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Articoli di riviste sul tema "Soils Phosphorus content"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 26 gennaio 2023

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1

Weaver, DM, GSP Ritchie, and RJ Gilkes. "Phosphorus sorption by gravels in lateritic soils." Soil Research 30, no. 3 (1992): 319. http://dx.doi.org/10.1071/sr9920319.

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The effect of sesquioxidic gravels (>2 mm size fraction) on phosphorus sorption by two gravelly lateritic soils was investigated by phosphorus sorption experiments, X-ray diffraction, autoradiography and electron microscopy.In one soil the abundance and size of gravels decreased downslope. As the gravel content of both soils increased (13-61%), the proportion of large (>8 mm) gravels increased (0-70%). Phosphorus sorption increased in the order: (>2 mm fraction) < (whole soils) < (<2 mm fraction). Phosphorus sorption on lateritic gravels (>2 mm) decreased with increasing g

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2

Gopp, N. V., O. A. Savenkov, T. V. Nechaeva, N. V. Smirnova, and A. V. Smirnov. "Using of NDVI in digital mapping of phosphorus content in soils and assessment of it's availability by plants." Исследования Земли из Космоса, no. 2 (May 21, 2019): 65–73. http://dx.doi.org/10.31857/s0205-96142019265-73.

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It was developed а method of digital mapping of phosphorus content (total, organic, available) in soils using spatially distributed NDVI values calculated from Landsat 8 (30 m resolution). It was carried out comparative analysis of content of phosphorus of soils differing in soil humus content: with high and medium humus content. In medium-humus soils (agrochernozems, agro-dark-grey) compared to high- humus agrochernozems discovered lower contents of total phosphorus in 1.1 times, and organic phosphorus in 1.5–1.7 times. The reverse trend was found for available phosphorus — in all medium- hum

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3

Gabriela, Mühlbachová, Čermák Pavel, Vavera Radek, Káš Martin, Pechová Miroslava, Marková Kateřina, Kusá Helena, Růžek Pavel, Hlušek Jaroslav, and Lošák Tomáš. "Boron availability and uptake under increasing phosphorus rates in a pot experiment." Plant, Soil and Environment 63, No. 11 (November 20, 2017): 483–90. http://dx.doi.org/10.17221/480/2017-pse.

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The boron (B) availability in soils, B uptake and possible B interactions with phosphorus (P) were studied in a pot experiment with increasing P rates. Three soil types of different characteristics were used for the experiment that lasted two years. The two soil tests were used in the experiment – Mehlich 3 and NH<sub>4</sub>-acetate. Significant positive correlations were found between barley dry matter yield, B content in plants and B uptake under increasing P treatments (P ≤ 0.001). The significant relationship for B content (P ≤ 0.001) was obtained between the used soil tests f

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4

Rogeri, Douglas Antonio, Leandro Bortolon, Clesio Gianello, and Magno Batista Amorim. "Remaining phosphorus content to determine phosphorus availability of the soils in Rio Grande do Sul." Pesquisa Agropecuária Brasileira 52, no. 12 (December 2017): 1203–14. http://dx.doi.org/10.1590/s0100-204x2017001200009.

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Abstract: The objective of this work was to evaluate remaining P compared with soil clay content as a P buffer index to classify P extracted by the Mehlich-1 (M1) and Mehlich-3 (M3) methods in soils from the state of Rio Grande do Sul, Brazil. The experiment was carried out in a completely randomized design with five P2O5 rates (0, 50, 100, 200, and 400 mg kg-1) and two sucessive corn crops, and three replicates, in 20 representative soils of the state. P extracted by M1 and M3 before crop planting was adjusted to P contents in biomass, considering soil buffer capacity. The division of soils i

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5

Sánchez-Esteva, Sara, Maria Knadel, Rodrigo Labouriau, Gitte H. Rubæk, and Goswin Heckrath. "Total Phosphorus Determination in Soils Using Laser-Induced Breakdown Spectroscopy: Evaluating Different Sources of Matrix Effects." Applied Spectroscopy 75, no. 1 (August 24, 2020): 22–33. http://dx.doi.org/10.1177/0003702820949560.

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Laser-induced breakdown spectroscopy (LIBS) is a potential alternative to wet chemical methods for total soil phosphorus determination, but matrix effects related to physical and chemical sample properties need to be further understood. The aim of this study was to explore matrix effects linked to particle size distribution and chemical form of phosphorus on LIBS response and the ability of LIBS to predict total phosphorus in a range of different soil types. Univariate calibration curves were developed by spiking the soils with increasing doses of phosphorus, and limits of detection for LIBS d

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6

Minina, N. N., A. R. Makhmutov, and O. V. Sinelnikova. "Agrochemical characteristics of soils in the vicinity of the village of Mishkino, Mishkinsky district of the Republic of Bashkortostan." IOP Conference Series: Earth and Environmental Science 1043, no. 1 (June 1, 2022): 012053. http://dx.doi.org/10.1088/1755-1315/1043/1/012053.

