• Contact Us
    • Send Feedback
    • Login
    View Item 
    •   Home
    • Journal and Journal Articles
    • Journal and Journal Articles
    • View Item
    •   Home
    • Journal and Journal Articles
    • Journal and Journal Articles
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

    Whole Repository
    CollectionsIssue DateRegionCountryHubAffiliationAuthorsTitlesSubject
    This Sub-collection
    Issue DateRegionCountryHubAffiliationAuthorsTitlesSubject

    My Account

    Login

    Welcome to the International Institute of Tropical Agriculture Research Repository

    What would you like to view today?

    Thermal conductivity, thermal diffusivity, and thermal capacity of some Nigerian soils

    Thumbnail
    View/Open
    S85ArtGhumanThermalInthomNodev.pdf (2.428Mb)
    Date
    1985
    Author
    Ghuman, B.S.
    Lal, R.
    Type
    Journal Article
    Target Audience
    Scientists
    Metadata
    Show full item record
    Abstract/Description
    Thermal conductivity increased with increasing soil water content. Clayey soils had lower thermal conductivity than sandy soils at all water levels studied. Thermal conductivity ranged from 0.37 to 1.42 for sandy loam, from 0.37 to 1.90 for loam, from 0.38 to 1.71 for sandy clay loam, and from 0.39 to 0.41 mcal/s [middle dot] cm [degrees]C for clay soils at water contents from 0.02 to 0.16 cm3 cm-3. Thermal conductivity differences among soils were smaller at lower soil water contents than at higher water contents. Thermal conductivity did not continuously increase with water content for the washed sand. Soil containing gravel had lower thermal conductivity than gravel-free soil. Thermal conductivity for a gravelly soil measured in situ was appreciably lower than that of the sieved and homogeneous laboratory soil columns. Thermal diffusivity of sandy or loamy soils increased with water content to the peak and then decreased with further increase in water content. Soils of fine texture, however, did not exhibit a distinct thermal diffusivity peak. Volumetric heat capacity calculated from measured values of thermal conductivity and diffusivity agreed closely with those estimated from volume fractions of soil components (by the de Vries equation) for coarse- to medium-textured soils, but not for fine-textured soils. At air-dry wetness, clayey soils generally had higher thermal capacity than sandy soils.
    https://dx.doi.org/10.1097/00010694-198501000-00011
    Multi standard citation
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/1880
    Non-IITA Authors ORCID
    B.S. Ghumanhttps://orcid.org/0000-0002-7792-9147
    Digital Object Identifier (DOI)
    https://dx.doi.org/10.1097/00010694-198501000-00011
    IITA Subjects
    Soil Information; Soil Surveys And Mapping
    Agrovoc Terms
    Sandy Soils; Thermal Properties; Water Content; Thermal Diffusivity; Thermal Capacity; Seed Germination; Seedling Emergence
    Regions
    Africa; West Africa
    Countries
    Nigeria
    Journals
    Soil Science
    Collections
    • Journal and Journal Articles5283

    Related items

    Showing items related by title, author, creator and subject.

    • Thumbnail

      Thermal infrared imaging of the temporal variability in stomatal conductance for fruit trees 

      Struthers, R.; Ivanova, A.; Tits, L.; Swennen, R.L.; Coppin, P. (Elsevier, 2015)
    • Thumbnail

      Plantain (Musa spp. AAB) bunch yield and root health response to combinations of physical, thermal and chemical sucker sanitation measures 

      Hauser, S. (2007)
      Plantain is an important staple food in West and Central Africa and the Congo Basin. The crop is largely grown in extensive 'slash and burn' systems, drawing heavily on the natural resource base, but is low-yielding due to its high susceptibility to a complex of root and corm pests and diseases. Farmers are unaware of nematodes, fungi and banana weevil eggs, and therefore practise virtually no pest or disease control. This study evaluated the effects on plantain bunch yield of factorial combinations ...
    • Thumbnail

      Diet dependent life history, feeding preference and thermal requirements of the predatory mite Neoseiulus baraki (Acari: Phytoseiidae) 

      Domingos, C.A.; Melo, J.W.D.S.; Gondim, M.G.; Moraes, G.J. de; Hanna, R.; Lawson-Balagbo, L.M.; Schausberger, P. (2010)
      Neoseiulus baraki Athias-Henriot (Acari: Phytoseiidae) has been reported from the Americas, Africa and Asia, often in association with Aceria guerreronis Keifer (Acari: Eriophyidae), one of the most important pests of coconut (Cocos nucifera L.) in different parts of the world. That phytoseiid has been considered one of the most common predators associated with A. guerreronis in Brazil. The objective of this study was to evaluate the feeding preference and the effect of food items commonly present ...
    copyright © 2019  IITASpace. All rights reserved.
    IITA | Open Access Repository