Shadow Analysis Field Measurements Related to Soil Surface Rougness

Tarquis Alfonso, Ana Maria and García Moreno, Rosario and Diaz Alvarez, Maria Cruz and Paz González, Antonio and Vidal Vazquez, Eva and Saa Requejo, Antonio (2010). Shadow Analysis Field Measurements Related to Soil Surface Rougness. In: "19th World Congress of Soil Science, Soil Solutions for a Changing World", 01/08/2010 - 06/08/2010, Brisbane, Australia.. ISBN 978-0-646-53783-2.

Description

Title: Shadow Analysis Field Measurements Related to Soil Surface Rougness
Author/s:
  • Tarquis Alfonso, Ana Maria
  • García Moreno, Rosario
  • Diaz Alvarez, Maria Cruz
  • Paz González, Antonio
  • Vidal Vazquez, Eva
  • Saa Requejo, Antonio
Item Type: Presentation at Congress or Conference (Article)
Event Title: 19th World Congress of Soil Science, Soil Solutions for a Changing World
Event Dates: 01/08/2010 - 06/08/2010
Event Location: Brisbane, Australia.
Title of Book: DVD-ROM Proceedings of the 19th World Congress of Soil Science, Soil Solutions for a Changing World
Date: 2010
ISBN: 978-0-646-53783-2
Subjects:
Freetext Keywords: Shadow analysis, soil surface roughness, chain method, pin meter, erosion
Faculty: E.T.S.I. Agrónomos (UPM) [antigua denominación]
Department: Matemática Aplicada a la Ingeniería Agronómica [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

The present study aimed to fill the need for a reliable, low-cost and convenient method to measure soil surface roughness. Based on the interpretation of micro-topographic shadows, this procedure is primarily designed for use in the field. The principle underlying shadow analysis is the direct relationship between SSR and the shadows cast by soil structures under fixed sunlight conditions. The results obtained with this method were compared to the statistical indexes used to express field readings recorded by pin meter and chain set methods. The tests were conducted on 4-m 2 sandy clay loam plots divided into 1-m 2 subplots tilled with three different implements: chisel, tiller and roller. The highly significant correlation between the statistical indexes and shadow analysis results proved that both variability (CV) and dispersion (SD) are accommodated by the new method. The method also showed a good proportionality with the chain roughness (CR). The SSR obtained for the different methods is mainly related to the presence of aggregates. The shadow analysis simplifies the interpretation of soil surface roughness and shortens the time involved in field operations by a factor ranging from 4 to 20

More information

Item ID: 8104
DC Identifier: http://oa.upm.es/8104/
OAI Identifier: oai:oa.upm.es:8104
Deposited by: Memoria Investigacion
Deposited on: 16 Sep 2011 11:25
Last Modified: 20 Apr 2016 17:00
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