Page images
PDF
EPUB
[merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][ocr errors][ocr errors][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][ocr errors][ocr errors][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][ocr errors][ocr errors][merged small][subsumed][ocr errors][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][subsumed][ocr errors][ocr errors][merged small][merged small][merged small]
[merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][ocr errors][ocr errors][ocr errors][ocr errors][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][ocr errors][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small]

Thus it will be seen from the preceding table that work was done in 108 towns last year; that 418 gipsy moth infestations were found and 327 of them sprayed with lead arsenate, using 8,483 pounds or nearly four and one-fourth tons; that 10,007 egg-clusters were destroyed with creosote, and 6,315 larvae destroyed, besides those which may have been killed by the spray; also that 6,975 miles of roadway were scouted by the State men in this

work. In the towns scouted by the Federal men, no record was kept of the number of miles of roadway covered.

FINANCIAL STATEMENT.

RECEIPTS

Appropriation for biennial period ending June 30, 1925..... $100,000.00

Classified Expenditures for the Period Ending June 30, 1924

[blocks in formation]

A somewhat detailed account of the different parasites and predatory insects which have been introduced into this country to attack the gipsy moth may be found in the 22nd Report of the State Entomologist, page 313 (Report of this Station for 1922, page 313) and need not here be repeated. In last year's report, page 265, a table shows the number of individuals of the Japanese egg parasite, Schedius kuvanae How., which were liberated in Connecticut in 1923. In 1924, there were liberated in Connecticut, 733,650 Schedius kuvanae, 243,000 of another egg parasite, Anastatus bifasciatus Fonsc., by State men, and 3,000 of a larval parasite, Apanteles melanoscelus Ratz., by Federal men. All of these parasites were reared at the Government parasite laboratory in Melrose Highlands, Mass., and furnished by Mr. Burgess for distribution in Connecticut. The following list, also furnished by Mr. Burgess, shows the number of each kind of parasite liberated, as well as the towns where they were planted:

GIPSY MOTH PARASITES Liberated in CONNECTICUT

Year Ending June 30, 1924

[blocks in formation]

Unquestionably much benefit has resulted from the combined attacks of the various parasites in the New England area, though the reduction in the numbers of the gipsy moth should not be attributed wholly to the action of parasites. It is the opinion of all men engaged in gipsy moth work, that creosoting of egg-clusters, spraying around infestations, and low temperature which

kills the eggs, are in some measure responsible for the decrease and together with the parasites, have brought about the present conditions. We hope that these gratifying conditions may continue but this is uncertain. It is probably true that there was less stripping in Massachusetts in 1924 than for many years, and as shown in the table on page 255, there were fewer colonies found in Windham County (the County longest continuously infested) than in 1917. These results must in part be accredited to the work of parasites, but it is still too early to abandon the field to them and appropriations should be continued for several years until they surely and permanently gain control of the gipsy moth.

BARRIER ZONE.

The plan of establishing a barrier or control zone, beyond which the gipsy moth will not be allowed to gain a foothold, was first advocated at a conference held in Albany, November 16, 1922. The proceedings of this conference were published as Agricultural Bulletin 148, Department of Farms and Markets of the State of New York, Albany, December, 1922, and the resolutions were included in the Report of this Station for 1922, page 325. Such a zone would be of no value unless extremely careful and thorough work is maintained in it, and this work is obviously the province of the Federal forces aided by those States west of the zone. However, the success of the plan depends principally upon appropriations adequate to carry it out. Nevertheless, to some extent its success will depend upon the degree of infestation near and east of the barrier zone, and here is where the New England States can help; for if the degree of infestation in western New England is slight, it will be much easier to maintain such a zone. If this area were intensely infested, and the condition favorable for windspread westward, infestations would certainly be carried into and beyond this zone, and it would be difficult and expensive to eradicate them.

This proposed barrier or control zone extends from the Canadian border on the north to Long Island Sound on the south, and includes Lake Champlain and the Hudson River with a strip of land east and west of both, until the Highlands are reached, when it is deflected toward the southeast, crossing Connecticut in a line from New Milford to New Haven. This zone is approximately thirty miles in width.

QUARANTINES.

As the Connecticut quarantine was last revised and became effective on July 20, 1922, and many additional towns have since been found infested and placed under Federal quarantine, it seemed best to make the State quarantine coincide with the Federal quarantine. Consequently, after due hearing as provided by Section 2106 of the General Statutes, the following quarantine order was

« PreviousContinue »