OSMOTIC PRESSURES OF NATIVE PLANTS OF SALINE SOIL IN SASKATCHEWAN

1966 ◽  
Vol 46 (5) ◽  
pp. 479-485 ◽  
Author(s):  
J. D. Dodd ◽  
R. T. Coupland
Keyword(s):  
Soil Moisture ◽  
Osmotic Pressure ◽  
Soil Solution ◽  
Dominant Species ◽  
Native Plants ◽  
Saline Soil ◽  
Saline Soils ◽  
Abundant Supply

Ranges of osmotic pressure of cell sap in 21 species of plants growing on saline soil in southern Saskatchewan are reported. These are related to salinity of soil and osmotic pressure of soil solution. The highest osmotic pressures are found in dominants of the most saline dry soils, and there is a decrease of osmotic pressure in the dominants of less saline soils. Some of the dominants of very saline soils have lower osmotic pressures than might be expected, apparently because of a more abundant supply of soil moisture near the center of some depressions. Depth of rooting of species tends to have a relationship to osmotic pressure with one shallow-rooted species having the highest value. The species associated with the dominants in all soils have considerably lower osmotic pressures than the dominant species. The effect of rainfall in reducing concentration of the soil solution was only evident in respect to a shallow-rooted species and not to a deep-rooted; the effect lasted only 4 days.

EFFECT OF MOISTURE CHANGE AND SALINITY ON THE Mg/Ca RATIO AND RATIO OF Ca/TOTAL CATIONS IN SOIL SOLUTIONS

1979 ◽  
Vol 59 (4) ◽  
pp. 439-443 ◽  
Author(s):  
M. R. CARTER ◽  
G. R. WEBSTER ◽  
R. R. CAIRNS
Keyword(s):  
Soil Moisture ◽  
Soil Solution ◽  
Saline Soils ◽  
Moisture Change ◽  
Soil Solutions ◽  
Effect Of Moisture ◽  
Cation Ratio

The magnitude of change of the Mg/Ca ratio and ratio of Ca/total cations were determined over the available moisture range in the soil solution of saline (Na, Mg and Ca sulfates) and non-saline soils. Estimates of the soil solution were obtained by displacement with ethanol. As the soil moisture declined in saline or near saline soils, the Mg/Ca ratio and Ca/total cation ratio increased and remained relatively stable, respectively. Saturation paste extracts were found to serve as an indicator to changes in the above ratios.

Responses to air temperature and soil moisture of growth of four dominant species on sand dunes of central Inner Mongolia

2008 ◽  
Vol 121 (5) ◽  
pp. 473-482 ◽  
Author(s):  
Yuanrun Zheng ◽  
Glyn M. Rimmington ◽  
Zhixiao Xie ◽  
Lei Zhang ◽  
Ping An ◽  
...  
Keyword(s):  
Soil Moisture ◽  
Air Temperature ◽  
Inner Mongolia ◽  
Dominant Species ◽  
Sand Dunes

scholarly journals The effects of soil moisture and salinity as functions of groundwater depth on wheat growth and yield in coastal saline soils

2019 ◽  
Vol 18 (11) ◽  
pp. 2472-2482 ◽  
Author(s):  
He ZHANG ◽  
Yan LI ◽  
Ya-li MENG ◽  
Nan CAO ◽  
Duan-sheng LI ◽  
...  
Keyword(s):  
Soil Moisture ◽  
Groundwater Depth ◽  
Growth And Yield ◽  
Saline Soils ◽  
Wheat Growth

scholarly journals Arsenic mobility in saline soil and its impact on plant growth

2017 ◽  
Vol 29 (2) ◽  
pp. 153-161
Author(s):  
Sayeda Sabrina Ali ◽  
Monira Begum ◽  
Muhammad Harunur Rashid ◽  
SM Imamul Huq
Keyword(s):  
Plant Growth ◽  
Saline Soil ◽  
Arsenic Concentration ◽  
Pot Experiment ◽  
Saline Soils ◽  
Arsenic Mobility ◽  
Incubation Study ◽  
Different Types ◽  
Experimental Soil

A study was conducted to investigate the mobility of arsenic in saline soil and its consequences on plant growth. Two different types of saline soils, S1 (2.0 dS/m) and S2 (5.06 dS/m), collected from the south-western part of Bangladesh were used for the experiment. There were two parts in the experiment, viz., in vitro incubation study and pot experiment. Arsenic at the rates of 0, 0.05 and 1.0 mg/l was applied to the soil with water and for plant as irrigation water. The soils under incubation were sequentially extracted with seven different extractants viz., distilled water, 1M NH4Cl, 0.01M CaCl2, 0.005M DTPA, 0.1M EDTA, 0.1M HCl and 1M HCl. A local variety of rice, BRRI 41 was grown on the experimental soil as the test crop for pot experiment. The elevated arsenic concentration in the growth medium caused higher accumulation of arsenic as well as sodium in the plant.Bangladesh J. Sci. Res. 29(2): 153-161, December-2016

