Interactive effects of wheel-traffic and tillage system on soil carbon and nitrogen.

Lee W.J.; Wood C.W.; Reeves D.W.; Entry J.A.; Raper R.L.

Interactive effects of wheel-traffic and tillage system on soil carbon and nitrogen.

1996

Lee W.J. | Wood C.W. | Reeves D.W. | Entry J.A. | Raper R.L.

Wheel-traffic induced soil compaction has been shown to limit crop productivity, and its interaction with tillage method could affect soil nutrient transformations. A study was conducted during 1993-1994 to determine interactive effects of tillage method (conventional tillage and no-tillage) and wheel-traffic (traffic and no traffic) on soil carbon (C) and nitrogen (N) at a long-term (initiated 1987) research site at Shorter, Alabama. The cropping system at this study site is a corn (Zea mays L.) - soybean [Glycine max (L.) Merr] rotation with crimson clover (Trifolium incarnatum L.) as a winter cover crop. Soil organic C, total N, and microbial biomass carbon (MBC) were not significantly affected by six years of traffic and tillage treatments. However, conventional tillage compared to no-tillage almost doubled the amount of CO2-C respired over the entire observation period and during April 1994 field operations. Soil respiration was stimulated immediately after application of wheel-traffic, but nontrafficked soils produced greater amounts of CO2-C compared to trafficked soils during other periods of observation. Nitrogen mineralization was significantly lower from no-tillage-trafficked soils compared to conventional tillage-trafficked and no-tillage-nontrafficked soils for the 1993 growing season. A laboratory incubation indicated the presence of relatively easily mineralizable N substrates from conventional tillage-trafficked soil compared to conventional tillage-nontrafficked and no-till-trafficked soils. For the coarse textured soil used in this study it appears that conventional tillage in combination with wheel-traffic may promote the highest levels of soil microbial activity.

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Mots clés AGROVOC

azote biologie du sol biomasa biomass biomasse carbon carbon cycle carbone carbono ciclo del carbono coastal soils compactage du sol cycle du carbone flora del suelo flore du sol glycine max labranza nitrogen nitrogen content nitrogen cycle rotation culturale rotational cropping roue ruedas soil biology soil compaction soil flora soil organic matter sol littoral suelo costero teneur en azote textural soil types tillage tipos texturales de suelos travail du sol trifolium incarnatum type de sol textural wheels zea mays zero tillage

Informations bibliographiques

Publié dans

Communications in soil science and plant analysis

Volume 27 ISSN 0010-3624

Pagination

v.3027-3043(18/20)

D'autres materias

Cycle de l' azote; Alabama eua; Alabama usa; Compactacion del suelo; Nitrogeno; Matiere organique du sol; Materia organica del suelo; Cero labranza; Ciclo del nitrogeno; Non travail du sol; Biologia del suelo; Rotacion de cultivos; Contenido de nitrogeno; Alabama eu

Langue

anglais

Note

references. AVAILABILITY: US (DNAL S590.C63).

Type

Journal Article; Journal Part

Source

Communications-in-soil-science-and-plant-analysis (USA). (1996). v. 27(18/20) p. 3027-3043.

Auteur institutionnelle

Auburn University, AL.

Sur AGRIS depuis: 2012-11-15

Format: AGRIS AP

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Interactive effects of wheel-traffic and tillage system on soil carbon and nitrogen.

1996

Mots clés AGROVOC

Informations bibliographiques