THE GROWTH OF, CLOVERS AT DIFFERENT LEVELS OF SOIL ACIDITY

1949 ◽  
pp. 233-240
Author(s):  
A.J. Mcneur
Keyword(s):  
Soil Acidity ◽  
Acid Soils ◽  
Industrial Research ◽  
Popular Belief ◽  
The Past ◽  
Different Levels

The popular belief among many is that clovers will not grow in acid soils, and for this reason large quantities of lime are often used to make soil less acid in an attempt to increase clover growth. At the Grasslands Division of the Department of Scientific and Industrial, Research at Palmerston North there have been a number of .experiments over the past few years which serve to raise doubts about the truth of some statements normally accepted as axiomatic as far as clover growth and soil acidity are concerned. Our experiments have been conducted in a number of ways, and some of these will be dealt with in detail.

Evolution of soil acidity during the past 36 years (1960-1996) under coniferous forest in a region of high livestock production in Flanders

1997 ◽  
Vol 62 ◽  
Author(s):  
A. De Schrijver ◽  
L. Nachtergale ◽  
L. De Temmerman ◽  
J. M.F. Frechilla ◽  
S. Mussche ◽  
...  
Keyword(s):  
Soil Acidity ◽  
Coniferous Forest ◽  
Livestock Production ◽  
The Past

-

EFFECTS OF SOIL ACIDITY ON RHIZOBIA NUMBERS, NODULATION AND NITROGEN FIXATION BY ALFALFA AND RED CLOVER

1977 ◽  
Vol 57 (2) ◽  
pp. 197-203 ◽  
Author(s):  
W. A. RICE ◽  
D. C. PENNEY ◽  
M. NYBORG
Keyword(s):  
Nitrogen Fixation ◽  
Soil Ph ◽  
Soil Acidity ◽  
Field Experiments ◽  
Rhizobium Meliloti ◽  
Acid Soils ◽  
Red Clover ◽  
Ion Concentration ◽  
Hydrogen Ion Concentration ◽  
Greenhouse Experiments

The effects of soil acidity on nitrogen fixation by alfalfa (Medicago sativa L.) and red clover (Trifolium pratense L.) were investigated in field experiments at 28 locations, and in greenhouse experiments using soils from these locations. The pH of the soils (limed and unlimed) varied from 4.5 to 7.2. Rhizobia populations in the soil, nodulation, and relative forage yields (yield without N/yield with N) were measured in both the field and greenhouse experiments. Rhizobium meliloti numbers, nodulation scores, and relative yields of alfalfa decreased sharply as the pH of the soils decreased below 6.0. For soils with pH 6.0 or greater, there was very little effect of pH on any of the above factors for alfalfa. Soil pH in the range studied had no effect on nodulation scores and relative yields of red clover. However, R. trifolii numbers were reduced when the pH of the soil was less than 4.9. These results demonstrate that hydrogen ion concentration is an important factor limiting alfalfa growth on acid soils of Alberta and northeastern British Columbia, but it is less important for red clover. This supports the continued use of measurements of soil pH, as well as plant-available Al and Mn for predicting crop response to lime.

AN ASSESSMENT OF THE SOIL ACIDITY PROBLEM IN ALBERTA AND NORTHEASTERN BRITISH COLUMBIA

1977 ◽  
Vol 57 (2) ◽  
pp. 157-164 ◽  
Author(s):  
D. C. PENNEY ◽  
M. NYBORG ◽  
P. B. HOYT ◽  
W. A. RICE ◽  
B. SIEMENS ◽  
...  
Keyword(s):  
British Columbia ◽  
Soil Ph ◽  
Soil Acidity ◽  
Field Experiments ◽  
Trifolium Pratense ◽  
Acid Soil ◽  
Acid Soils ◽  
Red Clover ◽  
Hordeum Vulgare L ◽  
Crop Species

