resistant crops.-Breed- partment, the station has continued
ing of resistant or immune varieties to develop improved strains of yellowshas
proven to be an effective means of resistant cabbage especially adapted
helping to control plant diseases. to, different conditions and uses. SimThere
are numerous examples of re- ilar work has' been reported recently
sistant strains and varieties of field by the Iowa station.
crops developed by the experiment sta- Jersey or Thousand Headed kale is
tions and the Department of Agricul- the main crop grown for green feed
ture, which are now being used with in the Petaluma poultry-raising disadvantage
by growers. A few ex- trict of California. Spread of kale
amples recently reported are referred yellows made it impossible for many
to hereafter. growers to produce sufficient kale for
A number of bunt-resistant lines of their needs. The California station
hard red winter wheat have been de- has developed a strain of kale that is
veloped by the Nebraska station. Se- highly resistant to the disease, and
lections of Burt oats that are highly poultry raisers are growing it with
resistant to stem rust have also been very satisfactory results.
established by this station. Many of Mildew Resistant cantaloupe no. 50,
these selections are characterized by resulting from 5 years' work by the
high yield and other desirable qualities California station and the Departand
promise to greatly reduce disease meant, has proven superior in yield to
hazards. other varieties commonly grown, and
Peatland barley, a variety origi- is credited with saving the melon innated
by the Minnesota station, is re- dustry of the Imperial Valley, estisistant
to stem rust and appears also mated to have an annual value of
to be resistant to scab diseases which $10,000,000, which was threatened by
are causing discouraging losses. mildew.
The general use of Ridit and Albit, A strain of the Golden Self Blanchsmut-resistant
varieties of wheat de- ing type of celery of superior market
veloped by the Washington station, has quality and extremely resistant, if not
greatly reduced loss from smut. Over immune, to Fusarium wilt has been
12,000,000 bushels, or approximately developed by the Michigan station.
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United States. Office of Experiment Stations. Report on the Agricultural Experiment Stations, 1932, book, July 1933; Washington D.C.. (https://digital.library.unt.edu/ark:/67531/metadc4992/m1/24/: accessed April 18, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.