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Abstract The article is devoted to the analysis of the dynamics of the content of such important elements of fertility as phosphorus and potassium and the acidity of arable soils in the vicinity of the Mishkino Mishkinsky district of the Republic of Bashkortostan is determined. The data on the content of phosphorus and potassium and the determination of acidity in the soils of the Mishkinsky district of the Republic of Bashkortostan from 1976 to 2000 were compared. Studies on the phosphorus content in the soils of the Mishkino district conducted in 1976 showed an average level of phosphorus av

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7

Yildiz, Ercan, Mehmet Yaman, and Ahmet Sümbül. "RELATIONSHIPS BETWEEN PHYSICAL AND CHEMICAL PROPERTIES OF SOILS AND PLANT NUTRIENT CONTENT OF LEAVES IN THE APPLE ORCHARDS." Current Trends in Natural Sciences 11, no. 21 (July 31, 2022): 139–44. http://dx.doi.org/10.47068/ctns.2022.v11i21.016.

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This study was carried out in 42 orchards located in the lowland of Develi, where the apple cultivation is intense in Kayseri province. The analyses were made to determine pH, CaCO3, EC, organic matter, available phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg), iron (Fe), zinc (Zn), manganese (Mn) and copper (Cu) in soil samples and nitrogen (N), P, K, Ca, Mg, Fe, Zn, Mn, Cu, and boron (B) in leaf samples. In the study, the relationships between some physical and chemical properties of the soils and the plant nutrient content of the leaves were evaluated by correlation analysis. In

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8

Olego, Miguel Ángel, Mateo D. Cuesta-Lasso, Fernando Visconti Reluy, Roberto López, Alba López-Losada, and Enrique Garzón-Jimeno. "Laboratory Extractions of Soil Phosphorus Do Not Reflect the Fact That Liming Increases Rye Phosphorus Content and Yield in an Acidic Soil." Plants 11, no. 21 (October 27, 2022): 2871. http://dx.doi.org/10.3390/plants11212871.

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In addition to aluminum and other heavy metal toxicities, acidic soils also feature nutrient deficits that are not easily overcome by merely adding the required amounts of mineral fertilizers. One of the most critically scarce nutrients in acidic soils is phosphorus, which reacts with aluminum and iron to form phosphates that keep soil phosphorus availability significantly low. Liming ameliorates acidic soils by increasing pH and decreasing aluminum contents; however, it also increases the amount of calcium, which can react with phosphorus to form low-solubility phosphates. In the present work

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9

Xu, G., J. N. Sun, R. F. Xu, Y. C. Lv, H. B. Shao, K. Yan, L. H. Zhang, and M. S. A. Blackwell. "Effects of air-drying and freezing on phosphorus fractions in soils with different organic matter contents." Plant, Soil and Environment 57, No. 5 (May 16, 2011): 228–34. http://dx.doi.org/10.17221/428/2010-pse.

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Little is known about the effects of air-drying and freezing on the transformation of phosphorus (P) fractions in soils. It is important that the way in which soils respond to such perturbations is better understood as there are implications for both P availability and loss to surface waters from soils. In this study, the effects of air-drying and freezing were investigated using two soils, one being a forest soil (FS) high in organic matter and the other being a sterile soil (SS) low in organic matter. Soil P was fractionated using a modified Hedley fractionation method to examine the changes

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10

Chowdhury, S., D. Chakraborty, and MK Rahman. "Assessment of fertility potential index of some soils of Moheshkhali betel leaf (Piper betle L.) estate." Journal of Biodiversity Conservation and Bioresource Management 7, no. 1 (January 10, 2022): 25–32. http://dx.doi.org/10.3329/jbcbm.v7i1.57120.

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Fifteen soil samples (0-15cm depth) and fifteen betel leaf samples from Bara Moheshkhali, Choto Moheshkhali, Hoanak, Kalmarchora, Shaplapur union of Moheshkhali upazila, Cox’s Bazar district were collected on December-January (2020-2021). It was collected for the purpose of evaluating the color, particle density, moisture content, texture, pH, EC and organic matter content of soils and total nitrogen, phosphorous, potassium and sulfur of the soils and total protein content, nitrogen, phosphorus, potassium and sulfur of leaves. Maximum sampled soil was containing yellowish red color when moist

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11

Becher, Marcin, Krzysztof Pakuła, Joanna Pielech, and Ewa Trzcińska. "Phosphorus resources and fractions in peat-muck soils." Environmental Protection and Natural Resources 29, no. 3 (September 1, 2018): 1–6. http://dx.doi.org/10.2478/oszn-2018-0012.

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Abstract The goal of the research was to determine the resources and speciation (forms of occurrence) of phosphorus in organic soils of drained fens of the Wysoczyzna Siedlecka. Two profiles of muck soils were generated from different peats. Basic physical and chemical properties of the soils and the quantity, resources and fractions of phosphorus in the soil were determined. The majority of the total resource of soil phosphorus was accumulated in the muck horizons of the analysed soils. The total content of phosphorus materially correlated with characteristically variable parameters in the mo

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12

Sárdi, Katalin, and P. Csathó. "Studies on the Phosphorus Retention of Different Soil Types in a Pot Experiment with Perennial Ryegrass." Agrokémia és Talajtan 51, no. 1-2 (March 1, 2002): 177–84. http://dx.doi.org/10.1556/agrokem.51.2002.1-2.21.

