Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Eldon E. Ortman"'
Autor:
Eldon E. Ortman, Randall A. Higgins, Lawrent L. Buschman, Richard L. Hellmich, Blair D. Siegfried, F. Tom Turpin, Marlin E. Rice, Billy W. Fuller, Dennis D. Calvin, Richard T. Roush, Kenneth R. Ostlie, Gary P. Munkvold, Thomas E. Hunt, John E. Foster, Galen P. Dively, B. Dean Barry, Anthony M. Shelton, Kevin L. Steffey, Phillip E. Sloderbeck, Mark K. Sears, Janet Carpenter, John L. Wedberg
Publikováno v:
BioScience. 51:900
Publikováno v:
Journal of Economic Entomology. 56:53-57
Survival and reproduction of the spotted alfalfa aphid, Therioaphis maculata (Buckton), were similar to those of the pea aphid, Macrosiphum pisi (Harris), at all combinations of three temperatures and three humidities in studies using three alfalfa c
Autor:
Terry F. Branson, Eldon E. Ortman
Publikováno v:
Journal of Economic Entomology. 63:800-803
A total of 44 species of grass, 12 species of broadleaf weeds, and 15 species of broadleaf crops were screened in the laboratory as possible hosts of the larvae of the western corn rootworm, Diabrotica virgifera LeConte. The larvae did not survive th
Publikováno v:
Journal of Economic Entomology. 62:1375-1378
The roots of sorghum, Sorghum vulgare Pers., were found to he toxic to the larvae of Diabrotica virgifera LeConte. Preliminary tests suggested that the toxin involved was hydrocyanic acid. Other experiments showed that free cyanide was toxic to the l
Publikováno v:
Journal of Economic Entomology. 53:881-887
Various selection criteria were effective in isolating pea aphid, Macrosiphum pisi (Harr.), resistant plants from susceptible alfalfa, Medicago satire L., populations and these selection criteria also appeared suitable for the evaluation of progeny f
Publikováno v:
Crop Science. 8:419-421
Autor:
Boyd W. Georce, Eldon E. Ortman
Publikováno v:
Journal of Economic Entomology. 58:375-377
In recent years the western corn rootworm, Diabrotica virgifera LeConte, has become a pest of increased economic importance in Nebraska and Kansas because of the failure of chlorinated hydrocarbon insecticides to control the species (Ball and Weekman
Autor:
Terry F. Branson, Eldon E. Ortman
Publikováno v:
Journal of Economic Entomology. 60:201-203
Larvae of the western corn rootworm, Diabrotica virgifera LeConte, survived for a minimum of 10 days on 9 of 22 species of grasses tested in the laboratory. Larvae developed into adults on Minter wheat, Triticum aestivum L., and green foxtail grass,
Publikováno v:
Journal of Economic Entomology. 52:537-538
Autor:
Eldon E. Ortman, Terry F. Branson
Publikováno v:
Annals of the Entomological Society of America. 60:1118-1119
The corn leaf aphid, Rhopalosiphum maidis (Fitch), was first described as Aphis maidis by Fitch (1856), who found it infesting corn. Since then, its life history has been studied and reported several times under uncontrolled conditions.