ABSTRACT
This study examines the thermal conductivity of some selected soil samples from coastal sand landform in Ilaje local
government area of Ondo State, Nigeria. The soil samples were sieved into different particle sizes; 300?m, 425?m,
600 ?m, 850 ?m, and 1180 ?m with appropriate mesh and moulded in form of a Lee’s disc. The thermal conductivity
of the samples was determined using parallel plate method. The values of the thermal conductivity increase as the
moisture content increases and decreases with increase in particle sizes for the soil samples. The values of the thermal
conductivity obtained ranged between 0.3444 1 1 Wm K ? ? and 1.8894 1 1 Wm K ? ? . It was noted that the conductivity of
the landforms conforms to the range of conductivities of soil required for some specific crops such as maize, cowpea,
pineapple, okro and root crops. The results in the research would be useful to soil/building and soil scientists as well as
modern mechanized farmers in determining appropriate land forms for agricultural and structural purposes.