scholarly journals The effects of long-term fertilizations on soil hydraulic properties vary with scales

2021 ◽  
Vol 593 ◽  
pp. 125890
Author(s):  
Xiaoxian Zhang ◽  
Andrew L. Neal ◽  
John W. Crawford ◽  
Aurelie Bacq-Labreuil ◽  
Elsy Akkari ◽  
...  
Keyword(s):  
Hydraulic Properties ◽  
Soil Hydraulic Properties ◽  
Soil Hydraulic

Impact on soil hydraulic properties resulting from irrigating saline–sodic soils with low salinity water

2002 ◽  
Vol 42 (3) ◽  
pp. 273 ◽  
Author(s):  
M. G. Bethune ◽  
T. J. Batey
Keyword(s):  
Hydraulic Properties ◽  
Soil Permeability ◽  
Soil Hydraulic Properties ◽  
Sodic Soils ◽  
Winter Rainfall ◽  
Low Salinity ◽  
Low Salinity Water ◽  
Salinity Water ◽  
Soil Hydraulic

Irrigation-induced salinity is a serious problem facing irrigated areas in the Murray–Darling Basin of Australia. Groundwater pumping with farm re-use for irrigation is a key strategy for controlling salinity in these irrigation areas. However, the re-use of highly saline–sodic groundwater for irrigation leads to accumulation of sodium in the soil profile and can result in sodic soils. Leaching of saline–sodic soils by winter rainfall and low salinity irrigation waters are 2 management scenarios likely to exacerbate sodicity problems. Characteristic to sodic soils is poor soil structure and potentially reduced soil permeability. Two indicators of soil permeability are infiltration rate and hydraulic conductivity. A replicated plot experiment was conducted to examine the long-term impact of irrigation with saline–sodic water on soil permeability. High levels of soil sodicity (ESP up to 45%) resulted from 10 years of saline irrigation. Over this period, leaching by winter rainfall did not result in long-term impacts on soil hydraulic properties. Measured soil hydraulic properties increased linearly with the salinity of the applied irrigation water. Leaching by irrigating with low salinity water for 13 months decreased soil salinity and sodicity in the topsoil. The resulting reduction in steady-state infiltration indicates soil structural decline of the topsoil. This trial shows that groundwater re-use on pasture will result in high sodium levels in the soil. Sodicity-related soil structural problems are unlikely to develop where there is consistent groundwater irrigation of pasture. However, structural decline of these soils is likely following the cessation of groundwater re-use.

scholarly journals Assessing the cover crop effect on soil hydraulic properties by inverse modelling in a 10-year field trial

2018 ◽  
Author(s):  
José Luis Gabriel ◽  
Miguel Quemada ◽  
Diana Martín-Lammerding ◽  
Marnik Vanclooster
Keyword(s):  
Soil Water ◽  
Cover Crop ◽  
Hydraulic Properties ◽  
Water Retention ◽  
Soil Hydraulic Properties ◽  
Cover Cropping ◽  
Term Change ◽  
Soil Hydraulic ◽  
The Impact

Abstract. Cover cropping in agriculture is expected to enhance many agricultural and ecosystems functions and services. Yet, few studies are available allowing to evaluate the impact of cover cropping on the long term change of soil hydrologic functions. We assessed the long term change of the soil hydraulic properties due to cover cropping by means of a 10-year field experiment. We monitored continuously soil water content in non cover cropped and cover cropped fields by means of capacitance probes. We subsequently determined the hydraulic properties by inverting the soil hydrological model WAVE, using the time series of the 10 year monitoring data in the object function. We observed two main impacts, each having their own time dynamics. First, we observed an initial compaction as a result of the minimum tillage. This initial negative effect was followed by a more positive cover crop effect. The positive cover crop effect consisted in an increase of the soil micro- and macro-porosity, improving the structure. This resulted in a larger soil water retention capacity. This latter improvement was mainly observed below 20 cm, and mostly in the soil layer between 40 and 80 cm depth. This study shows that the expected cover crop competition for water with the main crop can be compensated by an improvement of the water retention in the intermediate layers of the soil profile. This may enhance the hydrologic functions of agricultural soils in arid and semiarid regions which often are constrained by water stress.

scholarly journals Effects of long-term soil and crop management on soil hydraulic properties for claypan soils

2010 ◽  
Vol 65 (6) ◽  
pp. 393-403 ◽  
Author(s):  
A. Mudgal ◽  
S. H. Anderson ◽  
C. Baffaut ◽  
N. R. Kitchen ◽  
E. J. Sadler
Keyword(s):  
Hydraulic Properties ◽  
Crop Management ◽  
Soil Hydraulic Properties ◽  
Soil Hydraulic

scholarly journals Long-term tillage impact on soil hydraulic properties

2017 ◽  
Vol 170 ◽  
pp. 38-42 ◽  
Author(s):  
Humberto Blanco-Canqui ◽  
Brian J. Wienhold ◽  
Virginia L. Jin ◽  
Marty R. Schmer ◽  
Leonard C. Kibet
Keyword(s):  
Hydraulic Properties ◽  
Soil Hydraulic Properties ◽  
Soil Hydraulic

scholarly journals Assessing the cover crop effect on soil hydraulic properties by inverse modelling in a 10-year field trial

2017 ◽  
Author(s):  
Jose Luis Gabriel ◽  
Miguel Quemada ◽  
Diana Martín-Lammerding ◽  
Marnik Vanclooster
Keyword(s):  
Soil Water ◽  
Cover Crop ◽  
Hydraulic Properties ◽  
Water Retention ◽  
Soil Hydraulic Properties ◽  
Cover Cropping ◽  
Term Change ◽  
Soil Hydraulic ◽  
The Impact

Abstract. Cover cropping in agriculture is expected to enhance many agricultural and ecosystems functions and services. Yet, few studies are available allowing to evaluate the impact of cover cropping on the long term change of soil hydrologic functions. We assessed the long term change of the soil hydraulic properties due to cover cropping by means of a 10-year field experiment. We monitored continuously soil water content in non cover cropped and cover cropped fields by means of capacitance probes. We subsequently determined the hydraulic properties by inverting the soil hydrological model WAVE, using the time series of the 10 year monitoring data in the object function. We observed two main impacts, each having their own time dynamics. First, we observed an initial compaction as a result of the minimum tillage. This initial negative effect was followed by a more positive cover crop effect. The positive cover crop effect consisted in an increase of the soil micro- and macro-porosity, improving the structure. This resulted in a larger soil water retention capacity. This latter improvement was mainly observed below 20 cm, and mostly in the soil layer between 40 and 80 cm depth. This study shows that the expected cover crop competition for water with the main crop can be compensated by an improvement of the water retention in the intermediate layers of the soil profile. This may enhance the hydrologic functions of agricultural soils in arid and semiarid regions which often are constrained by water stress.

Long-term effects of conventional and reduced tillage on soil structure, soil ecological and soil hydraulic properties

Geoderma ◽  
2018 ◽  
Vol 332 ◽  
pp. 10-19 ◽  
Author(s):  
Steffen Schlüter ◽  
Caroline Großmann ◽  
Julius Diel ◽  
Gi-Mick Wu ◽  
Sabine Tischer ◽  
...  
Keyword(s):  
Soil Structure ◽  
Hydraulic Properties ◽  
Reduced Tillage ◽  
Long Term Effects ◽  
Soil Hydraulic Properties ◽  
Soil Hydraulic
Sign in / Sign up

Export Citation Format

Share Document