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Differences in soil properties and among plant species may play an important role in the effectiveness of residual and freshly applied phosphorus fertilizers. However, a limited number of experimental results are available on this subject. Pot experiments were carried out with soils from 9 sites of the National Long-term Fertilization Trials, varying in their main characteristics, such as pH, soil texture, organic matter content and P status. Soil samples were taken after 20 years from the unfertilized control and from plots annually fertilized with 200 kg P 2 O 5 .ha -1 . Effects of long-term

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13

Shah, Asad, Jing Huang, Muhammad Numan Khan, Tianfu Han, Sehrish Ali, Nano Alemu Daba, Jiangxue Du, et al. "Sole and Combined Application of Phosphorus and Glucose and Its Influence on Greenhouse Gas Emissions and Microbial Biomass in Paddy Soils." Agronomy 12, no. 10 (September 30, 2022): 2368. http://dx.doi.org/10.3390/agronomy12102368.

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Soil microbial activities are consistently restricted not only by phosphorus availability but also by microbial carbon requirements. Therefore, an incubation experiment was conducted with three soils (QY1, QY2 and QY3) selected on the basis of phosphorus limitation. Results revealed that high N2O emissions, 17.44 µg kg−1, were measured in phosphorus-deficient soil with addition of glucose. In phosphorus-adequate soils, the peaks of N2O emission values in the glucose addition treatment were 20.8 µg kg−d and 24.7 µg kg−1, which were higher than without glucose-added treatments. CH4 emissions wer

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14

Jakab, Anita. "The ammonium lactate soluble potassium and phosphorus content of the soils of north-east Hungary region: a quantifying study." DRC Sustainable Future: Journal of Environment, Agriculture, and Energy 1, no. 1 (January 21, 2020): 7–13. http://dx.doi.org/10.37281/drcsf/1.1.2.

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Half of the orchards of Hungary are in Szatmár-Bereg County. The county is in North-east Hungary. The total area of this micro region (5936 km²) covers 6.6% of the country’s overall territory (90 030 km2). The most common soil types of the planted areas in Szatmár and Bereg region are acidic meadow (WRB Vertisol) and acidic sediment (WRB Fluvisol) soils, while sandy (WRB Arenosol) soils dominate the neighboring area (Nyírség). In this study several chemical parameters were investigated, including ammonium lactate (AL) soluble phosphorus and potassium content of soils of fruit plantations. Ammo

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15

Martynov, A. V. "Available for plants phosphorus in the floodplain catenas of the Amur River." Dokuchaev Soil Bulletin, no. 107 (July 12, 2021): 61–91. http://dx.doi.org/10.19047/0136-1694-2021-107-61-91.

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This work was carried out to study the content and distribution of available for plants phosphorus in different types of floodplain soils along five catenas located in the upper and the middle Amur. It was found that the available for plants phosphorus forms in the soils of floodplains are influenced by the following factors: the structure of the river system, the type of floodplain, the type of vegetation cover, and soil-forming processes. During the long-term transportation of alluvium along the river bed, its hydrogenic weathering occurs with the release of phosphorus into river waters. In

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16

FANDALYUK, А., I. KOMAR, and A. CHOPAK. "DYNAMICS OF THE CONTENT OF PHOSPHORUS MOBILE COMPOUNDS IN SOILS OF THE TRANSCARPATHIAN REGION." PROBLEMS OF AGROINDUSTRIAL COMPLEX OF KARPATY 29 (2021): 154–59. http://dx.doi.org/10.47279/2709-3727-2021-1-14.

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The distribution of soils by the content of mobile phosphorus compounds in the soils of the Transcarpathian region according to the results of ecological and agrochemical survey conducted during the VIII - XI rounds (2001 - 2020) is highlighted. Keywords: soil, ecological and agrochemical survey, mobile phosphorus compounds, soil acidity.

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17

Szara, Ewa, Tomasz Sosulski, and Magdalena Szymańska. "Soil phosphorus sorption properties in different fertilization systems." Plant, Soil and Environment 65, No. 2 (February 1, 2019): 78–82. http://dx.doi.org/10.17221/696/2018-pse.

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The study aimed at the evaluation of the accumulation and vertical distribution of different forms of phosphorus (P) in reference to phosphorus sorption properties subject to mineral (NPK), mineral-organic (NPK + M), and organic (M) fertilisation. It was carried out in a long-term experimental field in Skierniewice (Central Poland) conducted since 1923 under rye monoculture. Total P content in the M and NPK soil profile was similar and lower than in the NPK + M soil. The content of organic P in A<sub>p</sub> and E<sub>et</sub> horizons of both manured soils was similar

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18

Hernandez, Jorge David, and Randy Killorn. "Phosphorus fertilizer by-product effect on the interaction of zinc and phosphorus in corn and soybean." Canadian Journal of Soil Science 89, no. 2 (May 1, 2009): 189–96. http://dx.doi.org/10.4141/cjss07069.

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The application of high phosphorus fertilizer by-products to farmland is a common practice used to reduce storage volume and disposal cost. However, because Iowa soils are generally high in both phosphorus and zinc, there are environmental and fertility questions concerning their application to farmland. A greenhouse study was conducted to determine the effect of a soil-applied fertilizer by-product on the zinc-phosphorus relationship in corn and soybean plants grown on three Iowa soil series: Belinda, Downs, and Haig. The soils were mixed with a high-phosphorus fertilizer by-product and plant

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19

Iglovikov, Anatoly, and Alexander Motorin. "Methods of optimizing the phosphate regime of drained peat soils in the northern trans-Urals." E3S Web of Conferences 135 (2019): 01003. http://dx.doi.org/10.1051/e3sconf/201913501003.

