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Journal articles on the topic 'Soil units'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Grundey, J. K. "Avoiding pollution from cattle units." Proceedings of the British Society of Animal Production (1972) 1986 (March 1986): 44. http://dx.doi.org/10.1017/s0308229600015555.

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Increasing public interest and more anti-pollution legislation sharpen the need to avoid pollution. Soil, water and air are at risk.Apart from plant nutrient considerations, secondary effects of water-logging and oxygen depletion of the soil can occur. Slurry tankers can cause damage to the field surface by rutting. Some tankers exert pressures of 70 psi on the soil and then are often used on wet soils. Such malpractices create extra costs to rectify extra problems created.

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2

Swanson, David K. "Soil Landform Units for Soil Survey." Soil Horizons 31, no. 1 (1990): 17. http://dx.doi.org/10.2136/sh1990.1.0017.

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3

Fiedler, Sabine, and Reinhold Jahn. "Accumulation soils like “Ockererde”—forgotten soil units in soil-classification systems." Journal of Plant Nutrition and Soil Science 168, no. 6 (2005): 741–48. http://dx.doi.org/10.1002/jpln.200521824.

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4

Webb, T. H., and L. R. Lilburne. "Consequences of soil map unit uncertainty on environmental risk assessment." Soil Research 43, no. 2 (2005): 119. http://dx.doi.org/10.1071/sr04055.

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Soil maps are being applied in modelling of environmental risk at a regional scale. Analysis of soil maps shows that there can be considerable uncertainty in map unit composition with consequent spatial variability in soil properties within map units. Uncertainty of map unit composition arises from a number of factors including map labels that do not reflect the mix of soil types present and imprecise location of map unit boundaries. Usually little, if any, information is supplied as to the extent and magnitude of these uncertainties. In this paper we develop datasets to quantify soil property

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5

Csorba, Ádám, Arwyn Jones, Tamás Szegi, Endre Dobos, and Erika Michéli. "The diagnostic continua of the soils of Europe." Hungarian Geographical Bulletin 71, no. 4 (2022): 313–23. http://dx.doi.org/10.15201/hungeobull.71.4.1.

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Diagnostic horizons, properties and materials are commonly applied building units of national and international soil classification systems. The presence, depth or absence of diagnostic information supports the process of objective soil classification, such as the World Reference Base (WRB). While the diagnostic units and associated descriptive qualifiers convey information that reflect pedogenesis, they also indicate important, and often complex properties that are related to soil fertility and other soil functions. The spatial extent or the continuum of diagnostic information is often differ

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6

Zádorová, Tereza, Daniel Žížala, Vít Penížek, and Aleš Vaněk. "Harmonisation of a large-scale historical database with the actual Czech soil classification system." Soil and Water Research 15, No. 2 (2020): 101–15. http://dx.doi.org/10.17221/41/2019-swr.

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The possibility of the adequate use of data and maps from historical soil surveys depends, to a large measure, on their harmonisation. Legacy data originating from a large-scale national mapping campaign, “Systematic soil survey of agricultural soils in Czechoslovakia (SSS, 1961–1971)”, were harmonised and converted according to the actual system of soil classification and descriptions used in Czechia – the Czech taxonomic soil classification system (CTSCS). Applying the methods of taxonomic distance and quantitative analysis and reclassification of the selected soil properties, the conversion

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7

S., M. Lufega, and M. Msanya B. "Pedological Characterization and Soil Classification of Selected Soil Units of Morogoro District, Tanzania." International Journal of Plant & Soil Science 16, no. 1 (2017): 1–12. https://doi.org/10.9734/IJPSS/2017/32681.

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The study aimed at provision of research information by pedological characterization of soil units of Morogoro District, Tanzania. Three soil units were selected coupled with field reconnaissance survey. Soil pedons were characterized at Kiziwa (KZW-P1), Mkambarani (MKA-P1) and Fulwe (FUL-P1). Pedons were observed to be formed from in-situ weathering of granitic rocks under ustic moisture and iso-hyperthermic temperature regimes. Thirteen soil samples were described and analyzed for physica-chemical and mineralogical properties. KZW-P1 and FUL-P1 had red dark brown sandy clay and gravely clay

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Owonubi, Ayodele. "Evaluation of Physical Characteristics of Soils Derived from Basement Complex Rocks of the Jos Plateau." UMYU Scientifica 1, no. 2 (2022): 39–45. http://dx.doi.org/10.56919/usci.1222.005.

