Fertilizers. Extraction of water-soluble calcium, magnesium, sodium and sulfur in the form of sulfates

2015 ◽  
1958 ◽  
Vol 38 (2) ◽  
pp. 105-115
Author(s):  
W. A. Ehrlich ◽  
R. E. Smith

The analysis of the principal horizons of 11 halomorphic profiles was undertaken in an attempt to ascertain, chiefly, the kind and quantity of soluble salts and exchangeable cations assumed to be the main causative agents in the formation of solonetzic soils in Manitoba. The results showed that water-soluble sodium was equal to or greater in quantity than water-soluble calcium or water-soluble magnesium; that exchangeable calcium followed closely by exchangeable magnesium dominated the exchange complexes; and that exchangeable sodium in excess of 15 per cent of the exchangeable cations was found only in some horizons of the Solonchak, Solonetz and Solodized-Solonetz soils in the Chesterfield Association.


PLoS ONE ◽  
2019 ◽  
Vol 14 (9) ◽  
pp. e0222104 ◽  
Author(s):  
Rui Wang ◽  
Yanbing Qi ◽  
Juan Wu ◽  
Manoj K. Shukla ◽  
Quan Sun

2016 ◽  
Vol 24 ◽  
pp. 24-28
Author(s):  
S. F. Kozar ◽  
T. A. Yevtushenko ◽  
L. V. Potapenko ◽  
Ye. P. Chmel ◽  
V. P. Horban

In lysimetric experiment with soybean, the effect of complex inoculants based on Bradyrhizobium japonicum and Azospirillum brasilense on the vertical migration of biogenic elements have been studied. When growing without application of mineral fertilizers, bacterization helped to reduce losses of nitrogen, phosphorus, potassium, calcium, magnesium compounds, as well as moisture and water-soluble humus. Also reduction in loss of biogenic elements compounds under the action of inoculants on the background of N30 was found, but bacterization not affect the loss of moisture and humus. It was shown that complex inoculants affect biometric parameters of soybean plants and enhances the productivity of this culture.


Author(s):  
munevver kilic ◽  
Taskin Gürbüz

Aim: The present study compares the effectiveness of four different remineralization agents on the demineralized enamel of permanent human incisors. The purpose of this study is to evaluate the effectiveness of remineralization agents on the initial enamel lesion. Material- Methods: Crowns affected by demineralization were divided into two equal parts. The right halves of the teeth were subjected to no other processes after demineralization for control purposes and were kept in artificial saliva for the duration of the experiment. The left halves of the crowns were remineralized using a 5% NaF-containing fluoride varnish (GC MI Varnish GC Corp, Tokyo, Japan), a casein phosphopeptide and amorphous calcium toothpaste (GC Tooth Mousse, GC Corp, Tokyo, Japan), fluoride, hydroxyapatite, and xylitol, containing a water-soluble remineralization paste (Remin Pro™, Voco, Germany) and calcium, magnesium and phosphate-containing gel (Medical Remineralizing gel (R.O.C.S. Trading GmbH, Munich, Germany). After a 21-day remineralization process, and SEM/EDX analysis was performed, and a One Way Anova was used for statistical analysis. Results: According to EDX analysis, the R.O.C.S. medical remineralizing gel was found to have a lower Ca/P ratio than the other material groups (p =0.04). Remin Pro™, Voco, and the R.O.C.S. were higher than the control group in evaluating the Ca / P ratio (p=0.014), (p=0.025). Conclusions: The R.O.C.S group, treated with fluoride-free xylitol-containing, a remineralization agent, showed the lowest Ca/P ratio. Compared to demineralized halves of the teeth (control groups), Remin Pro™, Voco, and R.O.C.S. medical remineralizing gel may be considered as affecting on initial enamel lesions. Key Words: Remineralizing Agents, EDX, SEM, Enamel,


2013 ◽  
Vol 21 (4) ◽  
pp. 290-298 ◽  
Author(s):  
Ki Cheul Sohn ◽  
Su Jin Kang ◽  
Joo Wan Kim ◽  
Ki Young Kim ◽  
Sae Kwang Ku ◽  
...  

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