scholarly journals Assessment of soil quality of coastal shrimp culture pond at Chakaria, Cox’s Bazar

2016 ◽  
Vol 42 (1) ◽  
pp. 21-27
Author(s):  
M Shafiqul Islam ◽  
Mahmodul Hasan Tarek ◽  
Md Simul Bhuyan ◽  
Hossain Zamal
Keyword(s):  
Bulk Density ◽  
Soil Quality ◽  
Particle Density ◽  
Soil Bulk Density ◽  
Strong Correlations ◽  
Shrimp Culture ◽  
Exchangeable K ◽  
Water Capacity ◽  
The Status

The present study was carried out to find the status of different soil quality variables of coastal shrimp culture pond at different tidal marks of Chakaria, Cox’Bazar during the period from August 2012 to July 2013. The values of different soil quality variables such as sand, silt, clay, pH, organic matter, NO2-N, PO4-P, exchangeable K+, Soil compactness, bulk density, particle density, porosity and Field water capacity fluctuated between 2.04-43.88%, 30.80-55.36%, 23.98-49.94%, 5.9-8.9, 1.62-9.95%, 4.01-9.92 ?g/Kg, 1.14-3.50 ?g/Kg, 0.82-1.74 meq/100g, 14.00-31.5 cm, 0.80-1.21 gcm-3, 2.11-2.74 gcm-3, 52.7-65.97% and 44.27-78.18% respectively. Significant differences (p<0.05) in the values of sand, silt, clay, bulk density, porosity, NO2-N and field water capacity of soil of the culture ponds at tide marks were observed. Strong correlations between soil bulk density vs sand (0.863), field water capacity vs clay (0.845), field water capacity vs silt (0.797), exchangeable K+ vs PO4-P (0.787), porosity vs field water capacity (0.769) and porosity vs clay (0.705) were found at 0.01% level of significance.J. Asiat. Soc. Bangladesh, Sci. 42(1): 21-27, June 2016

scholarly journals Effect of microbial UGmax enricher on soil physical and water retention properties

2018 ◽  
Vol 69 (4) ◽  
pp. 243-250
Author(s):  
Mirosław Orzechowski ◽  
Jacek Długosz ◽  
Sławomir Smólczyński ◽  
Barbara Kalisz ◽  
Paweł Sowiński ◽  
...  
Keyword(s):  
Bulk Density ◽  
Water Retention ◽  
Particle Density ◽  
Soil Bulk Density ◽  
Temperate Climate ◽  
Water Capacity ◽  
Available Water ◽  
Available Water Capacity ◽  
Water Retention Properties ◽  
The Impact

Abstract The paper presents the impact of UGmax enricher on soil physical and water retention properties. The experiment was established in 2005 in a 2 ha field 9 km from Lidzbark Warmiński in the village of Budniki. The studied soils were classified as Cambisols and Luvisols (IUSS Working Group WRB 2015), and they were formed from glaciolimnic deposits. Soil bulk density, soil particle density, texture, total porosity and water retention properties using low and high-pressure chambers were determined. The use of UGmax enricher on loamy soils used as arable lands in temperate climate of north-eastern Poland caused significant decrease of soil bulk density, increase of available water capacity and readily available water capacity. Statistically significant differences between examined soil properties were observed in most studied years.

scholarly journals Rewetting strategies to reduce nitrous oxide emissions from European peatlands

2020 ◽  
Vol 1 (1) ◽  
Author(s):  
Haojie Liu ◽  
Nicole Wrage-Mönnig ◽  
Bernd Lennartz
Keyword(s):  
Carbon Dioxide ◽  
Nitrous Oxide ◽  
Bulk Density ◽  
Peat Soil ◽  
Soil Bulk Density ◽  
Nitrous Oxide Emissions ◽  
The Status ◽  
Suggested Strategy ◽  
Peatland Rewetting ◽  
Business As Usual

Abstract Nitrous oxide (N2O) is approximately 265 times more potent than carbon dioxide (CO2) in atmospheric warming. Degraded peatlands are important sources of N2O. The more a peat soil is degraded, the higher the N2O-N emissions from peat. In this study, soil bulk density was used as a proxy for peat degradation to predict N2O-N emissions. Here we report that the annual N2O-N emissions from European managed peatlands (EU-28) sum up to approximately 145 Gg N year−1. From the viewpoint of greenhouse gas emissions, highly degraded agriculturally used peatlands should be rewetted first to optimally reduce cumulative N2O-N emissions. Compared to a business-as-usual scenario (no peatland rewetting), rewetting of all drained European peatlands until 2050 using the suggested strategy reduces the cumulative N2O-N emissions by 70%. In conclusion, the status of peat degradation should be made a pivotal criterion in prioritising peatlands for restoration.

