Effect of Bermuda grass root on mechanical properties of soil under dry–wet cycles

2021 ◽  
Author(s):  
Qiang Ma ◽  
Nianze Wu ◽  
Henglin Xiao ◽  
Zhi Li ◽  
Wentao Li
Keyword(s):  
Mechanical Properties ◽  
Bermuda Grass ◽  
Grass Root ◽  
Properties Of Soil

Mechanical properties of clay reinforced with Bermuda grass root under drying–wetting cycles

2021 ◽  
Vol 80 (1) ◽  
Author(s):  
Qiang Ma ◽  
Zhi Li ◽  
Henglin Xiao ◽  
Zhi Hu ◽  
Lydiah Pung
Keyword(s):  
Mechanical Properties ◽  
Bermuda Grass ◽  
Grass Root

Water saving technology of cotton sowing

2019 ◽  
Vol 1 (4) ◽  
pp. 16-22
Author(s):  
Ongarbay P. Auezov ◽  
Bazarbay K. Utepbergenov ◽  
Bakhitbay N. Ramazanov
Keyword(s):  
Mechanical Properties ◽  
Water Scarcity ◽  
Physical And Mechanical Properties ◽  
Water Saving ◽  
Plastic Film ◽  
Properties Of Soil

This article presents the results of a technology of placing a plastic film in the space between cotton rows. We have studied physical and mechanical properties of soil before placing the film. We have proved that the plastic film in the spaces between the cotton rows retains moisture in the soil much longer and it is possible to obtain up to 22 kg/ha of raw cotton in the condition of water scarcity in the Karakalpakstan.

Advances in measuring mechanical properties of soil in relation to soil health

2021 ◽  
pp. 215-240
Author(s):  
Muhammad Naveed ◽  
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Soil Health ◽  
Indentation Test ◽  
Mechanical Tests ◽  
Confined Compression ◽  
Microstructural Stability ◽  
Rigorous Testing ◽  
The Stability ◽  
Properties Of Soil

Although mechanical properties of soil are fast and easy to measure, they have not been used as indicators of soil health apart from cone penetration resistance. The confined compression test is traditionally used for the prediction of soil compaction risks. Other mechanical tests such as soil rheometry, miniature indentation test, and tensile strength are used for assessing the impact of certain amendments on the stability of the soil. Rheological techniques are appropriate to investigate microstructural stability of soil on a particle-particle scale. Miniature indentation test is very useful to perform when mechanical properties of soil are required to measure at the mm scale. Measurement of the tensile strength of soil has an advantage as it eliminates the effect of water content. There is clearly a need for more practical and rigorous testing on comparing different mechanical properties of the soil to test how they perform relative to each other.

scholarly journals Pressure in the hydraulic system of three point hitch of tractor equiped with electrical and mechanical control

2012 ◽  
Vol 49 (No. 2) ◽  
pp. 37-43 ◽  
Author(s):  
I. Petranský ◽  
Š. Drabant ◽  
J. Ďuďák ◽  
A. Žikla ◽  
I. Grman ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Hydraulic System ◽  
Safety Valve ◽  
Physical And Mechanical Properties ◽  
Point Of View ◽  
Hydraulic Circuit ◽  
Testing Conditions ◽  
Operation Parameters ◽  
Properties Of Soil ◽  
Ploughing Depth

The goal of the measurement of the tractor ZTS 164 45 equipped with digital electrohydraulical control EHR-D BOSCH during ploughing with ploughs KUHN (4 bottoms) and 5 PHX 35 (5 bottoms) was to obtain time dependent states of pressure in the hydraulic system of the three point hitch of tractor. From the point of view of comparison of obtained results testing conditions were determinated with respect to physical and mechanical properties of soil such as soil volume mass, soil humidity, penetration resistance and shear resistance of soil. Beyond these measurements also measurements of operation parameters as a&nbsp;ploughing depth, ploughing width, working speed and fuel consumption were accomplished. The measured results of physical and mechanical properties of soil show big content of loam elements and stones in the soil. Simultaneously the measured results of the operation parameters of the ploughing sets confirmed that the ploughs KUHN and 5 PHX 35 are suitable for tractor ZTS 164 45. Based on the measured results there is a possibility to infer following conclusions: Control system of the three point hitch offers a reliable function. Hydraulic circuit is equipped by an improper distributor which causes pressure peaks which are corres-<br />ponding with safety valve adjustment. Hydraulic circuit has a&nbsp;low conductive resistance. Loading of tractor body is higher when using mounted plough than with semi mounted plough.

scholarly journals Determination of mechanical properties of soil under laboratory conditions

2014 ◽  
Vol 60 (Special Issue) ◽  
pp. S66-S69 ◽  
Author(s):  
V. Malý ◽  
M. Kučera
Keyword(s):  
Mechanical Properties ◽  
Penetration Depth ◽  
Measuring Device ◽  
Laboratory Conditions ◽  
Measuring Network ◽  
Set Up ◽  
Different Diameters ◽  
Different Levels ◽  
Properties Of Soil

This paper presents the mechanical properties of soil. In order to determine the properties of soil under laboratory conditions, a special measuring device was constructed, viz. a bevameter. Two types of soil with different levels of moisture were examined and their mechanical properties were determined. Measurements were taken of non-compressed soil. A measuring network was set up, consisting of measuring and recording devices. In the course of measuring, the force and penetration depth of the pressing plate were recorded simultaneously. Three different diameters of pressing plate were used, namely 38, 50 and 70 mm. The pressure on the contact area was calculated after completion of the measurements, and the relationships between pressure and penetration depth were presented graphically.

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