scholarly journals Changes in soil physical properties under the effect of irrigation

2021 ◽  
Vol 939 (1) ◽  
pp. 012081
Author(s):  
Yu Kenjaev ◽  
A Tursunkulova
Keyword(s):  
Physical Properties ◽  
Irrigation Water ◽  
Soil Compaction ◽  
Soil Layer ◽  
Soil Physical Properties ◽  
Soil Layers ◽  
Long Period ◽  
Bulk Mass ◽  
General Physical

Abstract The mechanical composition of soils in the middle reaches of the Zarafshan River (Jambay, Samarkand, Payarik, Ishtikhon, Kattakurgan and Narpay districts) and the processes of formation of soil layers under the influence of irrigation water of general physical properties were scientifically analyzed. In this case, the inflow of the Zarafshan River played an important role in the formation of light agroirrigation strata. An increase in nutrients and humus with an increase in the amount of physical sludge over a long period of time (35–40 years) is positively assessed for thickening of the soil layer, but leads to an increase in bulk mass of 0.15–0.3 g / cm3 and soil compaction.

scholarly journals Comparison of wheat and safflower cultivation areas in terms of total carbon and some soil properties under semi-arid climate conditions

2015 ◽  
Vol 7 (1) ◽  
pp. 1007-1024
Author(s):  
B. Turgut
Keyword(s):  
Organic Matter ◽  
Physical Properties ◽  
Organic Matter Content ◽  
Aggregate Stability ◽  
Soil Physical Properties ◽  
Matter Content ◽  
Total Carbon ◽  
Arid Climate ◽  
Soil Layers ◽  
Semi Arid

Abstract. The aim of this study was to compare the soils of the wheat cultivation area (WCA) and the safflower cultivation area (SCA) within semi-arid climate zones in terms of their total carbon, nitrogen, sulphur contents, particle size distribution, aggregate stability, organic matter content, and pH values. This study presents the results from the analyses of 140 soil samples taken at two soil layers (0–10 and 10–20 cm) in the cultivation areas. At the end of the study, it has been established that there were significant differences between the cultivation areas in terms of soil physical properties such as total carbon (TC), total nitrogen (TN), total sulphur (TS) contents and pH, while only the TN content resulted in significantly different between the two soil layers. Moreover significant differences were identified in the cultivation areas in terms of soil physical properties including clay and sand contents, aggregate stability and organic matter content, whereas the only significant difference found among the soil layers was that of their silt content. Since safflower contains higher amounts of biomass than wheat, we found higher amounts of organic matter content and, therefore, higher amounts of TN and TS content in the soils of the SCA. In addition, due to the fact that wheat contains more cellulose – which takes longer to decompose – the TC content of the soil in the WCA were found to be higher than that of the SCA. The results also revealed that the WCA had a higher carbon storage capacity.

Forest ecosystem responses to artificially induced soil compaction. I. Soil physical properties and tree diameter growth

1986 ◽  
Vol 16 (4) ◽  
pp. 750-754 ◽  
Author(s):  
John R. Donnelly ◽  
John B. Shane
Keyword(s):  
Physical Properties ◽  
Soil Compaction ◽  
Surface Soil ◽  
Soil Bulk Density ◽  
Soil Physical Properties ◽  
Infiltration Capacity ◽  
Ecosystem Responses ◽  
Resistance Surface ◽  
Soil Penetration Resistance ◽  
Induced Changes

Soil and vegetation responses to artificially imposed surface compaction and the effects of bark mulch on these responses were monitored for a 5-year period within a Quercusalba L. – Quercusvelutina Lam. – Quercusrubra L. forest growing on a loamy sand in northwestern Vermont. Compaction resulted in significant changes in vegetation and soil physical properties. Soil bulk density, soil penetration resistance, surface soil moisture, and soil temperature increased following compaction; infiltration capacity and the radial growth of Acerrubrum L. and Q. velutina decreased. Application of bark mulch prior to compaction tended to reduce compaction effects. Postcompaction additions of bark mulch did not result in noticeable amelioration of compaction-induced changes 2 years after application.

scholarly journals Relationships between Root Traits and Soil Physical Properties after Field Traffic from the Perspective of Soil Compaction Mitigation

Agronomy ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 1697
Author(s):  
Matthieu Forster ◽  
Carolina Ugarte ◽  
Mathieu Lamandé ◽  
Michel-Pierre Faucon
Keyword(s):  
Physical Properties ◽  
Bulk Density ◽  
Soil Compaction ◽  
Root Length Density ◽  
Root Traits ◽  
Air Permeability ◽  
Soil Physical Properties ◽  
Soil Reinforcement ◽  
Soil Functions ◽  
Crop Species