Evaluation of soil physical quality of irrigated agroecosystems in a semi-arid region of North-eastern Brazil

Soil Research ◽  
2012 ◽  
Vol 50 (6) ◽  
pp. 455 ◽  
Author(s):  
V. P. Pereira ◽  
M. E. Ortiz-Escobar ◽  
G. C. Rocha ◽  
R. N. Assis Junior ◽  
T. S. Oliveira
Keyword(s):  
Bulk Density ◽  
Soil Bulk Density ◽  
Natural Vegetation ◽  
Water Retention Curve ◽  
Retention Curve ◽  
Physical Quality ◽  
Soil Physical Quality ◽  
Eastern Brazil ◽  
North Eastern

Concern about soil physical quality has grown in recent years, particularly in view of serious problems caused by intensive soil use. We hypothesised that improper soil management in irrigated areas damages the structure of sensitive soils in some regions in North-eastern Brazil. The aim of the study was to evaluate the physical quality of irrigated soils planted with annual and perennial crops, compared with soils under natural vegetation in Ceará State, Brazil. Measurements were made of least limiting water range (LLWR), the S index, and relative density. Undisturbed soil samples were collected at two depths (5–10 and 20–25 cm) in four cultivated areas (banana, guava, pasture, and maize/bean in succession) and two natural vegetation areas (NV1, NV2) adjacent to the cultivated areas. All sites were in the Jaguaribe-Apodi Irrigated District, Limoeiro do Norte, Ceará, Brazil. The LLWR was determined using the water retention curve, soil resistance to penetration, and soil bulk density, which are parameters needed to obtain the upper and lower limits of LLWR. The S index was obtained from the water retention curve. The relative density was obtained from the relationship between bulk density and maximum density obtained from the Proctor test. The S index varied as a function of soil management. The variation in LLWR differed between the studied areas as a function of soil bulk density. The relative densities for NV1 and NV2 were lower than for cultivated areas, showing that intensive soil use has caused compaction. The studied parameters seem to be good indicators of soil physical quality, and it was noticed that soils under cultivation suffer an alteration of their structure relative to soils under natural vegetation.

Effects of Biogas Residue on Soil Improvement in Peach Orchard

2014 ◽  
Vol 675-677 ◽  
pp. 738-741 ◽  
Author(s):  
Shun Li Wang ◽  
Jian Shan Yang ◽  
Rui Lan Wang ◽  
Rong Qi Li ◽  
Shu Tao Wang ◽  
...  
Keyword(s):  
Soil Fertility ◽  
Bulk Density ◽  
Soil Quality ◽  
Soil Improvement ◽  
Soil Bulk Density ◽  
Humus Acid ◽  
Short Term ◽  
Continuous Application ◽  
Peach Orchard ◽  
Biogas Residue

The aim of the work was to analysis effects of biogas residue continuous application on soil fertility improvment. The results showed that biogas residue addtion to peach orchard improved soil quality. Biogas residue application reduced soil bulk density quickly in a short term, improved soil TP, effctive N and available P contents significantly, as well as promoted soil TOC and humus acid accumulations to imoprove soil fertility. The results provide technical support for biogas utilization.

scholarly journals Land Use Effect on Quality of Plateau Soils: A Case Study of Ososo in Northern Edo State, Nigeria

2021 ◽  
Vol 13 (3) ◽  
Author(s):  
Paul Orobosa Orobator ◽  
Emmanuel Ekpenkhio
Keyword(s):  
Land Use ◽  
Soil Quality ◽  
Secondary Forest ◽  
Land Uses ◽  
Mean Values ◽  
The Status ◽  
Edo State ◽  
Cocoa Plantation

The study examined land use effect on quality of plateau soils, using Ososo in Northern Edo State, Nigeria as a case study. The objectives were to examine the status of soils under the different land uses and evaluate variation in the physicochemical properties of soils among the investigated sites. A total of thirty-six soil samples were collected from secondary forest, cocoa plantation and quarry site at 0 - 15 and 15 - 30 cm depths. Soil quality indicators were analyzed in the laboratory, while data were examined by descriptive and inferential statistics. Due to the effect of mining activities, quarry site had lower mean values of soil organic matter, total organic carbon, total nitrogen, available phosphorous, effective cation exchange capacity, potassium, copper and manganese while iron, zinc and calcium were lower in secondary forest. However, Na and ECEC were higher in cocoa plantation. The study further revealed that though the examined land uses had varied effects on the soil properties; quarry site impacted the soil quality parameters more negatively compared to the secondary forest and cocoa plantation land use types. Significant variation (p < 0.05) in sand, clay and available phosphorous was detected in the topsoil of the different land uses. The research concluded that the status of the soil nutrients was low. To improve the quality of the plateau soils, liming and the use of animal droppings, town refuse ash and plant remains is recommended.

