Results 71 to 80 of about 1,991 (99)

Persistence of herbicides in soil

Crops & Soils, 2016
While it is desirable for the chemicals to control weeds during the season of application, it is not desirable for them to persist and affect subsequent crop growth. Factors that determine the length of time herbicides persist fall into three categories: soil factors, climatic conditions, and herbicidal properties.
openaire   +1 more source

The fate and persistence of polychlorinated biphenyls in soil

Journal of Environmental Monitoring, 1999
The fate and persistence of PCBs 28, 52, 101, 138, and 180 artificially introduced into three soils was studied under a variety of field conditions for up to 415 d following initial contamination. A relationship was detected between ln Koa (octanol/air partition coefficient) and the experimentally observed first-order loss rate constant that was ...
S, Ayris, S, Harrad
openaire   +2 more sources

Movement and persistence of aldicarb in certain soils

Archives of Environmental Contamination and Toxicology, 1977
When the rate of movement and the persistence of aldicarb in 4 types of soils were investigated in laboratory and field studies some leaching was detected in coarse sand; however, leaching was quite limited in clay loam and muck soils. These data indicated that aldicarb degraded quite rapidly in the selected soils and most of the applied radioactivity ...
J R, Coppedge, D L, Bull, R L, Ridgway
openaire   +2 more sources

Persistent C in Soils

Mineralogical Magazine, 1998
There is general agreement that in many soils some C compounds persist for centuries and perhaps millenia, particularly deep in the soil profile. Various chemistries and mechanisms of stabilization of C compounds have been proposed to explain their longevity in soils.
openaire   +1 more source

TBT and TPhT persistence in a sludged soil

Chemosphere, 2006
The persistence of tributyltin (TBT) and triphenyltin (TPhT) in soils was studied, taking into consideration the quantity of sewage sludge, TBT and TPhT concentrations in soil as well as the soil pH. The organotin compounds (OTC) were introduced into the soil via a spiked urban sludge, simulating agricultural practise. OTC speciation was achieved after
Christophe, Marcic, Isabelle, Le Hecho, Laurence, Denaix, Gaëtane, Lespes   +3 more
openaire   +2 more sources

Persistence of Chlorinated Hydrocarbon Insecticides in Soils

Science, 1967
The percentages of technical aldrin, chlordane, endrin, heptachlor, Dilan, isodrin, BHC, and toxaphene remaining in Congaree sandy loam soil after 14, years were 40, 40, 41, 16, 23, 15, 10, and 45, respectively; those of purified aldrin and technical dieldrin after 15 years were 28 and 31, respectively; and the percentage of technical DDT in three ...
R G, Nash, E A, Woolson
openaire   +2 more sources

Persistence of hexaconazole, a triazole fungicide in soils

Journal of Environmental Science and Health, Part B, 2000
Persistence of hexaconazole (2-(2,4-dichlorophenyl)- 1-(1H-1,2,5-triazol-1-yl) hexan-2-ol) was studied in alluvial, red and black soils under flooded and nonflooded conditions. This fungicide was more persistent in all soils under flooded conditions than under nonflooded conditions and at 27 degrees C than at 35 degrees C.
N, Singh, P, Dureja
openaire   +2 more sources

Persistence of chlorfenvinphos in soils

Pesticide Science, 1975
AbstractThe persistence and behaviour of chlorfenvinphos, an organophosphorus insecticide, was studied on different soils. On a peaty soil the insecticide was only very slowly degraded, there being 70% of the applied dose remaining after 21 weeks and 30% after nearly 12 months. On the sandy soils, however, persistence was much shorter; between 3 and 15%
openaire   +1 more source

Persistence, degradation and leaching of coumaphos in soil

Journal of Environmental Science and Health, Part B, 2000
Dissipation, degradation and leaching of fresh 14C coumaphos, alkylated 14C coumaphos and aged residues of 14C coumaphos from vats were studied in alkaline sandy loam soil in soil columns in the field under subtropical conditions in Delhi for a year. Dissipation, degradation and bound residue formation was more in case of alkali treated coumaphos than ...
T, Jindal, D K, Singh, H C, Agarwal
openaire   +2 more sources

Terbuthylazine persistence in an organic amended soil

Journal of Environmental Science and Health, Part B, 2008
The aim of this work was to study the effect of the application of a solid waste from olive oil production (alperujo) on the movement and persistence of the herbicide terbuthylazine (N2-tert-butyl-6-chloro-N4-ethyl-1,3,5-triazine-2,4-diamine). An experimental olive grove was divided in two plots: (i) Plot without organic amendment (blank) and (ii) Plot
Cabrera Mesa, Alegría, Cox, Lucía, Velarde Muñoz, Pilar, Cornejo, J.   +3 more
openaire   +3 more sources