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The physical characteristics of soils to a large extent influences soil productivity. The objective of this study therefore is to evaluate the physical characteristics of soils derived from basement complex rocks of the Jos Plateau. According to the methodology outlined in the Soil Survey manual, the stratification of the study region into three geologic units—granite gneiss, biotite granite, and migmatite—was the first step in the soil research process. Additionally, soil samples were collected from genetic strata and soil profile pits were dug in each of these geologic units. Following stand

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9

Němeček, J., and J. Kozák. "Approaches to the solution of a soil map of the Czech Republic at the scale 1:250 000 using SOTER methodology." Plant, Soil and Environment 49, No. 7 (2011): 291–97. http://dx.doi.org/10.17221/4127-pse.

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Soil map at the scale 1:250 000 was set up by means of transformation of the published and later digitised soil map of theCzechRepublic. The legend to this map reflects a&nbsp;new classification system of Czech soils that can easily be correlated with the reference international classification system FAO-WRB. In the next step this map was converted into the SOTER system, which links the soil cover to the geomorphology. The modification of the original SOTER procedure consisted in the abandoning of the consequent hierarchy geomorphology &ndash; lithology &ndash; soil associations. O

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10

Iticha, Birhanu, Muhammad Kamran, Rui Yan, et al. "The Role of Digital Soil Information in Assisting Precision Soil Management." Sustainability 14, no. 18 (2022): 11710. http://dx.doi.org/10.3390/su141811710.

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Soil information is the basis for the site-specific management of soils. The study aimed to digitize soil information and classify it into soil mapping units (SMUs) using geostatistics. The study area was grouped into 12 SMUs, or management zones. The pH of the soils ranged from 7.3 in SMU2 to 8.6 in SMU5. Most SMUs exhibited low total nitrogen (TN) that could be attributed to very low soil organic carbon (SOC) in the soils. Available phosphorus (AvP) was very low in all the mapping units. The exchangeable K varied between 0.12 cmol(+) kg−1 (SMU7) and 0.95 cmol(+) kg−1 (SMU10). SMU12 was ident

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11

Zhang, H. D., D. S. Yu, Y. L. Ni, L. M. Zhang, and X. Z. Shi. "Matching soil grid unit resolutions with polygon unit scales for DNDC modelling of regional SOC pool." Geoscientific Model Development Discussions 8, no. 3 (2015): 2653–89. http://dx.doi.org/10.5194/gmdd-8-2653-2015.

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Abstract. Matching soil grid unit resolution with polygon unit map scale is important to minimize uncertainty of regional soil organic carbon (SOC) pool simulation as their strong influences on the uncertainty. A series of soil grid units at varying cell sizes were derived from soil polygon units at the six map scales of 1:50 000 (C5), 1:200 000 (D2), 1:500 000 (P5), 1:1 000 000 (N1), 1:4 000 000 (N4) and 1:14 000 000 (N14), respectively, in the Tai lake region of China. Both format soil units were used for regional SOC pool simulation with DeNitrification–DeComposition (DNDC) process-based mo

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12

Owonubi, Ayodele. "Assessment of Chemical Properties of Soils Derived from Basement Complex Rocks of the Jos Plateau." UMYU Scientifica 1, no. 2 (2022): 53–60. http://dx.doi.org/10.56919/usci.1222.007.

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Information on the chemical characteristics of soils is required in the sustainable the management of soil fertility and productivity. The objective of this study was to determine chemical characteristics of basement complex derived soils of the Jos Plateau. Soil study followed the approach in the Soil Survey manual and began by identification of three geologic units: granite gneiss, biotite granite and migmatite. Furthermore, eighteen soil profile pits were dug in each geologic units and eighty-four samples were taken from genetic horizons. Standard laboratory procedures were used to analyze

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Ananko, T. V., M. I. Gerasimova, and N. V. Savitskaya. "Soil maps of cities for the unified digital model of the soil cover of Russia." Dokuchaev Soil Bulletin, no. 121 (December 20, 2024): 200–240. https://doi.org/10.19047/0136-1694-2024-121-200-240.

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The soil cover of cities and towns within their administrative boundaries is composed of soils, more or less modified by the urban environment along with native, agricultural soils and non-soils. For preserving this diversity when introducing these new objects to the unified digital model of the soil cover of Russia, soil maps of 10 “test” cities have been compiled. The cities are located in several natural zones, and are intermediate in terms of their population. Mapping was performed by means of detailed purposeful deciphering, data on mapping units on the original soil map, and recent syste

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B., Lalitha Kumari. "Catalase Enzyme Activity in Sewages, Dairy, Dying Industry Effluents Flooded Soils in Khammam City District, Telangana, India." Biolife 2, no. 4 (2022): 1405–9. https://doi.org/10.5281/zenodo.7227940.

