scholarly journals Distribution of extractable calcium, magnesium, potassium, and sodium in various depths of some virgin peat soils

1956 ◽  
Vol 28 (1) ◽  
pp. 237-247
Author(s):  
Armi Kaila ◽  
Jaakko Kivekäs
Keyword(s):  
Ammonium Chloride ◽  
Negative Correlation ◽  
Magnesium Content ◽  
Surface Layers ◽  
Peat Soils ◽  
Calcium Magnesium ◽  
Calcium And Magnesium ◽  
Surface Vegetation

It has been attempted in the present paper to study the distribution of plant available calcium, magnesium, and potassium in various depths of 25 virgin peat lands. The amounts of these cations extractable by 1 N ammonium chloride are supposed to give a rough estimation on the available content of the nutrients. Also the quantities of extracted sodium are reported. It has been found that the percentic content of these cations in the surface vegetation are higher than in the peat. Particularly marked is the accumulation of potassium in living plants and, although in a less degree, in the surface layers of peat. The variation in the distribution of the extractable amounts of the cations in various depths of the peat lands is considerable. A significant correlation exists between the depth and the magnesium content, and a negative correlation between the depth and the amount of extractable potassium. So far as the amount of cations extracted by 1 N ammonium chloride represents nutrients available for plants, calcium and magnesium are not generally minimum factors in peat soils, whereas in most soils the sources of potassium probably will be depleted by the first crops.

The determination of exchangeable calcium and magnesium in carbonate soils.

1954 ◽  
Vol 5 (4) ◽  
pp. 706 ◽  
Author(s):  
BM Tucker
Keyword(s):  
Calcium Carbonate ◽  
Ammonium Chloride ◽  
Free Water ◽  
Soil Samples ◽  
Acetate Anion ◽  
Mean Values ◽  
Calcium Magnesium ◽  
Calcium And Magnesium ◽  
Better Than

The solubilities of calcium and magnesium from calcium carbonate, dolomite, and magnesite, in a normal solution of ammonium chloride in 60 per cent. ethanol, adjusted to pH 8.5 with ammonia, are the same as or a little less than those in air-free water. Such a solution is suitable for the extraction of exchangeable metal cations from soil samples containing these carbonates. A single extraction yields a solution in which calcium, magnesium, sodium, and potassium may all be determined. Ammonium chloride is better than the acetate because there appears to be a specific solution effect associated with the acetate anion. The amounts of calcium and magnesium extracted by this solution from soil samples presumed to be in equilibrium with, but not containing, carbonates, are not altered by the addition of excess calcium carbonate or dolomite. An examination of 18 carbonate soils gave mean values of 16.5 m-equiv. of calcium and 11.7 of magnesium per 100 g of sample compared with 16.4 and 11.7 m-equiv. respectively by a double leaching method with normal sodium chloride solution.

scholarly journals 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

2015 ◽  
Vol 66 (1) ◽  
pp. 3-9 ◽  
Author(s):  
Antoni Rogóż ◽  
Monika Tabak
Keyword(s):  
Phosphorus Content ◽  
Ph Value ◽  
Calcium Content ◽  
Magnesium Content ◽  
Soil Reaction ◽  
Potato Tubers ◽  
Ph Values ◽  
Root Crops ◽  
Calcium Magnesium ◽  
Calcium And Magnesium

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. phosphorus, calcium, magnesium in the cultivated fodder beets and potatoes depended on abundance and form in which the studied elements occurred in soil, and also on specie and analyzed part of the plant. Along with the increase in pH values of the an increase in the phosphorus content and reduction of the magnesium content in the roots and above-ground parts of the beets were found. The calcium content in the roots increased along with an increase in pH of the soils, whereas direction of changes in the content of this element in the petioles and laminae of the beets was not unambiguous. A slight decrease in the content of the studied elements in the potato tubers (along with the increase in pH of the soils) was found.

THE EFFECT OF LIME ON THE STATUS OF NITROGEN, PHOSPHORUS, POTASSIUM, CALCIUM AND MAGNESIUM IN A FEW VEGETABLES GROWN ON ACID PEAT SOILS

1962 ◽  
Vol 42 (3) ◽  
pp. 445-451
Author(s):  
J. J. Jasmin ◽  
H. B. Heeney
Keyword(s):  
Plant Growth ◽  
Soil Ph ◽  
Available Phosphorus ◽  
Peat Soils ◽  
The Status ◽  
Calcium Magnesium ◽  
Lime Application ◽  
Calcium And Magnesium ◽  
Phosphorus And Potassium ◽  
Nitrogen Phosphorus

A 2-year study on acid dome bogs has shown that 9 tons of agricultural limestone was preferable to 3 tons for onions and carrots. Yields of potatoes were not increased with lime applications above 3 tons per acre under the conditions of this test.Increments in lime application increased soil pH and available phosphorus and decreased the exchangeable potassium.Increments in lime application reduced the total nitrogen, phosphorus and potassium present in the plant tissue at time of sampling and increased calcium. Magnesium was not affected.Unless adequate lime is applied, high quantities of fertilizer may be detrimental to plant growth.

