Outlines of Economic Entomology. Designed As a Textbook for School And Colleges, And As a Reference-Book for Farmers And Gardeners
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To quickly assess the difficulty of the text, read a short excerpt:
There are two yearly broods.
Remedies. Ichneumon flies destroy some. The fallen fruit should be gathered or the hogs allowed to devour it, thus destroying many larvse. The best method, however, is to put bands around the trunks of the trees. The larvse will pupate in these and may be gathered and destroyed.
These bands should be examined every ten days or less from the last of May to the last of August.
ECONOMIC ENTOMOLOGY.
23 CABBAGE BUTTERFLIES.
In the list of injurious insects, Cabbage Butte...rflies occupy a prominent place, because their field of operation is so extensive, and the means of exterminating them, as yet, so imperfect.
THE EUROPEAN CABBAGE BUTTER-FLY (Pieris rapce.) was first noticed in this country in the year 1857 by a Mr.
Bowles of Quebec. Not long after, it spread into New England and New York, and a few years later it was plen- tiful all over the country.
It passes the winter in the pupa state, the perfect insect emerging early in the spring. There are about five broods Fig.
What to read after Outlines of Economic Entomology. Designed As a Textbook for School And Colleges, And As a Reference-Book for Farmers And Gardeners?
You can find similar books in the "Read Also" column, or choose other free books by Eberhart, Noble Murray, 1870- to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
There are two yearly broods.
Remedies. Ichneumon flies destroy some. The fallen fruit should be gathered or the hogs allowed to devour it, thus destroying many larvse. The best method, however, is to put bands around the trunks of the trees. The larvse will pupate in these and may be gathered and destroyed.
These bands should be examined every ten days or less from the last of May to the last of August.
ECONOMIC ENTOMOLOGY.
23 CABBAGE BUTTERFLIES.
In the list of injurious insects, Cabbage Butte...rflies occupy a prominent place, because their field of operation is so extensive, and the means of exterminating them, as yet, so imperfect.
THE EUROPEAN CABBAGE BUTTER-FLY (Pieris rapce.) was first noticed in this country in the year 1857 by a Mr.
Bowles of Quebec. Not long after, it spread into New England and New York, and a few years later it was plen- tiful all over the country.
It passes the winter in the pupa state, the perfect insect emerging early in the spring. There are about five broods Fig.
What to read after Outlines of Economic Entomology. Designed As a Textbook for School And Colleges, And As a Reference-Book for Farmers And Gardeners?
You can find similar books in the "Read Also" column, or choose other free books by Eberhart, Noble Murray, 1870- to read onlineMoreLess
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