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<strong>ABSTRACT</strong> The catalase enzyme activity in different sewage and industrially polluted and control soil in Khammam town were analyzed during 2015-2016. The minimum and maximum catalase enzyme levels were 0.9 to 1.14 units sewages polluted soils, while this range was 1.10 to 2.6 units in the soil amended with dairy industry waste water flooded soil. The minimum we and maximum range catalase activity was 1.2 to 3.8 units in minimum industry waste water flooded soil. The catalase enzyme activity was range in soil amended with dying industry waste water flooded soil was 0.9 to 2.0 un

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Babalola, T. S., K. S. Ogunleye, J. A. Lawal, and A. O. A. Ilori. "An Assessment of Degradation of Soil Properties in Kabba College of Agriculture, Kogi State, Nigeria." March 2021 5, no. 1 (2021): 102–9. http://dx.doi.org/10.36263/nijest.2021.01.0240.

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ome soils in Kabba College of Agriculture, Kogi State, southern guinea savannah zone of Nigeria, were assessed to ascertain the levels of degradation of soil properties. The rigid grid soil survey method was used to identify seven soil units. Soils were sampled at 0-20 cm and 20-40 cm soil depth and analyzed for physical and chemical properties using standard methods. Levels of degradation were obtained by comparing laboratory data with the standard land/soil requirement (indicators/criteria) for grouping lands into different degradation classes of 1 to 4 (non to slightly, moderately, highly,

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Michéli, Erika, M. Fuchs, V. Láng, T. Szegi, and G. Kele. "Methods for modernizing the elements and structure of the Hungarian Soil Classification System." Agrokémia és Talajtan 63, no. 1 (2014): 69–78. http://dx.doi.org/10.1556/agrokem.63.2014.1.8.

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The current Hungarian Soil Classification System (HSCS) was elaborated during the 1960s, based on the genetic principles of Dokuchaev. It was developed before sufficient data and modern data processing tools were available and served different purposes than current users need or apply it for.The central unit is the soil type, grouping soils that were believed to have developed under similar soil-forming factors and processes. The major soil type is the highest category that groups soils based on climatic, geographical and genetic bases. Subtypes and varieties are distinguished according to the

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17

A.D., Achimota, Joseph O.T., Payou T.O., Cameroon O.P., and Williams P.A. "Spatial Variability of Selected Soil Properties of the Lower Niger River Floodplains in Bayelsa State, Nigeria." African Journal of Agriculture and Food Science 4, no. 3 (2021): 14–27. http://dx.doi.org/10.52589/ajafs-6rmaxnlv.

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Owing to the influence of topography on soil properties, studies on the variability of soil properties become imperative. This study assessed spatial variability of some selected soil properties in three physiographic units: upper slope, lower slope and recent alluvial soils on channels of present active river in two locations in Bayelsa State. In each unit, one representative soil profile was dug, soil samples collected from generic horizons and analyzed. The results showed varying degree of spatial variability in physical and chemical characteristics, flooding, the source of parent materials

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18

LARK, R. M., J. A. CATT, and J. V. STAFFORD. "Towards the explanation of within-field variability of yield of winter barley: soil series differences." Journal of Agricultural Science 131, no. 4 (1998): 409–16. http://dx.doi.org/10.1017/s0021859698005978.

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In a trial over three successive seasons, the yields of winter barley crops were mapped on a 6 ha field, the soils of which had been mapped according to a system of simple units corresponding to soil series as defined by the Soil Survey of England and Wales. Significant yield variation was explained by differences between soil map units, and the interaction with differences between seasons. The physical properties of the soil series and the potential soil moisture deficits in the three seasons suggested that moisture differences between the soils accounted for much of the observed differences

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19

Yakubu, M., and A. A. Panti. "Characterization, classification and assessment of soil degradation caused by mining activities in the farmland of College of Education, Minna." Journal of Agriculture and Food Sciences 22, no. 2 (2025): 137–52. https://doi.org/10.4314/jafs.v22i2.10.

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This study aimed to characterize and classify soils, as well as evaluate the impact mining activities on soil degradation within the College of Education, Minna farm land. A free survey method of an area covering 60-hectare was conducted. Three soil units were identified, two in the upland mapping unit (UL1, UL2) and one in the dissecting valley (DV3). Three pedons were excavated, one from each of the identified soil units. The pedons were described and soil samples from each genetic horizon were collected for laboratory analysis. In addition, six composite soil samples at three different dist

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20

Beauchemin, S., R. R. Simard, M. A. Bolinder, M. C. Nolin, and D. Cluis. "Prediction of phosphorus concentration in tile-drainage water from the Montreal Lowlands soils." Canadian Journal of Soil Science 83, no. 1 (2003): 73–87. http://dx.doi.org/10.4141/s02-029.

