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Filtering by: Creator Institut national agronomique de Tunisie Committee Member Evans, Harold J.

Morphology and genesis of Gray Podzolic soils in Thailand

Creator:

Rojanasoonthon, Santhad

Abstract:

Nine Gray Podzolic soils from different physiographic regions of Thailand were studied to determine their characteristics and genesis in relation to their parent materials, land form, pedogenic environment, classification and management. The clay was characterized by X-ray diffraction and standard chemical and physical analyses were performed. Mineralogy of the light...

Resource Type:

Dissertation
Effect of sulfur on dinitrogen fixation of alfalfa (Medicago sativa L.)

Creator:

Lopez-Jurado, Gerardo

Abstract:

Field experiments were established in 1982 and 1983 on a Woodburn silt loam soil (Aquultic Argixeroll) to examine the effect of S fertilizer on dinitrogen fixation and dry matter yield of 10 week-old seedling alfalfa (Medicago sativa L. cv. 'Apollo'). Six levels of S fertilizer (0 to 67.2 kg S/ha)...

Resource Type:

Dissertation