Results 311 to 320 of about 88,290 (330)

The Influence of Soil Organic Matter on the Phytotoxicity of Herbicides

Weeds, 1962
The toxicity indices to cotton of 12 soil-incorporated herbicides were highly and positively correlated with soil organic matter, cation exchange capacity, exchangeable calcium, moisture equivalent, free drainage value and total exchangeable bases. The characteristics of the responses indicate that adsorption of the 12 herbicides on organic matter ...
R. P. Upchurch, D. D. Mason
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Evaluation of an Organic Semiconductor as a Sensor of Volatilized Herbicides

Journal of Environmental Quality, 2000
AbstractThe use of a ytterbium bisphthalocyanine Langmuir‐Blodgett film sensor for the study of the volatilization of the herbicides imazamethabenz‐methyl, tri‐allate, and terbutryn is evaluated. The dynamic response of the sensor to the herbicides is analyzed using a model that relates the response of an isotropic sensor to the total immobilized ...
Jorge Souto, J.A. de Saja, S. Bolado, J. Álvarez-Benedí   +3 more
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HERBICIDES THE RELATIVE TOXICITY OF NITROPHENOLS TO VARIOUS ORGANISMS

Annals of Applied Biology, 1952
The effect of increasing degrees of nitration on the toxicity of phenols was assessed by measuring the toxicity of phenol, o‐ and p‐nitro phenols and 2:4‐dinitro phenol with several different test organisms. Toxicity levels were determined by the concentration required in each case to bring about the following responses: (i) to halve the rate of radial
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Role of Humified Organic Matter in Herbicide Adsorption

Weed Technology, 1989
Organic matter is the soil constituent most often associated with herbicide adsorption. Structural diversity makes humified organic material an ideal substrate for the adsorption of many pesticides, but variability in composition and distribution in situ complicates interpretation of its quantitative effect on adsorption.
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Organic Matter Reactions Involving Herbicides in Soil

Journal of Environmental Quality, 1972
AbstractDocumentary evidence is presented in support of the view that organic matter plays a major role in the adsorption of herbicides in soil, and that organic matter content is usually the soil factor most directly related to herbicidal behavior. Major attention is given to the nature and origin of humic and fulvic acids, with special emphasis being
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Surface Ionization Organic Mass Spectrometry ofs-Triazine Herbicides

Journal of Mass Spectrometry, 1997
Surface ionization organic mass spectrometry (SIOMS) was applied to some s-triazine herbicides (simazine, atrazine, simetryne, ametryne and prometryne) by using quadrupole mass spectrometry in which the thermal ion source has a rhenium oxide emitter.
Hiromi Arimoto, Kazuhiro Hatanaka, Yoshihiro Mitsutsuka, Toshihiro Fujii   +3 more
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Effects of an Organic Arsenical Herbicide on a Salt Marsh Ecosystem [PDF]

Journal of Environmental Quality, 1975
AbstractThe effects of single and repeat applications of monosodium methanearsonate (MSMA) on the standing crops of smooth cordgrass (Spartina alterniflora L.), a periwinkle (Littorina irrorata Say), and a rib mussel (Modiolus demissus Dillwyn) were investigated.
D. E. Davis, A. C. Edwards
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Hydromulches as a possible alternative to herbicides in organic woody crops.

2021
<p>One of the main problems associated to woody crops is the weed control. This activity is mainly done by the application of herbicides and repetitive tillage, with the consequent environmental problems in the first case and the progressive soil erosion and fuel fossil consumption in the second one.
Carlos Ortega, Jaime Villena, Sara González-Mora, Concepción Atance, Juan Antonio Campos, Marta María Moreno Valencia, Carmen Moreno, Antonio Ruiz-Orejón   +7 more
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Binding of Triazine Herbicides to Antibodies in Anhydrous Organic Solvents

Analytical Letters, 1990
Abstract The binding of atrazine and an atrazine derivative dissolved in various nonpolar organic solvents to immobilized polyclonal antibodies raised against the herbicide was studied. The antibodies immobilized onto immunodyne membranes were stable in chloroform and in buffer for at least 65 hours at room temperature.
W. Stöcklein, Rolf D. Schmid, A. Gebbert   +2 more
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Organic Substrates and Microbial Conversion of Herbicides in Soil

1992
ABSTRACT Kunc, F., 1991. Organic substrates and microbial conversion of herbicides in soil. Presence of organic compounds in soil is one of the main factors that determine the activity of microorganisms including their capability of conversion of xenobiotics.
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