Boron Availability in Relation to Soil Reaction and Organic Matter Content

1946 ◽  
Vol 10 (C) ◽  
pp. 113-116 ◽  
Author(s):  
K. C. Berger ◽  
Emil Truog
Keyword(s):  
Organic Matter ◽  
Organic Matter Content ◽  
Matter Content ◽  
Soil Reaction

Uptake of heavy metals by darnel multifloral (Lolium multiflorum Lam.) at diverse soil reaction and organic matter content

2013 ◽  
Vol 64 (1) ◽  
pp. 19-23 ◽  
Author(s):  
Jolanta Kwiatkowska-Malina ◽  
Alina Maciejewska
Keyword(s):  
Heavy Metals ◽  
Organic Matter ◽  
Lolium Multiflorum ◽  
Organic Matter Content ◽  
Biological Properties ◽  
Matter Content ◽  
Soil Reaction ◽  
Test Plant ◽  
Lead And Zinc ◽  
Cadmium Lead

Abstract Organic matter takes part in all soil processes and influences the physical, chemical and biological properties of soil. The paper presents the analysis of heavy metal contents (Zn, Pb, Cd) in soil and biomass of darnel multifloral (Lolium multiflorum Lam.) cultivated at diverse conditions of soil reaction and organic matter content. A brown coal preparation (Rekulter) was applied as the source of organic matter in autumn 1999 to the studied soil, which was contaminated with cadmium, lead and zinc. The limiting influence of Rekulter on the uptake of heavy metals by darnel multifloral (two cuts of the test plant) was the highest in the case when the largest dose was applied to soil with the highest pH (about 6.0). Bioaccumulation indexes (BI) for Cd, Pb, Zn indicate the mobility and bioavailability of Cd, Pb and Zn in soils. The BI for particular heavy metals were generally low, with the lowest in the case when the largest dose of Rekulter was applied to all cuts of the test plant

Physical and chemical characterization of some selected soils in University of Maiduguri, Borno State Nigeria

2021 ◽  
pp. 32-41
Author(s):  
Buji I.B. ◽  
Adamu I. ◽  
Magaji M.J. ◽  
Hayatu N.G. ◽  
Zubairu A.M. ◽  
...  
Keyword(s):  
Organic Matter ◽  
Crop Production ◽  
Management Practices ◽  
Subsurface Layer ◽  
Organic Matter Content ◽  
Matter Content ◽  
Soil Reaction ◽  
Organic Carbon Content ◽  
Subsurface Layers ◽  
Physical And Chemical

A semi-detailed survey was conducted to characterize some physical and chemical properties of soils of Teaching and Research Farm University of Maiduguri, Borno State. Three sites were selected on the basis of land forms and surface texture and their description were taken using two soil profile pits at each sites. The soils collected were subjected to laboratory analysis using standard procedure. The colour of the soils changes at both surface and subsurface layers within each layer due to reduction in organic matter content down the profile, majority of the topsoil layer were brown while light yellowish orange were found in the subsoil layer.The consistency of the soil changed from hard at the surface layers to soft at subsurface layers. Soil reaction ranged from6.72 to 7.36which is neutral to slightly alkaline at both surface and subsurface layer and the electrical conductivity shows no salinity effect at both surface and subsurface layers. Cation Exchange Capacacity ranged from 10.09 to 15.97 Cmol/kg which was very low. Organic carbon content was generally low to moderate which ranged from 0.2 to 0.60 % due to poor return in organic matter content. The soil texture of the surface and subsurface was predominately sandy loam. Sand content of P2 ranged from 537g/kg to 762 g/kg, silt ranged from 141 (P4) to 441 (P1) g/kg and clay from 72 (P2) and 147 (P4) g/kg. Available phosphorus and potassium tend to be low while sodium was high, magnesium showed to be medium to high, while calcium was also low to medium. Bulk density of the soils, increases with increase in depth and the hydraulic conductivity decreases with increase in depth. The chemical and physical properties of the soil are good for crop production except for sodium that is high, which need some management practices for optimum crop production and as such evaluation on the capability and suitability of the area should be conducted.

scholarly journals PENGARUH BATUAN INDUK DAN KIMIA TANAH TERHADAP POTENSI KESUBURAN TANAH DI KABUPATEN KEPULAUAN SULA, PROVINSI MALUKU UTARA

2020 ◽  
Vol 22 (3) ◽  
pp. 342
Author(s):  
Himawan Bayu Aji ◽  
Amiruddin Teapon
Keyword(s):  
Organic Matter ◽  
Soil Fertility ◽  
Organic Matter Content ◽  
Matter Content ◽  
Source Rocks ◽  
Soil Reaction ◽  
Organic C ◽  
Fertility Status ◽  
Fertility Potential ◽  
Soil Fertility Status

