Zobrazeno 1 - 10
of 238
pro vyhledávání: '"T. L. Ladd"'
Publikováno v:
American Potato Journal. 69:693-703
Solanum tuberosum L. Gp. Tuberosum populations that had been improved for resistance to potato leafhopper,Empoasca fabae (Harris), by recurrent selection, were analyzed for tuber contents of the glycoalkaloids α-solanine and α-chaconine. The mean c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f2026fd06f9187f262e98b0a6581f112
https://doi.org/10.1007/bf02853813
https://doi.org/10.1007/bf02853813
Sample Sizes and Distributions of Japanese Beetles (Coleoptera: Scarabaeidae) Captured in Lure Traps
Publikováno v:
Journal of Economic Entomology. 85:1797-1801
Sampling statistics were determined for Japanese beetles, Popillia japonica Newman, caught in traps baited with a 3:7:3 mixture of phenethyl propionate/eugenol/geraniol, or with ( R, Z )-5-(1-decenyl)dihydro-2(3 H )-furanone (Japonilure), or with a c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2e4232c6ba99c90de243f9cc255a732b
https://doi.org/10.1093/jee/85.5.1797
https://doi.org/10.1093/jee/85.5.1797
Autor:
T. L. Ladd, Lind L. Sanford
Publikováno v:
American Potato Journal. 69:391-400
Intercross and backcross populations derived from aSolanum tuberosum L. (2n = 2x = 48) ×Solanum chacoense Bitt. (2n = 2x = 48) cross by selecting for resistance to potato leafhopper (PLH) (Empoasca fabae Harris), were tested in the field. In F2 and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cedbefeb24cf0b9889806888bdf42e7b
https://doi.org/10.1007/bf02877490
https://doi.org/10.1007/bf02877490
Publikováno v:
Journal of Economic Entomology. 83:1298-1305
Twenty-nine of 69 candidate lures were attractive to one or both scarabaeid subfamilies, Cetoniinae and Rutelinae, found in South Africa. Cinnamyl alcohol, 3-phenyl-2-propen-l-ol, was found to be highly attractive to both these pestiferous beetle sub
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9c05bbabbe3e87703e96485b72b13d07
https://doi.org/10.1093/jee/83.4.1298
https://doi.org/10.1093/jee/83.4.1298
Autor:
T. L. Ladd, T. P. McGovern
Publikováno v:
Journal of Economic Entomology. 83:1316-1320
Attractant studies with the northern corn rootworm, Diabrotica barberi Smith & Lawrence, showed it to be strongly attracted to four monosubstituted phenols. The structures of three of the attractive phenols differ from the structures of three highly
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6b25d02b27d2d2bfa1609438e78ef339
https://doi.org/10.1093/jee/83.4.1316
https://doi.org/10.1093/jee/83.4.1316
Publikováno v:
Journal of Economic Entomology. 71:789-792
Two experimental intermittent sprayers, one air-operated and the other electrically-operated, were compared with a continuous sprayer for the control of the cabbage looper, Trichoplusia ni (Hubner), and the imported cabbage worm, Pieris rapae (L.), i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a4563c0250caeafddb130b463af98aba
https://doi.org/10.1093/jee/71.5.789
https://doi.org/10.1093/jee/71.5.789
Autor:
T. L. Ladd, Lind L. Sanford
Publikováno v:
American Potato Journal. 60:653-659
A comparison was made of two breeding procedures for recurrently selecting potato,Solanum tuberosum L., for resistance to infestation by potato leafhopper,Empoasca fabae (Harris). On the basis of selection advance per year, the more efficient procedu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9d45056a5f733d6e20344f9017950ef8
https://doi.org/10.1007/bf02852836
https://doi.org/10.1007/bf02852836
Autor:
T. L. Ladd, T. P. McGovern
Publikováno v:
Journal of Economic Entomology. 81:826-829
Selected 2-methoxyphenols,1,2-dimethoxybenzenes, and 1,3-benzodioxoles were tested in the field as attractants for the northern corn root worm (NCR), Diabrotica barberi Smith & Lawrence, in comparison with eugenol (4-allyl-2-methoxyphenol), isoeugeno
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::06198563638060c0ba57ec19dea6416e
https://doi.org/10.1093/jee/81.3.826
https://doi.org/10.1093/jee/81.3.826
Publikováno v:
Bulletin of the Entomological Society of America. 22:305-310
Several events have sparked interest in milky disease bacteria (Bacillus popilliae Dutky and Bacillus lentimorbus Dutky) in the past year: (1) The application submitted by the USDA to the Environmental Protection Agency requesting exemption from the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::87eba732912bd9dfcb45fe5415d03d50
https://doi.org/10.1093/besa/22.3.305
https://doi.org/10.1093/besa/22.3.305
Autor:
T. L. Ladd, C. R. Buriff
Publikováno v:
Journal of Economic Entomology. 72:311-314
Third-stage larvae of Popillia japonica Newman at densities equivalent to 54–861/m were allowed to feed for 4–7 wk in established bluegrass turf in 15cm diam pots maintained at Soil moisture levels of 60 and 90% of field capacity. At the highest
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c1b99bdb5db172a6dd9c5cd5af23d52f
https://doi.org/10.1093/jee/72.3.311
https://doi.org/10.1093/jee/72.3.311