The effects of soil organic matter on soil water retention and plant water use in a meadow of the Sierra Nevada, CA

2016 ◽  
Vol 31 (4) ◽  
pp. 891-901 ◽  
Author(s):  
Kyle J. Ankenbauer ◽  
Steven P. Loheide
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Soil Water ◽  
Water Use ◽  
Sierra Nevada ◽  
Water Retention ◽  
Plant Water ◽  
Soil Water Retention ◽  
Plant Water Use

Functional Differences in Soil Water Pools: a New Perspective on Plant Water Use in Water-Limited Ecosystems

2008 ◽  
pp. 397-422 ◽  
Author(s):  
Ronald J. Ryel ◽  
Carolyn Y. Ivans ◽  
Michael S. Peek ◽  
A. Joshua Leffler
Keyword(s):  
Soil Water ◽  
Water Use ◽  
Plant Water ◽  
Functional Differences ◽  
Plant Water Use ◽  
New Perspective

Influence of organic waste amendments on selected soil physical and chemical properties

1999 ◽  
Vol 79 (3) ◽  
pp. 501-504 ◽  
Author(s):  
B. J. Zebarth ◽  
G. H. Neilsen ◽  
E. Hogue ◽  
D. Neilsen
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Cation Exchange ◽  
Bulk Density ◽  
Soil Water ◽  
Cation Exchange Capacity ◽  
Water Retention ◽  
Organic Waste ◽  
Soil Bulk Density ◽  
Exchange Capacity

Sandy, infertile soils can benefit from the addition of organic waste amendments. Annual applications of organic wastes for as long as 4 yr increased soil organic matter content, decreased soil bulk density, and increased soil water retention of a coarse-textured soil. However, soil water-holding capacity was not necessarily increased, and there was a limited effect on soil cation exchange capacity. Key words: Cation exchange capacity, water retention, soil pH, soil organic matter, soil bulk density

scholarly journals Improvement of Economic Water Productivity of Cucumber by using Soil Water Retention Technology under Subsurface Trickle Irrigation System

2019 ◽  
Vol 26 (3) ◽  
pp. 68-72
Author(s):  
Fatima Sadoon Mushab ◽  
Sabah Anwer Almasraf
Keyword(s):  
Water Use Efficiency ◽  
Soil Water ◽  
Water Use ◽  
Water Retention ◽  
Root Zone ◽  
Irrigation System ◽  
Water Productivity ◽  
Trickle Irrigation ◽  
Soil Water Retention ◽  
Use Efficiency

Subsurface soil water retention (SWRT) is a recent technology for increasing the crop yield, water use efficiency and then the water productivity with less amount of applied water. The goal of this research was to evaluate the existing of SWRT with the influence of surface and subsurface trickle irrigation on economic water productivity of cucumber crop. Field study was carried out at the Hawr Rajab district of Baghdad governorate from October 1st, to December 31st, 2017. Three experimental treatments were used, treatment plot T1 using SWRT with subsurface trickle irrigation, plot T2 using SWRT with surface trickle irrigation, while plot T3 without using SWRT and using surface tickle irrigation system. The obtained results showed that the economic water productivity in plot T1 was greater than plots T2 and T3. The increasing value was about 65 % and 124 %, respectively. The benefit of the installing SWRT along with subsurface trickle irrigation in the crop root zone assisted to keep the water, nutrients and fertilizers during the root zone profile, improving the field water use efficiency and then the parameter of water productivity.

Relationship of soil water retention characteristics and soil properties: a case study from the Colombian Andes

2020 ◽  
pp. 1-10
Author(s):  
Clara Roa García ◽  
Sandra Brown ◽  
Maja Krzic ◽  
Les Lavkulich ◽  
María Cecilia Roa-García
Keyword(s):  
Organic Matter ◽  
Soil Water ◽  
Water Retention ◽  
Management Practices ◽  
Principal Component ◽  
Total Carbon ◽  
Soil Types ◽  
Soil Water Retention ◽  
Colombian Andes

Differences in soil water retention (SWR) characteristics between soil types and the factors driving those differences provide important information for land management, particularly in regions such as the Colombian Andes, which have limited water-storage infrastructure and where soils provide plant-available water and other ecosystem services. The objective of this study was to explore relationships between SWR and physical, chemical, and mineralogical properties of Andisols and Inceptisols through a case study of two watersheds in the Colombian Andes. This study identified a complex relationship between total carbon (TC), short-range order (SRO) minerals, and SWR. Both soil types had high SWR, with volumetric water content at permanent wilting point between 39% and 53%. Principal component analysis showed association of SWR with TC, SRO minerals, and % clay in both soil types. The Andisols of this study were coarse textured, allophanic (rich in allophane and imogolite — up to 17% in the B horizon), and with up to 15% TC in the A horizon. In contrast, the Inceptisols were fine textured (>30% clay) and higher in ferrihydrite than the Andisols. The formation of organo-metallic complexes was observed in A horizons; however, TC was lower under pasture than forest in both soil types. The addition of organic matter to soils with SRO minerals, such as the soils of this study, may foster the formation of organo-metallic complexes, stabilize soil C, and enhance SWR. Consequently, both study sites may benefit from management practices that increase soil organic matter.

WATER RETENTION EQUATIONS AND THEIR RELATIONSHIP TO SOIL ORGANIC MATTER AND PARTICLE SIZE DISTRIBUTION FOR DISTURBED SAMPLES

1983 ◽  
Vol 63 (2) ◽  
pp. 291-302 ◽  
Author(s):  
R. DE JONG ◽  
C. A. CAMPBELL ◽  
W. NICHOLAICHUK
Keyword(s):  
Organic Matter ◽  
Water Content ◽  
Soil Water ◽  
Water Retention ◽  
Water Retention Curve ◽  
Organic Carbon Content ◽  
Soil Water Retention ◽  
Canadian Prairies ◽  
Functional Relationships ◽  
Straight Line

Functional relationships between soil water content and water suction were examined and related to textural and organic carbon content data. Soil water retention curves between 5 and 10 000 kPa were determined on disturbed samples of 18 soils representing various soil Great Groups in the Canadian prairies. The best fit was obtained with a two-straight-line regression model. Correlation and regression analysis showed that texture was the main soil property influencing the shape and position of the water retention curve. Organic matter influenced primarily the water content at which a break in the curve occurred. Soil zone and cultivation history had little effect on water retention. Key words: Water retention, texture, organic matter, two-straight-line regression

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