scholarly journals The Effects of Enclosing Cultivated Land on the Physical Properties of Soil in the Loess Hill Region of Ordos

2016 ◽  
Vol 18 (3) ◽  
pp. 1-14
Author(s):  
Lin Wang ◽  
Fengna Xue ◽  
Wenbang Gao ◽  
Jing Shi ◽  
Shanshan Sun ◽  
...  
Keyword(s):  
Physical Properties ◽  
Soil Moisture Content ◽  
Soil Bulk Density ◽  
Soil Physical Properties ◽  
Ecological Systems ◽  
Cultivated Land ◽  
Short Term ◽  
Native Flora ◽  
Hill Region ◽  
Properties Of Soil

Abstract Protection of the environment by returning farmland to forest and grassland through enclosing areas of land to permit regeneration of native flora is being implemented in the Loess hill region of China. Soil physical properties are important components of ecological systems, as comparisons between cultivated and enclosed areas demonstrate. The results showed: the soil moisture content in the enclosed area was 14.6% and that in the cultivated area was 14%; the soil bulk density and soil porosity were respectively 1.45 g/cm3 and 45.28% in the enclosed areas, and respectively 1.46 g/cm3 and 44.79% in cultivated land. The alteration of soil physical properties was not big between cultivated areas and enclosed areas in the short term.

scholarly journals Pengaruh Sifat Fisik Tanah terhadap Hama Simphylid Pada tanaman Nanas (Ananas comosus (L.) Merr) di PT. Great Giant Pineapple Terbanggi Besar Lampung Tengah

2017 ◽  
Vol 15 (3) ◽  
Author(s):  
Sandi Aji ◽  
Afandi Afandi ◽  
Lestari Wibowo ◽  
K.E.S. Manik
Keyword(s):  
Physical Properties ◽  
High Hardness ◽  
Soil Physical Properties ◽  
Soil Sampling ◽  
Soil Science ◽  
Ananas Comosus ◽  
Survey Method ◽  
Soil Pests ◽  
Poor Soil ◽  
Properties Of Soil

This research was conducted in the planting area of pineapple (Ananas comosus) PT. GGP Terbanggi Besar Central Lampung indicated attacked by pests simphylid in March 2014 until May 2014. Analysis of soil physical properties carried out in the Laboratory of Soil Science, Department of Agrotechnology, Faculty of Agriculture, University of Lampung. The method used in this study is a survey method. Soil sampling conducted at three locations indicated simphylid pests. Soil sampling done at some point and some depth. Results from this research that pest symphilid most numerous in one location with a number of acquisition 172 tail where the location of the physical properties of good land which the density value of the content is low, the total pore low, macropores and high hardness low ground , allowing sinphylid be able to live and thrive. While at the location of two and three with the condition density value of the content is high, the total pore high, macropores low, and violence high soil pests simphylid not so much discovered as simphylid can not multiply and survive on the physical condition of poor soil Keywords: Pineapple, Symphilid, and physical properties of soil

scholarly journals THE MODIFICATION OF PHYSICAL PROPERTIES OF THE SOIL UNDER THE INFLUENCE OF SOME CONVENTIONAL AND UNCONVENTIONAL TILLAGE SYSTEMS AND CORRELATION BETWEEN SOME OF THE SOIL COMPACTATION INDICATORS AND YIELDS

1970 ◽  
Vol 63 ◽  
Author(s):  
L. Raus ◽  
G. Jitareanu
Keyword(s):  
Physical Properties ◽  
Soil Properties ◽  
Management Practice ◽  
Soil Bulk Density ◽  
Physical Conditions ◽  
Complex Interactions ◽  
Tillage System ◽  
Tillage Operation ◽  
Crop Parameters ◽  
Properties Of Soil

Optimal crop rooting soil physical conditions are a result of complex interactions between soil strength and oxygen and water supply to plant roots. Spatial/temporal variability in soil properties can be critical in the evaluation of the effects of tillage management practice on soil and crop parameters. In this paper tillage were evaluated for theirs effects on soil physical and hydrological properties. Tillage treatments were plough to 20 cm, plough to 30 cm, chisel and disc harrow applied to wheat in to been/ wheat/ maize rotation. The experiments have been conducted in the Didactic Station of the USAMV – Iasi, Ezăreni Farm, during the period between 2002-2004, on a cambic chernozem with 3,4 % humus and pH 7. Tillage system modify, at least temporarily, some of the physical properties of soil, such as soil bulk density, penetration resistance, soil porosity and soil structural stability. Hydraulic properties of the soil did not differ significantly. All the tillage operation was significantly different in their effects on soil properties.