scholarly journals Water retention and s index of an oxisol subjected to weed control methods in a coffee crop

2014 ◽  
Vol 38 (5) ◽  
pp. 471-479 ◽  
Author(s):  
Raphael Henrique da Silva Siqueira ◽  
Mozart Martins Ferreira ◽  
Elifas Nunes de Alcântara ◽  
Bruno Montoani Silva ◽  
Raphael Comanducci Silva
Keyword(s):  
Bulk Density ◽  
Weed Control ◽  
Water Retention ◽  
Total Porosity ◽  
Soil Bulk Density ◽  
Structural Quality ◽  
Control Methods ◽  
Herbicide Application ◽  
Physical Quality

Weed control in different crops affects the chemical, physical, and biological properties of the soil and consequently its structural quality. The objective of this study was to evaluate, using water retention characteristics and the S index, the physical quality of an Oxisol (Red-Yellow Latosol), subjected to weed control during the cultivation of coffee. The following weed control methods were evaluated: harrowing, brushcutting, residue crushing, manual weeding, post-emergence herbicide application, pre-emergence herbicide application, and maintenance of soil cover with peanut forage, Brachiaria grass, and spontaneous vegetation (no weed treatment). The following properties were determined for physical characterization of the soil: bulk density, total porosity, macroporosity, microporosity, water retention, and the S index. The weed control method significantly affected the physical properties and water retention in the subsurface layer of the Oxisol. Soil bulk density, total porosity, macroporosity, and microporosity were significantly correlated with the S index. According to the S index, the physical quality of the soil was classified as very good for the various weed control methods investigated.

scholarly journals SOIL QUALITY ATTRIBUTES RELATED TO URBANIZATION IN BRAZILIAN WATERSHED

2017 ◽  
Vol 25 (4) ◽  
pp. 317-328 ◽  
Author(s):  
Alexandre Marco da SILVA ◽  
Rodrigo Custodio URBAN ◽  
Luiz Augusto MANFRÉ ◽  
Michel BROSSARD ◽  
Marcelo Zacharias MOREIRA
Keyword(s):  
Ecosystem Services ◽  
Land Cover ◽  
Bulk Density ◽  
Soil Quality ◽  
Soil Bulk Density ◽  
Soil Samples ◽  
Subtropical Region ◽  
C Isotopes ◽  
Total Potential ◽  
Physical Chemical

In this study we investigated the variation of soil attributes according to urban-related land cover categories. The study was carried out in an urbanized watershed located in the Brazilian subtropical region (Sorocaba Municipality, São Paulo). Soil samples were collected considering the land cover category for analysis of physical, chemical and isotopic attributes. The land cover influenced the soils attributes. Soils from wooded and grassed areas presented significant differences, especially for values of C isotopes. Soil bulk density was significantly altered. According to considered land cover mosaic in the study, we estimated 10,241.28 tons of C stored in the thickness 20 cm of the watershed (whole area), and this amount is almost a half of the total potential of C storing in the watershed. We stress that projects of planned land cover should effectively implemented in urbanized regions to effectively contribute in storing more C and improving the soil-related ecosystem services.

scholarly journals Effects of Afforestation on Soil Bulk Density and pH in the Loess Plateau, China

Water ◽  
2018 ◽  
Vol 10 (12) ◽  
pp. 1710 ◽  
Author(s):  
Xiaofang Zhang ◽  
Jan Adamowski ◽  
Ravinesh Deo ◽  
Xueyun Xu ◽  
Guofeng Zhu ◽  
...  
Keyword(s):  
Bulk Density ◽  
Soil Quality ◽  
Loess Plateau ◽  
Soil Ph ◽  
Soil Depth ◽  
Soil Bulk Density ◽  
Stand Age ◽  
Clear Understanding ◽  
Sustainable Land Management ◽  
The Loess Plateau