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The paper presents the results of long-term research to determine the content of phosphorus in drained peat soils and the influence of agro-meliorative techniques on its dynamics. The objects of research were medium-power peat soils on the typical genesis for subtaiga (Yernyakul bog located on the watershed of Tobol and Vagai rivers; Usalskoe bog – on the second floodplain terrace of Tobol river) and forest steppe (Tarmanskoe bog, Reshetnikovo object located on the second floodplain terrace of Tura river) of Northern Trans-Ural region. It has been revealed that the gross phosphorus content in

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20

Rogóż, Antoni, and Monika Tabak. "Contents of selected macroelements in soils, potatoes and fodder beets at variable soil reaction / Zawartość wybranych makroelementów w glebach oraz w ziemniakach i burakach pastewnych przy zmiennym odczynie gleby." Soil Science Annual 66, no. 1 (March 1, 2015): 3–9. http://dx.doi.org/10.1515/ssa-2015-0012.

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Abstract The aim of the research was to determine the concentration of selected macroelements in soil and in root crops (potatoes and fodder beets) at a variable soil reaction. The changes in pH values in the studied soils influenced the content of these elements in soluble forms determined in 0.1 mol HCl·dm-3. A statistical analysis showed a positive relationship between the soil pH value and the calcium and magnesium contents in a form close to the total form, as well as the content of soluble forms of phosphorus, calcium, and magnesium. The content of the studied macroelements, i.e. phospho

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21

Zheng, Z., L. E. Parent, and J. A. MacLeod. "Influence of soil texture on fertilizer and soil phosphorus transformations in Gleysolic soils." Canadian Journal of Soil Science 83, no. 4 (August 1, 2003): 395–403. http://dx.doi.org/10.4141/s02-073.

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The P dynamics in soils should be quantified in agricultural soils to improve fertilizer P (FP) efficiency while limiting the risk of P transfer from soils to water bodies. This study assessed P transformations following FP addition to Gleysolic soils. A pot experiment was conducted with five soils varying in texture from sandy loam to heavy clay, and receiving four FP rates under barley (Hordeum vulgare L.)-soybean (Glycine max L.) rotations. A modified Hedley procedure was used for soil P fractionation. Soil resin-P and NaHCO3-Pi contents were interactively affected by texture and FP. The Na

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22

Mustaqimah, Devianti, AA Munawar, Ferijal, and Sufardi. "Chemical Characteristics of Dryland Soils from Aceh Besar Regency As A Fertilizer Design Reference." IOP Conference Series: Earth and Environmental Science 1116, no. 1 (December 1, 2022): 012057. http://dx.doi.org/10.1088/1755-1315/1116/1/012057.

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Abstract Although the potential for dry agricultural land in Aceh Besar Regency is very wide, but the development of existing food crops is still low. There is a few information about the quality of soil chemical content in dry agricultural land effect to the development of crop productions. This study aims to provide information on the characteristics of soil chemical elements, Nitrogen, Phosphorus and Potassium on agricultural lands in Aceh Besar regency in the form of a map. This study was conducted using the analysis of variant tests method and spatial analysis. It covered some types of da

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23

Mao, Ying Ming, Gui Ru Xu, and Xiao Yu Pan. "Physicochemical Property and Nutrient Status of Soils in Urban Green Spaces in Xuzhou, China." Advanced Materials Research 610-613 (December 2012): 3102–8. http://dx.doi.org/10.4028/www.scientific.net/amr.610-613.3102.

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Soil physicochemical properties and the nutrient status of urban green spaces (UGS) in Xuzhou were analyzed. The results show that the soil pH is neutral to alkaline. Influenced by alkaline chemical fertilizer and some building materials, the soil pH presents a rising tendency. The content of soil organic matter (SOM) content was low but variable, which is mainly attributed to the disturbance of anthropogenic activity. The distributions of total nitrogen, phosphorus and potassium are relatively uniform but those of alkali-hydrolysable nitrogen, available phosphorus and potassium are highly dis

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24

Marler, Thomas E. "Soil from Serianthes Rhizosphere Influences Growth and Leaf Nutrient Content of Serianthes Plants." Agronomy 12, no. 8 (August 17, 2022): 1938. http://dx.doi.org/10.3390/agronomy12081938.

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Soils from the rhizosphere of perennial plants accumulate microorganisms that influence the growth of other plants. This microorganism biodiversity may be exploited by using these soils as an inoculum in new planting sites. Soils collected from the rhizosphere of mature Serianthes trees were subjected to treatments designed to reduce or increase microorganism populations, then were used in a series of five studies to grow Serianthes plants in container culture. Serianthes kanehirae and Serianthes grandiflora stem growth was 14–19% greater, leaf nitrogen was 40–46% greater, leaf phosphorus was

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25

Víg, Róbert, Attila Dobos, and Zoltán Pongrácz. "Statistical comparison of soil analysing results of chernozem soils." Acta Agraria Debreceniensis, no. 30 (October 10, 2008): 93–99. http://dx.doi.org/10.34101/actaagrar/30/2997.

