Browsing by Subject "Biological control"
Now showing items 1-17 of 17
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(Texas A&M University. Libraries, 1982)Studies of citrus blackfly (CBF), Aleurocanthus woglumi Ashby, in the Lower Rio Grande Valley of Texas (1977-82) indicated a widespread current distribution of the exotic parasite Encarsia opulenta Silvestri, established ...
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(Texas A&M University. Libraries, 1985)Field studies were conducted on the Banks grass mite (BGM), Oligonychus pratensis (Banks), infesting commercial field corn in the Texas High Plains. The population dynamics and spatial distribution of BGM and its associated ...
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Biology and distribution of staphylinid beetles associated with bovine feces in south central Texas (Texas A&M University. Libraries, 1985)The staphylinid fauna of a south central Texas pasture was identified. Species composition were compared in two habitats; open and wooded pasture. Over 27,000 specimens of Staphylinidae were captured during a field study ...
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(2009-05-15)Solenopsis invicta, the red imported fire ant, has recently become associated with Antonina graminis, an invasive pest, and Neodusmetia sangwani, biological control agent, and maybe negatively affecting established biological ...
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(Texas A&M University. Libraries, 1984)The efficacy of greenbug, Schizaphis graminum (Rondani), natural enemies was determined in grain sorghum using mechanical exclusion techniques and paired comparison experimental approaches. Indirect methods of evaluation ...
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(Texas A&M University. Libraries, 1990)Studies conducted from 1986 through 1988 on the millet stalk borer (MSB), Haimbachia ignefusalis (Lepidoptera: Pyralidae) included investigations on its host plants, natural enemies, oviposition behavior, effects on crop ...
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(Texas A&M University. Libraries, 1976)Larvae of Aedes aegypti (L) were exposed to various compounds having fluorescent properties to determine if these compounds would elicit growth regulating effects in mosquitoes. One compound, DNSAB or 5 [[[5-(Dimethylami ...
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(Texas A&M University. Libraries, 1981)A composite economic threshold was developed for use in management of lepidopterous cabbage pests. Major emphasis was on the cabbage looper, Trichoplusia ni (Hubner), diamondback moth, Plutella xylostella (L.), and imported ...
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(Texas A&M University. Libraries, 1986)Predation rates of Heliothis zea (Boddie) (Lepidoptera: Noctuidae) eggs located on cotton plants were determined by placing ³²P labelled H. Zea eggs on different plant structures throughout the plants. Egg predation averaged ...
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(Texas A&M University. Libraries, 1988)Four plant allelochemicals, gossypol, nicotine, tomatine and solanine, were tested for their effect on the host-parasitoid system of Heliothis virescens-Campoletis sonorensis. In this study, the common effects seen with ...
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(Texas A&M University. Libraries, 1986)The spatial distribution of Liriomyza trifolii (Burgess) and its associated hymenopterous parasite complex was determined in field grown bell peppers at Weslaco, TX. L. trifolii larvae were most numerous during the first ...
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(Texas A&M University. Libraries, 1986)Field studies were conducted at College Station, Texas in 1984-1986 to examine the population biology of the yellow pecan aphid complex. Populations of blackmargined aphids (M. caryella) were highly variable among pecan ...
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(Texas A&M University. Libraries, 1991)Selective media were developed for the isolation of Gliocladium virens (GVSM) and G. roseum (GRSM) from nonsterile soil. Gliotoxin and acriflavin were key ingredients in the selective media for G. virens and G. roseum, ...
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(Texas A&M University. Libraries, 1985)Field, greenhouse and laboratory studies were conducted to determine the effect of cotton trichome density on parasitism and predation of Heliothis zea (Boddie) eggs. In a no-choice field test of three cotton phenotypes ...
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(Texas A&M University. Libraries, 1985)Third-instar house fly larvae and both sexes of Macrocheles muscaedomesticae exhibit an aggregated spatial dispersion in poultry manure. Populations of both species were sampled by random quadrats of three sizes at a narrow, ...
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(Texas A&M University. Libraries, 1990)Weed control by triploid grass carp (Ctenopharyngodon idella Val.) in waterlily (Nymphaea cultivars) production ponds was investigated and simulated. The 4 x 2 factorial experiment involved eight duplicated treatments ...
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(Texas A&M University. Libraries, 1986)Surveys for parasitoids of cotton fleahopper (CFH) Pseudatomoscelis seriatus (Reuter), were conducted on three wild host plants; Monarda punctata L., Croton capitatus Michx., and Oenothera speciosa Nutt. There were no ...