Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Ken Y. Arakawa"'
Publikováno v:
California Agriculture, Vol 44, Iss 1, Pp 4-6 (1990)
Ash whitefly has spread over a large portion of California since the initial infestation was discovered in Los Angeles County in 1988. Populations have grown to high densities on a wide range of host plants, including ash, pear, apple, citrus, and
Externí odkaz:
https://doaj.org/article/8a16e9e535bd428c820c18912b24c35d
Autor:
Ken Y. Arakawa, Paula M. Leddy, Timothy D. Paine, Thomas S. Bellows, John N. Kabashima, Carol Meisenbacher
Publikováno v:
California Agriculture, Vol 44, Iss 1, Pp 4-6 (1990)
Ash whitefly has spread over a large portion of California since the initial infestation was discovered in Los Angeles County in 1988. Populations have grown to high densities on a wide range of host plants, including ash, pear, apple, citrus, and ot
Publikováno v:
Environmental Entomology. 13:95-99
The incidence of Erynia phytonomi (Arthur) and Beauveria bassiana (Balsamo) in southern-California populations of the Egyptian alfalfa weevil, Hypera brunneipennis (Boheman) (Coleoptera: Curculionidae) was determined during 1979 and 1980. E. phytonom
Autor:
Ken Y. Arakawa, Howard T. Dulmage, Paul G. Fast, I. M. Hall, Janina Krywienczyk, Clayton C. Beegle
Publikováno v:
Journal of Invertebrate Pathology. 37:62-65
Autor:
Thomas S. Bellows, Ken Y. Arakawa
Publikováno v:
Journal of Economic Entomology. 79:1235-1239
Transient vectors (those that do not reproduce on the disease-affected crop) can cause difficulties in assessing potential crop losses to disease. A probability model is presented that relates density of transient vectors (over time) to disease incid
Publikováno v:
Environmental Entomology. 17:225-228
Patterns of daily flight of the sweet potato whitefly, Bemisia tabaci (Gennadius), were investigated in three cropping systems (cotton, watermelon, and cantaloupe) in California's Imperial Valley. Flying adults were monitored either by yellow sticky
Autor:
Thomas S. Bellows, Ken Y. Arakawa
Publikováno v:
Environmental Entomology. 17:483-487
Immature populations of sweetpotato whitefly, Bemisia tabaci (Gennadius), were sampled in cotton fields in southern California; three fields were sampled in 1982; five fields were sampled in 1983. Population densities varied from 0 to 20 nymphs per m
Publikováno v:
Journal of Economic Entomology. 54:141-146
A number of chemical insecticides and some formulations of commercially produced microbial preparations containing Bacillus thuringiensis var. thuringiensis Berliner were applied as spays and/or dusts to cabbage, cauliflower, and bead lettuce for con
Publikováno v:
Journal of Invertebrate Pathology. 18:359-362
Laboratory tests and a greenhouse study were conducted to determine the response of the citrus red mite to the β-exotoxin fraction of Bacillus thuringiensis . The results showed that the fraction produced high mortality in adult mites. Eggs and imma
Publikováno v:
Journal of Economic Entomology. 63:415-421
Effectiveness of a nuclear polyhedrosis virus and Bacillus thuringiensis Berliner for control of the corn earworm, Heliothis zea (Boddie), was investigated on successive sweet corn plantings in southern California in 1965, 1966 and 1967. Effectivenes