scholarly journals Dielectric models for moisture determination of soils with variable organic matter content

Geoderma ◽  
2021 ◽  
Vol 401 ◽  
pp. 115288
Author(s):  
Agnieszka Szypłowska ◽  
Arkadiusz Lewandowski ◽  
Shin Yagihara ◽  
Hironobu Saito ◽  
Kahori Furuhata ◽  
...  
Keyword(s):  
Organic Matter ◽  
Organic Matter Content ◽  
Matter Content ◽  
Moisture Determination

scholarly journals A small rainfall simulator for the determination of soil erodibility.

1987 ◽  
Vol 35 (3) ◽  
pp. 407-415 ◽  
Author(s):  
A. Kamphorst
Keyword(s):  
Organic Matter ◽  
Soil Conservation ◽  
Standard Procedure ◽  
Organic Matter Content ◽  
Clay Content ◽  
Matter Content ◽  
Soil Erodibility ◽  
Rainfall Simulator ◽  
Highly Sensitive

A small rainfall simulator is described, which can be used in the field as well as in the laboratory for the determination of infiltration and erosion characterisitcs of soils. It is particularly suitable for soil conservation surveys, as it is light to carry and easy to handle in the field. A description is given of a standard procedure for the determination of topsoil erodibilities in the field and some results are presented. The method appears to be highly sensitive to soil properties influencing soil erodibility, such as clay content, organic matter content and soil pH. (Abstract retrieved from CAB Abstracts by CABI’s permission)

Determination of glyphosate in surface water with high organic matter content

2017 ◽  
Vol 24 (9) ◽  
pp. 7880-7888 ◽  
Author(s):  
Vahur Toss ◽  
Ivo Leito ◽  
Sergei Yurchenko ◽  
Rene Freiberg ◽  
Anneli Kruve
Keyword(s):  
Organic Matter ◽  
Surface Water ◽  
Organic Matter Content ◽  
Matter Content ◽  
High Organic Matter Content ◽  
High Organic Matter

High-throughput determination of the organic matter content in soil and municipal sludge by headspace gas chromatography

2019 ◽  
Vol 11 (47) ◽  
pp. 5963-5968
Author(s):  
Xiaojie Tu ◽  
Zhanbo Hu ◽  
Ting Zhao ◽  
Xin-Sheng Chai ◽  
Jie Wang ◽  
...  
Keyword(s):  
Organic Matter ◽  
Acidic Medium ◽  
Rapid Determination ◽  
Organic Matter Content ◽  
Matter Content ◽  
Chromatographic Technique ◽  
Headspace Gas Chromatography ◽  
Municipal Sludge ◽  
Headspace Gas

This paper reports on a new headspace gas chromatographic technique for rapid determination of organic matter (OM) in soil and municipal sludge samples, based on a redox reaction, i.e., converting OM into CO2 by dichromate at an acidic medium.

A source of error in the estimation of the organic matter content of samples containing calcium carbonate

1972 ◽  
Vol 79 (3) ◽  
pp. 541-542 ◽  
Author(s):  
F. D. DeB. Hovell ◽  
E. R. Ørskov
Keyword(s):  
Organic Matter ◽  
Calcium Carbonate ◽  
Volatile Fatty Acids ◽  
Organic Matter Content ◽  
Matter Content ◽  
Carbonate Content ◽  
Apparent Digestibility ◽  
High Calcium ◽  
The Difference

The conventional method for the determination of the organic matter content of diets and faeces is by ashing the sample at 550 °C (A.O.A.C, 1965)Organic matter (O.M.) = dry matter (D.M.)–ash.If the sample contains calcium carbonate, then some of this carbonate will be converted to oxide (Vogel, 1951) and the weight of carbon dioxide evolved will be calculated as organic matter. The amount of carbonate converted will be dependent upon the temperature at which the sample is ashed and the duration of the ashing process. We have found (Ørskov, Hovell & Allen, 1966; Hovell & Greenhalgh, 1972) that when calcium salts of volatile fatty acids are included in diets given to sheep, most of the calcium is excreted in the faeces as carbonate, and since apparent digestibility is the difference between the amounts of nutrient ingested and excreted, the estimation of the apparent digestibility of organic matter will be in error if no correction is made for the high calcium carbonate content of the faeces. For example, a diet which contained 9·2% of calcium acetate had a true organic matterapparent digestibility of 86·8%. Had no correction been made this would have been estimated as 84·9%.

Experimental determination of the active organic matter content in some soils of natural and agricultural ecosystems

2006 ◽  
Vol 39 (3) ◽  
pp. 251-260 ◽  
Author(s):  
V. M. Semenov ◽  
I. K. Kravchenko ◽  
L. A. Ivannikova ◽  
T. V. Kuznetsova ◽  
N. A. Semenova ◽  
...  
Keyword(s):  
Organic Matter ◽  
Experimental Determination ◽  
Organic Matter Content ◽  
Matter Content ◽  
Agricultural Ecosystems ◽  
Active Organic Matter

Optimization of conditions for the determination of the organic matter content of waters by reagentless oxithermography and its application to the analysis of natural waters

2016 ◽  
Vol 71 (10) ◽  
pp. 1022-1027 ◽  
Author(s):  
I. V. Rogovaya ◽  
B. K. Zuev ◽  
T. V. Titova ◽  
S. V. Morzhukhina ◽  
A. E. Saraeva ◽  
...  
Keyword(s):  
Organic Matter ◽  
Natural Waters ◽  
Organic Matter Content ◽  
Matter Content
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