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 Effect of Farming Systems on the Spatial Variability of Soil Physical Properties and Soybean Yield

2019 ◽  
Vol 11 (15) ◽  
pp. 87
Author(s):  
Ligia Maria Lucas Videira ◽  
Paulo Ricardo Teodoro Silva ◽  
Diego dos Santos Pereira ◽  
Rafael Montanari ◽  
Alan Rodrigo Panosso ◽  
...  
Keyword(s):  
Spatial Distribution ◽  
Spatial Variability ◽  
Physical Properties ◽  
Soil Conservation ◽  
Yield Components ◽  
Farming Systems ◽  
Total Porosity ◽  
Soil Bulk Density ◽  
Soil Physical Properties ◽  
High Soil Moisture

In no-tillage (NT) and minimum tillage (MT) areas, spatial variability of soil physical properties may affect crop yield. The aim of this study was to assess the spatial distribution of soil physical properties, as well as the yield components and grain yield of soybean (GY), based on the mapping of areas under soil conservation farming systems. We assessed yield components, GY and the physical properties of an Oxisol, under NT and MT using the t-student test, and geostatistics to assess spatial variability. The largest population of NT plants showed no spatial dependence and did not influence GY, but the components related to plant height and soil properties differed between systems. From a spatial standpoint, the kriging maps demonstrated that mass of one thousand grains (MOG), total porosity (TP) and soil bulk density (BD) influenced GY under NT, whereas TP1 exerted the most influence under high soil moisture conditions and MT. The maps make it possible to assess the spatial distribution of soil physical properties and the influence on GY, making them an important tool for more accurate production planning in soil conservation systems.

scholarly journals Bulk density and porosity of soils influenced by skidding operations in the Nkrankwanta Off-Forest Reserve of Ghana

2021 ◽  
Vol 8 (2) ◽  
pp. 1409-1415
Author(s):  
Ammal Abukari ◽  
Donkor Christian ◽  
Kwame Ochire-Boadu
Keyword(s):  
Physical Properties ◽  
Bulk Density ◽  
Block Design ◽  
Soil Surface ◽  
Soil Bulk Density ◽  
Soil Physical Properties ◽  
Soil Porosity ◽  
Forest Reserve ◽  
Randomized Block Design ◽  
Increasing Trends

 Heavy forest machinery used in skidding has the capacity to influence the physical properties of soils. These may possibly lead to an upsurge in soil disruption and compaction of the soil surface decreases forest soil fertilities. This study assesses the effects of skidding on some soil physical properties such as the soil bulk density and porosity in the Nkrankwanta off-forest reserve in Ghana. The treatments comprised of four traffic intensity levels (1, 5, 10, and 15 passes) of the Mercedes Benz skidder (MB) Trac 1800 and a slope of two levels (less than 20 % and greater than 20 %) in a completely randomized block design. In addition, porosity and soil bulk density were assessed at varied distances from the MB Trac 1800. Soil bulk density results showed increasing trends with traffic frequency. Soil bulk density measured in the undisturbed area was 0.64 g cm-3 and 0.56 g cm-3 at slopes of less than 20% and greater than 20%, respectively. On the skid trail, soil bulk density significantly increased with traffic frequency (p<0.05). However soil porosity declined. Soil porosity estimated in uninterrupted area was 59.10 % and 57.40 % at < 20% and > 20% slope, respectively. Soil porosity was significantly influenced via different skidder passes (p<0.05). The soil physical properties were not influenced by the steepness of the slope however acted together in the number of passes to influence soil porosity. The impacts of the skidder on soil physical properties were significantly apparent at distances of 2 m to each sideway of the skidding trail. In conclusion, distinct responsiveness ought to be considered throughout the operations of skidding to curtail unfriendly influences on soil physical properties in ground-base skidding.

scholarly journals Effect of amount and time of incorporation of forest litter on soil physical properties

2020 ◽  
Vol 15 (2) ◽  
pp. 68-74
Author(s):  
Paardensha Ivy Chinir ◽  
Manoj Dutta ◽  
Rizongba Kichu ◽  
Sewak Ram
Keyword(s):  
Soil Moisture ◽  
Moisture Content ◽  
Physical Properties ◽  
Soil Moisture Content ◽  
Particle Density ◽  
Forest Litter ◽  
Soil Physical Properties ◽  
Mean Weight Diameter ◽  
The Difference ◽  
Water Holding