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Subsurface drainage systems can be a significant pathway for P transfer from some soils to surface waters. The objective of the study was to determine P concentration in tile-drainage water and its relationship to P status in surface soils (A horizons) from an intensively cultivated area in the Montreal Lowlands. The profiles of 43 soil units were characterized for their P contents and pedogenic properties. Tile-drainage water P concentrations were monitored over a 3-y r period on a weekly basis on 10 soil units, and four times during each growing season for the other 33 units. The soil units

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21

Świtoniak, Marcin. "Issues relating to classification of colluvial soils in young morainic areas (Chełmno and Brodnica Lake District, northern Poland)." Soil Science Annual 66, no. 2 (2015): 57–66. http://dx.doi.org/10.1515/ssa-2015-0020.

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Abstract Colluvial soils (in Polish: gleby deluwialne) are an important part of the soil cover in young morainic landscapes of northern Poland. They evolved as a result of the accumulation of eroded material at the foot of the slopes and bottoms of closed depressions. The aim of this study was to determine the systematic position of colluvial soils commonly found in the Chełmno and Brodnica Lake District, northern Poland. Ten soil pits located in different types of landscapes were selected for testing soil properties. The colluvial material is characterized by diversified properties: thickness

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Urbański, Krzysztof, and Stanisław Gruszczyński. "Adaptive modelling of spatial diversification of soil classification units." Journal of Water and Land Development 30, no. 1 (2016): 127–39. http://dx.doi.org/10.1515/jwld-2016-0029.

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AbstractThe article presents the results of attempts to use adaptive algorithms for classification tasks different soils units. The area of study was the Upper Silesian Industrial Region, which physiographic and soils parameters in the form of digitized was used in the calculation. The study used algorithms, self-organizing map (SOM) of Kohonen, and classifiers: deep neural network, and two types of decision trees: Distributed Random Forest and Gradient Boosting Machine. Especially distributed algorithm Random Forest (algorithm DRF) showed a very high degree of generalization capabilities in m

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23

Blednykh, V. V., and P. G. Svechnikov. "Optimal performance of soil cultivating units." Traktory i sel hozmashiny 81, no. 7 (2014): 37–38. http://dx.doi.org/10.17816/0321-4443-65600.

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It is found that optimal performance of soil cultivating units exists, wherein tillage costs are minimum. The simplified model of technological operation costs is considered. Dependence of optimal performance on specific conditions of agricultural production is shown.

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Abdelrahman, Y. FA, Abdulsalam Albukhari, M. M. Aburas, and A. M. Abdelqader. "Initial classification of soil based on color characteristic in Jabal Al-Akhdar region, Libya." Al Bayan Scientific Journal, no. 9 (June 1, 2021): 373–90. https://doi.org/10.5281/zenodo.5831967.

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The study was conducted in Al-Jabal Al-Akhdar region to classify soil based on color. Therefore, 48 soil sectors representing a region were chosen to study some important natural and chemical properties. The study aimed to divide the soils of the area into classification units based on the difference in soil color. Remote sensing techniques also contributed to placing soils in similar groups by relying on the classification process according to (Maximum Likelihood Classifier) method. The results indicate the possibility of using color in classifying soils into homogeneous units within the grou

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Gafurova, L. A., I. Yu Savin, and G. T. Djalilova. "Updating of soil map of mountaneous regions of Uzbekistan." Dokuchaev Soil Bulletin, no. 118 (March 25, 2024): 21–47. http://dx.doi.org/10.19047/0136-1694-2024-118-21-47.

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: One of the latest updates on the soil cover of the mountain regions of Uzbekistan is contained in the “Atlas of the Soil Cover of the Republic of Uzbekistan”, published in 2010. It contains soil maps of the regions of the country at the scales of 1 : 350 000 to 1 : 2 500 000 and provides brief charateristics of the soils. The Atlas was compiled on the basis of traditional methods of soil mapping. As a result, its contour part is typical of maps of the mentioned scales and rather schematic. The aim of the research was to update the contour part of the soil maps of mountain territories of Uzbe

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Smreczak, Bożena, and Andrzej Łachacz. "Soil types specified in the bonitation classification and their analogues in the sixth edition of the Polish Soil Classification." Soil Science Annual 70, no. 2 (2019): 115–36. http://dx.doi.org/10.2478/ssa-2019-0011.

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Abstract The aim of the paper was to present the correlation between soil types specified in the sixth edition of the Polish Soil Classification (SGP6 2019) and Polish bonitation classification. The comparisons included two categories of agricultural land: arable soils and soils of permanent grasslands. In Poland bonitation maps are one of the oldest documentations regarding soil cover. They were elaborated in an uniform manner and based on the field examination of soil profiles. Soil information reflected specific rules adopted in the soil quality classification, including identification of s

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Nolin, M. C., and L. Lamontagne. "Fiabilité d'une étude pédologique détaillée réalisée en terrain plat." Canadian Journal of Soil Science 71, no. 3 (1991): 339–53. http://dx.doi.org/10.4141/cjss91-033.

