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Temperature effects on C- and N-mineralization from vegetable crop residues

Stefaan De Neve (UGent) , Jean Pannier (UGent) and Georges Hofman (UGent)
(1996) PLANT AND SOIL. 181(1). p.25-30
Author
Organization
Abstract
Net N-mineralization and nitrification from soil organic matter and from vegetable crop residues (leaf-blades of cauliflower and stems of red cabbage) were measured at 4 temperatures during aerobic incubation in the laboratory. C-mineralization from leaf-blades of cauliflower was monitored at 3 different temperatures. N-mineralization from soil organic matter was best described by zero order kinetics N(t)=kt whereas N- and C-mineralization from the crop residues were described by single first order kinetics. Stems of red cabbage mineralized much more slowly than leaf-blades of cauliflower. S-shaped functions were fitted to the relationship between the rate constants of both C and N-mineralization and temperature. The rate parameter kappa of the S-shaped function reflects the temperature dependence of the mineralization rate k. The parameter kappa for N-mineralization of the stem material (kappa=5.36) was significantly higher than for the leaf-blades (kappa=3.38), indicating that there is a strong interaction between temperature and resistance to degradation in the soil. N-mineralization from soil organic matter was least sensitive to temperature (kappa=2.63). Temperature dependence of nitrification was not significantly different from mineralization over the temperature range considered. Rate constants for C-mineralization of cauliflower leaf-blades were higher than for N-mineralization, but the temperature dependence of the rate constants was not significantly different for both processes.
Keywords
crop residues, C-mineralization, incubation, N-mineralization, temperature, NITROGEN MINERALIZATION, STRAW DECOMPOSITION, SOIL-TEMPERATURE, MOISTURE, KINETICS

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Chicago
De Neve, Stefaan, Jean Pannier, and Georges Hofman. 1996. “Temperature Effects on C- and N-mineralization from Vegetable Crop Residues.” Plant and Soil 181 (1): 25–30.
APA
De Neve, Stefaan, Pannier, J., & Hofman, G. (1996). Temperature effects on C- and N-mineralization from vegetable crop residues. PLANT AND SOIL, 181(1), 25–30. Presented at the 8th Nitrogen workshop on Progress in Nitrogen Cycling Studies.
Vancouver
1.
De Neve S, Pannier J, Hofman G. Temperature effects on C- and N-mineralization from vegetable crop residues. PLANT AND SOIL. 1996;181(1):25–30.
MLA
De Neve, Stefaan, Jean Pannier, and Georges Hofman. “Temperature Effects on C- and N-mineralization from Vegetable Crop Residues.” PLANT AND SOIL 181.1 (1996): 25–30. Print.
@article{189897,
  abstract     = {Net N-mineralization and nitrification from soil organic matter and from vegetable crop residues (leaf-blades of cauliflower and stems of red cabbage) were measured at 4 temperatures during aerobic incubation in the laboratory. C-mineralization from leaf-blades of cauliflower was monitored at 3 different temperatures. N-mineralization from soil organic matter was best described by zero order kinetics N(t)=kt whereas N- and C-mineralization from the crop residues were described by single first order kinetics. Stems of red cabbage mineralized much more slowly than leaf-blades of cauliflower. S-shaped functions were fitted to the relationship between the rate constants of both C and N-mineralization and temperature. The rate parameter kappa of the S-shaped function reflects the temperature dependence of the mineralization rate k. The parameter kappa for N-mineralization of the stem material (kappa=5.36) was significantly higher than for the leaf-blades (kappa=3.38), indicating that there is a strong interaction between temperature and resistance to degradation in the soil. N-mineralization from soil organic matter was least sensitive to temperature (kappa=2.63). Temperature dependence of nitrification was not significantly different from mineralization over the temperature range considered. Rate constants for C-mineralization of cauliflower leaf-blades were higher than for N-mineralization, but the temperature dependence of the rate constants was not significantly different for both processes.},
  author       = {De Neve, Stefaan and Pannier, Jean and Hofman, Georges},
  issn         = {0032-079X},
  journal      = {PLANT AND SOIL},
  keyword      = {crop residues,C-mineralization,incubation,N-mineralization,temperature,NITROGEN MINERALIZATION,STRAW DECOMPOSITION,SOIL-TEMPERATURE,MOISTURE,KINETICS},
  language     = {eng},
  location     = {Ghent, Belgium},
  number       = {1},
  pages        = {25--30},
  title        = {Temperature effects on C- and N-mineralization from vegetable crop residues},
  url          = {http://dx.doi.org/10.1007/BF00011288},
  volume       = {181},
  year         = {1996},
}

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