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The soil fertility was degraded as a result of unreasonable tillage, therefore the application of site-specific nutrient replacement is necessary. It is essential for the application of precision fertilization to know the location, extension, soil properties and nutrient-supply of the different soil types ofcultivated areas.We collected soil samples from 580 hectares of land in 2006. Soil samples were collected from every 5 ha in 30 and 60 cm depths during Spring from 20.05.2006 to 12.06.2006 and again in Autumn from 09.19.2006 to 02.10.2006. Soil samples were analysed at the Department of Agr

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Mühlbachová, Gabriela, Pavel Čermák, Martin Káš, Kateřina Marková, Radek Vavera, Miroslava Pechová, and Tomáš Lošák. "Crop yields, boron availability and uptake in relation to phosphorus supply in a field experiment." Plant, Soil and Environment 64, No. 12 (November 30, 2018): 619–25. http://dx.doi.org/10.17221/490/2018-pse.

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The boron (B) availability and uptake were studied in relation to different phosphorus rates applied into soils in a three-year field experiment (2015–2017). The experiment was carried out at the experimental station at Humpolec (Bohemian-Moravian Highlands, Czech Republic). Three rates of phosphorus (20-40-80 kg P/ha) were applied as triple superphosphate. The crop rotation was spring barley-winter oilseed rape-winter wheat. No systematic fertilization with B was used and the response of natural boron soil content to the different phosphorus supply was studied. The crop yields, B content in p

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Matula, J. "Relationship between phosphorus concentration in soil solution and phosphorus in shoots of barley." Plant, Soil and Environment 57, No. 7 (July 14, 2011): 307–14. http://dx.doi.org/10.17221/149/2011-pse.

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Phosphorus concentration in the soil solution of agricultural soils should be a consensus of the agronomic and environmental aspect. Data from literary sources are inconsistent if the method of soil solution extraction from the soil and the method of phosphorus detection are not indicated. In the present paper a simplified procedure of soil solution extraction is used that is derived from the need of water to attain saturated soil paste. Based on barley cultivation in a plant growth chamber on 72 different soils the relationship between P concentration in simulated soil solution and the respon

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Neff, J. C., J. W. Harden, and G. Gleixner. "Fire effects on soil organic matter content, composition, and nutrients in boreal interior Alaska." Canadian Journal of Forest Research 35, no. 9 (September 1, 2005): 2178–87. http://dx.doi.org/10.1139/x05-154.

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Boreal ecosystems contain a substantial fraction of the earth's soil carbon stores and are prone to frequent and severe wildfires. In this study, we examine changes in element and organic matter stocks due to a 1999 wildfire in Alaska. One year after the wildfire, burned soils contained between 1071 and 1420 g/m2 less carbon than unburned soils. Burned soils had lower nitrogen than unburned soils, higher calcium, and nearly unchanged potassium, magnesium, and phosphorus stocks. Burned surface soils tended to have higher concentrations of noncombustible elements such as calcium, potassium, magn

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Szabó, Emese, László Huzsvai, Rita Kremper, and Jakab Loch. "Relationship between the 0.01 M CaCl2- and AL-soluble soil phosphorus contents." Agrokémia és Talajtan 67, no. 1 (June 2018): 23–33. http://dx.doi.org/10.1556/0088.2018.67.1.2.

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The traditional Hungarian method for determining soil phosphorus (P) status is ammonium-lactate acetic acid (AL) extraction. AL is an acidic solution (buffered at pH 3.75), which is also able to dissolve P reserves, so there is a need for extraction methods that also characterize the mobile P pool. 0.01 M CaCl2-P is considered to directly describe available P forms, because the dilute salt solution has more or less the same ionic strength as the average salt concentration in many soil solutions. The amount of AL-P may be two orders of magnitude greater than that of CaCl2-P. Previous studies su

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Zhang, Qian, Guilin Han, Man Liu, and Lingqing Wang. "Geochemical Characteristics of Rare Earth Elements in Soils from Puding Karst Critical Zone Observatory, Southwest China." Sustainability 11, no. 18 (September 11, 2019): 4963. http://dx.doi.org/10.3390/su11184963.

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Soil samples from eight soil profiles under different land-use types were collected at the Puding Karst Critical Zone Observatory, Southwest China, to investigate the distribution, fractionation, and controlling factors of rare earth elements (REEs). The total REEs contents in topsoil ranged from 149.97 to 247.74 mg kg−1, the contents in most topsoil were higher than local soil background value (202.60 mg kg−1), and the highest content was observed in topsoil under cropland. The REEs contents in surface soils from lower slopes sites were higher than that of middle and upper slope sites, and th

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Opeyemi, Akintola, Bodede Adewunmi, and Abiola Oluwaseyi. "Physical and Chemical Properties of Soils in Gambari Forest Reserve Near Ibadan, South Western Nigeria." Journal of Bioresource Management 7, no. 2 (June 1, 2020): 57–67. http://dx.doi.org/10.35691/jbm.0202.0132.

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The different features of soil greatly affect the flora and vegetative diversity of a forest. The physical and chemical characteristics of soils in Onigambari Forest Reserve were evaluated to assess the fertility and productivity status of the soils. Fifteen soil samples collected from different sample locations were analyzed for soil texture (sand, silt and clay), bulk density, porosity, pH, organic matter, total nitrogen, available phosphorus, exchangeable bases (Na, K, Ca and Mg) and available micronutrients (Zn, Cu, Fe and Mn). Texturally, the studied soils were loamy sand and sandy loam w

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32

Alamgir, Md, and Petra Marschner. "Changes in phosphorus pools in three soils upon addition of legume residues differing in carbon/phosphorus ratio." Soil Research 51, no. 6 (2013): 484. http://dx.doi.org/10.1071/sr12378.