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In order to estimate the reliability of soil information presented in a detailed soil survey (1:20 000 scale) conducted in a flat terrain (Vercheres county, Quebec), 35 randomly selected delineations were inspected with 10 sites per delineation. Reliability was evaluated according to parent material (marine, estuarine and fluvial) and kind of map units (simple and compound). As a whole, mineral soils have been mapped and defined reliably for most criteria commonly used in soil interpretation systems. Reliability of soil information differed significatively with parent material. Taxonomic purit

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McIver, James D., and R. McNeil. "Soil Disturbance and Hill-Slope Sediment Transport After Logging of a Severely Burned Site in Northeastern Oregon." Western Journal of Applied Forestry 21, no. 3 (2006): 123–33. http://dx.doi.org/10.1093/wjaf/21.3.123.

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Abstract Despite considerable public debate in recent years on the practice of postfire logging, few studies have directly evaluated its effects. Soil disturbance and hill-slope sediment transport were measured after a postfire logging operation conducted two years after the 1996 Summit Wildfire (Malheur National Forest), in northeastern Oregon. The wildfire was relatively severe, killing an average of 86% of the trees in experimental units, and leaving an average of 34% mineral soil exposed one year after the fire. Soil disturbance was measured both pre- and postharvest in four replicate unit

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Helyar, KR, PD Cregan, and DL Godyn. "Soil acidity in New-South-Wales - Current pH values and estimates of acidification rates." Soil Research 28, no. 4 (1990): 523. http://dx.doi.org/10.1071/sr9900523.

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An estimate has been made of the mean pH of the surface soils (0-10 or 0-15 cm) of New South Wales by mapping the soil pH (1:2, soil: 0.01 M CaCl2) values of soil samples analysed by the NSW Agriculture & Fisheries soil testing service. Within mapped classes the soil pH values vary around the mean by about 20.4 units for low pH soils (3.8-5.0) to about 20.9 units for high pH soils (>6.0). It is estimated that the areas of surface soils within agricultural holdings in NSW in the pH classes <4.5, 4.51-5 0, 5.01-5 5 and 5.5 1-6.0, are 5 3, 8.4, 5 7 and 5.1 million ha respectively. In ge

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Rahman, Arafat, MJ Uddin, Md Raisuddin Sikder, et al. "Soil properties and carbon stock along the toposequence of Lalmai hill ecosystem of Bangladesh." Dhaka University Journal of Biological Sciences 30, no. 2 (2021): 331–43. http://dx.doi.org/10.3329/dujbs.v30i2.54658.

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A study was carried out in the Lalmai hill ecosystem of Bangladesh regarding their soil properties and soil organic carbon (SOC) stocks. The Lalmai hill ecosystem consists of three toposequence arrangements as hills, piedmonts, and floodplains. Forty-five soil samples covering nine soil profiles were selected to conduct the present study. Soil samples were collected at five different depths of 0-20 cm, 20-40 cm, 40-60 cm, 60-80 cm and 80-100 cm intervals from each pit of the study sites. Soil pH, percent SOC, percent total nitrogen (TN), bulk density, cation exchange capacity (CEC), particle s

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Paul, K. I., M. K. Conyers, and A. S. Black. "Influence of moist - dry cycles on pH changes in surface soils." Soil Research 37, no. 6 (1999): 1057. http://dx.doi.org/10.1071/sr98105.

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It is well established that in the moderately acidic soils of southern Australia, the 0–2 cm layer commonly has a higher pH than soil layers between 2 and 10 cm depth. The surface 2 cm of soil is also exposed to much greater fluctuations of moisture content than deeper soil layers. There are contradictory or speculative reports in the literature on how soil moisture fluctuation affects pH and processes which influence pH. Therefore, the aim of this study was to determine the effect of moist–dry cycles on pH, and on processes involving H+ transformations, in 3 surface soils (0–2 cm) sampled fro

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Adilakshmi K., Aparna B., Rani B., et al. "Organic Carbon and Biological Properties of Soils in Various Agro-Ecological Units of Kerala, India." International Journal of Environment and Climate Change 13, no. 11 (2023): 2939–49. http://dx.doi.org/10.9734/ijecc/2023/v13i113464.

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A study was carried out in four agro-ecological units (AEUs), viz., southern laterites (AEU 8), south central laterites (AEU 9), north central laterites (AEU 10), and the northern laterites (AEU 11) of Kerala, with the objective of detailing the soil fertility status of the study area and unveiling the relationship between organic carbon (OC) and various biological properties of soils, like population of phosphorus solubilizers and acid phosphatase activity, by following one-way analysis of variance (ANOVA). The findings of the study revealed that the average values of OC among the four AEUs v

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Camarinha, Pedro I. M., Silvio J. C. Simões, George P. Bernardes, and Isabel C. B. Trannin. "Correlating Soil Porosity and Respective Geological Unit in Paraíba do Sul Valley, Brazil - A Geostatistical Methodology Proposal." Soils and Rocks 35, no. 3 (2012): 209–22. http://dx.doi.org/10.28927/sr.353209.

