Evaluating Physical Condition of Kumamoto Soil Based on the “Non —Limiting Water Range” Concept

DOI
  • OSOZAWA Seiko
    Division of Soil Science, National Institute of Agro — Environmental Science
  • Kozai Shin
    Kumamoto Prefectural Agricultural Research Center
  • Kubota Toru
    Division of Soil Science, National Institute of Agro — Environmental Science

Bibliographic Information

Other Title
  • 「根生育非制限有効水分域」による熊本県主要畑土壌の物理的評価

Description

Soil Physical Properties related to root growth have been diagnosed by measuring separately air porosity, available water, gas diffusion, mechanical impedance etc. However, these factors interrelatedly and affect crop growth. The optimum physical condition for crop grow th may be that non- limited by soil water, aeration, and mechanical resistance. NLWR., proposed by Letey, seems superior diagnosis of soil physical conditions because of considering these factors comprehensively. These relationships were demonstrated using I)/Do 0.02 and soil strength 12kgf/cm2 as limiting values with main upland soils of Kumamoto prefecture. As the results, reasonable correspondance between N.LWR and experiential productivity.and correlation (r=0.71)between NLWR water content and root length of wheat were found.

Journal

Details 詳細情報について

  • CRID
    1390853598119911040
  • NII Article ID
    130008140008
  • DOI
    10.34467/jssoilphysics.60.0_6
  • ISSN
    24352497
    03876012
  • Text Lang
    ja
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

Report a problem

Back to top