Results 171 to 180 of about 7,897 (203)

Pharmacokinetics of picloram in male volunteers

Toxicology and Applied Pharmacology, 1984
The fate of picloram (4-amino-3,5,6-trichloropicolinic acid), an active ingredient in TORDON brand herbicides, was defined in 6 healthy male volunteers following single po doses of 5.0 and 0.5 mg/kg, and a dermal dose of 2.0 mg/kg. Picloram was administered orally as the sodium salt in grape juice.
R J, Nolan, N L, Freshour, P E, Kastl, J H, Saunders   +3 more
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PHOTOLYSIS OF PICLORAM IN DILUTE AQUEOUS SOLUTION

Environmental Toxicology and Chemistry, 1989
Abstract The photolysis of [2,6-14C]pyridine-labeled picloram (4-amino-3,5,6-trichloro-2-pyridine carboxylic acid) was studied at 25°C in sterile, buffered water at pH 7 and in a natural water sample taken from a forest ecosystem. The first-order half-life for picloram photodegradation was the same in both systems, averaging 2.6 d at 25 ...
Kent B. Woodburn, Donald D. Fontaine, E. Lee Bjerke, George J. Kallos   +3 more
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Distribution of Root-Absorbed Picloram

Weed Science, 1969
We studied changes in the concentration of 4-amino-3,5,6-trichloropicolinic acid (picloram) with time in roots, stems, and leaves of 20-day-old seedlings of huisache (Acacia farnesiana (L.) Willd.) and honey mesquite (Prosopis juliflora (Swartz) DC. var. glandulosa (Torr.) Cockerell).
J. R. Baur, R. W. Bovey
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ChemInform Abstract: PICLORAM PHOTOLYTIC DECOMPOSITION

Chemischer Informationsdienst, 1974
AbstractPicloram (4‐Amino‐3,5,6‐trichlorpicolinsaures Natrium) (I) wird durch Bestrahlung mit UV‐Licht (300 ‐ 380 nm) in wäßriger Lösung rasch zersetzt.
A. R. MOSIER, W. D. GUENZI
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THE PHOTOLYTIC DEGRADATION OF PICLORAM

Weed Research, 1968
Summary. The effects of sunlight and ultraviolet light (253.7 nm) on 4‐amino‐3,5,6‐trichloropicolinic acid (picloram) in a basic aqueous solution were investigated. Electron‐capture gas chromatography determinations showed that approximately 20% of a 2 × 10−2 M concentration of picloram was degraded for each 48‐hr exposure to ultraviolet light of an ...
R. C. HALL, C. S. GIAM, M. G. MERKLE
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Persistence of Picloram Activity in Soil

Weed Science, 1968
The persistence of 4-amino-3,5,6-trichloropicolinic acid (picloram) in soil was measured after varying periods of time up to 3 years with bioassay technique using sunflowers (Helianthus annuus L., var. Advent) as the indicator plant. Rates of application ranged from 0.5 to 48 oz/A on two soil types at Scott, Saskatchewan and two at Lacombe, Alberta ...
C. H. Keys, H. A. Friesen
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Picloram residues in potatoes and carrots and picloram photodecomposition.

2011
Residues of picloram in four varieties of potatoes, given pre-emergence treatments with picloram at 2 oz per acre and picloram at 2 oz + linuron at 24 oz per acre were determined by electron capture gas chromatography. Average residue levels of 3.9 and 2.7 ppb (fresh weight) were obtained for the picloram and picloram + linuron treatments.
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Dietary toxicity of picloram herbicide in rats

Journal of Toxicology and Environmental Health, 1987
The toxicity of orally administered technical-grade picloram was evaluated in male and female Fischer 344 rats. Dietary dose levels were up to 2000 mg/kg body weight (bw) X d for 2 wk, 500 mg/kg bw X d for 13 wk, or 200 mg/kg bw X d for 12 mo. Routine indices of toxicity were evaluated at all of the respective time periods.
S J, Gorzinski, K A, Johnson, R A, Campbell, T D, Landry   +3 more
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Picloram Resistance in Transgenic Tobacco Expressing an Anti-Picloram scFv Antibody Is Due to Reduced Translocation

Journal of Agricultural and Food Chemistry, 2007
Picloram resistance exhibited by transgenic tobacco (Nicotiana tabacum) plants expressing an anti-picloram single-chain variable fragment (scFv) antibody was investigated through the study of homozygous lines expressing the antibody. Dose-response bioassays, using foliar application of picloram, showed that these homozygous transgenic plants were ...
Jonathan, Horsman, Michael D, McLean, Fernando C, Olea-Popelka, J Christopher, Hall   +3 more
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An Aquatic Hazard Assessment: Picloram

1985
Picloram (4-amino-3,5,6-trichloropicolinic acid) exhibits herbicidal activities on broadleaf weeds and woody plants and is registered under the trademarks of TORDON®, GRAZON®, and AMDON® herbicides. It is an organic acid (pKa = 3.2); thus at environmental pH ranges it is usually found in the ionized anionic form.
MA Mayes, GR Oliver
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