About Us | Help Videos | Contact Us | Subscriptions

Members of ASA, CSSA, and SSSA: Due to system upgrades, your subscriptions in the digital library will be unavailable from May 15th to May 22nd. We apologize for any inconvenience this may cause, and thank you for your patience. If you have any questions, please call our membership department at 608-273-8080.


Institutional Subscribers: Institutional subscription access will not be interrupted for existing subscribers who have access via IP authentication, though new subscriptions or changes will not be available during the upgrade period. For questions, please email us at: queries@dl.sciencesocieties.org or call Danielle Lynch: 608-268-4976.



This article in SSSAJ

  1. Vol. 52 No. 3, p. 804-808
    Received: Apr 3, 1987

    * Corresponding author(s):
Request Permissions


Soil and Plant Response to Three Subsoiling Implements

  1. W. J. Busscher ,
  2. D. L. Karlen,
  3. R. E. Sojka and
  4. K. P. Burnham
  1. Coastal Plains Soil and Water Conservation Res. Ctr. USDA-ARS, P.O. Box 3039, Florence, SC 29501-3039
    Soil and Water Res. Unit, USDA-ARS, Dep. of Agronomy, Iowa State Univ., Ames, IA
    Snake River Soil and Water Conservation Res. Ctr. USDA-ARS, Kimberly, ID
    USDA-ARS, Statistics Dep., North Carolina State Univ., RaIeigh, NC



Many Southeastern Coastal Plain soils require deep (>0.45 m) inrow tillage or subsoiling to disrupt dense tillage/traffic pans and/or eluvial (E) horizons. Three subsoiling implements [Super Seeder (SS), ParaTill (PT), and Kelly (KE)] were compared on Norfolk (Typic Paleudult) loamy sand to assess their effectiveness in developing and maintaining a proper rooting environment for corn (Zea mays L.). Soil strength (cone index) for the implements was evaluated with and without conventional surface tillage (disking). All three subsoiling implements effectively disrupted the E horizon regardless of surface tillage, but the 67% stand establishment in nondisked treatments was significantly lower than for disked treatments (92%). However, yields were not significantly different. Significant differences in soil strength were measured among subsoiling implements at the beginning of each growing season. In 1985 mean profile soil strength was lower (P ≤ 0.10) for SS and PT than for KE. In 1986, soil strength was lower (P ≤ 0.10) for SS than either PT or KE. The consistent difference between SS and KE occurred because SS disrupted a larger area than the thinner-shanked KE. Nondisked treatments had mean soil strength that was 0.32 MPa lower within the row than disked treatments, but disked treatments had mean soil strength that was 0.37 MPa lower between the rows. Soil strength results suggest that Coastal Plain soils, which have been subsoiled, are less likely to restrict root development regardless of implement with, or without, prior surface tillage.

Joint contribution from the Coastal Plains Soil and Water Conservation Res. Ctr. USDA-ARS and the South Carolina Agric. Exp. Stn. Clemson, SC.

  Please view the pdf by using the Full Text (PDF) link under 'View' to the left.

Copyright © . Soil Science Society of America