Ortman, Eldon E. | Purdue Entomology Centennial Website

Ortman, E.E., et al., A Chalcid parasitizing spotted alfalfa aphids and greenbugs in Kansas. Journal of Economic Entomology, 1959. 52(3): p. 537-538.

Ortman, E.E. and R.H. Painter, Quantitative measurements of damage by the greenbug, Toxoptera graminum, to four wheat varieties. Journal of Economic Entomology, 1960. 53(5): p. 798-802.

Ortman, E.E., et al., Selection and evaluation of pea aphid-resistant alfalfa plants. Journal of Economic Entomology, 1960. 53(5): p. 881-887.

Ortman, E.E., et al., Selection and evaluation of pea aphid – resistant alfalfa plants. Journal of Economic Entomology, 1960. 56: p. 881-87.

Ortman, E.E., et al., Cody alfalfa. Kansas Agricultural Experiment Station, 1961(381): p. 10.

Ortman, E.E., et al., Reactions of alfalfa varieties to pea aphids in the field and greenhouse. Crop Science, 1963. 3: p. 298-301.

Ortman, E.E., E.L. Sorensen, and A. Isaak, Influence of temperature and humidity on resistance in alfalfa to the spotted alfalfa aphid and pea aphid. Journal of Economic Entomology, 1963. 56: p. 53-57.

Ortman, E.E. and P.J. Fitzgerald. Breeding for resistance to western corn rootworm. in Proceedings of the Nineteenth Annual Hybrid Corn Industry Research Conference. 1964. Chicago, Illinois.

Ortman, E.E. and P.J. Fitzgerald. Developments in corn rootworm research. in Proceedings of the Nineteenth Annual Hybrid Corn Industry Research Conference. 1964. Chicago, Illinois.

Ortman, E.E., et al., SD10 inbred corn for hybrids with resistance to corn rootworm. South Dakota Farm and Home Research, 1965. 16(1): p. 4 ; 6.

Ortman, E.E. and B.W. George, Rearing the western com root-worm in the laboratory. Journal of Economic Entomology, 1965. 58(2): p. 375-377.

Ortman, E.E. and T.F. Branson, Host range of larvae of the northern corn rootworm (Coleoptera : Chrysomelidae). Journal of the Kansas Entomological Society, 1967. 40(3): p. 412-414.

Ortman, E.E. and T.F. Branson, Biology of laboratory-reared corn leaf aphids, Rhopalosiphum maidis (Homoptera: Aphididae). Annals of the Entomological Society of America, 1967. 60(5): p. 1118-1119.

Ortman, E.E. and T.F. Branson, Fertility of western corn rootworm reared as larvae on alternate hosts. Journal of Economic Entomology, 1967. 60(2): p. 595 p.

Ortman, E.E. and T.F. Branson, Host range of larvae of the western corn rootworm. Journal of Economic Entomology, 1967. 60(1): p. 201-203.

Ortman, E.E., P.J. Fitzgerald, and T.F. Branson, Evaluation of mechanical damage to roots of commercial varieties of corn (Zea mays L.). Crop Science, 1968. 8(4): p. 419-21.

Ortman, E.E. and E.D. Gerloff, Physiological studies on greenbug infested barley, in Agron Abst Madison. 1968.

Ortman, E.E., D.C. Peters, and P.J. Fitzgerald, Vertical-pull technique for evaluating tolerance of corn root systems to northern and western corn rootworms. Journal of Economic Entomology, 1968. 61: p. 373-75.

Ortman, E.E., D.C. Peters, and P.J. Fitzgerald, Vertical-pull technique for evaluating tolerance of corn root systems to northern and western corn root-worms. Journal of Economic Entomology, 1968. 61(2): p. 373-375.

Ortman, E.E. and T.F. Branson, Feeding behavior of larvae of the western corn rootworm[Diabrotica virgifera Lec.]: normal larvae and larvae maxillectomized with laser radiation. Annals of the Entomological Society of America, 1969. 62(4): p. 808-812.

Ortman, E.E., P.L. Guss, and T.F. Branson, Toxicity of sorghum roots to larvae of the western corn rootworm. Journal of Economic Entomology, 1969. 62: p. 1375-1378.

Ortman, E.E. and T.F. Branson, The host range of larvae of the western com robtworm: further studies. Journal of Economic Entomology, 1970. 63(3): p. 800-803.

Ortman, E.E. and T.F. Branson, Host range of larvae of the northern corn rootworm: further studies. Journal of the Kansas Entomological Society, 1971. 44(1): p. 50-52.

Ortman, E.E. and E.D. Gerloff, Physiological Changes in Barley-M Induced by Greenbug Feeding Stress. Crop Science, 1971.

Ortman, E.E. Techniques, accomplishments, and future potential of host plant resistance to Diabrotica. in Proceedings of the Summer Institute on Biological Control of Plant Insects. 1974.

Ortman, E.E., et al., A bibliography of the northern corn rootworm, Diabrotica longicornis (Say), and the western corn rootworm, Diabrotica virgifera LeConte (Coleoptera: Chrysomelidae). Biological Notes, Natural History Survey Division, State of Illinois, 1974(90): p. 15.

Ortman, E.E. and T.F. Branson, Growth pouches for studies of host plant resistance to larvae of corn rootworms. Journal of Economic Entomology, 1976. 69(3): p. 380-382.

Ortman, E.E. and M.J. Sinsko, Mosquito nuisance and disease carrier. Purdue University Cooperative Extension Service, 1985. E(204).

Ortman, E.E., et al., Transgenic insecticidal corn: the agronomic and ecological rationale for its use. BioScience, 2001. 51(11): p. 900.

Coble, H.D. and E.E. Ortman, The USA National IPM road map. 2009.