Estimating Soil Organic Matter: A Case Study of Soil Physical Properties for Environment-Related Issues in Southeast Nigeria

2021 ◽  
Author(s):  
Kokei Ikpi Ofem ◽  
Kingsley John ◽  
Mark Pawlett ◽  
Michael Otu Eyong ◽  
Chukwuebuka Edwin Awaogu ◽  
...  
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Physical Properties ◽  
Soil Physical Properties

Influence of compost on the physical properties and organic matter fractions of a fine sandy loam throughout the cycle of a potato rotation

2004 ◽  
Vol 84 (2) ◽  
pp. 211-218 ◽  
Author(s):  
M. R. Carter ◽  
J. B. Sanderson ◽  
J. A. MacLeod
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Physical Properties ◽  
Particulate Organic Matter ◽  
Sandy Loam ◽  
Red Clover ◽  
Soil Physical Properties ◽  
Fine Sandy Loam ◽  
Organic Matter Fractions ◽  
Potato Rotation

Potato (Solanum tuberosum L.) rotations often require organic amendments to maintain or improve soil organic matter levels and soil physical properties. However, beneficial effects of compost can be modified by time of application and rotating tillage depth and intensity. This study was conducted to evaluate the effect of compost applied once at different phases in a 3-yr potato, barley (Hordeum vulgare L.), and red clover (Trifolium pretense L.) rotation on a range of soil physical properties and organic matter fractions for a Charlottetown fine sandy loam (Orthic Humo-Ferric Podzol) in Prince Edward Island. Soil samples (0–8 cm) were obtained during the second cycle of the rotation (after two compost applications) in the fifth year of the experiment. Soil properties were influenced by compost addition, time of compost addition, and crop phase. Compost-induced benefits in soil physical properties (bulk density, macro-porosity, oxygen diffusion rate, shear vane strength, water-filled pore space) were mainly expressed in the red clover phase of the rotation, where soil density was relatively high compared to the barley and potato phases, due to the absence of tillage. The soil physical parameters, however, were mainly within their established optimum ranges for this soil type. Soil water content at −0.033 MPa was increased by compost in the potato phase, compared to the control. Soil organic matter was influenced by both compost and crop C inputs. Compost increased soil particulate organic matter (POM) in the potato and barley phases. Due to differences in crop residue inputs, compost-related differences in organic matter were minimized in the red clover phase of the rotation. Compost addition increased potato tuber yield above the maximum yield obtained with nitrogen application. This “non-nitrogen” compost yield effect may be related to the slight, but significant, improvement in soil water-holding capacity. Overall , compost application in an intensive 3-yr potato rotation provided benefits for potato productivity and in both soil physical and biological properties. Key words: Soil organic carbon, particulate organic matter, soil physical properties, compost amendment, potato yield, eastern Canada

scholarly journals Pengaruh Penggunaan Beberapa Jenis Mulsa terhadap Sifat Fisik Tanah dan Laju Pertumbuhan Tanaman Tomat (Lycopersicum Esculentum L)

2021 ◽  
Vol 9 (1) ◽  
pp. 1
Author(s):  
I Kadek Dwi Adi Saputra ◽  
I Wayan Tika ◽  
Ni Luh Yulianti
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Physical Properties ◽  
Rice Straw ◽  
Soil Physical Properties ◽  
Soil Porosity ◽  
Plastic Mulch ◽  
Tomato Plants ◽  
Straw Mulch ◽  
Average Value

