scholarly journals Characterization and identification of contemporary diagnostic (B) horizons of some soils in Ideato North local government area of Imo state Southeastern Nigeria

2021 ◽  
pp. 76-86
Author(s):  
Onyekanne C. F. ◽  
Uzoh I. M ◽  
Ezeaku P.I ◽  
Akamigbo F. O. R.
Keyword(s):  
Cation Exchange ◽  
Cation Exchange Capacity ◽  
Sandy Loam ◽  
Soil Bulk Density ◽  
Exchange Capacity ◽  
Potassium Cation ◽  
Survey Method ◽  
Available Phosphorus ◽  
Acidic Ph ◽  
Southeastern Nigeria

Most soils in Nigeria have not been characterized and classified based on diagnostic B horizon and identification of diagnostic B horizon is essential in the study of soils. As a result, this study was carried out to characterize and classify these soils with special emphasis on the identification of diagnostic B- horizons. A free survey method was employed to locate the representative profiles. Ten profile pits were dug, studied macromorphologically, georeferenced and sampled based on identified horizons. Results were presented using descriptive statistics. Soil textural classes consisted of sand, loamy sand, sandy loam and sandy clay loam. Soil bulk density was low to high ranging from 1.23g/cm3 to 1.94g/cm3. Soil pH values were extremely acidic (pH 4.4) to slightly acidic (pH 6.1). Exchangeable calcium and magnesium were low to high, ranging from 0.20cmol/kg to 6.20cmol/kg for calcium and from trace to 30.20cmol/kg for magnesium while that of sodium and potassium were very low ranging from 0.005 to 0.052cmol/kg for sodium and from 0.003cmol/kg to 0.016cmol kg-1 for potassium. Cation exchange capacity was low to high ranging from 5.20cmol kg-1 to 51.20cmol kg-1. Exchangeable acidity was trace to low; soil organic matter was low to high ranging from 0.07 g/kg to 5.00 g/kg. Percentage base saturation was low to very high ranging from 2.32% to 82.20%. Effective cation exchange capacity were low (1.457cmol kg-1) to high (35.56cmol kg-1). The available phosphorus is low ranging from 0.004cmol/kg to 0.013cmol/kg. Water dispersible clay values range d from 4.32% - 20.32%. The diagnostic criteria such as clay coatings/cutans, subsurface to surface clay ratio of 1.2, lithologic discontinuity, abrupt textural changes, artefacts, CEC. ECEC, etc. were identified. The two diagnostic B- horizons identified in the study areas were Kandic horizon and Argillic horizon (USDA) which correlate with Argic horizon (FAO/UNESCO (WRB).

Influence of organic waste amendments on selected soil physical and chemical properties

1999 ◽  
Vol 79 (3) ◽  
pp. 501-504 ◽  
Author(s):  
B. J. Zebarth ◽  
G. H. Neilsen ◽  
E. Hogue ◽  
D. Neilsen
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Cation Exchange ◽  
Bulk Density ◽  
Soil Water ◽  
Cation Exchange Capacity ◽  
Water Retention ◽  
Organic Waste ◽  
Soil Bulk Density ◽  
Exchange Capacity

Sandy, infertile soils can benefit from the addition of organic waste amendments. Annual applications of organic wastes for as long as 4 yr increased soil organic matter content, decreased soil bulk density, and increased soil water retention of a coarse-textured soil. However, soil water-holding capacity was not necessarily increased, and there was a limited effect on soil cation exchange capacity. Key words: Cation exchange capacity, water retention, soil pH, soil organic matter, soil bulk density

scholarly journals THE EVALUATION OF THE RESIDUAL EFFECT OF FERTILIZER IN LONG-TERM FERTILITY PLOTS: I. POTASSIUM

1963 ◽  
Vol 43 (2) ◽  
pp. 229-234 ◽  
Author(s):  
A. A. MacLean ◽  
J. J. Doyle
Keyword(s):  
Nitric Acid ◽  
Cation Exchange ◽  
Cation Exchange Capacity ◽  
Surface Soil ◽  
Sandy Loam ◽  
Residual Effect ◽  
Exchange Capacity ◽  
Residual Effects ◽  
Intensive Cropping

