Zobrazeno 1 - 10
of 27
pro vyhledávání: '"W. H. Luckmann"'
Publikováno v:
Environmental Entomology. 8:191-195
Two concepts are presented concerning biology of Agrotis ipsilon (Hufnagel) on corn: (1) the black cutworm larvae that damage seedling corn in May and early June, originate from eggs oviposited in the field in the spring before the corn is planted; a
Publikováno v:
Annals of the Entomological Society of America. 73:207-215
A 2-yr study was initiated in 1975 in the North Central States of Illinois, Indiana, Minnesota, Nebraska and Ohio to evaluate the effect of planting date of field corn ( Zea mays L.) on beetle emergence and damage by the western, Diabrotica virgifera
Publikováno v:
Biochemical Genetics. 13:885-898
Allelic variation at the Est-II locus was investigated in 22 natural populations of Heliothis zea from maize, separated spatially and temporally. Of the four alleles observed, Est-II b was the predominant one in every population. The relative frequen
Publikováno v:
Journal of Economic Entomology. 77:1495-1499
A trap is described that uses cucurbitacins and carbaryl to capture and kill northern and western corn rootworm beetles ( Diahrotica barberi Smith and Lawrence and D. virgifera virgifera LeConte, respectively). The trap is consistent in numbers of be
Publikováno v:
Environmental Entomology. 8:117-122
Autographa precationis Guenee is occasionally observed feeding on soybean in east central Illinois. The life cycle under controlled environmental conditions was investigated and based on our results the species may have 2 complete generations during
Autor:
D. B. Broersma, W. H. Luckmann
Publikováno v:
Journal of Economic Entomology. 63:253-256
Studies were made to determine the effect of Lygus lineolaris (Palisot de Beauvois) feeding on buds, blossoms, and pods of soybean by confining adult insects to the fruiting structures of the soybean plant. Adult feeding for 24 hours caused some dele
Autor:
A. M. Rhodes, W. H. Luckmann
Publikováno v:
Journal of Economic Entomology. 60:527-530
Quantitative methods were developed for evaluating corn for corn leaf aphid, Rhopalosiphum maidis (Fitch), resistance. Aphids were confined in micro cages on the whorl leaves of 7-weeks-old corn inbreds grown in the greenhouse. Percentage of survival
Autor:
W. H. Luckmann, G. C. Decker
Publikováno v:
Journal of Economic Entomology. 45:226-232
Autor:
W. H. Luckmann, G. C. Decker
Publikováno v:
Journal of Economic Entomology. 53:821-827
Beginning in the spring of 1954 and continuing through 1958, dieldrin was applied by the Division of Plant Pest Control Agricultural Research Service, U. S. Department of Agriculture, and the Illinois Department of Agriculture for suppression of a lo
Publikováno v:
Journal of Economic Entomology. 60:737-741
Adults of the onion maggot, Hylemya antiqua (Mcigen), were sterilized and oviposition was reduced when apholate or hempa was added to their food in laboratory tests. Apholate was more effective than hempa at dosages of 0.1, 0.25, 0.5, and 1% of the d