• JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
 
  Bookmark and Share
 
 
Master's Dissertation
DOI
https://doi.org/10.11606/D.11.1980.tde-20210919-102521
Document
Author
Full name
Mozart Martins Ferreira
Institute/School/College
Knowledge Area
Date of Defense
Published
Piracicaba, None
Supervisor
Title in Portuguese
Ponto de inflexão da curva característica de umidade como estimativa da capacidade de campo do solo
Keywords in Portuguese
CAPACIDADE DE CAMPO DO SOLO
UMIDADE DO SOLO
Abstract in Portuguese
Foram determinados, com auxílio da função ?Spline?, os pontos de inflexão das curvas características de umidade obtidas de diversas posições dos perfis dos solos Latossolo Roxo distrófico, série Sertãozinho e série Luiz de Queiroz, utilizando os dados apresentados por SCARDUA (1972) e FREIRE (1975). Realizou-se estudos de correlações entre os teores de umidade na capacidade de campo, no ponto de inflexão, à 1/3 atm, à 1/10 atm e à 0,06 atm. Os resultados mostraram que para os solos Latossolo Roxo distrófico e série Sertãozinho, o grau de umidade no ponto de inflexão fornece uma razoável estimativa de suas respectivas capacidades de campo. Para a série Luiz de Queiroz, a capacidade de campo é melhor representada pela retenção a 1/3 atm. Observou-se também que o potencial de matriz correspondente a capacidade de campo varia com a posição considerada no perfil, sendo essa variação dependente da uniformidade textural do mesmo.
Title in English
Not available
Abstract in English
The flex point of soil moisture retention curves were determined by means of the spline function. These curves were based on data previously published by SCÁRDUA (1972) and FREIRE (1975) and are representative of a dystrophic ?Latosol Roxo? profile and ?Sertãozinho? and ?Luiz de Queiroz? series. The study consisted mainly of a study to determine the correlation between moisture retention at field capacity and those at the flex point, 1/3 atm, 1/ 10 atm and 0,06 atm, respectively. The analysis of the results obtained showed that for the dystrophic ?Latosol Roxo? and Sertãozinho series moisture content at the flex point of the water retention curve is a reasonable estimate of their respective field capacities, whereas for Luiz de Queiroz series retentions at 1/3 atm appeared to be a better estimate. It was also observed that the matric potential at field capacity varies with the position considered in the profile and that this variation depends on the textural uniformity of the profile.
 
WARNING - Viewing this document is conditioned on your acceptance of the following terms of use:
This document is only for private use for research and teaching activities. Reproduction for commercial use is forbidden. This rights cover the whole data about this document as well as its contents. Any uses or copies of this document in whole or in part must include the author's name.
Publishing Date
2021-09-19
 
WARNING: Learn what derived works are clicking here.
All rights of the thesis/dissertation are from the authors
CeTI-SC/STI
Digital Library of Theses and Dissertations of USP. Copyright © 2001-2022. All rights reserved.