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This manuscript aims proposing a methodology for correlating soil porosity to the respective geological units using geostatistical analysis techniques, including interpolation data by kriging. The site studied was in Lorena municipality, Paraíba do Sul Valley, southeastern Brazil. Specifically all studies were carried out within an area of 12 km2 located at Santa Edwirges farm. The database comprehended 41 soil samples taken at different geological and geomorphologic units at three different depths: surface, 50 cm and 100 cm depth. The geostatistical analyses results were correlated to a geolo

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Berg, M. van Den, and J. B. Oliveira. "Variability of apparently homogeneous soilscapes in São Paulo state, Brazil: II. quality of soil maps." Revista Brasileira de Ciência do Solo 24, no. 2 (2000): 393–407. http://dx.doi.org/10.1590/s0100-06832000000200016.

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The quality of semi-detailed (scale 1:100.000) soil maps and the utility of a taxonomically based legend were assessed by studying 33 apparently homogeneous fields with strongly weathered soils in two regions in São Paulo State: Araras and Assis. An independent data set of 395 auger sites was used to determine purity of soil mapping units and analysis of variance within and between mapping units and soil classification units. Twenty three soil profiles were studied in detail. The studied soil maps have a high purity for some legend criteria, such as B horizon type (> 90%) and soil texture c

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Eponon, Eboa Christophe Ghislain, Koffi Fernand Jean-Martial Kassi, Konan Didier Kouamé, et al. "The Soil Diagnostic Method to Formulate Fertilizer Requirements for Coffee Trees in Côte d'Ivoire." Archives of Current Research International 23, no. 4 (2023): 51–59. http://dx.doi.org/10.9734/acri/2023/v23i4569.

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Coffee is a crop that exports significant amounts of minerals from the soil, particularly through crop and pruning products. Maintaining sustainable productivity requires good knowledge and rational management of factors related to soil fertility and plant nutritional status, which would limit production. The objective of this study was to diagnose the mineral requirements of coffee plants in different production regions in order to recommend nutrient quantities adapted to the characteristics of each soil type for sustainable coffee production. Chemical analysis of 156 soil samples representat

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Hagverdi, A. "Analysis of Anthropogenic Load on Soils of the Pirsaatchay RiverBasin in Azerbaijan." Bulletin of Science and Practice 11, no. 7 (2025): 276–83. https://doi.org/10.33619/2414-2948/116/34.

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The Pirsaatchay River basin is described as a geographical territory characterized by natural-historical, ecological-geographical and historical aspects of human economic activity. Situated in the south-eastern part of the Greater Caucasus, the basin unites soil types and subtypes, ranging from primitive sierozems characteristic of the arid coasts of the Caspian Sea to mountain meadow soils of the highlands, and its small taxonomic units. Here, the process of soil degradation proceeded in different directions and under different natural conditions along the vertical landscape zonality. The stu

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Udoh, B. T., and T. O. Ibia. "Fertility capability classification for agricultural land use planning in the beach sands area of Akwa Ibom State, Nigeria." Agro-Science 21, no. 2 (2022): 74–78. http://dx.doi.org/10.4314/as.v21i2.8.

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Soil survey and fertility capability classification (FCC) were carried out in an area mostly underlain by the beach ridge sands (BRS) parent material in Akwa Ibom State, Nigeria. The study applied the FCC in agricultural land use planning for efficient land management and optimal agricultural productivity of the beach soils. Field and laboratory data were obtained from 40 pedons located across eight Local Government Areas on the BRS parent material. From the results of field and laboratory studies, 11 FCC units were identified in the area. Based on similarities in certain soil profile characte

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Gani, Adashu Tanko, and Jacob Usman. "Land Suitability Evaluation for Maize Production Among the Soils of Hyuku in Wukari, Taraba State, Nigeria." Bulgarian Journal of Soil Science 9, no. 1 (2024): 69–82. https://doi.org/10.5281/zenodo.11409507.

