scholarly journals Analysis of prehistoric brown earth paleosols under the podzol soils of Exmoor, UK

2020 ◽  
Vol 35 (5) ◽  
pp. 772-799 ◽  
Author(s):  
Christopher Carey ◽  
Hayley White ◽  
Richard Macphail ◽  
Lee Bray ◽  
Rob Scaife ◽  
...  
Keyword(s):  
Podzol Soils

New associations of the class Molinio-Arrhenatheretea in the in Southern Nechernozemie region of Russia

2014 ◽  
pp. 3-12
Author(s):  
A. D. Bulokhov
Keyword(s):  
Loess Plateau ◽  
Plant Communities ◽  
Mineral Nitrogen ◽  
New Associations ◽  
Medicago Lupulina ◽  
Fallow Lands ◽  
Small Sites ◽  
First Time ◽  
Podzol Soils

3 new associations, distributed in the Southern Nechernozemie of Russia, are described for the first time with use of the Braun-Blanquet approach: Poo angustifoliae–Arrhenatheretum elatioris, Festuco pratensis–Leucanthemetum vulgaris, Trifolio ar­ven­si–Rumicetum thyrsiflori. The synecological amplitudes of humidity, acidity and soil richness by mineral nitrogen of the associations are defined. Communities of ass. Poo angustifoliae–Arrhenatheretum elatioris are distributed on the flat slopes of ravines on the dry, subacidic, grey wood loamy soils moderately rich by mineral nitrogen. Communities of ass. Festuco pratensis–Leucanthemetum vulgaris are distributed on fresh, subacidic, rather poor in mineral nitrogen grey and dark grey wood loamy soils on the fallow lands of various age within landscapes of loess plateau; on sod-podzolic loamy, sandy and subsandy soils within landscapes of fluvioglacial loamy and moraine-outwash plains. They can meet occasionally on grey wood loamy soils. Communities of the Potentilla argentea var. are distributed on grey and dark grey wood loamy soils on the fallow lands within landscapes of loess plateau. Communities of the Medicago lupulina var. are distributed on sod-podzolic loamy, sandy and subsandy subacidic, rather poor in mineral nitrogen soils on the fallow lands of various age. They may occur in the small sites on the continental meadows or along highways. Occasionally these plant communities can be found on grey wood loamy soils. Communities of ass. Trifolio arvensi–Rumicetum thyrsiflori are distributed on raised sites on gentle-wavy outwash or moraine-outwash plains on dry and moderately sour, poor by mineral nitrogen easily sandy and sandy podzol soils. For the estimation of a homotoneity of established syntaxa the index of homotoneity of H.Passarge (1979) is used. The ass. Poo angustifoliae–Arrhenatheretum elatioris is characteristic by the high homogenetic variability. Totally, association’s index of homotoneity is high — 0.52. The low index of a homotoneity is characteristic for аss. Festuco pratensis–Leucanthemetum vulgaris — 0.35, for the Potentilla argentea var. — 0.33 and Medicago lupulina var. — 0.44. Following associations have a low index of the homotoneity: аss. Trifolio arvensi–Rumicetum thyrsiflori — 0.33, as in subass. T.a.–R.th. typicum— 0.33, and in subass. T.a.–R.th. helichrysetosum arenarii — 0.44. Such low indexes of a homotoneity are characteristic for semiruderal and serial commu­nities.

A study of clay minerals in Podzol soils in New Brunswick, eastern Canada

Clay Minerals ◽  
1968 ◽  
Vol 7 (3) ◽  
pp. 295-309 ◽  
Author(s):  
H. Kodama ◽  
J. E. Brydon
Keyword(s):  
New Brunswick ◽  
Experimental Evidence ◽  
Clay Minerals ◽  
Infrared Absorption ◽  
Fourier Transforms ◽  
Soil Series ◽  
Eastern Canada ◽  
X Ray ◽  
Dioctahedral Mica ◽  
Podzol Soils

AbstractClays from the Ae and C horizons of five Podzol soil series in New Brunswick were examined by X-ray, chemical and infrared absorption methods. All the experimental evidence indicated that the Ae horizons contained predominantly a dioctahedral randomly interstratified mica-vermiculite-smectite clay, whereas the C horizons contained abundant dioctahedral mica (illite) and trioctahedral chlorite. Since no trace of chlorite as a separate phase or as one component of the interstratified structure was found in the Ae horizons, it was concluded that, while the inherited chlorite was decomposed in all of the Ae horizons, mica was differentially hydrated giving an interstratified structure. Fourier transforms of the three-component interstratified clay revealed different ratios of hydrated layers (vermiculite and smectite) to non-hydrated layers and different stacking sequences. The proportion of hydrated layers and randomness of stacking was related to the degree of weathering as measured by the accumulation of TiO2 in the Ae horizon and it was suggested that they may be related to the degree of podzolization.

