Zobrazeno 1 - 10
of 16
pro vyhledávání: '"E. W. Dunnam"'
Autor:
E. W. Dunnam
Publikováno v:
Journal of Economic Entomology. 22:750-756
Data collected during 1928 at Tallulah, La., following the floods of 1927 with attendant restriction of cotton culture, tend to show that there is no relation between the distribution of the boll weevil infestation in 1928 and the location of the cot
Publikováno v:
Journal of Economic Entomology. 36:896-900
Autor:
E. W. Dunnam
Publikováno v:
Journal of Economic Entomology. 19:589-593
This paper gives evidence that as the cotton bolls grow older they are less suceptible to boll weevil, Anthonomus grandis , injury, and the immunity at given ages varies with the variety. Dixie Triumph, Webber 49 and Humco Cleveland were the varietie
Autor:
F. L. Thomas, E. W. Dunnam
Publikováno v:
Journal of Economic Entomology. 24:815-821
There has been no definite knowledge regarding the factors responsible for the occurrence of an infestation by the cotton boll worm ( Heliothis obsolete Fab.). Experimental evidence shows that the proximity of com to cotton has no relation to the inf
Autor:
F. A. Fenton, E. W. Dunnam
Publikováno v:
Journal of Economic Entomology. 20:327-336
From 1922 to 1926, an average of 3.27 per cent of cotton boll weevils survived the winter in various types of protective shelters at Florence, South Carolina. Practically all weevils issuing from hibernation before cotton was available as a food plan
Publikováno v:
Journal of Economic Entomology. 46:923-927
Autor:
S. L. Calhoun, E. W. Dunnam
Publikováno v:
Journal of Economic Entomology. 41:22-25
Autor:
J. C. Clark, E. W. Dunnam
Publikováno v:
Journal of Economic Entomology. 31:663-666
Autor:
E. W. Dunnam, S. L. Calhoun
Publikováno v:
Journal of Economic Entomology. 46:170-172