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Suitability evaluation of soils of Hyuku in Wukari Local Government Area of TarabaState, Nigeria was carried out with the view to characterize and evaluate the soils for itssuitability for maize production. Two soil units were identified based on their physical,chemical and morphological features using grid method of soil survey. Two profile pits weresunk in each unit, making a total of four pits in all. The soils were deep (80 to 115 cm), welldrained with sandy loam surface textures and sandy loam to clay loam subsurface textured.The soil reaction was moderately acidic (5.65 to 6.75) with hig

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Teteriatnyk, Oleksandr, and Volodymyr Rashkivskiy. "Calculations difference of hight-speed working units depending on the kinematics of their working processes." Gіrnichі, budіvelnі, dorozhnі ta melіorativnі mashini, no. 98 (December 30, 2021): 5–10. http://dx.doi.org/10.32347/gbdmm2021.98.0101.

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High-speed working units are very widely used in modern construction, in the destruction of durable materials and soils and more. When calculating the power and energy parameters of dynamic working units take into account changes in the nature of the interaction of the cutting element with the environment and the emergence and propagation of soil stresses from the action on the boundary of the array of the cutting element. This leads to the emergence of a stress-strain state in the soil mass, which has an oscillatory-wave character. The nature of the stress-strain state is influenced by

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Maslov, G. G., and I. A. Zhury. "PERSPECTIVE STRUCTURES OF MACHINE AND TRACTOR UNITS FOR OPERATIONS COMBINATION." Traktory i sel hozmashiny 84, no. 2 (2017): 47–52. http://dx.doi.org/10.17816/0321-4443-66284.

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Perspective structures of machine and tractor units for combination of technological operations when performing of the field mechanized works are offered. Combination is based on the operations coinciding on agrotechnical terms of the performed works: introduction of mineral fertilizers - stubble processing of the soil; hulling of an eddish - application of fertilizers; chisel plowing soils - introduction of mineral fer-tilizers; crops of intermediate cultures - processing of the soil and etc. Efficiency of combination is determined by higher quality of the performed works without gap by time,

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Pareja, Mario R., David W. Staniforth, and Gilda P. Pareja. "Distribution of Weed Seed Among Soil Structural Units." Weed Science 33, no. 2 (1985): 182–89. http://dx.doi.org/10.1017/s0043174500082060.

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The depth distribution of weed seed, their location in relation to soil aggregates, and the size distribution of soil aggregates were determined in fields that had been under continual conventional or reduced tillage for more than 12 years. Soil samples were taken at three depths in the spring and fall of 1982, and soil aggregates were classified into seven size classes by dry, rotary sieving. Subsamples were deflocculated and washed through sieves to recover weed seed. In the spring, 85% of all seed in the reduced-tillage and 28% of those in the conventional-tillage soil were in the 0- to 5-c

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Narcisse, Soh Njekeu, Megueni Clautilde, Tchobsala, Doua Aoudou Sylvain, and Paul Kevin Mbamba Mbamba Jean. "Impact of the chemical properties of different soil units on the dynamics of vegetal biodiversity in the Benoue National Park and its Western and Northern peripheries." World Journal of Advanced Research and Reviews 7, no. 2 (2020): 247–57. https://doi.org/10.5281/zenodo.4317227.

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This work aims at determining the impact of soils' chemical properties on the dynamics of biodiversity in the Benoue National Park (BNP) of Cameroon and its peripheries (surrounding hunting concessions N ° 1, 4, 5 and 7). Nine, out of the sixteen soil units encountered in the BNP were studied, because of their accessibility. On each of these nine soil units studied, three elementary plots were materialized for the collection of soil samples and for the study of vegetation dynamics. The chemical parameters were evaluated according to appropriate methods and the dynamics of the vegetatio

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Pinheiro, H. S. K., P. R. Owens, L. H. C. Anjos, W. Carvalho Júnior, and C. S. Chagas. "Tree-based techniques to predict soil units." Soil Research 55, no. 8 (2017): 788. http://dx.doi.org/10.1071/sr16060.

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Quantitative soil–landscape models offer a method for conducting soil surveys that use statistical tools to predict natural patterns in the occurrence of particular map units across a landscape. The aim of the present study was to predict soil units in a watershed with wide variation in landscape conditions. The approach relied on a modelling of soil-forming factors in order to understand the variability of the landscape components in the region. Models were generated for landscape attributes related to pedogenesis, specifically elevation, slope, curvature, compound topographic index, Euclidea

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Irsyam, Al, Saida Saida, and Anwar Robbo. "ANALISIS STATUS KESUBURAN TANAH PADA TANAMAN KAKAO (Theobroma cacao L.) DI KECAMATAN HERLANG KABUPATEN BULUKUMBA." AGrotekMAS Jurnal Indonesia: Jurnal Ilmu Peranian 6, no. 1 (2025): 130–42. https://doi.org/10.33096/agrotekmas.v6i1.734.

