Dynamics of soil physical-chemical properties and organic carbon content along a restoration chronosequence inPinus tabulaeformisplantations

A laboratory experiment was conducted in Soil Science Division of Bangladesh Rice Research Institute (BRRI) during 2010-11 aimed to determine the effects of different industrial effluents on some soil chemical properties under long-term industrial wastewater irrigated rice field. Effluents irrigation created some differences in soil pH, electrical conductivity and organic carbon. The pH in all soil depth was higher with wastewater irrigated rice field. Irrigation with wastewater increased in all the effluents irrigated rice fields; the electrical conductivity (EC) was remarkable higher with all soil depth than the control field. In all the rice fields soil (Control + effluents irrigated fields), the organic carbon content (%) started to decrease sharply with the increase in soil depth. Organic carbon content was slightly higher with wastewater irrigated rice soils. Exchangeable cations (Ca, Mg, K and Na), trace elements (Zn, Fe, Mn and Cu) and heavy metals (Pb, Cd, Cr and Ni) were increased through irrigation with wastewater in rice–rice cropping pattern.

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Effect of Mineral and Humic Substances on Tailing Soil Properties and Nutrient Uptake by Pennisetum purpureum Schumach

Journal of Tropical Soils ◽

10.5400/jts.2015.v20i2.101-109 ◽

2016 ◽

Vol 20 (2) ◽

pp. 101

Author(s):

Adhe Phoppy Wira Etika ◽

Rahmat Hasan

Keyword(s):

Organic Carbon ◽

Soil Organic Carbon ◽

Carbon Content ◽

Humic Substances ◽

Chemical Properties ◽

Pennisetum Purpureum ◽

Mineral Matter ◽

Organic Carbon Content ◽

Humic Material ◽

Humic Materials

Tin mining produces a by-product sand tailing from soil leaching with characteristic low pH and total organic carbon, and can be reclaimed by providing a suitable ameliorant. When available in situ, ameliorant materials can be economically used as they are required in large amounts. Fortunately, Bangka Belitung has sample stock of such kaolinite-rich minerals that can be utilized for improving soil chemical properties. Extracted organic materials, such as humic substances, can also be utilized as they influence the complex soil reactions, and promote plant growth. Thus, this study aimed to assess the effects of mineral, humic materials and interaction of both material on soil chemical properties and nutrient uptake of Pennisetum purpureum Schumach. A completely randomized design with 2 factors and 3 replications each was employed. Factor 1 was mineral matter is 0; 420; 840; 1.260 Mg ha-1 while Factor 2 was humic material is 0; 0.46; 0.92; 1.38 kg C ha-1. Air-dried samples of tailing were applied with oil palm compost then mixed evenly with mineral and humic materials. Penissetum purpureum Schumach was planted after 4 weeks incubation, and maintained for another 4 weeks. The results demonstrated that the addition of mineral matter significantly increased soil organic carbon content, total N, exchangeable K, Fe, Mn and boosted nutrient - total Ca, Mg and Mn – uptake of the plant. But the application of humic material increased only soil organic carbon content. The interaction of both materials only lowered soil pH.

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Influence of Grasscover in Restoring the Properties of Eroded Soils of Umudike, Southeastern, Nigeria

American International Journal of Agricultural Studies ◽

10.46545/aijas.v3i1.164 ◽

2020 ◽

Vol 3 (1) ◽

pp. 33-50

Author(s):

Onwuchekwa Ojimgba

Keyword(s):

