Staff Publications

Staff Publications

  • external user (warningwarning)
  • Log in as
  • language uk
  • About

    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

    We have a manual that explains all the features 

Record number 38906
Title Bypass flow and its role in leaching of raised beds under different land use types on an acid sulphate soil.
Author(s) Minh, L.Q.; Tuong, T.P.; Booltink, H.W.G.; Mensvoort, M.E.F. van; Bouma, J.
Source Agricultural Water Management 32 (1997). - ISSN 0378-3774 - p. 131 - 145.
DOI https://doi.org/10.1016/S0378-3774(96)01263-2
Department(s) Laboratory of Soil Science and Geology
PE&RC
Publication type Refereed Article in a scientific journal
Publication year 1997
Keyword(s) infiltratie - hydraulisch geleidingsvermogen - kwel - zure gronden - kattekleigronden - infiltration - hydraulic conductivity - seepage - acid soils - acid sulfate soils
Categories Agrohydrology
Abstract A better understanding of leaching processes in raised beds is useful in assessing management options for acid sulphate soils. Field and laboratory studies were carried out to quantify the effects of soil physical properties and bypass flow on leaching processes of new, 1-year-old and 2-year-old raised beds for yam and pineapple cultivation in a Typic Sulfaquept in Tien Giang, Vietnam. The methylene blue staining technique was used to characterize the water-conducting pores in terms of number, stained area, and total pore perimeter at 10 cm depth intervals of six 1 x 1 m subplots. Undisturbed 20 cm x 25 cm soil cores taken from the raised beds were subjected to three 30 mm h-1 rains. Volume, aluminum and sulphate concentration of the outflows were monitored. Consolidation with time decreased the area and perimeter of water-conducting pores in 2-year-old pineapple beds to about a third, and bypass flow rate to about 80% of those in newly constructed beds. Consolidation did not affect macropore network geometry in yam beds because they were subjected to annual tillage and yam tubers were uprooted regularly. Al3 and SO4/2- concentrations in the outflows of the newly constructed and 1-year-old raised beds were higher in pineapple, while those in 2-year raised beds were higher in yam
Comments
There are no comments yet. You can post the first one!
Post a comment
 
Please log in to use this service. Login as Wageningen University & Research user or guest user in upper right hand corner of this page.