Results 201 to 210 of about 10,954 (260)

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
openaire   +2 more sources

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.
openaire   +1 more source

Degradation of picloram by the electro-Fenton process

Journal of Hazardous Materials, 2008
The degradation of the picloram, a widely used herbicide, has been undertaken by the electrochemical advanced oxidation process, namely electro-Fenton in aqueous solution. This process generates catalytically hydroxyl radicals that are strong oxidizing reagents for the oxidation of organic substances.
Özcan, A., Şahin, Y., Koparal, A.S., Oturan, Mehmet A.   +3 more
openaire   +5 more sources

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
openaire   +1 more source

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
openaire   +2 more sources

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
openaire   +1 more source

Determination of genotoxic damages of picloram and dicamba with comet assay in Allium cepa rooted in tissue culture and distilled water

Molecular Biology Reports, 2022
C. Ozel, F. Unal, Ece Avuloglu-Yilmaz, Esra Erikel, S. Mirici, D. Yuzbasioglu   +5 more
semanticscholar   +1 more source

Reaction of Wheat to Picloram

Weed Science, 1970
Wheat (Triticum aestivum L., var. Selkirk) was most susceptible at the late tiller stage to 4-amino-3,5,6-trichloropicolinic acid (picloram) as determined from weekly applications in the field and the degree of injury increased with rate of picloram. Wheat injury from picloram was manifested by lower kernel yield, greater protein content in the kernels,
openaire   +1 more source

PICLORAM FOR THE CONTROL OF LEAFY SPURGE

Canadian Journal of Plant Science, 1975
The application of 2.2 kg/ha of picloram provided adequate control of Euphorbia esula L. for 3–5 yr after the treatment year. However, regardless of whether the chemical was applied in 1965, 1966, or 1967, it became ineffective by 1971. While it appeared that the chemical disappeared during the 12-mo period prior to the summer of 1971, this could not ...
GARRY BOWES, E. S. MOLBERG
openaire   +1 more source

Dissipation of Picloram in Storm Runoff

Journal of Environmental Quality, 1984
AbstractThe extent of progressive decrease in concentration of the herbicide picloram (4‐amino‐3,5,6‐trichloropicolinic acid) in intermittent streamflow was determined during runoff‐producing storms. Maximum concentrations of picloram were 48 and 250 mg/m3 in initial runoff water leaving a sprayed 8‐ha area in 1978 and 1979.
H. S. Mayeux, C. W. Richardson, R. W. Bovey, Earl Burnett, M. G. Merkle, R. E. Meyer   +5 more
openaire   +1 more source