Compaction due to traffic is a major threat to soil functions and ecosystem services as it decreases both soil pore volume and continuity. The effects of roots on soil structure have previously been investigated as a solution to alleviate compaction. Roots have been identified as a major actor in soil reinforcement and aggregation through the enhancement of soil microbial activity. However, we still know little about the root’s potential to protect soil from compaction during traffic. The objective of this study was to investigate the relationships between root traits and soil physical properties directly after traffic. Twelve crop species with contrasting root traits were grown as monocultures and trafficked with a tractor pulling a trailer. Root traits, soil bulk density, water content and specific air permeability were measured after traffic. The results showed a positive correlation between the specific air permeability and root length density and a negative correlation was found between bulk density and the root carbon/nitrogen ratio. This study provides first insight into how root traits could help reduce the consequences of soil compaction on soil functions. Further studies are needed to identify the most efficient plant species for mitigation of soil compaction during traffic in the field.

scholarly journals SOIL PHYSICAL CONSTRAINTS AND THEIR EFFECT ON MORPHOLOGICAL CHARACTERS OF COCONUT (Cocos nucifera L. ) ROOTS

CORD ◽  
2000 ◽  
Vol 16 (01) ◽  
pp. 34
Author(s):  
L P Vidhana Arachchi ◽  
Yaspa P A J ◽  
Mapa R B ◽  
Somapala H.
Keyword(s):  
Water Stress ◽  
Physical Properties ◽  
Soil Compaction ◽  
Cocos Nucifera ◽  
Practical Importance ◽  
Soil Physical Properties ◽  
Land Suitability ◽  
Electron Microscopic ◽  
Physical Constraints ◽  
Cocos Nucifera L

The objective of the study was to (1) evaluate land suitability for coconut (cocos nucifera L.) production in relation to soil physical properties, (2) identify the soil physical constraints and (3) study their effect on the morphological adaptation of coconut roots. Soil physical properties were found to be significantly related to coconut yield (R2=81.37; p<0.01). Multiple regression with cluster analysis of soil physical properties vs coconut yield enabled classification of soil series into three major groups namely (a) highly  (b) moderately and (c) less productive series. It was observed that the high soil compaction which limited the available water and aeration capacity of soils resulted in retardation of the activity of coconut roots. Water stress due to soil compaction was found to induce production of more inactive roots by suberization and dehydration processes. Scanning electron microscopic image showed that soil compaction and water stress, reduced the cell volume per unit area  of the absorption zone and the number of pores in respiratory organs of  coconut roots resulting in retardation of water and nutrient absorption, and air exchange processes. This in turn malfunctions of absorption cells and respiratory organs of roots resulted in retardation of growth of coconut seedlings. The practical importance of these findings in formulation of land suitability maps for coconuts is discussed.

scholarly journals Pedogenesis of Mt. Sumbing Volcanic Ash above The Alteration Clay Layer in The Formation of Landslide Susceptible Soils in Bompon Sub-Watershed

2019 ◽  
Vol 4 (1) ◽  
pp. 15
Author(s):  
Waode Asryanti Wida ◽  
Azwar Maas ◽  
Junun Sartohadi
Keyword(s):  
Physical Properties ◽  
Water Content ◽  
Organic Material ◽  
Soil Layer ◽  
Soil Physical Properties ◽  
Liquid Limit ◽  
Plasticity Index ◽  
Volcanic Area ◽  
Residual Soil ◽  
Plasticity Limit

Numerous researches on landslides have been carried out by many researches. However, studies on soil physical properties related to landslides potential in volcanic area are still rare. The objective of this study was to examine the effect of soil physical properties on landslides potential. To collect the soil sample, sampling area method was applied. The soil type used in this study was the residual soil. The values of clay liquid limit, plasticity limit, plasticity index, water content, COLE index were used to measure the physical properties of the soil. Organic material was used as the supporting data. The results showed that the soil in the command area showed high value of clay which exceeded 50%. Such high level conditions in each profile affect the liquid limit; plasticity limit, plasticity index, water content, COLE index and organic material. Based on the results, it can be concluded that residual soils with significantly high clay values illustrated the risk of landslide fields formation in Bompon sub-watershed. The clay soil layer was the controlled factor of soil movement.

scholarly journals LOOSENING AND LEVELING DEVICE FOR PREPARING SOIL FOR MELON CROPS

