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Denitrification, immobilization, and mineralization in nitrate limited and nonlimited residue-amended soil


, : Denitrification, immobilization, and mineralization in nitrate limited and nonlimited residue-amended soil. Soil Science Society Of America Journal. 59(1): 118-124

Although the use of cover crops and intercrops has been increasing, little information exists on effects these plant residues may have on soil microbial processes. Our objectives were to determine effects of several crop residues representing a range of C/N ratios (11.3-65.5) on mineralization, immobilization, denitrification, and dissimilatory NO3- reduction in Brookston clay loam with limiting and nonlimiting NO3- concentrations. Residues were obtained from two legumes, hairy vetch (HV; Vicia villosa L.) and red clover (RC; Trifolium pratense L.); two grasses, annual ryegrass (ARG; Lolium temulentum L.,) and reed canarygrass (RCG; Phalans arundinacea L.); and corn (Zea mays L.). Nitrate consumption and NH4+, NO2-, NO, and N2O production were measured in soil with 10 g residue kg-1 in a gas flow system. In soil without added NO3-, during a 5-d aerobic incubation, 86% of the existing NO3- was immobilized with RC, 66% with corn, 44% with HV and ARG, and 41% with RCG. Intense immobilization in the RC and corn treatments limited the amount of NO3- available for denitrification, whereas during the subsequent anaerobic phase, only HV, ARG, and RCG stimulated denitrification. The enhanced net immobilization with RC was surprising because the C/N ratio for this residue was relatively low (15:1). Ammonium production was greatest with the HV residue. Nitrate addition to HV-amended soil further increased NH4+ production with 91 mg N kg-1 being produced during a 5-d aerobic, 6-d anaerobic incubation. The nature of the residue-derived organic material is more important than simply the C/N ratio in regulating these microbial processes in these short-term incubations.

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Accession: 002590468

DOI: 10.2136/sssaj1995.03615995005900010019x

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Stayton, P.S.; Sligar, S.G., 1991: Structural microheterogeneity of a tryptophan residue required for efficient biological electron transfer between putidaredoxin and cytochrome P-450cam. The carboxy-terminal tryptophan of putidaredoxin, the Fe2S2.Cys4 iron-sulfur physiological redox partner of cytochrome P-450cam, is essential for maximal biological activity [Davies, M. D., Qin, L., Beck, J. L., Suslick, K. S., Koga, H., Horiuchi,...

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Glazko, G.V.; Rogozin, I.B.; Glazkov, M.V., 2001: Comparative study and prediction of DNA fragments associated with various elements of the nuclear matrix. Scaffold/matrix-associated region (S/MAR) sequences are DNA regions that are attached to the nuclear matrix, and participate in many cellular processes. The nuclear matrix is a complex structure consisting of various elements. In this paper we com...

Chesterton, L.S.; Foster, N.E.; Wright, C.C.; Baxter, G.David.; Barlas, P., 2003: Effects of TENS frequency, intensity and stimulation site parameter manipulation on pressure pain thresholds in healthy human subjects. This study evaluated the effects of varying frequency, intensity and stimulation site, of transcutaneous electrical nerve stimulation (TENS) in an experimental model of pain. In a double-blind design 240 volunteers were randomised to one of six ex...

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Wesnousky S.; Scholz C.H., 1979: Shield drag; a possible contributor to the intraplate stress field of North America. Eos, Transactions, American Geophysical Union 60(46): 955

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