ABSTRAK Pengolahan tanah secara intensif tanpa memperhatikan faktor-faktor yang mempengaruhinya antara lain kurangnya unsur hara, pemupukan yang tidak berimbang dapat menurunkan kualitas sifat fisik tanah. Oleh karena itu dibutuhkan pengolahan tanah agar sesuai dengan syarat tumbuh tanaman tomat. Penggunaan berbagai jenis mulsa pada tanaman tomat diharapkan mampu menciptakan iklim mikro yang sesuai bagi tanaman, memperbaiki sifat fisik tanah antara lain bahan organik tanah, permeabilitas, porositas tanah dan laju pertumbuhan, melancarkan pendauran hara dalam sistem tanah, air, tanaman dan memperbaiki ketersediaan hara bagi tanaman. Tujuan penelitian ini adalah untuk mengetahui perubahan sifat fisik tanah akibat penggunaan jenis mulsa sejalan dengan usia tanaman tomat dan mengetahui pengaruh penggunaan jenis mulsa terhadap laju pertumbuhan tanaman tomat. Penelitian ini dilakukan dengan rancangan acak lengkap dengan perlakuan tanpa mulsa, mulsa plastik perak, mulsa plastik hitam, mulsa plastik UV transparan, dan mulsa jerami padi. Setiap perlakuan diulang sebanyak tiga kali sehingga terdapat 15 plot. Hasil penelitian menunjukkan bahwa kadar air tanah 2 MST 13-35%, 4MST 20-42%, 6MST 23-44%, 8MST 27-51%, 10MST 26-53%, 12MST 32-63%. Rata-rata bahan organik tanah 1,16% dengan kategori rendah. Rata-rata permeabilitas tanah 4,13 cm/jam dengan kategori lambat sampai sedang. Perlakuan tanpa mulsa berpengaruh nyata pada porositas tanah dengan nilai rata-rata 48% pada kelas kurang baik. Rata-rata nilai jumlah daun pada perlakuan mulsa plastik perak 122.89 helai dan pada perlakuan jerami padi 124.83 helai. Nilai berat kering tanaman tomat pada perlakuan mulsa jerami padi 205.87 gram dan pada perlakuan mulsa plastik UV transparan 118.33 gram. ABSTRACT Soil processing intensively without paying attention to factors that affect it such as the lack of nutrients, unbalance fertilization decreases the physical quality of the soil. Therefore, soil processing is necessary to the growing condition of the tomato plants. The use of various types of mulch on tomato plants is expected to create a microclimate that suitable for plants, improve soil physical properties including soil organic matter, permeability, soil porosity, and growth rate, reinforce nutrient cycling in the soil, water, plant system and improve nutrient availability for plants. The aims of the research are to determine the changes in soil physical properties due to the use of mulch types in line with the age of tomato plants and determine the effect of the use of mulch types on the rate of growth of tomato plants. This research is conducted with a completely randomized design with treatment without mulch, silver plastic mulch, black plastic mulch, transparent UV plastic mulch, and rice straw mulch. Each handling 15 times.  The results show that the groundwater content of 2 MST was 13-35%, 4MST 20-42%, 6MST 23-44%, 8MST 27-51%, 10MST 26-53%, 12MST 32-63%.  Average soil organic matter 1.16% with low category.  The average permeability of land is 4.13 cm/hour in the slow to moderate category. Treatment without mulch significantly affected the soil porosity with an average value of 48% in the less grade.  The average value of the number of leaves in the silver plastic mulch treatment 122.89 strands and 124.83 strands of rice straw.  The dry weight value of tomato plants in the treatment of rice straw mulch 205.87 grams and in the treatment of transparent UV plastic mulch 118.33 grams.

A soil carbon index to gauge soil health in England and Wales

2020 ◽  
Author(s):  
Jonah Prout ◽  
Keith Shepherd ◽  
Steve McGrath ◽  
Guy Kirk ◽  
Stephan Haefele
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Organic Carbon ◽  
Physical Properties ◽  
Soil Structure ◽  
Soil Health ◽  
Clay Content ◽  
Soil Physical Properties ◽  
Arable Soils ◽  
England And Wales

