Titre du document / Document title

Comparison of conventional and no-tillage corn and soybean production on runoff and erosion in the southeastern US Piedmont

Auteur(s) / Author(s)

RACZKOWSKI C. W. ⁽¹⁾ ; REYES M. R. ⁽¹⁾ ; REDDY G. B. ⁽¹⁾ ; BUSSCHER W. J. ⁽²⁾ ; BAUER P. J. ⁽²⁾ ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

⁽¹⁾ Department of Natural Resources and Environmental Design at North Carolina A&T State University, Greensboro, North Carolina, ETATS-UNIS
⁽²⁾ USDA Agricultural Research Service at the Soil, Water, and Plant Research Center, Florence, South Carolina, ETATS-UNIS

Résumé / Abstract

Soil erosion on southern Piedmont soils remains a problem without application of sound conservation practices. This study was conducted to compare a no-tillage (NT) system with a conventional-tillage (CT) system in row-cropped land under natural rainfall conditions for six continuous years. Runoff and soil loss were continuously monitored from May 1995 to April 2001 from four erosion plots (7.3 m x 12.2 m [24 ft x 40 ft]) in CT and four plots in NT under a corn (Zea mays L.)-soybean (Glycine max L.) rotation in a Mecklenburg sandy clay loam and Enon clay loam (fine mixed, active, thermic, Ultic Hapludalfs) at a Piedmont location. Runoff was significantly less for NT than for CT in three study years; in the other three years no differences between treatments where found. The NT six-year runoff average was 33% lower than the six-year runoff average of CT. The tolerable soil loss level of 7.0 Mg ha^-1 y^-1 (3.1 tn ac^-1 yr^-1) was exceeded in CT in four study years, while annual NT losses were always below 7.0 Mg ha^-1 y^-1 The six-year soil loss average was 74.7 Mg ha^-1 (33.3 tn ac^-1) and 2.6 Mg ha^-1 (1.2 tn ac^-1) for CT and NT, respectively. In CT, most of the soil lost during the six-year study period occurred during rain storms of high intensity. No-till was highly effective at protecting against soil loss during these rain storms.

Revue / Journal Title

Journal of soil and water conservation   ISSN 0022-4561   CODEN JSWCA3 

Source / Source

2009, vol. 64, n^o1, pp. 53-60 [8 page(s) (article)] (3/4 p.)

Langue / Language

Anglais

Editeur / Publisher

Soil and Water Conservation Society, Ankeny, IA, ETATS-UNIS  (1946) (Revue)

Mots-clés anglais / English Keywords

Grain legume ; Cereal crop ; America ; North America ; Dicotyledones ; Leguminosae ; Spermatophyta ; Angiospermae ; Monocotyledones ; Gramineae ; Resource management ; Southeast ; United States ; Glycine max ; Zea mays ; Soil erosion ; Runoff water ; Infiltration ; Crop residues ; Conventional tillage ; Conservation tillage ; Runoff ; Water erosion(soil) ; Zero tillage ;

Mots-clés français / French Keywords

Légumineuse grain ; Plante céréalière ; Amérique ; Amérique du Nord ; Dicotyledones ; Leguminosae ; Spermatophyta ; Angiospermae ; Monocotyledones ; Gramineae ; Gestion ressources ; Sud est ; Etats-Unis ; Glycine max ; Zea mays ; Erosion sol ; Eau ruissellement ; Infiltration ; Résidu de récolte ; Travail du sol conventionnel ; Technique culturale antiérosive ; Ruissellement eau sol ; Erosion hydrique sol ; Non travail sol ;

Mots-clés espagnols / Spanish Keywords

Leguminosa grano ; Planta cerealista ; America ; America del norte ; Dicotyledones ; Leguminosae ; Spermatophyta ; Angiospermae ; Monocotyledones ; Gramineae ; Gestión recursos ; Sureste ; Estados Unidos ; Glycine max ; Zea mays ; Erosión suelo ; Escorrentía ; Infiltración ; Residuos de cosechas ; Labranza convencional ; Técnica cultural antierosiva ; Escorrentía suelo ; Erosión hídrica suelo ; Cero labranza ;

Mots-clés d'auteur / Author Keywords

conservation tillage ; conventional tillage ; crop residue ; infiltration ; no-till ; runoff ; soil erosion ;

Localisation / Location

INIST-CNRS, Cote INIST : 8194, 35400018546706.0160