A THERMOGRAVIMETRIC STUDY OF ORGANIC MATTER OF REPRESENTATIVE CANADIAN PODZOL SOILS

1964 ◽  
Vol 44 (1) ◽  
pp. 7-13 ◽  
Author(s):  
M. Schnitzer ◽  
R. C. Turner ◽  
I. Hoffman
Keyword(s):  
Organic Matter ◽  
High Temperature ◽  
Low Temperature ◽  
Morphological Characteristics ◽  
Inorganic Materials ◽  
Pronounced Effect ◽  
Thermogravimetric Study ◽  
Surface Materials ◽  
Organic Matter Addition ◽  
Podzol Soils

Differential thermogravimetric (DTG) curves of untreated peat, muck, and 10 different Podzol L–H materials showed peaks at approximately 100 °C (moisture), 280° (low-temperature band), and 370 to 390 °C (high-temperature band). The maxima at 280 °C were sharp and characteristic of all surface materials investigated. The DTG curves were essentially the same for all of the Podzol L–H materials investigated.The DTG curves for 12 organic matter preparations extracted from Podzol Bh, Bfh, Bhf, Bfl, and Btf horizons showed maxima at 100 °C and in the 420 to 520 °C region (high-temperature band). The peaks at 280 °C were virtually absent in these materials. This suggested differences in composition between L–H and B horizon organic matter of the Podzols studied. The variations in the positions of the high-temperature bands of the B materials were related to the morphological characteristics of these soils in the field. From this it appeared that thermogravimetry might be a useful aid in soil classification.Addition of inorganic materials did not affect the position of the low-temperature bands but had a pronounced effect on the high-temperature bands of both L–H and B organic matter. Addition of Na caused the peaks of the latter to shift to higher temperatures while addition of Al and Fe caused shifts to lower temperatures.

scholarly journals Genesis and evolution of sod-podzol soils with underling compact carbonates

2012 ◽  
Vol 2 (40) ◽  
pp. 139-143
Author(s):  
M. Saliuk
Keyword(s):  
Key Words ◽  
Genetic Nature ◽  
Podzol Soils

Modern researches of genetic nature of sod-podzol soils with underling carbonates are considered in the article. They are erected to evolutional row from rendzina to sod-podzol soils and forming soils on the layer of water-glacial with were put on carbonates rocks. Key words: genesis, evolution, sod-podzol, soils, carbonic rocks.

scholarly journals ФОРМУВАННЯ ВРОЖАЮ ТА ЯКОСТІ ЗЕРНА ТРИТИКАЛЕ ОЗИМОГО ЗАЛЕЖНО ВІД УДОБРЕННЯ В УМОВАХ ЗАХІДНОГО ПОЛІССЯ

2012 ◽  
pp. 38-41
Author(s):  
А. П. Білітюк ◽  
Н. В. Новицька ◽  
В. П. Максимюк
Keyword(s):  
Grain Yield ◽  
Optimal Dose ◽  
The West ◽  
High Quality ◽  
Winter Triticale ◽  
Podzol Soils

Наведені результати досліджень норм, строків івидів мінеральних добрив у технології вирощуваннятритикале озимого на дерново-підзолистому су-піщаному ґрунті західного Полісся України післяпопередника – гороху. Встановлено, що оптималь-ною нормою мінеральних добрив для формуваннявисокоякісного зерна тритикале озимого сортуПоліський 7 є N120Р60К120, із внесенням N30 до сівби+ N30 на ІІІ + N30 на V + N30 на VІІ етапах органо-генезу в формі карбаміду і КАС. На цьому агрофоніврожайність зерна становила 5,98–5,88 т/га ізвмістом 14,1–14,2 % білка и 21,1 % клейковинивідповідно. Мінеральні добрива забезпечували ви-соку польову схожість і продуктивну кущистістьрослин, збільшували показники вмісту в зерні кро-хмалю, золи, фосфору і калію, збільшували пара-метри висоти стебла та колоса прапорцевоголиста, кількість колосків у колосі, зерен у ньому. The results of investigations of doses, terms and types of mineralfertilizers in the growing technology of winter triticale onsod-podzol soils of the West Polesye of Ukraine after peas aspredecessor is determined. Established that the optimal dose offertilizer for the formation of high-quality grain varieties ofwinter triticale Polesskii 7 is N120Р60К120, with application ofN30 + N30 before sowing and + N30 III V + N30 VII stages oforganogenesis in the form of urea and CAS. At this agriculturalbackground grain yield obtained 59,8–58,8 kg / ha with a proteincontent 14,1–14,2% and 21,1% gluten, respectively.

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