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Soil water flow dynamics on raised beds in an acid sulphate soil

field study at HOA AN station, Mekong delta, Vietnam

Quang van, Pham (1998). Soil water flow dynamics on raised beds in an acid sulphate soil. ["eprint_fieldopt_monograph_type_und_thesis" not defined]. Uppsala: (NL, NJ) > Dept. of Soil Sciences > Div. of Hydrotechnics, Sveriges lantbruksuniversitet. Avdelningsmeddelande / Sveriges lantbruksuniversitet, Institutionen för markvetenskap, Avdelningen för lantbrukets hydroteknik ; 98:7
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Abstract

Soil water flows and soil moisture dynamics from raised bed system with and without sugarcane crops during the period January to October 1997 was studied. Measurements were made on soil water contents and ground water level. Soil samples were taken once-a week from the beds randomly. Meteorological conditions were collected at Can Tho meteorological station. Cumulative precipitation during the investigation period was of l377.6 mm. The SOIL model has been used as a tool to simulate the soil water flows, and the soil moisture dynamics in the soil profile. The comparison was done on soil water contents and ground water level between simulations and measurements by linear regression. Simulation was successful in reproducing the general pattern of water flow dynamics and water redistribution. Simulated results agreed well with measurements (R2- values for linear regressions in a range between 46.7 % to 88 % for soil water contents). Simulated cumulative soil evaporation amounted to 695.8 mm from the system with bare soil, and 412.2 mm from the system with sugarcane crops. Simulated water flows and water redistribution's were governed of soil properties, precipitation and, and evaporation. The capillary flow was dominant during the period from January to April. Infiltration for bare soil exceeded infiltration for sugarcane plots with 77.5 mm and the correspondent total drainage was exceeded with 203 mm during the investigation period. In the raised beds covered with crops reduced infiltration flows and runoff flows.

Authors/Creators:Quang van, Pham
Title:Soil water flow dynamics on raised beds in an acid sulphate soil
Subtitle:field study at HOA AN station, Mekong delta, Vietnam
Series/Journal:Avdelningsmeddelande / Sveriges lantbruksuniversitet, Institutionen för markvetenskap, Avdelningen för lantbrukets hydroteknik (0282-6569)
Year of publishing :1998
Number:98:7
Number of Pages:33
Place of Publication:Uppsala
Publisher:Institutionen för markvetenskap, avdelningen för lantbrukets hydroteknik
ISSN:0282-6569
Language:English
Publication Type:Report
Refereed:No
Full Text Status:Public
Subjects:Obsolete subject words > FORESTRY, AGRICULTURAL SCIENCES and LANDSCAPE PLANNING > Soil science
Obsolete subject words > INTERDISCIPLINARY RESEARCH AREAS > Water in nature and society
Keywords:raised beds, Vietnam, soil water, moisture dynamics, SOIL model
URN:NBN:urn:nbn:se:slu:epsilon-e-3524
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-e-3524
ID Code:4890
Department:(NL, NJ) > Dept. of Soil Sciences > Div. of Hydrotechnics
Deposited By: Elisabeth Bölenius
Deposited On:14 Jul 2010 00:00
Metadata Last Modified:22 Jun 2016 06:31

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