The comparative effects of exchangeable calcium, magnesium, and sodium on some physical properties of red-brown earth subsoils. I. Exchange reactions and water contents for dispersion of Shepparton soil

Soil Research ◽  
1973 ◽  
Vol 11 (2) ◽  
pp. 143 ◽  
Author(s):  
AC Bakker ◽  
WW Emerson ◽  
JM Oades
Keyword(s):  
Physical Properties ◽  
Water Content ◽  
Ammonium Chloride ◽  
Clay Fraction ◽  
Exchange Reactions ◽  
Exchangeable Calcium ◽  
Soil Calcium ◽  
Calcium Magnesium ◽  
Calcium And Magnesium ◽  
Water Contents

The susceptibility to waterlogging of red-brown earth subsoils is discussed. One of these, Shepparton, has been leached with chloride solutions of given SAR, in the range 0-7, the last solution being 1 mM in calcium or magnesium. The soil was then extracted with neutral lM ammonium chloride and the displaced cations measured. The exchange of sodium for both calcium and magnesium was similar, following the Gapon equation except at very low SAR values. Some potassium and sodium was extracted from calcium and magnesium soils. Shepparton soil of known SAR was remoulded over a range of water contents and synthetic aggregates formed. The percentage of the clay fraction which dispersed from the aggregates was measured. The water content for perceptible dispersion of magnesium soil was only about half that of calcium soil, the water contents being near the 15 bar and 0.1 bar values respectively for unsheared soil. The water content for dispersion decreased sharply with increasing SAR of the soil. Calcium-sodium soil with an ESP of 3.5 dispersed at the same water content as magnesium soil. Possible reasons for the enhanced dispersion of sheared, wet magnesium soil compared with similar calcium soil are discussed.

scholarly journals Estimated average calcium – magnesium content in day meal in a sample of students from Faculty of Medicine of Sarajevo University

2021 ◽  
Vol 9 (3) ◽  
pp. 090-095
Author(s):  
Amra Catovic ◽  
Ajla Custovic
Keyword(s):  
Total Sample ◽  
Magnesium Content ◽  
Cross Sectional Study ◽  
Cross Sectional ◽  
Average Intake ◽  
Optimal Health ◽  
Analysis Computer ◽  
Calcium Magnesium ◽  
Calcium And Magnesium ◽  
Diet Record

Nutrients are chemical substances obtained from food. They have different roles in body. Some are used as energy source, some as structural materials, and regulating agents. Nutrients may reduce the risks of some diseases. There are some recommendations about dietary intake of these nutrients for optimal health. This study aimed to estimate average calcium and magnesium content in day meal in a sample of students from Faculty of Medicine of Sarajevo University. A cross-sectional study was conducted during academic 2015/16 year at Faculty of Medicine of Sarajevo University. The survey covered 44 students. The research instrument was a self-administered questionnaire, by which 3-Day Diet Record was provided. The average intakes of calcium and magnesium were estimated using Nutritional analysis computer program (Nutrics Professional Nutrition Analysis Software). On daily level average intake of calcium was 718.39±311.14 mg in total sample and average intake of magnesium was 292.57±310.10 mg in total sample. Average Ca/Mg ratio was 2.45. In our sample cheese was top source of calcium with Ca/Mg ratio of 32.5, and bread was top source of magnesium with Ca/Mg ratio of 3.1. These results emphasize the importance of monitoring the food nutrition facts in order to achieve adequate nutrients intake.

scholarly journals Extractable calcium, magnesium, potassium and sodium in diefferent peat types

1957 ◽  
Vol 29 (1) ◽  
pp. 41-55
Author(s):  
Jaakko Kivekäs ◽  
Armi Kaila
Keyword(s):  
Calcium Content ◽  
Nutrient Content ◽  
Magnesium Content ◽  
Individual Values ◽  
Land Quality ◽  
Surface Samples ◽  
Calcium Magnesium ◽  
Calcium And Magnesium ◽  
The Individual ◽  
Weak Tendency

