Experiment Station Record, Volume 22, 1910 Page: 58
xiii, 900 p. ; 24 cm.View a full description of this book.
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58 EXPERIMENT STATION RECORD.
Carolina poplars were attacked by the cotton leaf beetle (Lina scripta). An
entirely new wheat insect, probably an Eleodes, appeared among the wheat
fields, the larvae attacking the seed in the ground before it germinated.
Other insects mentioned are a sawfly (Monostege rose) which injured cultivated
roses, the Colorado potato beetle, potato stalk borer, and cabbage butterfly,
and a new grass-infesting scale (Eriopeltis coloradensis). A detailed
study of the life history of this scale showed it to be at least 2-brooded and
capable of becoming a very important pest of the wild-hay crop in the western
counties of the State.
Report of the entomologist, D. L. VAN DINE (Hawaii Sta. Rpt. 1908, pp. 1741).-Investigations
were made of the insects affecting live stock and bee keeping,
and in Oahu further work was undertaken on the insects affecting pineapple,
cotton, and mangels. The horn fly and sheep-maggot fly (Calliphora
dux) are discussed and brief mention is made of several important cotton insects,
of which a more detailed account is noted below.
The year is reported to have been marked by a decided impetus to the bee
keeping industry, the season's crop showing an increase from 600 tons to nearly
1,000 tons, and the honey and wax crop being estimated as worth $100,000.
The number of colonies at present in the Territory is not far below 20,000. A
list is given of the honey trees and plants found in the Islands.
The mealy bug (Pseudococcus citri) has become as serious a pest of the pineapple
as is the pineapple scale (Diaspis bromelic), previously noted (E. S. R.,
16, p. 683). Aside from the injury to the plant, the mealy bug injures the fruit
directly by its feeding and indirectly by acting as an agent in the spread of the
pineapple rot. During the season it was demonstrated that the scale and
mealy bug can be controlled in the field and that clean shipments of fruit are
possible by proper methods of fumigation.
Trial fumigation of plants before setting them in the field indicates that
plants will not stand as large a dosage of hydrocyanic gas as will fruit for shipment.
For plants to be set in the field it is recommended that for every 100
cu. ft. of space, 1 oz. potassium cyanid, 2 fluid oz. sulphuric acid, and 4 fluid oz.
of water be used, with an exposure of 1 hours. For fruit for shipment 1 oz.
of potassium cyanid for every 100 cu. ft. of air space is recommended. For
field treatment an emulsion of kerosene is recommended for the scale and
tobacco dust for the mealy bug.
A revised list is given of the injurious insects of Hawaii.
Report on the insects which affect the cotton plant in the Hawaiian
Islands, D. T. FULLAWAY (Hawaii Sta. Bui. 18, pp. 5-27, figs. 18).-Although
cotton has not up to the present time been one of the agricultural industries in
the Hawaiian Islands, experiments conducted by the station have given remarkably
promising results. This investigation of the insects affecting the cotton
plant has been conducted in view of the fact that the profit to be obtained
from its growth will largely depend upon the extent of the insect injury.
In Honolulu, a stem maggot has been found which attacks the plant soon
after germination. Although adults have not been bred it is thought to be a
common species, as carnations and pigeon peas have been noticed to suffer from
similar attacks. A wireworm which attacks germinating cotton is thought to
be Simodactylus cinnamomeus. Agrotis epsilon is the cutworm which has been
observed to attack cotton most frequently. Cotton suffers more or less from
Aphis gossypii, and at certain seasons the damage becomes a great handicap to
the plant. Adoretus tenuimaculatus has injured cotton to some extent through
attacking the foliage. The mealy bugs Pseudococcus virgatus and P. filamentosus
are serious pests, the former occurring in the Islands on Dolichos lablab,
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A topical, alphabetically arranged index to volumes 13-25 including experiment station records, publications reviewed, and foreign publications. In has a 'Consolidated Table of Contents' which lists all editorial notes and publications of the experiment stations and Department of Agriculture from the referenced volumes
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United States. Office of Experiment Stations. Experiment Station Record, Volume 22, 1910, book, 1910; Washington D.C.. (https://digital.library.unt.edu/ark:/67531/metadc5032/m1/71/: accessed May 18, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.