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Abstract (sommario):

Previously we showed that addition of legume residues affected the size of different soil phosphorus (P) pools in an alkaline loamy sand soil. Here, we tested whether the changes in soil P pools induced by residue addition are generally applicable or whether they are dependent on certain soil properties. Three legume residues differing in P concentration, faba bean (Vicia faba L.) (high P), chickpea (Cicer arietinum L.) (medium P), and white lupin (Lupinus albus L.) (low P), were added at a rate of 20 g residue kg–1 soil to three different soils with low Colwell-P concentration: Mt Bold (sandy

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33

Füleky, György. "Phosphorus Supply of Typical Hungarian Soils." Agrokémia és Talajtan 55, no. 1 (March 1, 2006): 117–26. http://dx.doi.org/10.1556/agrokem.55.2006.1.13.

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Abstract (sommario):

The new hot water percolation (HWP) method was introduced to determine the phosphorus supply of soils from the Soil Bank of 36 Hungarian soils. The present work aimed to explain the availability of phosphorus by determining the inorganic phosphate fractions and using ryegrass test plants. Four inorganic phosphate fractions were distinguished: Fraction I, the sorbed phosphates; Fraction II, the easily soluble Ca phosphates and the Al bound phosphates; Fraction III, the Fe phosphates; and Fraction IV, the hardly soluble Ca phosphates. Fraction II, in which the easily soluble Ca phosphates and Al

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34

Zakharova, I. A., and Kh S. Iumashev. "PHOSPHORUS AND POTASSIUM RESERVES IN THE MAIN TYPES OF ZONAL SOILS OF THE CHELYABINSK REGION." Bulletin of NSAU (Novosibirsk State Agrarian University), no. 3 (October 24, 2020): 38–45. http://dx.doi.org/10.31677/2072-6724-2020-56-3-38-45.

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Abstract (sommario):

One of the most important tasks of land monitoring is to control the content of gross and mobile forms of basic nutrients in soils. The phosphate-potassium regime of the soil depends not only on its type and the geochemical composition of the soil-forming rock, but also on the landscape and the level of chemicalization of the soil. The low content of phosphorus in the soil in the main area of agricultural land limits the productivity of agrocenoses. The reserves of potassium in the soils of the region are quite high. However, monitoring of this indicator is still important. A comparative asses

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35

Cheesman, A. W., B. L. Turner, and K. R. Reddy. "Forms of organic phosphorus in wetland soils." Biogeosciences 11, no. 23 (December 4, 2014): 6697–710. http://dx.doi.org/10.5194/bg-11-6697-2014.

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Abstract (sommario):

Abstract. Phosphorus (P) cycling in freshwater wetlands is dominated by biological mechanisms, yet there has been no comprehensive examination of the forms of biogenic P (i.e., forms derived from biological activity) in wetland soils. We used solution 31P NMR spectroscopy to identify and quantify P forms in surface soils of 28 palustrine wetlands spanning a range of climatic, hydrogeomorphic, and vegetation types. Total P concentrations ranged between 51 and 3516 μg P g-1, of which an average of 58% was extracted in a single-step NaOH–EDTA procedure. The extracts contained a broad range of P f

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36

Stamenov, Dragana, Mirjana Jarak, Simonida Djuric, Hajnal Jafari, and Dragana Bjelic. "Microbiological transformations of phosphorus and sulphur compounds in acid soils." Zbornik Matice srpske za prirodne nauke, no. 123 (2012): 27–36. http://dx.doi.org/10.2298/zmspn1223027s.

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Abstract (sommario):

The dynamics of phosphorus and sulphur in soil is closely related to the dynamics of the biological cycle in which microorganisms play a central role. There is not much microbiological activity in acid soils because aerobes are scarce, rhizosphere is restricted to the shallow surface layer, and the biomass of microorganisms decreases with higher acidity. The aim of the research was to investigate the number of microorganisms, which decompose organic and inorganic phosphorus compounds and organic sulphur compounds in calcocambisol, luvisol, and pseudogley. The following parameters were determin

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37

Krzyżaniak, M., and J. Lemanowicz. "Enzymatic activity of the Kuyavia Mollic Gleysols (Poland) against their chemical properties ." Plant, Soil and Environment 59, No. 8 (July 31, 2013): 359–65. http://dx.doi.org/10.17221/211/2013-pse.

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Abstract (sommario):

The research results have shown that the enzyme pH index (0.49&ndash;0.83) confirmed the neutral or alkaline nature of the soils. Neither the changes in the content of available phosphorus nor in the activity of dehydrogenases, catalase, alkaline and acid phosphatase in soil were due to the factors triggering soil salinity; they were a result of the naturally high content of carbon of organic compounds, which was statistically verified with the analysis of correlation between the parameters. There were recorded highly significant values of the coefficients of correlation between the conten

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38

Igbozuruike, Christopher Ifeanyi. "Phosphorus Forms and Fixing Potentials of Mbaitoli Soils in Imo State, Nigeria." International Journal of Research and Innovation in Social Science 06, no. 09 (2022): 680–85. http://dx.doi.org/10.47772/ijriss.2022.6933.