Residual effects of long-term annual applications of fertilizer potassium on the potassium status of an acid sandy loam Podzol were investigated, in a greenhouse experiment. Potassium accumulated in the surface soil in a form readily available to plants.On plots with higher cation exchange capacities, resulting from manurial treatments, there was no evidence to indicate leaching below 15 inches. On plots where cation exchange capacity was not increased by treatment, a higher percentage potassium saturation at greater depths indicates that leaching of potassium had occurred to a depth of 21 inches. An increased concentration of nitric acid-soluble potassium at greater depths suggests that some of the leached potassium has been converted to the non-exchangeable form.Accumulation in the surface soil was sufficient to supply most of the potassium requirement of ladino clover under conditions of intensive cropping. The results suggest that exchangeable and nitric acid-soluble potassium are reliable criteria of available potassium.

scholarly journals Contribution of the chemical and mineralogical properties of sandy-loam tropical soils to the cation exchange capacity

2020 ◽  
Vol 44 ◽  
Author(s):  
Antonio Carlos Saraiva da Costa ◽  
Ivan Granemann de Souza ◽  
Leila Cristina Canton ◽  
Luciano Grillo Gil ◽  
Rodolfo Figueiredo
Keyword(s):  
Cation Exchange ◽  
Cation Exchange Capacity ◽  
Sandy Loam ◽  
Tropical Soils ◽  
Exchange Capacity ◽  
Mineralogical Properties

scholarly journals Effects of Tree Forest Plantations on Soil Physicochemical Properties in the Arboretumof Ruhande,Southern Province of Rwanda

2020 ◽  
Vol 3 (1) ◽  
Author(s):  
Nsengimana Venuste
Keyword(s):  
Organic Carbon ◽  
Physicochemical Properties ◽  
Cation Exchange ◽  
Bulk Density ◽  
Soil Ph ◽  
Tree Species ◽  
Cation Exchange Capacity ◽  
Exchange Capacity ◽  
Available Phosphorus ◽  
Soil Physicochemical Properties

Different tree speciesare blamed to have negative effects on soil ecosystems by changing soil physicochemical properties, and hence soil quality. However, few researches to verify this statement were done in Rwanda. This study provides prior information on the effects of planted forest tree species on soil physicochemical properties. It was conducted in the Arboretum of Ruhande, in southern Rwanda. Soil cores were collected in plots of exotic, native and agroforestry tree species. Collected soils were analysed for soil pH, total nitrogen, organic carbon, available phosphorus,  aggregate stability, bulk density, soil humidity, cation exchange capacity, and soil texture. Soils sampled under exotic tree species were acidic, richin soil organic carbon, and in soil available phosphorus. Native and agroforestry tree species offer better conditions in soil pH, soil water content, cation exchange capacity, clay and silt. Less variations in soil total nitrogen and soil bulk density were found in soils sampled under all studied forest types. Research concluded that studiedtree species have different effects on soil physicochemical parameters. It recommended further studies to generalize these findings. Key words: soil, exotic, native, agroforestry, soil properties

The presence of indigenous glauconite in soils and its effect on soil fertility:I. Soils developed on sandy drift (Barming series)

1975 ◽  
Vol 84 (1) ◽  
pp. 137-141 ◽  
Author(s):  
S. G. McRae
Keyword(s):  
Nitric Acid ◽  
Cation Exchange ◽  
Cation Exchange Capacity ◽  
Magnesium Content ◽  
Exchange Capacity ◽  
Potassium Cation ◽  
Exchangeable Potassium ◽  
Test Procedures ◽  
Potassium Supply ◽  
Available Phosphate

