Publication year rev: 8022-1978 / Subject: Helicoverpa zea

Author:: E. B. Lillehoj; D. I. Fennell; W. F. Kwolek; G. L. Adams; M. S. Zuber; E. S. Horner; N. W. Widstrom; H. Warren; W. D. Guthrie; D. B. Sauer; W. R. Findley; A. Manwiller; L. M. Josephson; A. J. Bockholt
Source:: Crop science 1978 v.18 no.6 pp. 921-924
ISSN:: 0011-183X
Subject:: Zea mays; corn; crop damage; insect pests; plant pests; Ostrinia nubilalis; Spodoptera frugiperda; larvae; Aspergillus flavus; microbial contamination; aflatoxins; fungal diseases of plants; seeds; corn ears; geographical variation; Helicoverpa zea; United States
Abstract:: ... The study examined the relationship of Aspergillus flavus Link ex Fr. in insects collected from developing ears and aflatoxin contamination of the kernels of corn (Zea mays L.). In 1976 two hybrids adapted for growth in the South and two hybrids adapted to the Corn Belt were grown at 11 diverse locations in the USA. Planting and harvest dates were staggered to examine maturity factors. Of 1621 ins ...
Handle:: 10113/26137
DOI:: 10.2135/cropsci1978.0011183X001800060002x
: https://doi.org/10.2135/cropsci1978.0011183X001800060002x

Author:: CHAN, B.G.; WAISS, A.C. JR.; BINDER, R.G.; ELLIGER, C.A.
Source:: Entomologia experimentalis et applicata 1978 v.24 no.3 pp. 294-300
ISSN:: 0013-8703
Subject:: Helicoverpa zea; Heliothis virescens; Pectinophora gossypiella; aldehydes; allelochemicals; artificial diets; cotton; cyclopropenoid fatty acids; flavonoids; growth retardation; host plants; insects; larvae; larval development; leaves; proanthocyanidins
Abstract:: ... Four classes of cotton constituents -- condensed tannins, flavonoids, terpene aldehydes and cyclopropenoid fatty acids -- were isolated from leaves and parts of squares and fed to Lepidopterous larvae in an artificial diet. The ED₅₀ required for growth inhibition of Heliothis virescens, H. zea and Pectinophora gossypiella larvae ranged from 0.1 per cent to 0.7 per cent of the weight of the diet. T ...
DOI:: 10.1111/j.1570-7458.1978.tb02785.x
: https://doi.org/10.1111/j.1570-7458.1978.tb02785.x

Author:: Fennell, D.I.; Lillehoj, E.B.; Kwolek, W.F.; Guthrie, W.D.; Sheeley, R.; Sparks, A.N.; Widstrom, N.W.; Adams, G.L.
Source:: Journal of economic entomology 1978 v.71 no.4 pp. 624-628
ISSN:: 0022-0493
Subject:: Helicoverpa zea; Ostrinia nubilalis; larvae; Zea mays; corn ears; crop damage; seeds; microbial contamination; Aspergillus flavus; fungal spores; aflatoxins; planting date; maturity stage; Georgia; Iowa; Missouri
Abstract:: ... Insect larvae that feed on developing corn kernels are implicated in establishment of Aspergillus flavus Link ex Fr. infection and subsequent contamination of the seed with aflatoxin before harvest. The effect of environment on the association between A. flavus and 2 corn insects was examined on corn grown at diverse locations. Corn ears at Tifton, Georgia, Ankeny, Iowa and Portageville, Missouri ...
Handle:: 10113/24172
DOI:: 10.1093/jee/71.4.624
: https://doi.org/10.1093/jee/71.4.624

Author:: Tingle, F.C.; Mitchell, E.R.; Baumhover, A.H.
Source:: Journal of chemical ecology 1978 v.4 no.4 pp. 471-479
ISSN:: 0098-0331
Subject:: Heliothis subflexa; Heliothis virescens; Helicoverpa zea; sex pheromones; sex attractants; trapping; pheromone traps; backcrossing; hybrids; mating behavior; olfactometry; wind tunnels; nocturnal activity
Abstract:: ... Electric grid traps baited with Heliothis subflexa (Guenée), H. virescens (F.), or H. zea (Boddie) females captured conspecific males with few exceptions.Heliothis subflexa females reduced the attraction ofH. virescens and H. zea males when used as bait simultaneously with females of either of these two species. Backcrosses were made with H. virescens males and female hybrids from a cross between ...
Handle:: 10113/23301
DOI:: 10.1007/BF00989503
: https://doi.org/10.1007/BF00989503

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