<p>Soil organic carbon (SOC) is a key indicator of soil health, however, guideline values which indicate degradation and good status have been difficult to define. For soils in England and Wales, indicative management ranges were developed using ranges of SOC from the National Soil Inventory of England and Wales (NSI) for precipitation and clay content classes (Verheijen et al., 2005). Soils with higher clay content are often expected to have higher SOC content and this was evident in the management ranges. SOC interacts with clay particles through surface interactions and this, alongside occlusion in aggregates, is suggested to help protect SOC from decomposition and loss (Dungait et al., 2012). The management ranges, however, lacked a mechanistic perspective such that these might not be optimal ranges for soil physical properties and soil structure.</p><p>We have used the NSI to investigate how thresholds of clay/SOC might be used to assess SOC status. A clay/SOC ratio of 10 was proposed as a clay-SOC association capacity derived from correlations with soil physical properties (Dexter et al., 2008) and a further two thresholds (clay/SOC = 8 and 13) were proposed to indicate very good and degraded soil structural quality alongside the original threshold (Johannes et al., 2017). Comparing the distribution of soils under different land uses with the clay/SOC threshold ranges gave an increasing quality trend of arable << ley grassland < permanent grassland ≈ forest. The results suggested that 37% of arable soils would be considered degraded compared with 6% for grassland soils.</p><p>We have used the thresholds to define an index on a scale where negative values indicate degraded soils, and positive values (up to 1) suggest increasing quality beyond which a soil is considered very good. Data from the Woburn ley-arable rotation experiment (Johnston et al., 2017) have also been evaluated with this index to see how the index value might change with time under different managements. As a quantitative metric for SOC, this could form a monitoring framework and feed into other soil health schemes to assess a soil with respect to a clay-interaction capacity and expected soil quality.</p><p> </p><p>References</p><p>Dexter et al. (2008). Complexed organic matter controls soil physical properties. <em>Geoderma</em>, <em>144</em>(3–4), 620–627.</p><p>Dungait et al. (2012). Soil organic matter turnover is governed by accessibility not recalcitrance. <em>Global Change Biology</em>, <em>18</em>, 1781–1796.</p><p>Johannes et al. (2017). Optimal organic carbon values for soil structure quality of arable soils. Does clay content matter? <em>Geoderma</em>, <em>302</em>, 111.</p><p>Johnston et al. (2017). Changes in soil organic matter over 70 years in continuous arable and ley-arable rotations on a sandy loam soil in England. <em>European Journal of Soil Science</em>, <em>68</em>, 305-316.</p><p>Verheijen et el. (2005). Organic carbon ranges in arable soils of England and Wales. <em>Soil Use and Management</em>, <em>21</em>, 2–9.</p>

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.

scholarly journals Optimum Weed Control Method Increases the Yield of Kinnow by Improving the Physical Properties of Soil

2018 ◽  
Vol 36 (0) ◽  
Author(s):  
M. SAJID ◽  
S. AHMAD ◽  
M.J. JASKANI ◽  
M. YASIN
Keyword(s):  
Organic Matter ◽  
Physical Properties ◽  
Weed Control ◽  
Control Method ◽  
Wood Chip ◽  
Soil Physical Properties ◽  
Shoot Length ◽  
Plastic Mulch ◽  
Chlorophyll Contents ◽  
Spad Value

ABSTRACT: Going towards sustainable fruit culture, it is very important that soil fertility should maintain by adopting the proper weeds control and adding the organic matter. This research was carried out to identify the most suitable weed control method for Kinnow orchard. The plants of Kinnow at the age of 6 years grown under drip irrigation were selected. Weeds of orchard were managed by mulching (wood chip and black polyethylene), mechanical (cultivator and rotavator) and chemical (glyphosate) methods. Mechanical weed control was taken as control treatment. The plants where wood chip mulching was used for weed control showed maximum increase in shoot length (24.00 cm), chlorophyll contents (84.00 SPAD value) and yield (11.88 ton ha-1) followed by the plants where weeds were controlled with chemical control while lowest shoot length (12.00 and 12.33 cm), chlorophyll contents (41.00 and 42.67 SPAD value) and yield (3.80 and 4.70 ton) was achieved in cultivator and rotavator treatment respectively. Wood chip mulch also improved soil physical properties by reducing bulk density (1.49 Mg m-3), soil penetration resistance (785.33 kPa) and by enhancing soil organic matter (1.17%), hydraulic conductivity (34.50 mm/hr-1) and soil microbial biomass carbon (159.68 g kg-1) followed by glyphosate control while lowest values of soil physical properties were obtained in cultivator and rotavator weed control. Wood chip mulch also reduced weed dry weight (45.25 g) and efficiently controlled weeds (95.66%) as compared to other weed control methods. In this case, wood chip mulch performed better in all studied parameters than plastic mulch, rotavator, cultivator and glyphosate weed control. So, wood chip mulch should be recommended to citrus grower for improving soil physical properties and yield.

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