Browsing by Subject "Diseases and pests"
Now showing items 1-20 of 55
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(Texas A&M University. Libraries, 1983)Aflatoxin development in corn prior to harvest can be a serious problem and it represents a production hazard that can have a significant monetary impact on corn producers. In 1980, silk-mediated kernel infection resulted ...
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(Texas A&M University. Libraries, 1986)Maize dwarf mosaic virus (MDMV) is one of the Potyviruses whose strain relationships have not been clearly defined. Many of the characteristics which have been traditionally used in the strain definitions are now known to ...
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(Texas A&M University. Libraries, 1980)During a 4-year period, plant resistance in sorghum to Contarinia sorghicola was studied. Experiments were conducted (1) to determine the relative level of resistance to the sorghum midge possessed by selected lines ...
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(Texas A&M University. Libraries, 1984)Dicyma pulvinata is a mycoparasite of the late leafspot pathogen Cercosporidium personatum. Parasitization of cells and spores of Cercosporidium was demonstrated in both dew-deposition chamber and field experiments. In ...
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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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(Texas A&M University. Libraries, 1986)
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(Texas A&M University. Libraries, 1985)Two unrelated viruses, Watermelon Mosaic Virus-1 (WMV-1) and Watermelon Mosaic Virus-2 (WMV-2), cause the major virus diseases of cucurbits in Texas. WMV-1, with a host range restricted to cucurbits, was reported in Texas ...
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(Texas A&M University. Libraries, 1986)Sorghum grain lots with various levels of resistance to sorghum grain mold (SGM) were evaluated for several loss parameters: kernel weight, kernel density, electrolyte leachate level, percentage germination, vigor, and ...
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(Texas A&M University. Libraries, 1987)Potato leafroll virus (PLRV) was aphid-transmitted from potato (Solanum tuberosum cultivar Russet Burbank) to ground cherry (Physalis floridana), where it was maintained by serial aphid transmission. Serological and plant ...
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(Texas A&M University. Libraries, 1979)Percent infection and gain per cycle of selection were compared after two cycles of mass selection with progeny test, mass selection without progeny test and S1 selection in breeding for resistance to sorghum downy mildew ...
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(Texas A&M University. Libraries, 1992)Electron microscopy of SYBV showed icosohedral particles with maximum and minimum diameters of approximately 28 nm and 27 nm. The two isolates are statistically the same population at a probability greater than 95%. ...
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(Texas A&M University. Libraries, 1981)Five species of panicle--feeding bugs were found in commercial sorghum in southeast central Texas: Rice stink bug (Oebalus pugnax F.), southern green stink bug (Nezara viridu la L.), leaffooted bug (Leptoglossus phyllopus ...
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(Texas A&M University. Libraries, 1988)Updating of the treatment recommendations used by Texas rice producers' for the management of the rice stink bug (RSB) is the objective of this study. Present treatment recommendations used in Texas and throughout the ...
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(Texas A&M University. Libraries, 1977)A series of laboratory, greenhouse and field studies were conducted to assess the feasibility of using Chrysopa carnea Stephens for controlling populations of the bollworm, Heliothis zea (Boddie), and the tobacco budworm, ...
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(Texas A&M University. Libraries, 1991)The effect of triazole fungicides on Phymatotrichum omnivorum (PO), grapevines and the interaction between grape rootstocks and PO were studied to have a better understanding of the control alternatives of PO in vineyards. ...
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(Texas A&M University. Libraries, 1993)Successful decisions largely depend on correct interpretation of data. Today, our ability to collect and present data outstrips our ability to interpret it. This situation has been called "information input overload" (Miller ...
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(Texas A&M University. Libraries, 1987)Cotton stand establishment and the seed-seedling disease complex are influenced by several factors. Studies were conducted at three phases to determine the effect of seed quality, isolate and inoculum density of Pythium ...
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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, 1980)Seventy-seven genotypes of buffelgrass were screened for resistance to the spittlebug complex A. albofasciata (Lallemand) and. P. simulans (Walker) in Apodaca, N. L. Screening involved artificially infesting plants in caged ...
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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 ...