An attempt was made to elucidate the content of plant-available calcium, potassium and magnesium in different kinds of virgin peat. The amounts of these cations extracted by 1 N ammonium chloride solution were supposed to give an estimate satisfactory for this purpose. Also the extractable sodium was determined. The material consisted of 208 samples mainly collected from Northern Finland. The variation in the content of extractable cations was high in all the peat groups. The individual values of one group were overlapping the range of other ones. The average calcium and magnesium contents of the Sp, CSp and SCp groups were somewhat lower than those of Cp, BCp and EuSCp groups. The same seems to be the case, with the content of extractable sodium whereas the moss peats tended to be slightly less poor in potassium than the peats of better quality. A more or less significant correlation existed in all the peat groups between the calcium content and the pH-values. The correlation was markedly lower for pH and extractable magnesium. A weak tendency to negative correlation could be noticed between pH and extractable potassium. The land quality and the calcium and magnesium content of all the surface samples were correlated with each other, although not very strongly. Within the different peat groups no correlation between these quantities could be found, except in one case. The scant supply of potassium in the surface samples did not show any connection with the land quality. The reasons responsible to the large variation of the nutrient content within a certain peat group were discussed. The fact was emphasized that on the basis of the identification of the kind of peat nothing reliable is known of the nutrient content of the sample.

SERUM BIOCHEMICAL CHANGES IN KETOTIC BUFFALOES ( BUBALUS BUBALIS)

2016 ◽  
Vol 12 (1) ◽  
Author(s):  
Usha Choudhary ◽  
Meenaxi Sareen ◽  
Anil Moolchandani
Keyword(s):  
Serum Calcium ◽  
Bubalus Bubalis ◽  
Biochemical Changes ◽  
Blood Analysis ◽  
Serum Phosphorus ◽  
Serum Minerals ◽  
Calcium Magnesium ◽  
Serum Biochemical ◽  
Calcium And Magnesium

The present study was carried out to evaluate the variations in serum minerals ( viz. calcium, magnesium and phosphorus) and transaminases in ketotic buffaloes. Results of blood analysis revealed a significant (P<0.05) reduction in serum phosphorus in ketotic buffaloes whereas nonsignificant (P>0.05) difference occur in serum calcium and magnesium in ketotic buffaloes as compared to control. At the same time significant increase in transaminases GPT, GOT and GGT have been observed .

scholarly journals THE CALCIUM AND MAGNESIUM CONTENT OF NORMAL URINE

1916 ◽  
Vol 28 (1) ◽  
pp. 237-240
Author(s):  
C.Ferdinand Nelson ◽  
W.E. Burns
Keyword(s):  
Magnesium Content ◽  
Calcium And Magnesium ◽  
Normal Urine

scholarly journals Alkalinity–silicon ratio as an assessment factor for the efficiency of silicate slags in wetland rice

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Thoppil Sreenivasan Sandhya ◽  
Nagabovanalli Basavarajappa Prakash
Keyword(s):  
Silicon Content ◽  
Chemical Properties ◽  
Magnesium Content ◽  
Wetland Rice ◽  
Agronomic Efficiency ◽  
Economic Production ◽  
Incubation Experiments ◽  
Calcium And Magnesium ◽  
Si Content ◽  
Assessment Factor

AbstractSilicate slags are one of the most widely used silicon (Si) source in agriculture. Even though the agronomic significance of slags has been demonstrated in several crops, only a few attempts were made to evaluate these Si sources based on their chemical composition. The main objective of this study was to characterize different silicate slags based on their chemical properties and to explore the effect of these chemical properties on the yield, and Si uptake in wetland rice, and dissolution of Si into the soil. Slags were characterised for pH, calcium and magnesium content (alkalinity, A), silicon content, 5 day Na2CO3 + NH4NO3 extractable Si content, and alkalinity to Si ratio (A/Si). Greenhouse and incubation experiments were also conducted using different silicate slags and wollastonite applied at the rate of 300 kg Si ha−1. Slags with A/Si < 3 were found to be ideal Si sources for the economic production of wetland rice and found consistent in increasing soil Si content and rice Si uptake. We conclude that the A/Si ratio of slags can be used as an important parameter to assess the agronomic efficiency of silicate slags in wetland rice.

The Nutritive Value of Marine Products: XIII. Mineral Constituents of the Flesh, Skin, Bone and Free Liquor in Canned British Columbia Coho (Blueback) Salmon

1936 ◽  
Vol 2 (5) ◽  
pp. 473-475
Author(s):  
W. A. Riddell
Keyword(s):  
British Columbia ◽  
Nutritive Value ◽  
Calcium Orthophosphate ◽  
Marine Products ◽  
Calcium Magnesium ◽  
Calcium And Magnesium ◽  
Mineral Constituents

Determinations of the Ca, Mg, Na, K, P and Cl content were made and the ratios of calcium, magnesium and phosphorus oxides suggest the presence of calcium and magnesium metaphosphates in the ash of the flesh, calcium metaphosphate in that from the skin and tribasic calcium orthophosphate in that from the bone.

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