SUMMARYThe fertility, especially potassium status, of the Barming series in East Kent was studied by laboratory and pot test procedures to determine the effect of indigenous glauconite. Half of 12 otherwise similar soils contained appreciable glauconite.Glauconite contributed positively to the potassium status of the soils, especially the B horizons (45–65 cm), and was associated with higher values of exchangeable potassium, cation exchange capacity, nitric acid soluble potassium and intensity of potassium supply as measured by ΔḠ. More potassium was taken up and more released from initially non-exchangeable sources to ryegrass from the glauconitic soils. The available magnesium content of the soils was also positively correlated with glauconite content but available phosphate was not.

scholarly journals Effect of chemical soil properties on the growth of cajuput (Melaleuca leucadendron (L.) Linnaeus) stand

2019 ◽  
Vol 8 (1) ◽  
pp. 1
Author(s):  
Ronggo Sadono ◽  
Djoko Soeprijadi ◽  
Pandu Yudha Adi Putra Wirabuana
Keyword(s):  
Cation Exchange ◽  
Soil Sample ◽  
Total Nitrogen ◽  
Cation Exchange Capacity ◽  
Chemical Properties ◽  
Basal Area ◽  
Exchange Capacity ◽  
Soil Chemical Properties ◽  
Available Phosphorus ◽  
Stand Growth

Soil chemical properties play important roles to support plant growth. It determines the nutrient availability which is required by the plant. This study aimed to identify the influence of soil chemical properties on cajuput stand growth. It was conducted in Forest Resort Gubugrubuh, Gunungkidul District. Data collection was undertaken in 3 sites that became the priority sites of cajuput establishment, namely site 75, site 78, and site 80. It was divided into soil sample collection and cajuput stand measurement. The soil sample was collected from surface layer at depth of 0-15 cm. Afterward, it was tested in the laboratory for soil pH, soil organic carbon, total nitrogen, available phosphorus, total potassium, and cation exchange capacity (CEC). The measurement of cajuput stand was carried out by N-trees sampling. The variable of the stand was described by diameter and basal area. Comparison of soil chemical properties and cajuput stand growth from each site were analyzed using One Way ANOVA (α=0.05) followed by HSD Tukey (α=0.05). Furthermore, we used Stepwise Regression (α=0.05) to identify the influence of soil chemical properties on cajuput stand growth. The results showed that total nitrogen was the only soil chemical parameter that was significantly different between sites (p<0.05). However, the growth of cajuput stands was not significantly different between sites (p<0.05). This study found that available phosphorus and cation exchange capacity had clearly influenced on diameter and basal area.

scholarly journals Nutrient status of soil and regenerated Garjan (Dipterocarpus turbinatus Gaertn.) seedlings in Dulahazara Garjan Forest, Cox’s Bazar, Bangladesh

2018 ◽  
Vol 7 (2) ◽  
pp. 79-88
Author(s):  
MK Huda ◽  
MAM Chowdhury
Keyword(s):  
Organic Carbon ◽  
Cation Exchange ◽  
Cation Exchange Capacity ◽  
Sandy Loam ◽  
Nutrient Status ◽  
Exchange Capacity ◽  
Total N ◽  
Top Soil ◽  
Forest Division ◽  
Silty Loam