A field experiment was conducted to evaluate the effect of forest litter and its time of incorporation on soil physical properties. The study showed that plots with forest litter incorporated at 45 DBS (Days Before Sowing) had significantly higher soil moisture content as compared to those incorporated at 30 DBS after 30 and 60 DAS. However, the difference in the time of incorporation had no significant effect on soil moisture content at 90 DAS. At 30 DAS, application of forest litter @ 6 t ha-1 and 9 t ha-1 significantly increased the soil moisture content at a rate of 4.11 and 11.42 per cent, respectively over control. At 60 DAS, application of forest litter @ 3 t ha-1, 6 t ha-1 and 9 t ha-1 significantly increased the soil moisture content at the rate of 15.05, 17.26 and 25.65 per cent, respectively over control. At 90 DAS, a trend was noticed which showed that soil moisture content significantly increased at a progressive rate with each increase in the dose of forest litter application. At 90 DAS, the addition of forest litter @ 3 t ha-1, 6 t ha-1and 9 t ha-1 increased the soil moisture content @ 10.16, 17.84 and 22.20 per cent, respectively over control. The plots with forest litter incorporated at 45 DBS had significantly higher hydraulic conductivity, per cent aggregates and mean weight diameter as compared to those incorporated at 30 DBS. However, the difference in the time of incorporation i.e., at 30 and 45 DBS had no significant effect on bulk density, particle density and water holding capacity. Incorporation of forest litter @ 3 t ha-1, 6 t ha-1 and 9 t ha-1 significantly decreased the bulk density at the rate of 3.67, 8.65 and 14.14 per cent; while particle density increased at the rate of 2.59, 3.42 and 6.61 per cent, respectively when compared to control. The addition of forest litter @ 3 t ha-1, 6 t ha-1 and 9 t ha-1 resulted in a significant increase in water holding capacity and hydraulic conductivity at a rate of 3.72, 4.65 and 6.77 per cent and 24.13, 32.30 and 41.73 per cent, respectively over control. Further, the application of forest litter @ 3t ha-1, 6 t ha-1 and 9 t ha-1 significantly increased the per cent aggregate and mean weight diameter of the soil @ 1.77, 3.49 and 6.58 per cent 17.31, 26.28 and 41.35 per cent, respectively over control. The study revealed that incorporating 9 t ha-1 of forest litter at 45 DBS had the most beneficial effect on soil physical properties.

scholarly journals Response of Cocoyam (Xanthosoma mafafa) Growth, Yield Parameters and Soil Physical Properties of Ultisol at Umudike, Southeastern Nigeria

2020 ◽  
pp. 1-10
Author(s):  
Iroegbu, Chidinma S ◽  
Asawalam, Damian O ◽  
O. A. Dada ◽  
J. E. Orji
Keyword(s):  
Physical Properties ◽  
Bulk Density ◽  
Leaf Area ◽  
Plant Height ◽  
Poultry Manure ◽  
Total Porosity ◽  
Soil Bulk Density ◽  
Soil Physical Properties ◽  
Southeastern Nigeria ◽  
Number Of Leaves

Aim: To determine the effect of different rates of sawdust (SD) and poultry manure (PM) applied on some soil physical properties of acid sandy Ultisol, and some growth parameters and yield of cocoyam. Study Design: 2 x 5 factorial arrangement in a randomized complete block design replicated three times.  Place and Duration of Study: The experiment was conducted in Eastern farm of Michael Okpara University of Agriculture, Umudike during 2014 and 2015 planting seasons. Methodology: The treatments comprised of two manure sources at five levels each: sawdust (0, 2, 10, 15 and 20t/ha) and poultry manure (0, 2, 4, 6 and 8t/ha). The treatments were assigned randomly to the plots and incorporated into the soil two weeks before planting. Data were collected on plant height, number of leaves, leaf area, corms, cormels and total yield. Soil samples were collected with core samplers for physical properties such as Soil Bulk density and Total Porosity. All the data collected were subjected to ANOVA for factorial experiment in RCBD at 5% probability level. Results: The result showed that the interactions of poultry manure and sawdust significantly (p<0.05) improved soil bulk density and total porosity with the lowest value obtained with 0t/ha SD + 8t/ha PM in both 2014 and 2015. The result showed that the interactions of poultry manure and sawdust significantly (p<0.05) increased the leaf area with the highest value obtained with 20t/ha SD + 8t/ha PM in both 2014 and 2015. Also, only the increasing rates of treatment applied significantly (p<0.05) increased the number of leaves, plant height, leaf area and cocoyam yield with the highest value obtained with 20t/ha SD + 8t/ha PM. Also, the various rates of treatment application significantly (p<0.05) increased the cocoyam yield (weight of corms and cormels) with the highest value obtained with 20t/ha SD + 8t/ha PM. Conclusion: Improvement in growth and yield of cocoyam resulted from the improved nutrient status of the soil as a result of the amendments applied.

Short-Term Effects of Land Leveling on Soil Physical Properties and Microbial Biomass

2003 ◽  
Vol 67 (5) ◽  
pp. 1405-1417 ◽  
Author(s):  
K. R. Brye ◽  
N. A. Slaton ◽  
M. C. Savin ◽  
R. J. Norman ◽  
D. M. Miller
Keyword(s):  
Microbial Biomass ◽  
Physical Properties ◽  
Soil Physical Properties ◽  
Short Term ◽  
Land Leveling ◽  
Short Term Effects
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