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The aim of the research was to determine the status of soil chemical properties in cocoa (Theobroma cacao L) plants in Herlang District, Bulukumba Regency. The research method used was field and descriptive surveys, field surveys and making maps as work maps in research obtained from administrative maps, soil type maps, slope maps and land use maps. Map of land units as a reference for determining observation points or sampling. The results showed that soil fertility became a chemical characteristic in soil fertility status, namely Cation Exchange Capacity (CEC) for all land units with moderat

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Manning, G., L. G. Fuller, R. G. Eilers, and I. Florinsky. "Soil moisture and nutrient variation within an undulating Manitoba landscape." Canadian Journal of Soil Science 81, no. 4 (2001): 449–58. http://dx.doi.org/10.4141/s00-058.

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The use of discrete management units for variable-rate N fertilization requires that factors influencing grain yield response to N fertilizer are adequately characterized by delineating landscapes into such management units. The objective of this study was to compare the use of topographically derived landform element complexes (LEC) and the use of individual soil series as management units. Soil volumetric moisture content, nitrate-N, exchangeable ammonium-N, extractable phosphorus, exchangeable potassium, and sulphate-sulphur were studied in 10 intensively sampled transects in an undulating

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Walker, Tony R. "Properties of selected soils from the sub−arctic region of Labrador, Canada." Polish Polar Research 33, no. 3 (2012): 207–24. http://dx.doi.org/10.2478/v10183-012-0013-4.

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Abstract Atotal of 212 soil profiles were described and assessed for physical and chemical properties during July 2006 as part of an Ecological Land Classification study along the Churchill River in central Labrador. Two major soil types were found in the study area along the Churchill River: Podzols and Organic soils. Podzolic soils covered approximately 60% and Organic soils occurred in 24% of the study area. Approximately 15% of the study area was classified as rock and other unconsolidated material. Summary results and a sub−set of the following soil units (from 10 soil profiles) are prese

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Haskevych, Volodymyr, and Oksana Haskevych. "Description of structure of soil cover of Ranged Pobuzhya." Visnyk of the Lviv University. Series Geography, no. 44 (November 28, 2013): 62–70. http://dx.doi.org/10.30970/vgg.2013.44.1193.

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The basic units of structure of soil cover of Ranged Pobuzhya (basic soil habitats and microcatena) have been evaluated. Their content, features of geometric structure and conditions of formation have been analyzed. Average size ranges, partition coefficients and indices of branching and limits variability geometric characteristics elemental soil habitats and microcatena have been calculated. The impact of erosion on soils differentiation has been analyzed. Key words: soils structure, soil elemental area, microcatena, dismemberment, branching, erosion.

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Babayev, M. P., S. I. Nadjafova, R. I. Mirzezade, and F. M. Ramazanova. "Agrosoil zoning of the land fund of Karabakh of the Republic of Azerbaijan." Pochvovedenie i agrokhimiya, no. 1 (April 2, 2024): 5–18. http://dx.doi.org/10.51886/1999-740x_2024_1_5.

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Agro-soil zoning of the land fund of Karabakh was carried out on the basis of taxonomic divisions (landscape-natural zone, agro-soil region and soil sub-district). When establishing taxonomic units, preference is given to the characteristics and properties of soils and territories acquired in the process of human economic activity. Soil subregions are identified as small taxonomic units that determine the agricultural value of soils. Among the characteristics of the territory that are important for agro-soil zoning, the conditions of micro- and nanorelief, surface slope, territory planning, dr

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Gerasimova, M. I. "Principles, structure and taxonomic units in the russian and international (WRB) systems of soil classification." Dokuchaev Soil Bulletin, no. 79 (July 1, 2015): 23–35. http://dx.doi.org/10.19047/0136-1694-2015-79-23-35.

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Two classification systems under comparison differ in objects, terminology, hierarchical levels, and approaches to identify soils. However, they have some common features: both systems are oriented to soil properties and apply the pedogenetic concepts, on one hand; on the other hand, the results, namely, some of the soil taxonomic units are similar. The second-level units of WRB, representing the classification rather than the reference base, display a certain correlation with the subtype level in the Russian soil classification system. This level in two systems may be qualified as a really ac

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Fenton, Thomas E. "The impact of erosion on the classification of Mollisols in Iowa." Canadian Journal of Soil Science 92, no. 3 (2012): 413–18. http://dx.doi.org/10.4141/cjss2010-042.

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Fenton, T. E. 2012. The impact of erosion on the classification of Mollisols in Iowa. Can. J. Soil Sci. 92: 413–418. The fertile black soils in the Great Plains and Western States of the United States are dark brown Chernozems in the Canadian system of soil taxonomy and Mollisols, when a mollic epipedon is present, according to the United States soil taxonomy. Other primary criteria are organic carbon content, color, structure, and thickness of the mollic epipedon. Accelerated erosion can affect all of these properties and is especially critical for soils that have slope gradients of more than

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