Results 171 to 180 of about 7,868 (205)

Carcinogenicity of picloram

Journal of Toxicology and Environmental Health, 1981
Two studies of the carcinogenicity of the herbicide picloram in animals were reviewed. Examination of histological sections showed that picloram is highly carcinogenic in rats and mice. Neoplasms at all sites, including malignant neoplasms, were increased in male and female rats given both low and high doses of picloram in the National Cancer Institute
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Subcellular Distribution of Picloram

Physiologia Plantarum, 1973
AbstractGas chromatographic and radioisotopic analyses were made of cell wall, chloroplast, mitochondria and the remaining cytoplasm fractions of cowpea (Vigna sinensis Endl. cv. Southern Blackeye) trifoliates acropetal to primary leaves treated with the growth regulator 4‐amino‐3,5,6‐trichloro‐picolinic acid (picloram).
J. R. BAUR, J. J. BOWMAN
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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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