Results 241 to 250 of about 2,131,203 (297)

Persistence of Fluoroacetate and Fluoroacetamide in Soil

Nature, 1966
LABORATORY tests have shown that sodium fluoroacetate1,2 and fluoroacetamide3,4 can act as systemic insecticides, and the latter compound has been tested or used in the field for pest control (mainly against aphids) in several countries5–7. In Britain, however, following the Smarden incident, the use of these compounds as rodenticides has been severely
W A, David, B O, Gardiner
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Persistence and biodegradation of carbaryl in soils

Journal of Environmental Science and Health, Part B, 1980
The persistence of the methylcarbamate pesticide carbaryl was studied in four soils under flooded conditions. A substantial portion of the pesticide was recovered from all soils even after 15 days of its application, with the recovery ranging from 37% in an alluvial soil to 73% in an acid sulfate soil.
K, Venkateswarlu, K, Chendrayan, N, Sethunathan   +2 more
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Persistence of methidathion in soils

Bulletin of Environmental Contamination and Toxicology, 1970
The organophosphorus insecticide, methidathion, degraded rapidly in a sandy loam, silt loam, clay loam and organic soil. Fifty percent of the initial applications decomposed in less than 2 weeks and more than 90% of the insecticide disappeared within 16 weeks. When soils were treated with methidathion containing(14)C in the ring or methyl side chain 40
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Soil Persistence of Napropamide

Weed Science, 1979
The persistence of napropamide [2-(α-naphthoxy)-N,N-diethylpropionamide] applied at 2.24- and 4.48-kg/ha was studied for 2 yr at two locations in the field. Wheat (Triticum aestivumL. ‘Arthur 71′) was severely injured when sown in the fall following a spring application of napropamide.
R. R. Romanowski, A. Borowy
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Soil Persistence of Dinitramine

Weed Science, 1980
The effects of soil temperature, moisture, and herbicide concentration on the rate of degradation of dinitramine (N4,N4-diethyl-α,α,α-trifluoro-3,5-dinitrotoluene-2,4-diamine) were measured in clay loam and sandy loam in the laboratory. In sandy loam, the rate of degradation increased with increasing temperature.
J. A. Poku, R. L. Zimdahl
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Persistence of Hookworm Larvae in Soil

The American Journal of Tropical Medicine and Hygiene, 1953
Summary Eighteen enclosed units of soil were inoculated with equal numbers of hookworm eggs and dampened daily until larvae reached the infective stage. Half were then dampened daily and half left to dry until their turns came to be sampled. Sampling, which began on the 5th day in the wet series and on the 9th day in the dry, was progressive and ...
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Persistence of fensulfothion in soil

Journal of Environmental Science and Health, Part B, 1977
Abstract Persistence of Fensulfothion (O,O‐diethyl‐O‐(p‐methyl sulfinyl) phenyl phosphorothioate) in soil under laboratory conditions was followed using 3 day old larvae of the silkworm, Bombyx mori L. and also by cholinesterase inhibition method. Low concentrations i.e., 50–175 ppm persisted for about 50–60 days whereas high concentrations (250–500 ...
S. Sheela, V.N. Vasantharajan
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Persistence of D.D.T. and Benzene Hexachloride in Soils

Annals of Applied Biology, 1948
Acid and alkaline soils, both alone and mixed with 2 % of D.D.T. or 2 % of benzene hexa‐chloride (mixed isomers, containing 10% of the γ‐isomer) have been exposed outdoors or subjected to controlled leaching in the laboratory. Residual insecticide has been estimated at intervals by a method involving dehydrohalogenation, and determinations have also ...
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Metribuzin Persistence in Soil

Weed Science, 1977
The persistence of metribuzin [4-amino-6-tert-butyl-3-(methylthio)-as-triazine-5(4H)-one] in several soils from the lower alluvial floodplain of the Mississippi River was studied in the greenhouse and laboratory using bioassay and gas chromatographic methods of residue detection.
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Persistence of triazine herbicides in soils

1970
Although phytotoxic residues of the triazine herbicides are objectionable when, in some soils and under some environmental conditions, sensitive plants are injured the season after application, residual activity is essential for weed control and soil sterilization.
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