Organic Matter ◽

Organic Carbon ◽

Carbon Content ◽

Chemical Properties ◽

Bare Soil ◽

Paspalum Notatum ◽

Panicum Maximum ◽

Organic Carbon Content ◽

Research Attention ◽

Organic C

The influence of grasscover in restoring the eroded soils was carried out in Umudike, Southestern Nigeria. The use of grass has attracted considerable research attention with respect to forage production and erosion control. Little information is available on the influence of this grasscover management on soil physical and chemical properties. Four different grasses namely: Paspalum notatum(PN), Panicum maximum(PM), Axonopus compressus(AC) and Vetiver grass(VG)- Vetiveria zizanioid/es) were used in this study and their influence on eroded soil tested in two locations. This study has shown that the soils planted with the grasses gave significantly (p<0.05) higher results of the physical and some chemical properties than their adjacent open bare soil. In all the parameters considered in this study, the values obtained in soils under Paspalum notatum was higher than those obtained in PM, AC, VG and their adjacent bare soils(BS). The soils under PN had generally lower bulk density, higher total porosity and hydraulic conductivity than other grasses and adjacent open bare soil in both locations. The soil under PN proved best, outperforming PM, VG,and AC in stabilizing soil aggregates. Planting of PN on eroded soil significantly (p<0.05) increased the mean weight diameter from 0.77mm (BSPN1) to 1.31mm (PN1) and 0.82mm (BSPN2) to 1.48mm (PN2) for Locations 1 and 2, respectively. The relative improvement in Location 1 was in the order : PN1>AC1=VG1>PM1>BSVG1=BSPN1>BSAC1=BSPM1. Also, soils under PN had significantly higher values of pH, organic C and organic matter, total nitrogen and available P more than other grasses and their adjacent open soils. The magnitude of increase in Location 1 was in the order : PN1>AC1>PM1=VG1>BSVG1=BSPN1=BSAC1>BSPM1. Location 2 also increased in the same trend. The organic carbon content of PN increased from 0.73%(BSPN1) to 2.89%(PN1) and 0.88%(BSPN2) to 2.91%(PN2) in Locations 1 and 2, respectively. Also, the organic matter content of the soil increased in the same trend as organic carbon content.

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Phytoavailability of Cd, Cr, Cu, Hg, Mn, Mo, Ni, Pb, Tl and Zn in Arable Crop Systems Amended for 13 to 15 Years with Organic Waste Products

Agronomy ◽

10.3390/agronomy11040664 ◽

2021 ◽

Vol 11 (4) ◽

pp. 664

Author(s):

Aurélia Marcelline Michaud ◽

Valérie Sappin-Didier ◽

Philippe Cambier ◽

Christophe Nguyen ◽

Noémie Janot ◽

...

Keyword(s):

Organic Carbon ◽

Soil Organic Carbon ◽

Carbon Content ◽

Organic Waste ◽

Field Experiments ◽

Chemical Properties ◽

Growth Stages ◽

Organic Carbon Content ◽

Waste Products ◽

Soil Organic Carbon Content

Repeated applications of organic waste products (OWP) are a source of trace elements (TE) inputs to agricultural topsoils. The present study aimed at (i) assessing the effects of repeated OWP inputs on the chemical properties of topsoils in two long-term field experiments (13 and 15 years; calcareous and non-calcareous soils), (ii) evaluating TE phytoavailability and their transfer to grain (winter wheat and maize) and (iii) identifying the underlying factors causing alterations of TE phytoavailability. In both field experiments, receiving compliant or slightly high doses of OWP in compliance with regulations, OWP and soil physicochemical properties and TE concentrations in soils and grains were determined. In situ phytoavailability of TE was assessed at two juvenile crop growth stages by analyzing TE concentrations in shoot plantlets. Depending on the OWP input amount, results showed that compared to the soil receiving no organic amendment, repeated OWP inputs significantly increased soil organic carbon content, pH, cation exchange capacity, total soil Cu, Mo and Zn concentration and the phytoavailability of Mo, while the phytoavailability of Cd, Mn, Ni and Tl was significantly reduced. No notable effect was observed for Cr, Cu, Hg, Pb and Zn phytoavailability. Statistical approaches suggested that due to the repeated OWP applications, increased soil organic carbon content and pH, were likely responsible for decreased TE phytoavailability (e.g., Cd).

