Ecological intercomponent relationships in the natural solonetzic soil complex of the Northern Sarpinskaya Plain (Kalmykia Republic)

2017 ◽  
Vol 7 (4) ◽  
pp. 224-233 ◽  
Author(s):  
N. M. Novikova ◽  
M. V. Konyushkova ◽  
S. S. Ulanova
Keyword(s):  
1962 ◽  
Vol 42 (1) ◽  
pp. 17-22 ◽  
Author(s):  
R. R. Cairns

Field study of some of the moisture conditions in a Duagh-Malmo Solonetzic soil complex revealed that the depth of soil drying was closely related to the degree of solodization. Data pertaining to the wilting point and field capacity of the soil did not reveal any reason for the differences in the field productivity and water distribution for these soils. Barley seedlings grown on surface samples of the Solonetz member exhibited a nutritional disorder. The addition of sodium sulphate, the predominant readily soluble salt in the lime-salt horizon of this soil, overcame the nutritional disorder, reduced water uptake, and increased productivity. The addition of up to 20 milliequivalents of sodium per 100 grams of soil did not create a wilting condition, even when the moisture level was allowed to fall to the measured wilting point. It is suggested that a nutritional problem may have a significant bearing on water utilization by plants grown on these soils.


1961 ◽  
Vol 41 (2) ◽  
pp. 188-195
Author(s):  
K. K. Krogman ◽  
R. A. Milne

Soil samples were taken from the surface 6 inches, the 6- to 12-inch depth, and thereafter by 1 foot increments down to the 15-foot depth in Hemaruka (Brown Solodized-solonetz) and Halladay (Brown Solod) soils that had been used in an irrigated plot study. Analyses of the samples showed that the Hemaruka soil is a saline-alkali soil, the undesirable characteristics of which were aggravated by 6 years of irrigation. Yields of wheat, oats, and barley obtained in the plot study indicated the inferior productivity of the Hemaruka soil as compared with the Halladay soil. The Halladay soil is non-saline and non-alkali within the solum but has a dense saline-alkali subsoil similar to that of the Hemaruka soil. Inadequate internal drainage, as indicated by low disturbed hydraulic conductivity values, would make this soil complex unsuitable for irrigation.


1968 ◽  
Vol 48 (2) ◽  
pp. 143-150
Author(s):  
K. K. Krogman ◽  
R. A. Milne

The pH, electrical conductivity, sodium-adsorption ratio, saturation percent, hydraulic conductivity, NO3 content, and NaHCO3-extractable phosphorus were determined on an irrigated Solonetzic soil complex. The soils were sampled to the 142-cm depth at 20 locations on a small, levelled field. Yields of barley were obtained in the field and in the greenhouse on soil cores. Stepwise multiple regression analyses indicated that hydraulic conductivity and available phosphorus in the 0- to 15-cm depth were the most important factors explaining yield variation in the field. In the greenhouse, available phosphorus was more important and hydraulic conductivity was of secondary and minor importance.


Author(s):  
N. Palamarchuk

Under review is the micromorphological conclusion of korshiv fossil soil complex of the Ternopil’ support slit. Interpretation of natural conditions of forming of the korshiv fossil soil complex is also considered. Key words: micromorphological conclusion, fossil soil, loess, middle pleistocene, support slit, shlif.


1960 ◽  
Vol 11 (1) ◽  
pp. 99-106
Author(s):  
Hugo Gross

Abstract. The drumlin section recently discovered near Hörmating in the Upper Bavarian area of the Würm Glaciation and evaluated with regard to stratigraphy, paleoclimatology, and chronology by E. Ebers (in this annual) can closely be correlated with the typical loess section of eastern Lower Austria, particularly with its Fellabrunn (Göttweig) fossil soil complex as described and interpreted by F. Brandtner. The Göttweig loamificaton developed during the Hörmating Interstadial from c. 47000 (or 48000) until the close marked by a thin peat layer 45300±1000 C-14 years old. As some findings are suggestive of at least one cold oscillation, the term „Göttweig Interstadial Complex" appears to be correcter. This period interrupted the glacial climate of the Würm Glaciation from c. 47000 (or 48000) until c. 30000 B. P. The northern alpine Piedmont Glaciation was initiated by an advance-gravel later on weathered on the surface probably during the Paudorf Interstadial and advanced entirely (or almost entirely) during the Main Würm Stage from the (Swiss) Aare to the Salzach rivers, after several Lower Würm gravel masses had poured out of the Alps valleys during the Early Würm Stage. This Lower Würm gravel was capped by a weathered (decalcified) stratum 2-3 metres in thickness and can contain up to three interstadial Schieferkohle (Pleistocene lignite) beds intercalated, the lowermost overlying a Schieferkohle stratum deposited during the Riss-Würm Interglacial at some sites.


Sign in / Sign up

Export Citation Format

Share Document