On the Control of Timber Insects, of the Hemileuca Moth And the Pear Thrips ..
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140, applied at the time the young worms are hatching.
Of the adults only the males have been known to be attracted to electric lights and windows, and these only under certain condi- tions (Ent. Bull. No. 8 5, p. 86), but this does not prove that a trap torch as described on pages 3 and 4 of my Circular No. 145 would not trap both males and females in enormous quantities, for, as a sam- ple, the groundbeetles which constituted most of the 1,500 insects that made up my first catch, do not frequ...ent electric lights and windows While these two different uses of a torch as a means of controll- ing the hemileuca are the only practicable artificial means known, there is another and much better means of control by way of utilizing natural enemies. This consists in the use of poultry.
The Bureau of Entomology is experimenting with parasites.
Of course, parasites, with or without the aid of the Bureau, may gain the upperhand and in turn again lose it. The results, thus far, are trifling. On pages 86 to 93 of Entomology Bulletin No.
What to read after On the Control of Timber Insects, of the Hemileuca Moth And the Pear Thrips ..?
You can find similar books in the "Read Also" column, or choose other free books by Reinlein, Fred, 1866- [from Old Catalog] to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
140, applied at the time the young worms are hatching.
Of the adults only the males have been known to be attracted to electric lights and windows, and these only under certain condi- tions (Ent. Bull. No. 8 5, p. 86), but this does not prove that a trap torch as described on pages 3 and 4 of my Circular No. 145 would not trap both males and females in enormous quantities, for, as a sam- ple, the groundbeetles which constituted most of the 1,500 insects that made up my first catch, do not frequ...ent electric lights and windows While these two different uses of a torch as a means of controll- ing the hemileuca are the only practicable artificial means known, there is another and much better means of control by way of utilizing natural enemies. This consists in the use of poultry.
The Bureau of Entomology is experimenting with parasites.
Of course, parasites, with or without the aid of the Bureau, may gain the upperhand and in turn again lose it. The results, thus far, are trifling. On pages 86 to 93 of Entomology Bulletin No.
What to read after On the Control of Timber Insects, of the Hemileuca Moth And the Pear Thrips ..?
You can find similar books in the "Read Also" column, or choose other free books by Reinlein, Fred, 1866- [from Old Catalog] to read onlineMoreLess
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