Results 171 to 180 of about 2,903 (220)

A gas-chromatographic determination of residues of Picloram

The Analyst, 1967
A method is described for the gas-chromatographic determination of Picloram herbicide in soils and plant material by using an electron-capture detector. The method described for soil has a sensitivity of 0·02 p.p.m. By the use of more rigorous clean-up procedures Picloram can be detected in other plant material at a level of 0·005 p.p.m., and ...
J S, Leahy, T, Taylor
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

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

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

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

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

Herbicide Analysis by Pulse Polarography-Picloram

International Journal of Environmental Analytical Chemistry, 1973
Abstract The herbicide picloram, 4-amino-3,5,6-trichloro-picolinic acid, can be determined at 0.02 ppm, without concentration, by pulse polarography. The effects of pH, ionic strength, and buffer constituents on the catalytic hydrogen process have been studied to optimize conditions for highest sensitivity for picloram.
D D, Gilbert, J M, Mann
exaly   +3 more sources

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

Movement and Persistence of Picloram in Soil

Weed Science, 1972
The movement and persistence of 4-amino-3,5,6-trichloropicolinic acid (picloram) in an Osborne clay soil was determined over a 4-year period. Picloram concentrations were determined with soybean(Glycine max(L.) Merr. ‘Altona’) as the bioassay plant. Application rates ranged from 35 to 700 g/ha.
J. H. Hunter, E. H. Stobbe
openaire   +1 more source