<p align="center"><strong>ABSTRACT</strong></p><p align="center"><strong><em> </em></strong></p><p><strong><em>Effect of Source Rocks and Soil Chemical Towards Land Fertility Potential in Sula Kepulauan District, North Maluku Province.</em></strong><em> </em><em>The study</em><em> aimed to determine the condition of soil fertility potential. Parameters used as the basis of assessment of potential fertility of the soil were the type of </em><em>main rock, weathering processes and mineral content of the native rock while chemically research was emphased on organic matter content, soil pH, CEC, base saturity and essential nutrients (N, P, K). General lithology in the study area </em><em>were grouped </em><em>into rocks and rock volkan sediman. Aluvio-marine sedimentary rocks and aluvio-collovium were deposition materials from a variety of rocks in the study contain</em><em>ed a number of nutrients and organic matter. Meanhile volkan rocks included basalt and andesite-granidiorit neutral to alkaline</em><em>. Contain</em><em>ed elements that produced fertile lands both physically and chemically. Based on the analysis, the average soil</em><em> was classified as slightly acid (pH 5.6). The lower layers of soil reaction on average relatively</em><em> was acidic (pH 5.1). Soil organic matter in the form of organic-C showed the top layer of a low average (1.58%), whilst the layer below average </em><em>was very low (0.83%). CEC soil layers above and below the average were moderate (20.66 me/100 g) and (19.6 me/100 g). Base saturations (KB) to these two layers of soil on top and below the average were</em><em> classified as moderate (55%) and (51%). Levels of nitrogen (N-total) topsoil with layers below average </em><em>are low</em><em> valued (0.18%) and (0.11%). Classified as very low, phosporus level in both layers were above the average which were 5.40 ppm and 3.10 ppm respectively. Potassiums were very low in the second layer of 5.13 mg/100 g and 3.81 mg/100 g. The parameters used to assess soil fertility status were CEC, KB, P2O5 which were extracted with HCl 25%, and K2O was extracted with HCl 25% and C-organic soil. Potential assessment of soil fertility status based on lithology and soil chemistry acquired the status of soil fertility was low.</em><em></em></p><p><strong>Key</strong><strong>words</strong>:<em> </em><em>potential soil fertility, maint rock, chemical</em></p><p><strong><em> </em></strong></p><p align="center"><strong> </strong></p><p align="center"><strong>ABSTRAK</strong></p><p align="center"><strong> </strong></p><p>Kajian ini bertujuan untuk mengetahui kondisi kesuburan tanah potensial. Parameter yang dijadikan dasar penilaian potensi kesuburan tanah adalah jenis, proses pelapukan, dan kandungan mineral batuan induk sedangkan secara kimia penelitian ditekankan pada kandungan bahan organik, pH tanah, KTK, KB, dan unsur hara esensial (N, P, K). Secara umum litologi di wilayah studi dikelompokan ke dalam batuan sediman dan batuan volkan. Batuan sedimen aluvio-marine dan aluvio-koluvium merupakan bahan-bahan endapan dari berbagai batuan di wilayah studi yang banyak mengandung unsur hara dan bahan organik. Batuan volkan meliputi andesit-basal dan granidiorit bersifat netral sampai basa, mengandung unsur-unsur yang menghasilkan tanah-tanah subur baik secara fisik maupun kimia. Berdasarkan hasil analisis tanah pH rata-rata tergolong agak masam (pH 5,6). Lapisan bawah reaksi tanah rata-rata tergolong masam (pH 5,1). Bahan organik tanah dalam bentuk C-organik menunjukkan pada lapisan atas rata-rata rendah (1,58%), sementara lapisan bawah rata-rata sangat rendah (0,83%). KTK tanah lapisan atas maupun bawah rata-rata tergolong sedang (20,7 me/100 gram) dan (19,6 me/100 gram). Kejenuhan basa (KB) tanah pada keduan lapisan atas dan bawah rata-rata tergolong sedang yaitu (55%) dan (51%). Kadar nitrogen (N-total) tanah lapisan atas sama dengan lapisan bawah rata-rata tergolong rendah (0,18%) dan (0,11%). Kadar fosor (P<sub>2</sub>O<sub>5</sub>) tergolong sangat rendah, di kedua lapisan atas rata-rata sebesar 5,40 dan 3,10 me/100g. Unsur hara kalium (K<sub>2</sub>O) sangat rendah pada kedua lapisan 5,13 mg/100 gram dan 3,81 mg/100 gram. Parameter yang digunakan untuk menilai status kesuburan tanah yaitu KTK, KB, P<sub>2</sub>O<sub>5</sub> yang diesktrak dengan HCl 25%, sedangkan K<sub>2</sub>O diekstrak dengan HCl 25% dan C-organik tanah. Penilaian potensi status kesuburan tanah berdasarkan litologi dan kimia tanah diperoleh status kesuburan tanah tergolong rendah.</p><p><strong>Kata </strong><strong>k</strong><strong>unci: </strong><em>kesuburan tanah potensial, batuan induk, kimia</em></p><em></em>

