Control of Live Oak in South Texas

This paper focuses on the association between concentrations of iron disulfide [Formula: see text] minerals in the shallow subsurface and underlying hydrocarbon accumulations. Such [Formula: see text] concentrations are the result of migration of either [Formula: see text] or organic constituents from the underlying hydrocarbons. The [Formula: see text] from reservoirs is produced inorganically from sulfate in the reservoir rocks at high temperature (>90°C) and migrates to shallower beds to react inorganically with iron to form [Formula: see text]. Organic constituents from reservoirs, in contrast, provide nourishment for sulfate reducing bacteria in shallow relatively cool (<90°C) beds. Sandstone in the Ray Point uranium district in Live Oak County, Texas contains abundant [Formula: see text] which formed both from deep‐seated [Formula: see text] and from [Formula: see text] produced in the shallow subsurface by bacteria that utilized organic materials from depth. Deep petroleum reservoirs were physically connected to near‐surface (<100 m) beds containing epigenetic [Formula: see text] by the Oakville fault. Epigenetic iron sulfide formation occurred in at least four episodes over at least five million years. Evidence from the Ray Point district and elsewhere in Texas illustrates that sulfidization reactions have destroyed magnetic iron‐titanium oxide minerals in the vicinity of major growth faults, resulting in a systematic decrease in magnetic susceptibility and magnitude of remanent magnetization in the vicinity of such faults. Growth faults which tap hydrocarbon deposits may be detectable using aeromagnetic methods.

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Granular Herbicides for Woody Plant Control

Weed Science ◽

10.1017/s004317450005476x ◽

1969 ◽

Vol 17 (4) ◽

pp. 538-541 ◽

Cited By ~ 12

Author(s):

R. W. Bovey ◽

H. L. Morton ◽

J. R. Baur ◽

J. D. Diaz-Colon ◽

C. C. Dowler ◽

...

Keyword(s):

Puerto Rico ◽

Woody Plants ◽

Woody Plant ◽

Prosopis Juliflora ◽

South Texas ◽

Acacia Farnesiana ◽

Quercus Virginiana ◽

Live Oak ◽

Ilex Vomitoria ◽

Plant Control

Granular 4-amino-3,5,6-trichloropicolinic acid (picloram) was effective in controlling live oak(Quercus virginiana(Mill.), huisache)(Acacia farnesiana(L.), Willd.), and yaupon(Ilex vomitoriaAit.), but not honey mesquite(Prosopis juliflora(Swartz) DC. var.glandulosa(Torr.) Cockerell) in south Texas. Granular 5-bromo-3-sec-butyl-6-methyluracil (bromacil) controlled live oak and huisache. Herbicides applied to soil were usually most effective in spring and fall during periods of active brush growth. Picloram granules applied in May to a mixed stand of woody plants in Puerto Rico usually were effective. However, rates up to 30 lb/A were ineffective on some species.

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Electric-log sections from uranium areas in the South Texas coastal plain, Atascosa, Bee, Duval, Karnes, Live Oak, and McMullen counties, Texas

Open-File Report ◽

10.3133/ofr75122 ◽

1975 ◽

Author(s):

Dolan H. Eargle ◽

Beth O. Davis

Keyword(s):

Coastal Plain ◽

South Texas ◽

The South ◽

Live Oak

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Birch-naïve, oak-allergic subjects’ response to birch pollen in an environmental chamber

10.22541/au.162486024.40859547/v1 ◽

2021 ◽

Author(s):

Robert M. Ramirez ◽

Robert Jacobs ◽

Charles P Andrews

Keyword(s):

Birch Pollen ◽

Allergen Challenge ◽

Cross Reactivity ◽

South Texas ◽

Blood Draw ◽

Natural Exposure ◽

Live Oak ◽

Oak Pollen ◽

Endemic Areas ◽

Robust Response

BACKGROUND: Oak and birch pollens are known to have strong cross-reactivity. It is unknown how robust this cross-reactivity is in subjects without natural exposure to pollen of both trees. We aimed to assess in an Allergen Challenge Chamber (ACC), the symptomatic responsiveness to birch pollen in subjects allergic to and naturally exposed to Virginia Live Oak (VLO) pollen and SPT-sensitive but not naturally exposed to birch pollen. METHODS: Subjects underwent SPT and blood draw for ssIgE to oak and birch antigens. Residential historical data were obtained. Subjects were exposed to birch pollen (3,500 ±700 gr/m ) in 2 consecutive 3-hour challenges. Symptoms were recorded at baseline and 30-minute intervals. RESULTS: Twenty-four subjects, 12 males, age 20-58 yrs, completed the study. Sixteen subjects (66.7%) responded with high total symptom scores (TSS) ≥10 of max 21. Twelve subjects (50%) had ssIgE ≥0.70 kU/L to oak. Subjects with a Class II ssIgE to oak pollen had a significantly higher max TSS than those without. Fifteen subjects without natural exposure to birch pollen responded with TSS equivalent to 9 with previous natural exposure. Those without natural birch exposure also responded similarly to subjects in birch endemic areas reported in the literature. CONCLUSION: Subjects allergic to oak pollen residing in South Texas, responded to birch pollen in an ACC with symptoms comparable to both those with previous exposure and also those residing in endemic areas and reported by other researchers. This robust response of cross-reactivity in oak-allergic subjects, without prior endemic exposure, suggests that a cross-reactive intervention could be efficacious.

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Live Oak Delta Complex--Unstable, Shelf-Edge Delta in Deep Wilcox Trend of South Texas: ABSTRACT

AAPG Bulletin ◽

10.1306/2f919602-16ce-11d7-8645000102c1865d ◽

1980 ◽

Vol 64 ◽

Author(s):

Marc B. Edwards

Keyword(s):

South Texas ◽

Shelf Edge ◽

Live Oak

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Control of Live Oak by Herbicides Applied at Various Rates and Dates

Weed Science ◽

10.1017/s0043174500054278 ◽

1969 ◽

Vol 17 (3) ◽

pp. 373-376 ◽

Cited By ~ 9

Author(s):

R. W. Bovey ◽

H. L. Morton ◽

J. R. Baur

Keyword(s):

Acetic Acid ◽

South Texas ◽

Effective Control ◽

Herbaceous Vegetation ◽

Quercus Virginiana ◽

Live Oak ◽

Phenoxy Herbicides ◽

Dichlorophenoxy Acetic Acid

Herbicides 4-amino-3,5,6-trichloropicolinic acid (picloram) and 5-bromo-3-sec-butyl-6-methyluracil (bromacil) effectively controlled live oak (Quercus virginianaMill.) when applied in the spring and fall in south Texas. A mixture of picloram plus (2,4,5-trichlorophenoxy)acetic acid (2,4,5-T) also was effective. Higher rates of bromacil were required than for picloram or picloram plus 2,4,5-T for effective control. Bromacil was more injurious to herbaceous vegetation. The phenoxy herbicides (2,4-dichlorophenoxy)acetic acid (2,4-D) and 2,4,5-T were ineffective.

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