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Spectrophotometric measurement of soil color and its relationship to moisture and organic matter
Contributor:Paul, E. A.; Shields, J. A.; Head, W. K.; St. Arnaud, R. J.
The color of soil samples taken from the Ap horizons of Chernozemic and Gray Wooded (Podzolic) soils was measured spectrophotometrically at moisture levels ranging from air-dryness to field capacity. The Munsell re-notations ...
Measurement of soil color
Contributor:Paul, E. A.; Shields, J. A.; St. Arnaud, R. J.; Clayton, J. S.
The color of cultivated surface samples from Chernozemic and Gray Wooded soils were measured by visual and spectroreflectance methods. Variations in visual color measurements among different observers were of sufficient ...
Effect of moisture, temperature, and nitrogen on yield and protein quality of Thatcher wheat
Contributor:Paul, E. A.; Sosulski, F. W.; Lin, D. M.
Soil moisture level was the most important factor controlling plant and grain yields while nitrogen fertilizer had the greatest influence on protein content and sedimentation value. Lower temperatures and nitrogen fertilization ...
The influence of soil moisture, nitrogen fertilization, and temperature on quality and amino acid composition of Thatcher wheat
Contributor:Hutcheon, W. L.; Sosulski, F. W.; Paul, E. A.
The protein content of Thatcher wheat grown in the growth chamber was increased by reduced water supply, nitrogen fertilization, and higher air temperatures. Soil moisture conditions had a greater influence on protein ...
Investigations of the dynamics of soil humus utilizing carbon dating techniques
Contributor:Rennie, D. A.; Campbell, C. A.; Paul, Eldor A.; McCallum, K. J.
The radioactivity of naturally occurring C14 in soil humus when compared to the C14 activity of a standard of recent origin (carbon dating) can be used to estimate the mean residence time of the soil humus in studying ...