HEAVY METAL SPECIATION IN BOTTOM SEDIMENTS OF THE VYSHNEVOLOTSKY RESERVOIR

2018 ◽  
pp. 46-54
Author(s):  
O. A. Lipatnikova
Keyword(s):  
Heavy Metal ◽  
Organic Matter ◽  
Bottom Sediments ◽  
Metal Speciation ◽  
Organic Matter Content ◽  
Water Reservoir ◽  
Matter Content ◽  
Heavy Metal Speciation ◽  
Mobile Forms ◽  
Manganese Hydroxides

The study of heavy metal speciation in bottom sediments of the Vyshnevolotsky water reservoir is presented in this paper. Sequential selective procedure was used to determine the heavy metal speciation in bottom sediments and thermodynamic calculation — to determine ones in interstitial water. It has been shown that Mn are mainly presented in exchangeable and carbonate forms; for Fe, Zn, Pb и Co the forms are related to iron and manganese hydroxides is played an important role; and Cu and Ni are mainly associated with organic matter. In interstitial waters the main forms of heavy metal speciation are free ions for Zn, Ni, Co and Cd, carbonate complexes for Pb, fulvate complexes for Cu. Effects of particle size and organic matter content in sediments on distribution of mobile and potentially mobile forms of toxic elements have been revealed.

Physico-Chemical Properties of Soil Collected from Chandrabhaga River in Kalmeshwar, Nagpur, Maharashtra

2020 ◽  
Vol 07 (02) ◽  
pp. 1-3
Author(s):  
Amita M Watkar ◽  
Keyword(s):  
Organic Matter ◽  
Soil Quality ◽  
Agricultural Land ◽  
Organic Matter Content ◽  
Chemical Properties ◽  
Matter Content ◽  
Soil Attributes ◽  
Essential Components ◽  
Agricultural Land Management ◽  
Physical And Chemical

Soil, itself means Soul of Infinite Life. Soil is the naturally occurring unconsolidated or loose covering on the earth’s surface. Physical properties depend upon the amount, size, shape, arrangement, and mineral composition of soil particles. It also depends on the organic matter content and pore spaces. Chemical properties depend on the Inorganic and organic matter present in the soil. Soils are the essential components of the environment and foundation resources for nearly all types of land use, besides being the most important component of sustainable agriculture. Therefore, assessment of soil quality and its direction of change with time is an ideal and primary indicator of sustainable agricultural land management. Soil quality indicators refer to measurable soil attributes that influence the capacity of a soil to function, within the limits imposed by the ecosystem, to preserve biological productivity and environmental quality and promote plant, animal and human health. The present study is to assess these soil attributes such as physical and chemical properties season-wise.

scholarly journals Soil nitrogen supply of peat grasslands estimated by degree days and soil organic matter content

2020 ◽  
Vol 117 (3) ◽  
pp. 351-365
Author(s):  
J. Pijlman ◽  
G. Holshof ◽  
W. van den Berg ◽  
G. H. Ros ◽  
J. W. Erisman ◽  
...  
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Soil Nitrogen ◽  
Organic Matter Content ◽  
Matter Content ◽  
Nitrogen Supply ◽  
Degree Days ◽  
Soil Organic Matter Content ◽  
Soil Nitrogen Supply

scholarly journals Effect of Clay, Soil Organic Matter, and Soil pH on Initial and Residual Weed Control with Flumioxazin

Agronomy ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1326
Author(s):  
Calvin F. Glaspie ◽  
Eric A. L. Jones ◽  
Donald Penner ◽  
John A. Pawlak ◽  
Wesley J. Everman
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Weed Control ◽  
Soil Ph ◽  
Organic Matter Content ◽  
Amaranthus Retroflexus ◽  
Matter Content ◽  
Weed Species ◽  
Soil Organic Matter Content ◽  
Field Soils