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Direct and Residual Effect of Integrated Nitrogen Management on Physico-Chemical Properties of Soil

International Journal of Environment and Climate Change ◽

10.9734/ijecc/2021/v11i330379 ◽

2021 ◽

pp. 84-99

Author(s):

D. K. D. Deekshitha ◽

Sujani Rao, Ch ◽

P. V. Subbaiah ◽

M. Martin Luther ◽

V. Srinivasa Rao

Keyword(s):

Organic Carbon ◽

Carbon Content ◽

Chemical Properties ◽

Residual Effect ◽

Nitrogen Management ◽

Organic Carbon Content ◽

Kharif Season ◽

Physico Chemical ◽

Integrated Nitrogen Management ◽

Properties Of Soil

Aim: To find out the direct and residual effect of integrated nitrogen management on physico-chemical properties of soil under rice – maize cropping system. Study Design: The experiment was laid out in randomized block design during kharif season and in split plot design during rabi crop. Place and Duration of Study: At Agricultural college farm, Bapatla during 2018-19 and 2019-20 in Kharif and rabi seasons. Methodology: After the preliminary layout, paddy was sown in kharif and maize was sown in rabi season. Vermicompost and green leaf manure were applied two weeks before sowing of paddy. Treatments applied for paddy were considered as main plots and each one divided into two sub plots during rabi. Results: Applications of different treatments did not show any significant difference in physico-chemical properties of soil (pH and EC) at all the growth stages of rice and maize during both the years of study. Application of 75% RDN through green leaf manure + 25% RDN through inorganics (T5) to rice during kharif significantly improved organic carbon in both kharif and rabi seasons whereas different levels of fertilizers applied have not shown an significant influence on soil organic carbon content. Conclusion: Application of inorganic fertilizers, organic manures and their combination didn’t show marked difference on physico-chemical properties of soil like pH and EC. However substitution of 75% N through GLM in kharif season significantly improved OC content in soil during both kharif and rabi and organic carbon content was not influenced by the level of fertilizers from 50% RDF (S1) to100% RDF (S2).

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Influence of Grasscover in Restoring the Properties of Eroded Soils of Umudike, Southeastern, Nigeria

American International Journal of Agricultural Studies ◽

10.46545/aijas.v3i1.13 ◽

2020 ◽

pp. 33-50

Keyword(s):

Organic Matter ◽

Organic Carbon ◽

Carbon Content ◽

Chemical Properties ◽

Bare Soil ◽

Paspalum Notatum ◽

Panicum Maximum ◽

Organic Carbon Content ◽

Research Attention ◽

Organic C

The influence of grasscover in restoring the eroded soils was carried out in Umudike, Southestern Nigeria. The use of grass has attracted considerable research attention with respect to forage production and erosion control. Little information is available on the influence of this grasscover management on soil physical and chemical properties. Four different grasses namely: Paspalum notatum(PN), Panicum maximum(PM), Axonopus compressus(AC) and Vetiver grass(VG)- Vetiveria zizanioid/es) were used in this study and their influence on eroded soil tested in two locations. This study has shown that the soils planted with the grasses gave significantly (p<0.05) higher results of the physical and some chemical properties than their adjacent open bare soil. In all the parameters considered in this study, the values obtained in soils under Paspalum notatum was higher than those obtained in PM, AC, VG and their adjacent bare soils(BS). The soils under PN had generally lower bulk density, higher total porosity and hydraulic conductivity than other grasses and adjacent open bare soil in both locations. The soil under PN proved best, outperforming PM, VG,and AC in stabilizing soil aggregates. Planting of PN on eroded soil significantly (p<0.05) increased the mean weight diameter from 0.77mm (BSPN1) to 1.31mm (PN1) and 0.82mm (BSPN2) to 1.48mm (PN2) for Locations 1 and 2, respectively. The relative improvement in Location 1 was in the order : PN1>AC1=VG1>PM1>BSVG1=BSPN1>BSAC1=BSPM1. Also, soils under PN had significantly higher values of pH, organic C and organic matter, total nitrogen and available P more than other grasses and their adjacent open soils. The magnitude of increase in Location 1 was in the order :PN1>AC1>PM1=VG1>BSVG1=BSPN1=BSAC1>BSPM1. Location 2 also increased in the same trend. The organic carbon content of PN increased from 0.73%(BSPN1) to 2.89%(PN1) and 0.88%(BSPN2) to 2.91%(PN2) in Locations 1 and 2, respectively. Also, the organic matter content of the soil increased in the same trend as organic carbon content.

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