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Effect of nitrification inhibitor on N immobilization and release of 15N from nonexchangeable ammonium and microbial biomass
Author(s):Paul, E. A.; Juma, N. G.
Date Issued:1983-05
Format:born digital; articles
The disposition of 15N-aqua NH3 and 15N-solution urea in the presence and absence of a nitrification inhibitor [4-amino-1,2,4-triazole (ATC)] was measured under field conditions. ATC caused a 15% greater recovery of ...
Measurement of the polysaccharide content of soils
Author(s):Acton, C. J.; Paul, E. A.; Rennie, D. A.
Date Issued:1963-01
Format:born digital; articles
The polysaccharide content of two soils, measured by precipitating and weighing the microbial gums from the fulvic acid fraction of soil organic matter, and by colorimetric analyses using anthrone, was increased appreciably ...
Relationship of polysaccharides to soil aggregation, The
Author(s):Acton, C. J.; Rennie, D. A.; Paul, E. A.
Date Issued:1963-07
Format:born digital; articles
Studies were conducted on two soil types to determine whether variations in level of aggregation, induced by adding wheat straw were accompanied by significant changes in the polysaccharide content of the soils. The addition ...
Effect of soil moisture stress on uptake and recovery of tagged nitrogen by wheat
Author(s):Paul, E. A.; Myers, R. J. K.
Date Issued:1971-02
Format:born digital; articles
Labelled 15NH4NO3 was used in a growth chamber to study the effect of moisture stress on the utilization of nitrogen by wheat. This made it possible to determine the recovery of nitrogen (N) in the soil-plant system of two ...
Carbon economy of soybean-rhyzobium-glomus associations
Author(s):Paul, E. A.; Harris, D.; Pacovsky, R. S.
Date Issued:1985-11
Format:born digital; articles
Carbon uptake and allocation in plants that were largely dependent on microbial symbionts for N and P was compared to that in plants given inorganic fertilizer. Soybeans (Glycine max L. Merr.) were grown in sterilized soil ...
Effects of fertilizer N and soil moisture on mineralization, N recovery and A-values, under spring wheat grown in small lysimeters
Author(s):Paul, E. A.; Campbell, C. A.
Date Issued:1978-02
Format:born digital; articles
The influence of rate of fertilizer N and soil moisture on N uptake by spring wheat, N mineralization, A-values and N recovery was determined in small lysimeters on stubble land by means of 15N-labelled KNO3. Net mineralization ...
Effect of carbon additions on soil labile inorganic, organic and microbially held phosphate
Author(s):Chauhan, B. S.; Stewart, J. W. B.; Paul, E. A.
Date Issued:1979-11
Format:born digital; articles
Investigations of the rate of P movement between soil inorganic, organic and biomass P compartments were carried out to clarify aspects of P cycling in soil systems. Organic carbon, as dried grass (33% C, 0.11% P) and ...
Comparison of humic fractions of Chernozemic and Luvisolic soils by elemental analyses, UV and ESR spectroscopy, A
Author(s):Paul, E. A.; Anderson, D. W.; Russell, D. B.; St. Arnaud, R. J.
Date Issued:1974-11
Format:born digital; articles
The Ah horizons of a Brown–Dark Brown–Black–Dark Gray–Gray Luvisolic sequence of Canadian grassland and forest soils were studied. Clay-associated humus was present in greater proportions in the grassland than in forest ...
Effect of various clover management practices on gaseous N losses and mineral N accumulation, The
Author(s):Aulakh, M. S.; Rennie, D. A.; Paul, E. A.
Date Issued:1963-08
Format:born digital; articles
A 2-yr field study was carried out to assess gaseous losses of N as N2O + N2 from two Black Chernozemic soils, where during year 1 wheat was underseeded to clover and in year 2, the clover in late June was (a) green-manured ...
Gaseous nitrogen losses from cropped and summer-fallowed soils
Author(s):Aulakh, M. S.; Rennie, D. A.; Paul, E. A.
Date Issued:1982-02
Format:born digital; articles
A study designed to assess gaseous losses of N as N2O and N2 from soils of conventional till fields seeded to wheat in the Chernozemic soil region of Saskatchewan, together with limited supporting laboratory investigations, ...