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  • 1
    Electronic Resource
    Electronic Resource
    Differential effect of carbon sources on nitrogen transformation in Hawaiian soils (1972)
    Springer
    Plant and soil 36 (1972), S. 529-537 
    Details
    ISSN: 1573-5036
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Mineralization of native N was curtailed by addition of carbon sources in all soils tested. A readily available energy source, sucrose, accelerated and increased the immobilization of native as well as added N more than a slowly available energy source, sugar cane bagasse. Addition of N as ammonium sulfate increased CO2 production in only one out of five soils when no energy source was added. With energy source addition, N addition enhanced CO2 production in most soils. Without any treatment, the immobilization of added N was related to the C:N ratio of the soil; maximum immobilization occurred in the soil with the widest C:N ratio.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01373504
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Effects of sugarcane trash and pineapple residue incorporation on soil nitrogen, pH and redox potential (1976)
    Springer
    Plant and soil 44 (1976), S. 209-218 
    Details
    ISSN: 1573-5036
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Sugarcane trash and pineapple residue, in a finely ground state, were mixed with soil at different levels with and without nitrogen fertilization. The nitrogen treatments received 112 kg N/ha as ammonium sulfate. The samples were incubated for different lengths of time (up to 16 weeks) and analyzed for total, ammonium, nitrate and nitrite nitrogen, pH and redox potential. There was no noticeable loss of nitrogen from the samples due to denitrification. The concentration of ammonium and nitrate nitrogen remained very low throughout the incubation study, probably due to immobilization by soil microflora. After 12 weeks, there was some indication of the release of mineral nitrogen from immobilized reserves. The redox potential was found to be between 400–600 mv during this study and nitrates became unstable below 400 mv redox potential.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00016968
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Differential effect of carbon sources on nitrogen transformation in Hawaiian soils (1972)
    Springer
    Plant and soil 36 (1972), S. 529-537 
    Details
    ISSN: 1573-5036
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Mineralization of native N was curtailed by addition of carbon sources in all soils tested. A readily available energy source, sucrose, accelerated and increased the immobilization of native as well as added N more than a slowly available energy source, sugar cane bagasse. Addition of N as ammonium sulfate increased CO2 production in only one out of five soils when no energy source was added. With energy source addition, N addition enhanced CO2 production in most soils. Without any treatment, the immobilization of added N was related to the C:N ratio of the soil; maximum immobilization occurred in the soil with the widest C:N ratio.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01373504
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Effect of temperature on nitrogen transformation in Hawaiian soils (1973)
    Springer
    Plant and soil 38 (1973), S. 177-189 
    Details
    ISSN: 1573-5036
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary In a field experiment soil samples buried at the warmer temperature regime nitrified added ammonium faster than soils buried at the cooler temperature regime. Nitrification occurred more rapidly under both regimes in a soil which had developed in a warm climatic zone than in two other soils developed under cooler conditions. The rate of nitrification of added ammonium in soils incubated at 5, 15, 25 and 40°C in the laboratory increased with increase in the temperature up to 25°C in three out of four soils. In the fourth soil nitrification was as active at 40°C as at 25°C. The temperature range for appreciable nitrification to occur in a soil was related to the environmental conditions where the soil was formed. Mineralization of organic nitrogen occurred to a greater extent at 40°C than at three lower incubating temperatures of 5, 15, and 25°C. Rapid and active mineralization was associated with high organic matter and C/N ratio in soils
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00011225
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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