Physical fertility of soils and the drainage efficiencies of upland field

Alluvial soil in Fukaya, locating at a basin of Tone River in Saitama prefecture, has been perceived to be a good soil. Recently, however,some fields in this area were damaged and the drainage efficiency is being degraded. The objective of this study is to investigate and evaluate the physical ferti...

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Bibliographic Details
Published inTransactions of The Japanese Society of Irrigation, Drainage and Reclamation Engineering Vol. 1998; no. 195; pp. 465 - 476,a2
Main Authors Nakano, K. (Tokyo Univ. (Japan)), Miyazaki, T, Nakano, M
Format Journal Article
LanguageJapanese
Published The Japanese Society of Irrigation, Drainage and Rural Engineering 1998
Subjects
DRAINAGE
Drainage efficiency
DRENAJE
EFFICACITE
EFFICIENCY
EFICACIA
ESTRUCTURA DEL SUELO
FERMETE
FERTILIDAD DEL SUELO
FERTILITE DU SOL
FIRMEZA
FIRMNESS
Hardness
Hydraulic conductivity
INFILTRACION
INFILTRATION
Physical fertility
SOIL FERTILITY
SOIL STRUCTURE
SOL DE MOYENNE ALTITUDE
Stability of aggregates
STRUCTURE DU SOL
SUELO DE ALTURA
Upland field
UPLAND SOILS
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Summary:Alluvial soil in Fukaya, locating at a basin of Tone River in Saitama prefecture, has been perceived to be a good soil. Recently, however,some fields in this area were damaged and the drainage efficiency is being degraded. The objective of this study is to investigate and evaluate the physical fertility of the field in the viewpoint of the drainage efficiency and the physical and chemical properties of the soil including the aggregate stability. The pattern of hardness profile and the dispersion of the hydraulic conductivity in each field, and the stability of aggregates influence the drainage efficiency. The combination of these factors and other physical and chemical properties of soils also affected the drainage efficiency. Physically fertile fields were classified into two types; the first, all the properties of the soil have advantage for good drainage and, secondly, the favorable properties of soils compensated the unfavorable properties of them. On the other hand, soils in physically unfertile fields were either possessing worse properties or exceeding the unfavorable properties to their favorable properties. The balance of each physical property of soils, as well as their spatial heterogeneity, was crucial to keep them physically fertile
Bibliography:P33
1998006492
ISSN:0387-2335
1884-7234
DOI:10.11408/jsidre1965.1998.465