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Abstract (sommario):

The study was conducted in four different locations in Mbaitoli namely; Ifakala, Umunoha, Ogwa and Orodo in Imo State Nigeria to determine different forms and levels of phosphorus in the selected soils of the area. Fifteen composite samples were collected from the top soil (0-15cm) and sub soil (15-30cm). The fifteen composite soil samples were then bulked and a sample taken from each of the location giving a total of four representative samples. The representative soils were analyzed for physical and chemical properties. Total and Organic phosphorus were determined by standard laboratory proc

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39

Marler, Thomas E., and Michael Calonje. "Two Cycad Species Affect the Carbon, Nitrogen, and Phosphorus Content of Soils." Horticulturae 6, no. 2 (April 10, 2020): 24. http://dx.doi.org/10.3390/horticulturae6020024.

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Abstract (sommario):

The influences of Cycas micronesica and Zamia integrifolia plants on soil chemistry were determined in Tinian and Florida in order to more fully understand how cycad plants affect the environments in which they grow. The introduction of C. micronesica plants into a karst habitat generated decreases in soil phosphorus after five years and increases in soil nitrogen after six years. The carbon:nitrogen:phosphorus stoichiometry beneath the cycad plants significantly diverged from those of the adjacent native forests with Pisonia grandis, Psychotria mariana, Aglaia mariannensis, Cynometra ramiflor

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40

Dursun, Nesim, Sait Gezgin, and Mehmet Musa Özcan. "The Determine of Sugar Beet Nutrition Problems in Konya Plain’s Soils." Advanced Research in Life Sciences 1, no. 1 (July 26, 2017): 7–20. http://dx.doi.org/10.1515/arls-2017-0002.

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Abstract (sommario):

Abstract This study was aimed to determine the deficiency or excessivity of nutrients for sugar beet crop in Konya plain. The results showed that the pH value was found as 7.65 and soils were classified as sodic; the organic matter was 1.59% and 92.9% of the soil samples was poor in terms of the organic matter. The mean lime content (CaCO3) was determined capacity was 26.07 and 97.1% of the soil samples was limy and the mean cation Exchange capacity was 26.07 me/100g, and it was varied between 10.72 me/100g and 44.7 me/100g. The mean available NH4+NO3 nitrogen content, phosphorus and potassium

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41

Hossin, Md Shahin, Alok Kumar Paul, Md Fazlul Hoque, Morsheda Akter Mukta, and Md Delower Hossain. "Estimation of Fertility Status of Coastal Soils for Agricultural Planning in Bangladesh." Haya: The Saudi Journal of Life Sciences 7, no. 5 (May 15, 2022): 142–50. http://dx.doi.org/10.36348/sjls.2022.v07i05.001.

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Abstract (sommario):

A study was conducted to know the fertility status of coastal soils of Bangladesh for agricultural planning. Thirty composite soil samples were collected from different locations of Kalapara upazila under Patuakhali coastal district in Bangladesh with Geographic Positioning System (GPS) positions. The soil samples were analyzed for physical properties (moisture, texture, bulk density, particle density and porosity) and chemical properties (pH, electrical conductivity, total nitrogen, organic carbon, exchangeable sodium, exchangeable potassium, available sulphur and available phosphorus). The r

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42

Szymański, Wojciech, Bronisław Wojtuń, Mateusz Stolarczyk, Janusz Siwek, and Joanna Waścińska. "Organic carbon and nutrients (N, P) in surface soil horizons in a non-glaciated catchment, SW Spitsbergen." Polish Polar Research 37, no. 1 (March 1, 2016): 49–66. http://dx.doi.org/10.1515/popore-2016-0006.

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Abstract (sommario):

AbstractOrganic carbon, nitrogen, and phosphorus in the soils of the High Arctic play an important role in the context of global warming, biodiversity, and richness of tundra vegetation. The main aim of the present study was to determine the content and spatial distribution of soil organic carbon (SOC), total nitrogen (Ntot), and total phosphorus (Ptot) in the surface horizons of Arctic soils obtained from the lower part of the Fuglebekken catchment in Spitsbergen as an example of a small non-glaciated catchment representing uplifted marine terraces of the Svalbard Archipelago. The obtained re

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43

BANDUROVICH, Y., A. V. FANDALІUK, and V. O. ROMANKO. "EKOLOGICAL FNDO-AGROCHEMICAL MONITORING OF SOILS OF MUKACHEVO DISTRICT TRANSCARPATHIA REGION." PROBLEMS OF AGROINDUSTRIAL COMPLEX OF KARPATY 29 (2021): 16–26. http://dx.doi.org/10.47279/2709-3727-2021-1-2.

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Abstract (sommario):

According to the results of the research, an agrochemical assessment of the soils of agricultural lands of Mukachevo district was carried out. It is proved that more than half of the area in Mukachevo district (63.4%) belongs to acid soils. It was found that the weighted average humus index is 2.48%, which corresponds to the average level. The weighted average indicators of the content of mobile compounds of nitrogen, phosphorus and potassium are determined. According to the agrochemical condition of agricultural lands of Mukachevo district for the period from 2008 to 2018, it was found that t

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44

Antilén, Mónica, Margarita Briceño, Gerardo Galindo, and Mauricio Escudey. "Effect of biosolids on the organic matter content and phosphorus chemical fractionation of heated volcanic Chilean soils." Soil Research 46, no. 5 (2008): 415. http://dx.doi.org/10.1071/sr07130.

