Pore network and water retention characteristics of volcanic porous media

2014 ◽  
Vol 65 (5) ◽  
pp. 672-683 ◽  
Author(s):  
N. Dal Ferro ◽  
C. Pagliarin ◽  
F. Morari
Keyword(s):  
Porous Media ◽  
Water Retention ◽  
Pore Network ◽  
Retention Characteristics

Analysis of soil water retention characteristics (SWRC) models using R computer program

2021 ◽  
Author(s):  
Vitalis Kibiwott Too ◽  
Christian Thine Omuto ◽  
Elijah Kipngetich Biamah ◽  
John Paul Obiero
Keyword(s):  
Computer Program ◽  
Soil Water ◽  
Water Retention ◽  
Soil Water Retention ◽  
Retention Characteristics

scholarly journals Investigating soil water retention characteristics at high suctions using relative humidity control

2016 ◽  
Vol 9 ◽  
pp. 10007 ◽  
Author(s):  
Vasileios Mantikos ◽  
Steven Ackerley ◽  
Andrew Kirkham ◽  
Aikaterini Tsiampousi ◽  
David M.G. Taborda ◽  
...  
Keyword(s):  
Relative Humidity ◽  
Soil Water ◽  
Water Retention ◽  
Soil Water Retention ◽  
Humidity Control ◽  
Retention Characteristics

Impact of Biochar on Water Holding Capacity of Two Chinese Agricultural Soil

2014 ◽  
Vol 941-944 ◽  
pp. 952-955 ◽  
Author(s):  
Dao Yuan Wang ◽  
Deng Hua Yan ◽  
Xin Shan Song ◽  
Hao Wang
Keyword(s):  
Particle Size ◽  
Particle Size Distribution ◽  
Size Distribution ◽  
Soil Type ◽  
Agricultural Soil ◽  
Water Retention ◽  
Water Holding Capacity ◽  
Walnut Shell ◽  
Retention Characteristics ◽  
Water Holding

Adding biochar to agricultural soil has been suggested as an approach to enhance soil carbon sequestration. Biochar has also been used as a soil amendment to reduce nutrient leaching, reduce soil acidity and improve water holding capacity. Walnut shells and woody material are waste products of orchards that are cheap, carbon-rich and good feedstock for production of biochar. The effectiveness of biochar as an amendment varies considerably as a function of its feedstock, temperature during pyrolysis, the biochar dose to soil, and mechanical composition. Biochar was produced from pyrolysis of walnut shell at 900 °C and soft wood at 600 to 700 °C. We measured the effect of these different parameters in two types of agricultural soil in Jilin and Beijing, China, a silt clay loam and a sandy loam, on the soils’ particle size distribution and water retention characteristics. Biochars with two different doses were applied to each soil type. Soil field capacity and permanent wilting point were measured using a pressure plate extractor for each combination of biochar and soil type. The results show that the effect of biochar amendment on soil water retention characteristics depend primarily on soil particle size distribution and surface characteristics of biochar. High surface area biochar can help raise the water holding capacity of sandy soil.

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