Effect of Zeolite, Femur and Lignite Application Rates on Soil Hydraulic Properties and Fertility of Sandy and Clay Soils at Semi-arid Climate

Author(s):  
Marwa Ayari ◽  
Abdelkrim Charef ◽  
Rim Azouzi ◽  
Nouha Khiari ◽  
Moncef Ben Sassi
2021 ◽  
pp. e00475
Author(s):  
S. Dharumarajan ◽  
M. Lalitha ◽  
Cecil Gomez ◽  
R. Vasundhara ◽  
B. Kalaiselvi ◽  
...  

2004 ◽  
Vol 8 (6) ◽  
pp. 1200-1209 ◽  
Author(s):  
M. Tombul ◽  
Z. Akyürek ◽  
A. Ünal Sorman

Abstract. Spatial and temporal variations in soil hydraulic properties such as soil moisture q(h) and hydraulic conductivity K(q) or K(h), may affect the performance of hydrological models. Moreover, the cost of determining soil hydraulic properties by field or laboratory methods makes alternative indirect methods desirable. In this paper, various pedotransfer functions (PTFs) are used to estimate soil hydraulic properties for a small semi-arid basin (Kurukavak) in the north-west of Turkey. The field measurements were a good fit with the retention curve derived using Rosetta SSC-BD for a loamy soil. To predict parameters to describe soil hydraulic characteristics, continuous PTFs such as Rosetta SSC-BD (Model H3) and SSC-BD-q33q1500 (Model H5) have been applied. Using soil hydraulic properties that vary in time and space, the characteristic curves for three soil types, loam, sandy clay loam and sandy loam have been developed. Spatial and temporal variations in soil moisture have been demonstrated on a plot and catchment scale for loamy soil. It is concluded that accurate site-specific measurements of the soil hydraulic characteristics are the only and probably the most promising method to progress in the future. Keywords: soil hydraulic properties, soil characteristic curves, PTFs


2019 ◽  
Vol 116 (7) ◽  
pp. 1237 ◽  
Author(s):  
S. Dharumarajan ◽  
Rajendra Hegde ◽  
M. Lalitha ◽  
B. Kalaiselvi ◽  
S. K. Singh

Soil Research ◽  
1996 ◽  
Vol 34 (1) ◽  
pp. 69 ◽  
Author(s):  
JA Holt ◽  
KL Bristow ◽  
JG Mcivor

A grazing experiment was used to examine the effects of high grazing pressure on soil Acari populations, and on termite populations and activity, at two sites in semi-arid north Queensland. Changes in soil hydraulic properties were also examined. Our investigations have shown that Acari populations were significantly lower in the heavily grazed treatments at one of the sites. Termite species diversity and activity were significantly lower in the heavily grazed treatments than in the lightly grazed treatments at both sites. The surface soils also had significantly lower steady-state how rates and hydraulic conductivities in the heavily grazed treatments than in the lightly grazed treatments. The deterioration in soil hydraulic properties in the heavily grazed treatments appears to be associated with both increased trampling by cattle and decreased termite activity in the top 25 mm of soil. The surface and near surface galleries constructed by detritiverous termites therefore have an important function in water movement in these semi-arid soils.


2002 ◽  
Vol 66 (1) ◽  
pp. 57 ◽  
Author(s):  
M. H. Young ◽  
A. Karagunduz ◽  
J. Šimůnek ◽  
K. D. Pennell

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