Aeration of the soil was similarly treated. Published data on carbon dioxide production, root density and microbiological activity in the soil were used to develop a mathematical model to derive oxygen and carbon dioxide contents in the root zone. The model was based on steady-state diffusion of gases through the soil.
The models developed were used to derive the watertable required under natural conditions and with subsurface and sprinkler irrigation.
Further a series of experiments in drained plots were described. Apparatus for recording drain discharge and depths of watertable were discussed. Results were analysed to find what factors influenced actual watertable and what criteria should be applied in the design of drainage systems.
|Qualification||Doctor of Philosophy|
|Award date||10 May 1957|
|Place of Publication||'s-Gravenhage|
|Publication status||Published - 1957|
- soil water
- water management
- agricultural land
- groundwater level