Soil: Plant nutrient status in naturally regenerated garjan (Dipterocarpus turbinatus Gaertn.) seedlings of 3, 9, 15, 21, 27 and 33 months old were studied in twelve stands of three sites on late and early monsoon during 1994 to 1995 in Dulahazara garjan forest of Cox’s Bazar forest division. Soil samples were collected from two profiles (i.e. top soil and sub soil) of twelve stands in three sites. Soil moisture content, pH, texture, electrical conductivity, cation exchange capacity, organic carbon, total N and available P, K, Ca, Mg, Mn and Fe were determined. Soils were found to be silty loam to sandy loam with an average pH of 5.06. The average values of organic carbon and cation exchange capacity were 0.74% and 6.23 meq/100g respectively. The soils were poor in total nitrogen (689 μg g-1) and the average values of available mineral nutrients such as P, K, Ca, Mg, Mn and Fe in soil were 3.15, 53, 40, 47, 36 and 0.94 μg g-1, respectively. The soil in site -S2 appeared to be more fertile than those of site-S1 and site-S3. The average values of N, P, K, Ca, Mg, Mn and Fe in leaf- bud were found to be 1.80, 0.13, 0.94, 0.72, 0.23, 0.06 and 0.014% respectively. Leaf-bud nutrients showed a marked variation both with seasons as well as ages. Leaf-bud of late monsoon contained higher concentrations of P, Mg and Ca compared to leaf-bud of early monsoon which contained higher concentrations of N, K and Fe. Nutrient cycling in soil:leafbud system of regenerated garjan seedling of 3-33 months old varied with seasons and ages. The present study reveals that concentrations of Mn were significantly correlated between leaf-bud and soil whereas P showed the negative correlation indicating that in spite of low quantity of P in the soil, leaf bud had higher quantity. Jahangirnagar University J. Biol. Sci. 7(2): 79-88, 2018 (December)

scholarly journals Adsorption of Atrazine and Terbacil by Soils

1969 ◽  
Vol 55 (4) ◽  
pp. 451-460
Author(s):  
L. C. Liu ◽  
H. Cibes-Viadé ◽  
F. K. S. Koo
Keyword(s):  
Organic Matter ◽  
Cation Exchange ◽  
Puerto Rican ◽  
Cation Exchange Capacity ◽  
Sandy Loam ◽  
Organic Matter Content ◽  
Exchange Capacity ◽  
Matter Content ◽  
Sand Content ◽  
Calcium Magnesium

The differential in the adsorption capacity of 2-chloro-4-(ethylamino)-6- (isopropylamino)-s-triazine (Atrazine) and 3-tert.-butyl-5-chloro-6-methyl- uracil (Terbacil) by 34 Puerto Rican soils was studied in the laboratory using C14-labeled herbicides. The various soils differed greatly in their capacity to adsorb Atrazine and Terbacil. The Caño Tiburones soil was found to be the most adsorptive for both herbicides; the Toa sandy loam and Talante sandy loam the least for Atrazine and Terbacil, respectively. Atrazine was consistently adsorbed to a greater degree than Terbacil. Adsorption of Atrazine was correlated positively with organic matter content, cation exchange capacity and magnesium and silt content but negatively with sand content. Adsorption of Terbacil was positively correlated with organic matter, cation exchange capacity, soil pH, content of phosphorus, calcium, magnesium and clay but negatively with sand content of the soil. Representative adsorption isotherms of Atrazine and Terbacil on several important island soils devoted to sugarcane cultivation are also presented in this report.

EVALUASI PERUBAHAN KUALITAS TANAH PADA LAHAN BEKAS PENAMBANGAN NIKEL DI PULAU GEBE

2018 ◽  
Vol 4 (1) ◽  
Author(s):  
Mardi Wibowo
Keyword(s):  
Organic Carbon ◽  
Cation Exchange ◽  
Cation Exchange Capacity ◽  
Exchange Capacity ◽  
Mining Activity ◽  
Evaluation Activity ◽  
Land Quality ◽  
Environment Quality

Since year 1977 until 2005, PT. ANTAM has been exploited nickel ore resources at Gebe Island – Center ofHalmahera District – North Maluku Province. Mining activity, beside give economically advantages also causedegradation of environment quality espicially land quality. Therefore, it need evaluation activity for change ofland quality at Gebe Island after mining activity.From chemical rehabilitation aspect, post mining land and rehabilitation land indacate very lack and lackfertility (base saturated 45,87 – 99,6%; cation exchange capacity 9,43 – 12,43%; Organic Carbon 1,12 –2,31%). From availability of nutrirnt element aspect, post mining land and rehabilitation land indicate verylack and lack fertility (nitrogen 0,1 – 1,19%). Base on that data, it can be concluded that land reclamationactivity not yet achieve standart condition of chemical land.Key words : land quality, post mining lan

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