Greenhouse studies were conducted to evaluate the effects of soil organic matter content and soil pH on initial and residual weed control with flumioxazin by planting selected weed species in various lab-made and field soils. Initial control was determined by planting weed seeds into various lab-made and field soils treated with flumioxazin (71 g ha−1). Seeds of Echinochloa crus-galli (barnyard grass), Setaria faberi (giant foxtail), Amaranthus retroflexus (redroot pigweed), and Abutilon theophrasti (velvetleaf) were incorporated into the top 1.3 cm of each soil at a density of 100 seeds per pot, respectively. Emerged plants were counted and removed in both treated and non-treated pots two weeks after planting and each following week for six weeks. Flumioxazin control was evaluated by calculating percent emergence of weeds in treated soils compared to the emergence of weeds in non-treated soils. Clay content was not found to affect initial flumioxazin control of any tested weed species. Control of A. theophrasti, E. crus-galli, and S. faberi was reduced as soil organic matter content increased. The control of A. retroflexus was not affected by organic matter. Soil pH below 6 reduced flumioxazin control of A. theophrasti, and S. faberi but did not affect the control of A. retroflexus and E. crus-galli. Flumioxazin residual control was determined by planting selected weed species in various lab-made and field soils 0, 2, 4, 6, and 8 weeks after treatment. Eight weeks after treatment, flumioxazin gave 0% control of A. theophrasti and S. faberi in all soils tested. Control of A. retroflexus and Chenopodium album (common lambsquarters) was 100% for the duration of the experiment, except when soil organic matter content was greater than 3% or the soil pH 7. Eight weeks after treatment, 0% control was only observed for common A. retroflexus and C. album in organic soil (soil organic matter > 80%) or when soil pH was above 7. Control of A. theophrasti and S. faberi decreased as soil organic matter content and soil pH increased. Similar results were observed when comparing lab-made soils to field soils; however, differences in control were observed between lab-made organic matter soils and field organic matter soils. Results indicate that flumioxazin can provide control ranging from 75–100% for two to six weeks on common weed species.

scholarly journals Assessment of Potato Farmland Soil Nutrient Based on MDS-SQI Model in the Loess Plateau

2021 ◽  
Vol 13 (7) ◽  
pp. 3957
Author(s):  
Yingying Xing ◽  
Ning Wang ◽  
Xiaoli Niu ◽  
Wenting Jiang ◽  
Xiukang Wang
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Soil Fertility ◽  
Soil Quality ◽  
Soil Nutrients ◽  
Organic Matter Content ◽  
Soil Nutrient ◽  
Matter Content ◽  
Soil Organic Matter Content ◽  
Farmland Soil

Soil nutrients are essential nutrients provided by soil for plant growth. Most researchers focus on the coupling effect of nutrients with potato yield and quality. There are few studies on the evaluation of soil nutrients in potato fields. The purpose of this study is to investigate the soil nutrients of potato farmland and the soil vertical nutrient distributions, and then to provide a theoretical and experimental basis for the fertilizer management practices for potatoes in Loess Plateau. Eight physical and chemical soil indexes were selected in the study area, and 810 farmland soil samples from the potato agriculture product areas were analyzed in Northern Shaanxi. The paper established the minimum data set (MDS) for the quality diagnosis of the cultivated layer for farmland by principal component analysis (PCA), respectively, and furthermore, analyzed the soil nutrient characteristics of the cultivated layer adopted soil quality index (SQI). The results showed that the MDS on soil quality diagnosis of the cultivated layer for farmland soil included such indicators as the soil organic matter content, soil available potassium content, and soil available phosphorus content. The comprehensive index value of the soil quality was between 0.064 and 0.302. The SPSS average clustering process used to classify SQI was divided into three grades: class I (36.2%) was defined as suitable soil fertility (SQI < 0.122), class II (55.6%) was defined as moderate soil fertility (0.122 < SQI < 0.18), and class III (8.2%) was defined as poor soil fertility (SQI > 0.186). The comprehensive quality of the potato farmland soils was generally low. The proportion of soil nutrients in the SQI composition ranged from large to small as the soil available potassium content = soil available phosphorus content > soil organic matter content, which became the limiting factor of the soil organic matter content in this area. This study revolves around the 0 to 60 cm soil layer; the soil fertility decreased gradually with the soil depth, and had significant differences between the respective soil layers. In order to improve the soil nutrient accumulation and potato yield in potato farmland in northern Shaanxi, it is suggested to increase the fertilization depth (20 to 40 cm) and further study the ratio of nitrogen, phosphorus, and potassium fertilizer.

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