Sustainable land management requires a clear understanding of the changes in soil quality. In exploring whether afforestation has the potential to improve the soil quality in China’s Loess Plateau, soil bulk density ( ρ s ) and pH were compared under five treatments: three forested treatments (16-and 40-year-old apricot stands, and 40-year-old poplar stands), and individual abandoned and cultivated treatments, serving as the controls. Bulk density across the 0–1.0 m soil profile under the 16-year-old apricot treatment (1.12 Mg m−3) and 40-year-old poplar treatment (1.16 Mg m−3) were significantly smaller than their counterparts under the cultivated (1.20 Mg m−3) and abandoned treatments (1.23 Mg m−3). Soil pH of the cultivated treatment (8.46) was significantly lower than that of the abandoned treatment (8.51) or than that of any forested treatment. The ρ s and pH were both affected by stand age, with the ρ s and pH of the 40-year-old apricot treatment being 0.10 Mg m−3 and 0.05 units greater, respectively, than those of the 16-year-old apricot treatment. Treatment and soil depth appeared to interact to influence the ρ s , but this same interaction did not influence the soil pH. This study suggested that afforestation species and stand age should be taken into consideration to harvest maximum benefits from the afforestation efforts.

scholarly journals Comparison of the physical properties of soils belonging to different reference soil groups

2020 ◽  
Vol 16 (No. 1) ◽  
pp. 29-38
Author(s):  
Jan Vopravil ◽  
Pavel Formánek ◽  
Tomáš Khel
Keyword(s):  
Physical Properties ◽  
Bulk Density ◽  
Particle Density ◽  
Total Porosity ◽  
Capillary Water ◽  
Water Capacity ◽  
Available Water Capacity ◽  
Permanent Wilting Point ◽  
Wilting Point ◽  
Soil Groups

Soil properties can be influenced by long-term agricultural management practices as described in pedological literature. In this study, selected physical properties (particle density and bulk density, total porosity, maximum capillary water capacity, minimum air capacity, field capacity, permanent wilting point and available water capacity) of topsoils from different reference soil groups (Cambisols, Luvisols, Fluvisols, Chernozems and Phaeozems, Leptosols, Stagnosols and Gleysols) were sampled and analysed in the years 2016–2017. The topsoil samples were taken from points of so-called S (specific) soil pits to be sampled from the General Soil Survey of Agricultural Soils (GSSAS) which was accomplished in the years 1961–1970. In addition, some of the properties were also compared with those measured during the GSSAS. Recognising the properties, only the particle density, the maximum capillary water capacity, the permanent wilting point and the available water capacity of the topsoil of the individual soil groups were statistically significantly (P &lt; 0.05) different. A comparison of the physical properties with those analysed after more than 40 years was performed, the bulk density increased and the total porosity decreased in the topsoil of the major part of the studied soil groups.

scholarly journals Physical quality of an Oxisol cultivated with maize submited to cover crops in the pre-cropping period

2010 ◽  
Vol 34 (1) ◽  
pp. 211-2178 ◽  
Author(s):  
Fabiana de Souza Pereira ◽  
Itamar Andrioli ◽  
Amauri Nelson Beutler ◽  
Cinara Xavier de Almeida ◽  
Faber de Souza Pereira
Keyword(s):  
Water Content ◽  
Bulk Density ◽  
Cover Crops ◽  
Soil Bulk Density ◽  
Conventional Tillage ◽  
No Tillage ◽  
Physical Quality ◽  
Soil Physical Quality ◽  
Tillage System

The intensive use of land alters the distribution of the pore size which imparts consequences on the soil physical quality. The Least Limiting Water Range (LLWR) allows for the visualization of the effects of management systems upon either the improvement or the degradation of the soil physical quality. The objective of this study was to evaluate the physical quality of a Red Latosol (Oxisol) submited to cover crops in the period prior to the maize crop in a no-tillage and conventional tillage system, using porosity, soil bulk density and the LLWR as attributes. The treatments were: conventional tillage (CT) and a no-tillage system with the following cover crops: sunn hemp (Crotalaria juncea L.) (NS), pearl millet (Pennisetum americanum (L.) Leeke) (NP) and lablab (Dolichos lablab L.) (NL). The experimental design was randomized blocks in subdivided plots with six replications, with the plots being constituted by the treatments and the subplots by the layers analyzed. The no-tillage systems showed higher total porosity and soil organic matter at the 0-0.5 m layer for the CT. The CT did not differ from the NL or NS in relation to macroporosity. The NP showed the greater porosity, while CT and NS presented lower soil bulk density. No < 10 % airing porosity was found for the treatments evaluated, and value for water content where soil aeration is critical (θPA) was found above estimated water content at field capacity (θFC) for all densities. Critical soil bulk density was of 1.36 and 1.43 Mg m-3 for NP and CT, respectively. The LLWR in the no-tillage systems was limited in the upper part by the θFC, and in the bottom part, by the water content from which soil resistance to penetration is limiting (θPR). By means of LLWR it was observed that the soil presented good physical quality.

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