Control of Wind Erosion, Loss of Soils, and Organic Matter Using the “Fallow Band System” in Semiarid Sandy Soils of the Sahel

2017 ◽  
pp. 309-321
Author(s):  
Kenta Ikazaki
Keyword(s):  
Organic Matter ◽  
Wind Erosion ◽  
Band System ◽  
Sandy Soils ◽  
Erosion Loss

Organic matter fractions and N mineralization in vegetable-cropped sandy soils

2013 ◽  
Vol 29 (3) ◽  
pp. 333-343 ◽  
Author(s):  
K. Jegajeevagan ◽  
S. Sleutel ◽  
N. Ameloot ◽  
M. A. Kader ◽  
S. De Neve
Keyword(s):  
Organic Matter ◽  
N Mineralization ◽  
Sandy Soils ◽  
Organic Matter Fractions

Organic Matter Fractions Controlling Soil Water Repellency in Sandy Soils From the Doñana National Park (Southwestern Spain)

2014 ◽  
Vol 27 (5) ◽  
pp. 1413-1423 ◽  
Author(s):  
Nicasio T. Jiménez‐Morillo ◽  
José A. González‐Pérez ◽  
Antonio Jordán ◽  
Lorena M. Zavala ◽  
José María Rosa ◽  
...  
Keyword(s):  
Organic Matter ◽  
Soil Water ◽  
National Park ◽  
Sandy Soils ◽  
Water Repellency ◽  
Soil Water Repellency ◽  
Doñana National Park ◽  
Organic Matter Fractions

scholarly journals Physical Crust Formation on Sandy Soils and Their Potential to Reduce Dust Emissions from Croplands

Land ◽  
2020 ◽  
Vol 9 (12) ◽  
pp. 503
Author(s):  
Heleen Vos ◽  
Wolfgang Fister ◽  
Frank Eckardt ◽  
Anthony Palmer ◽  
Nikolaus Kuhn
Keyword(s):  
Wind Erosion ◽  
Sandy Soils ◽  
Soil Surface ◽  
Free State ◽  
Cone Penetrometer ◽  
Crust Formation ◽  
Dust Emissions ◽  
Dust Flux ◽  
Dust Sources

The sandy croplands in the Free State have been identified as one of the main dust sources in South Africa. The aim of this study was to investigate the occurrence and strength of physical soil crusts on cropland soils in the Free State, to identify the rainfall required to form a stable crust, and to test their impact on dust emissions. Crust strength was measured using a fall cone penetrometer and a torvane, while laboratory rainfall simulations were used to form experimental crusts. Dust emissions were measured with a Portable In-Situ Wind Erosion Laboratory (PI-SWERL). The laboratory rainfall simulations showed that stable crusts could be formed by 15 mm of rainfall. The PI-SWERL experiments illustrated that the PM10 emission flux of such crusts is between 0.14% and 0.26% of that of a non-crusted Luvisol and Arenosol, respectively. The presence of abraders on the crust can increase the emissions up to 4% and 8% of the non-crusted dust flux. Overall, our study shows that crusts in the field are potentially strong enough to protect the soil surfaces against wind erosion during a phase of the cropping cycle when the soil surface is not protected by plants.

Modelling soil organic matter changes in ley-arable rotations in sandy soils of Northeast Thailand

1998 ◽  
Vol 49 (3) ◽  
pp. 463-470 ◽  
Author(s):  
J. WU ◽  
A. G. O'DONNELL ◽  
J. K. SYERS ◽  
M. A. ADEY ◽  
P. VITYAKON
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Sandy Soils ◽  
Northeast Thailand

Water repellence in sandy soils of South-Western Australia. II. Some chemical characteristics of the hydrophobic skins

Soil Research ◽  
1972 ◽  
Vol 10 (1) ◽  
pp. 35 ◽  
Author(s):  
FJ Roberts ◽  
BA Carbon
Keyword(s):  
Organic Matter ◽  
Diethyl Ether ◽  
Cold Water ◽  
Sandy Soils ◽  
Prolonged Treatment ◽  
Water Repellent ◽  
Chemical Characteristics ◽  
Produce Water ◽  
Water Repellence ◽  
Humic Fraction

The hydrophobic organic skins on sand grains were resistant to removal by solvents such as cold water, concentrated acid, diethyl ether, ethanol, benzene, chloroform, and acetone. Prolonged treatment with hot diethyl ether, ethanol, and benzene removed part of the coating. Treatment with dilute solutions of alkali removed the skin as suspended particles. Compounds within the very stable humic fraction of the soil organic matter appeared to be mainly responsible for water repellence in soils. Deposits of fresh organic materials could also produce water repellent properties.

Organic matter recovery in sandy soils under bush fallow in southern Mozambique

2008 ◽  
Vol 83 (2) ◽  
pp. 153-161 ◽  
Author(s):  
Alfredo B. J. C. Nhantumbo ◽  
Stig Ledin ◽  
Christiaan C. Du Preez
Keyword(s):  
Organic Matter ◽  
Sandy Soils ◽  
Bush Fallow

scholarly journals The Potential Applications of Optical Dating to the Sandy Uplands of East Texas and Northwest Louisiana

1998 ◽  
Author(s):  
Charles D. Frederick ◽  
Mark D. Bateman
Keyword(s):  
Organic Matter ◽  
Radiocarbon Dating ◽  
Sandy Soils ◽  
Buried Soils ◽  
East Texas ◽  
Optical Dating ◽  
Landform Evolution ◽  
Sediment Transportation ◽  
Potential Applications ◽  
Geomorphic Processes

The fine, sandy soils of East Texas and Northwest Louisiana have been the source of archaeological debate for some time. This discourse concerns the mode of burial of cultural material in the easily eroded soils and the mechanics of recent (Holocene) landform evolution. Because these deposits are typically well-drained, organic matter does not preserve well, thus hindering the dating of the geomorphic events that figure prominently in their development and the prehistoric occupations which lie buried throughout uplands of this region. A relatively new dating technique, optical dating, has much to offer this region and the archaeological community as it measures the period of time that has elapsed since sand grains were last exposed to sunlight. Hence, it directly dates the time of sediment transportation and deposition. This method is therefore applicable to a number of archaeological and geomorphic processes which may not be dated by traditional methods, owing to the lack of organic matter suitable for radiocarbon dating. In geomorphic contexts, optical dating may be preferred over radiocarbon as it directly dates the time of sedimentation rather than the age of organic matter in features such as buried soils that may be significantly different from the geomorphic event which fossilized the soil.

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