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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
141

Soil stabilization with powdered and coarse quicklime

Allanach, William Cummings, 1941- January 1974 (has links)
No description available.
142

Natural control of soil inhabiting nematodes.

Khan, Shakil Ahmad. January 1973 (has links)
No description available.
143

The influence of soil characteristics and fertilizer treatment on growth and chemical composition of Pinus resinosa.

Cotton, Donald. R. January 1964 (has links)
Vast areas of abandoned or sub-marginal land exist. In Quebec alone it has been estimated that there are about 1,400,000 acres of abandoned farmland (32). Some of this land is being turned into tree farms and more of it could be so utilized if some problems could be overcome. The chief difficulties existing are mainly those of uneven topography, poor drainage and low fertility status of the soil. This latter problem could be possibly the easiest difficulty to overcome provided adequate knowledge existed of the effects of fertilization on reforested areas. To assess relative fertility levels of soils for purposes of reforestation methods of soils analysis as well as plant analysis may be useful. These must be developed in conjunction with fertilizer application experiments either in the field or in the greenhouse under a controlled environment.
144

Technique for determining soil potassium availability using K-42.

Nutall, W. F. January 1965 (has links)
The advent of radioactive isotopes as tracers in fertilizers, led to a new concept of determining availability of soil nutrients to the plant (Fried and Dean, 1952; Larson, 1952). [...]
145

Water retention in clay soils by capillary and swelling forces.

Chang, Ren-Kong. January 1966 (has links)
Water in clay soils is considered to be held by capillary and swelling forces. Both forces are operative but the importance of each force depends upon the water content. This relationship was assessed from water retention, swelling pressure, and volume change studies using samples of different aggregate sizes compacted to different porosities. [...]
146

Studies on salt movement and on tracing water movement in soils.

Hamid, Abdul. January 1966 (has links)
Inadequate drainage is a challenging problem in both humid and arid regions of the world. In arid regions water logging is the basic cause of salinity and alkalinity, and they go hand in hand. One of these conditions usually indicates the presence of the other. [...]
147

Dynamic shear strength of clays.

Songonuga, Oluwole Oladapo Odukoya. January 1967 (has links)
No description available.
148

Evaporation from soil in early spring as determined by surface conditions.

Iqbal, Muhammad Mohsin. January 1970 (has links)
No description available.
149

Study of track performance over soft soils

Elmamlouk, Hussein H. January 1977 (has links)
No description available.
150

Energy analysis for vane-cone prediction of wheel-soil interaction

Youssef, Abdel Fattah A. January 1977 (has links)
No description available.

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