Application of Stabilizer to Improvement the Saline Soil in Lor Nur Lacustrine

2014 ◽  
Vol 912-914 ◽  
pp. 53-56
Author(s):  
Jun Ci ◽  
Yuan Fang Zhang
Keyword(s):  
Compressive Strength ◽  
Experimental Research ◽  
Unconfined Compressive Strength ◽  
Saline Soil ◽  
Engineering Properties ◽  
Saline Soils ◽  
Lop Nur ◽  
Engineering Standards ◽  
Special Soil

Considering the Lop Nur Lacustrine plain saline soil is a special soil which with poor engineering properties such as collapsible and expansion. Through an experimental research on the saline soils stabilized by lime, cement and a polymeric solidified material was conducted. The unconfined compressive strengths and water-related stability of stabilized saline soils were discussed. It was shown that unconfined compressive strength and water-related stability of stabilized Lacustrine plain saline soils attained corresponding engineering standards and that it could be used as roadbed fillings., which could provide a reference to prevent and treatment about the dangers of Lop Nur Lacustrine plain saline soil.

The chemical composition and ionic strength of soil solutions from New Zealand topsoils

Soil Research ◽  
1985 ◽  
Vol 23 (2) ◽  
pp. 151 ◽  
Author(s):  
DC Edmeades ◽  
DM Wheeler ◽  
OE Clinton
Keyword(s):  
Soil Moisture ◽  
New Zealand ◽  
Ionic Strength ◽  
Soil Solution ◽  
Soil Type ◽  
Ionic Composition ◽  
Soil Samples ◽  
Minor Effect ◽  
Solution Composition ◽  
Soil Solutions

In preliminary experiments a centrifuge method for extracting soil solutions was examined. Neither the time nor speed of centrifuging had any effect on the concentrations of cations in soil solution. The concentration of cations increased with decreasing soil moisture content, and NO3, Ca, Mg, and Na concentrations increased with increasing time of storage of freshly collected moist soils. It was concluded that to obtain soil solutions, which accurately reflect the soil solution composition and ionic strength (I) in situ, requires that soil samples are extracted immediately (<24 h) following sampling from the field. Prior equilibration of soil samples, to adjust soil moisture contents, is therefore not valid. The effect of time of sampling and soil type, and the effects of fertilizer and lime applications, on soil solution composition and ionic strength, were measured on freshly collected field moist topsoils. Concentrations of Ca, Mg, K, Na, NH, and NO, were lowest in the winter and highest in the summer. Consequently, there was a marked seasonal variation in ionic strength which ranged from 0.003 to 0.016 mol L-1 (mean, 0.005 s.d. 0.003) over time and soil type. Withholding fertilizer (P, K, S, Ca) for two years had only a minor effect on ionic composition and strength, and liming increased solution Ca, Mg and HCO3, but decreased Al, resulting in a twofold increase in ionic strength. These results suggest that the ionic strength of temperate grassland topsoils in New Zealand lie within the range 0.003-0.016 and are typically 0.005.

scholarly journals Growth response of pigeon pea (Cajanus cajan L. Millsp) on saline and alfisol soils

2021 ◽  
Vol 306 ◽  
pp. 01010
Author(s):  
M. Soedarjo
Keyword(s):  
Growth Retardation ◽  
Saline Soil ◽  
Growth Parameters ◽  
Research Work ◽  
Dry Weight ◽  
Pigeon Pea ◽  
Saline Soils ◽  
Growth Responses ◽  
High Concentration ◽  
Shoot Dry Weight

As an archipelago country, Indonesia is surrounded by abundant saline soils which could be potential for growing food crops. The research work was conducted to study the growth responses of some pigeon pea genotypes on saline soils. The genotypes of Pigeon pea (LG Kidul, Mega, 90024, 91043 and 94028), as treatment, were grown on Alfisol soil (non-saline) and on saline soil. The experiment was carried out using completely randomized design and replicated three times. All data observed were analyzed by employing standard deviation from 3 replicates. The results of present research work revealed a significant growth retardation of pigeon pea when grown on saline soil. All growth parameters, plant height, plant diameter, root dry weight, and shoot dry weight were significantly lower on saline soil than on Alfisol soil. High concentration of Na+ was observed in roots, shoots and leaves of pigeon pea indicating growth retardation and toxicity symptoms of pigeon pea on saline soil was due to Na+.

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