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Abstract (sommario):

Biosolids produced in wastewater treatment plants with high organic matter (OM) content can be used to reclaim organic components in heated soils. The impact of biosolids amendment on soil pH, electric conductivity (EC), exchangeable cations, OM content, and phosphorus (P) chemical fractionation in 3 heated volcanic soils in southern Chile was investigated in a 4-month incubation study. In amended heated soils, pH, EC, OM content, and exchangeable cations were greater than in control soils. The control OM content was increased by biosolids, and the incubation time effect to reclaim the organic

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45

Sarkar, D., and G. A. O'Connor. "Plant and Soil Responses to Biosolids–Phosphorus in Two Florida Soils with High Phosphorus Content." Communications in Soil Science and Plant Analysis 35, no. 11-12 (December 31, 2004): 1569–89. http://dx.doi.org/10.1081/css-120038555.

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46

Xi, Wang, Lu Shuchang, Pei Zhiqiang, Hou Kun, Ya Zongjie, Zhang Yu, Wang Dafeng, and Li Xiawen. "Effects of Soil Conditioners on Absorption of phosphorus by waxy corn and Phosphorus Transformation in High Phosphorus Soils." E3S Web of Conferences 143 (2020): 02024. http://dx.doi.org/10.1051/e3sconf/202014302024.

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Abstract (sommario):

In this experiment, the effects of different types of conditioners and their application on the absorption and transformation of phosphorus in high phosphorus soils in facilities were investigated to improve the environmental problems of protected farmland caused by phosphorus accumulation. Waxy corn was used as a test crop, and five conditioners such as humic acid, biochar, bentonite, alum, and dephosphorized gypsum were used as test materials for potting experiments. The experiment set 10 treatments, namely T1(Blank control), T2(Humic acid), T3(Biochar), T4(Bentonite), T5(Alum), T6 (Dephosph

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47

Niemiec, Marcin, Maciej Chowaniak, Jakub Sikora, Anna Szeląg-Sikora, Zofia Gródek-Szostak, and Monika Komorowska. "Selected Properties of Soils for Long-Term Use in Organic Farming." Sustainability 12, no. 6 (March 23, 2020): 2509. http://dx.doi.org/10.3390/su12062509.

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Abstract (sommario):

The goal of organic farming with respect to plant production is to create high-quality products while minimizing human impacts. The aim of this paper was to assess soil properties in selected organic farms in terms of the achievement of general and specific objectives of organic farming. Fifty five (55) organic farms were selected for the research; twenty five (25) of those farms additionally had conventional animal production with cattle breeding. Soil samples were collected from each farm and, the following parameters, deciding about the suitability for agriculture were determined: pH, conte

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48

Szara, Ewa, Tomasz Sosulski, and Magdalena Szymańska. "Impact of long-term liming on sandy soil phosphorus sorption properties." Soil Science Annual 70, no. 1 (March 1, 2019): 13–20. http://dx.doi.org/10.2478/ssa-2019-0002.

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Abstract (sommario):

Abstract The static fertilisation experiment conducted in Skierniewice (Central Poland) since 1923 investigates the effect of mineral fertilisation with lime (CaNPK) or without lime (NPK) on the accumulation and release of phosphorus in reference to phosphorus sorption properties in the sandy soil profile. In the case of application of same doses of mineral fertilisers, the content of total phosphorus was higher in NPK than CaNPK soil. Parameters related to sorption capacity and bonding energy from Langmuir and Freundlich model of P sorption were significantly lower in CaNPK than NPK soil prof

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49

Klement, Rejšek. "The Quantitative Estimate of Bioavailable Inorganic Phosphorus Content in Forest Soils by the Modification of the Anion-Exchange Resin Method." Soil and Water Research 1, No. 4 (January 7, 2013): 117–26. http://dx.doi.org/10.17221/6513-swr.

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Abstract (sommario):

The anion-exchange resin (AER) method for the estimation of bioavailable phosphorus was slightly optimised for soils with high contents of readily soluble organic compounds as well as for those having very dif&shy;ferent clay and sand contents. The method based on a strong base anion exchanger, the active group of trimethyl benzyl ammonium, the field moist soil, and the enclosure of resin beds in a bag was very different soils under relatively uniform outer conditions where the determination of the absorbance of (blue) phosphate-molybdate complex at 870 nm is used. The motivation of the pr

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50

Diomandé, L. B., G. R. Soro, S. Soro, and Et Yao Kouamé A. "CHEMICAL SOIL FERTILITY DIAGNOSIS FOR COTTON CROPPING IN NORTHERN COTE D'IVOIRE." International Journal of Research -GRANTHAALAYAH 9, no. 8 (August 31, 2021): 27–34. http://dx.doi.org/10.29121/granthaalayah.v9.i8.2021.4130.

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Abstract (sommario):

The work was conducted in the north of Cote d’Ivoire, central pivot cotton production savannah area, to make the diagnosis of soil fertility for cotton cropping. Cotton cropping, the mainstay of the savannah's economy, suffered from low productivity in relation to the soils chemical properties. Prior cultivation, soils samples were collected at a depth of 0 to 30 cm, collecting 32 simple samples to generate a complete sample. The samples were sent to the soil laboratory to measure the pH unities, CEC, nitrogen, phosphorus, potassium, calcium, magnesium, sodium, iron, zinc, copper and manganese

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