2021 ◽  
pp. 269-278
Author(s):  
Nikolay Aldoshin ◽  
Farmon Mamatov ◽  
Yury Kuznetsov ◽  
Igor Kravchenko ◽  
Aleksey Kupreenko ◽  
...  
Keyword(s):  
Energy Consumption ◽  
Soil Compaction ◽  
Symmetry Axis ◽  
Soil Layer ◽  
Soil Tillage ◽  
Labor Costs ◽  
Soil Layers ◽  
Full Rotation ◽  
Soil Preparation ◽  
Automatic Formation

The analysis of soil cultivation technologies for sowing melon crops was carried out. The design of a combined soil tillage tool capable of plowing, pre-sowing treatment and formation of irrigation furrows in one pass was substantiated. The main tillage is recommended to be done by front plow tools for smooth plowing. Plow bodies of two bottom plows should be mounted along the symmetry axis of the implement according to the lister scheme, which allows not to carry out a full rotation of soil layers and provides automatic formation of irrigation furrow. A loosening and leveling device for strip pre-sowing soil tillage in the sowing zone has been developed. The use of a combined soil tillage tool can reduce labor costs up to 25%, energy consumption for soil preparation up to 50%, reduce the duration of work, reduce soil compaction and retain moisture in the soil layer.

scholarly journals Effects of Long-Term Enclosing on Vertical Distributions of Soil Physical Properties and Nutrient Stocks in Grassland of Inner Mongolia

Agronomy ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 1832
Author(s):  
Juan Hu ◽  
Daowei Zhou ◽  
Qiang Li ◽  
Qicun Wang
Keyword(s):  
Physical Properties ◽  
Inner Mongolia ◽  
Soil Layer ◽  
Soil Physical Properties ◽  
Available Phosphorus ◽  
Available Nitrogen ◽  
Green Plants ◽  
Nutrient Stocks ◽  
Vertical Distributions

Enclosing plays a crucial role in vegetation and soil quality in grassland. The biomass of green plants, litter, and vertical distributions of soil physical properties and nutrient stocks were evaluated at plot enclosed long term for 38 years inside a fence and a long-term grazing plot outside a fence in a semi-arid grassland of Inner Mongolia. The results showed that dry matter of green plants and litter during the 38-year enclosing treatment was higher than in the grazing treatment (p < 0.01). The soil silt (2–50 μm) in the 38-year enclosing treatment was 5.9% higher than in the grazing treatment (p < 0.01) in 0–10 cm soil, and the fine sand (100–250 μm) was 6.0% lower (p < 0.05). The 38-year enclosing treatment slightly decreased the bulk density and significantly decreased the electrical conductivity in each soil layer (0–100 cm). The 38-year enclosing treatment significantly increased the stocks of soil organic carbon (SOC), available phosphorus (AP), and available potassium (AK) on the surface soil, and obviously decreased the stocks of total nitrogen (TN), total phosphorus (TP), calcium (Ca), magnesium (Mg), sulfur (S), and available nitrogen (AN) in each soil layer (0–100 cm). In conclusion, long-term enclosing improved grassland production, but decreased most nutrient stocks in soil.

Compaction and Rutting During Harvesting Affect Better Drained Soils More Than Poorly Drained Soils on Wet Pine Flats

1995 ◽  
Vol 19 (2) ◽  
pp. 72-77 ◽  
Author(s):  
W. Michael Aust ◽  
Mark D. Tippett ◽  
James A. Burger ◽  
William H. McKee
Keyword(s):  
Hydraulic Conductivity ◽  
Physical Properties ◽  
Soil Compaction ◽  
Soil Surface ◽  
Soil Physical Properties ◽  
Site Conditions ◽  
Reducing Conditions ◽  
Water Tables ◽  
Conductivity Water ◽  
Poorly Drained Soils

Abstract Soil compaction and rutting (puddling) are visually distinct types of wet-site harvesting disturbances; however, the way in which they affect soil physical properties and hydrology is not well documented. Three compacted and three rutted sites were evaluated to determine the effects of the disturbances on soil physical and hydrologic properties. For each site, primary skid trails and nontrafficked areas were compared. Both compaction and rutting increased bulk density, and reduced macropore space and saturated hydraulic conductivity. Water tables and reducing conditions were closer to the soil surface within the primary skid trails. For the compacted and rutted skid trails, changes were greatest on sites that initially had better drainage and aeration. Compacted sites may prove easier to mitigate with site preparation than rutted sites due to the shallower nature of the disturbances and drier site conditions that will facilitate mechanical mitigation. Submitted to South. J. Appl. For. 18(2):72-77.

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