Journal of Economic Entomology, Volume 6Entomological Society of America, 1913 |
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Page 11
... noted . Porto Rico , Rio Piedras , -D . L. Van Dine . 209. General entomological survey of the sugar cane areas of Porto Rico . We have now a list of some twenty ( 20 ) injurious species together with many asso- ciated species . The ...
... noted . Porto Rico , Rio Piedras , -D . L. Van Dine . 209. General entomological survey of the sugar cane areas of Porto Rico . We have now a list of some twenty ( 20 ) injurious species together with many asso- ciated species . The ...
Page 57
... noted in choice between Honduras and Japanese types . In general , it may be said that the adults prefer to feed on young plants , rather than on those of advanced size . Infes- tation of the rice field by the adults is invariably co ...
... noted in choice between Honduras and Japanese types . In general , it may be said that the adults prefer to feed on young plants , rather than on those of advanced size . Infes- tation of the rice field by the adults is invariably co ...
Page 61
... noted , however , that while excessive flooding may be necessary at times to partially save injured fields , the practice itself does not destroy any of the insects and a continuation of the practice can hardly result otherwise than in ...
... noted , however , that while excessive flooding may be necessary at times to partially save injured fields , the practice itself does not destroy any of the insects and a continuation of the practice can hardly result otherwise than in ...
Page 78
... noted , while in the adjoining unthinned block a slight increase has been observed . It is apparent that it will be necessary for a number of years to pass before the final results of this work can be given , but the information at hand ...
... noted , while in the adjoining unthinned block a slight increase has been observed . It is apparent that it will be necessary for a number of years to pass before the final results of this work can be given , but the information at hand ...
Page 87
... noted to feed on the spiders . Stethorus picipes Csy . This is the commonest species of the Coccin- ellida that was found to feed on the red spider , in fact , the only one of any consequence . Feeding records on the larva of this ...
... noted to feed on the spiders . Stethorus picipes Csy . This is the commonest species of the Coccin- ellida that was found to feed on the red spider , in fact , the only one of any consequence . Feeding records on the larva of this ...
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Common terms and phrases
abundant adults Agricultural Experiment Station animals antennæ appears apple Arizona Association attack beetle blood breeding brown-tail bulletin Bureau of Entomology C. L. Marlatt California caterpillars cent Chosica citrus codling moth committee coöperation cotton deposited disease districts economic entomology eggs enemies engorged Federal Horticultural Board feeding female fever field flies food plants forest fruit fly gipsy moth habits Horticultural host humidity hyperparasites important infested injury inspector investigations July known large number larva larvæ Mediterranean fruit fly Microterys monkeys mosquitoes Nitzsch nursery stock nurserymen nymphs observed occur officers orchard oviposition ovipositor paper parasites Pellagra Piura poliomyelitis Porto Rico Postmaster present PRESIDENT W. D. HUNTER probably Prof pupa pupation region season seconds soft scale species specimens spiders spraying stable fly stage Stomoxys straw sugar cane summer temperature ticks tion trees U. S. Bureau unsprayed verruga weevil winter writer
Popular passages
Page 138 - Nursery stock, including all field-grown florists' stock, trees, shrubs, vines, cuttings, grafts, scions, buds, fruit pits and other seeds of fruit and ornamental trees or shrubs, and other plants and plant products for propagation, except field, vegetable, and flower seeds, bedding plants and other herbaceous plants, bulbs, and roots...
Page 501 - If you inquire at your home station, you can ascertain whether certificates and through tickets can be obtained to place of meeting. If not obtainable at your home station, the agent will inform you at what station they can be obtained. You can in such case purchase a local ticket thence, and there purchase through ticket and secure certificate to place of meeting.
Page 501 - If you arrive at the meeting and leave for home again prior to the Special Agent's arrival, or if you arrive at the meeting later than...
Page 138 - ... buds, fruit pits, and other seeds of fruit and ornamental trees or shrubs, and other plants and plant products for propagation (except field, vegetable, and flower seeds) , bedding plants, and other herbaceous plants, bulbs, and roots, may be admitted to the mails only when accompanied...
Page 501 - Be sure that, when purchasing your going ticket, you request a CERTIFICATE. Do not make the mistake of asking for a "receipt.
Page 138 - ... be admitted to the mails only when accompanied with a certificate from a State or Government inspector to the effect that the nursery or premises from which such...
Page 156 - ... of vital activities then obtaining. Conclusions. The use of oils or oil preparations on dormant trees has been followed in several cases by severe injury. Trees, as living organisms, respond to climatic and cultural conditions and as a consequence their power of resisting penetration and injury by oils undoubtedly varies with the season and probably from year to year. Since certain weather conditions promote injury by oils, it appears impossible to be sure that deleterious effects may not follow...
Page 107 - ... virulent form, resulting in death, the other 3 with transient tremblings, partial paralysis, diarrhoea and recovery. It is interesting to note that several of the monkeys had diarrhoea, therein the disease resembles the human disease more closely than when monkeys are simply inoculated with the virus into the brain, for gastro-intestinal upsets in children are frequently associated with infantile paralysis. In these experiments it is important, we think, to use the proper technic in order to...
Page 254 - I do not know that I can add very much to what has already been said with reference to this summer school.
Page 19 - Association by transmitting proper credentials to the Secretary, and by authorizing him to sign their names to this constitution. Other persons engaged in practical work in economic entomology may be elected by a two-thirds vote of the members present at...