The amount of cultivated acid soil in Alberta and northeastern British Columbia was estimated from pH values of farm samples analyzed by the Alberta Soil Testing Laboratory, and the effect of soil acidity on crops was assessed from field experiments on 28 typical acid soils. The field experiments consisted of two cultivars of barley (Hordeum vulgare L.) and one cultivar each of rapeseed (Brassica campestris L.), red clover (Trifolium pratense L.) and alfalfa (Medicago sativa L.) grown with and without lime for 2 yr. There are about 30,000 ha of soils with a pH of 5.0 or less where soil acidity seriously restricts yields of all four crop species. There are approximately 300,000 ha with a soil pH of 5.1–5.5 where liming will on the average increase yields of alfalfa by 100%, yields of barley by 10–15%, and yields of rapeseed and red clover by 5–10%. There are a further 1,600,000 ha where soil pH ranges from 5.6 to 6.0 and liming will increase yields of alfalfa by approximately 50% and yields of barley, rapeseed and red clover by at least 4–5%.

The Birth of the National Historical Writing in England and France

2021 ◽  
Author(s):  
Anastasia Palamarchuk ◽  
◽  
Ekaterina Terenteva ◽  
Sergey Fyodorov ◽  
Keyword(s):  
Early Modern ◽  
Western Europe ◽  
Complex Analysis ◽  
Legal Consciousness ◽  
Historical Writing ◽  
The Past ◽  
Historical Past ◽  
Different Levels ◽  
Prevalent Form ◽  
Xviith Century

The monograph is a study of main trends of emergence and evolution of the national historical writing in Western Europe in the XVIIth century. Based on a complex analysis of several phenomena which defined the development of the Early Modern historical writing, it provides a comparative analysis of the regional schools of historical writing (particularly those of the English antiquaries and French érudits) in the process of their respective growth and formation accomplished by the end of XVIIth century with the advent of the national historiography. The conceptual unity of the book is verified within the context of the rise of the national states in England and France, which stipulated a consistent demand for reinforcing the nationally orientated discourses not only in a historical writing but also in legal and political thought. The perception of England as an empire, entrenched in the insular historical and legal consciousness, recurring during the reigns of the Stuarts and extending to the whole British archipelago, determined the establishment of chorography as a prevalent form characteristic of the English historiography. Chorographic structure of the narrative unfolding the space of the territorial “empire” to the reader corresponded to the method of “intellectual appropriation” of the British Isles by the English antiquarians which could be defined as “cultural-historical”. A considerable role was devoted to reactualization of ethnogenetic myths at different levels: while some of them (primarily – the Galfridian myth) were regarded as relevant to the pan-British cultural and historical past, others emphasized autonomous dimensions of the past and present of distinct composites (Scotland, Ireland, Wales) The continental French variant of proto-national historiography also utilized the idea of empire but in a different mode defined by the formula “rex in regno suo imperator est”. The emerging school of érudits modelled principles of its narratives on patrimonial structures rooted in the feudal medieval society (dynasty; royal family; aristocratic lineages; seigneurial rights and vassal obligations; the system of offices created by the monarch stemming from the royal household etc.). The unity of the subjects of the French kingdom was ensured not by the shared territorial commonality but by their loyalty to the king. Therefore, the French variant of “intellectual appropriation” was developed in a socio-political direction in contrast to the territorial.

Verification of Plastic Interactive Systems

i-com ◽  
2015 ◽  
Vol 14 (3) ◽  
Author(s):  
Raquel Oliveira ◽  
Sophie Dupuy-Chessa ◽  
Gaëlle Calvary
Keyword(s):  
Power Plant ◽  
User Interfaces ◽  
Nuclear Power ◽  
Interactive Systems ◽  
System Model ◽  
Equivalence Checking ◽  
The Past ◽  
Different Levels ◽  
Formal Techniques

AbstractInteractive systems have largely evolved over the past years. Nowadays, different users can interact with systems on different devices and in different environments. The user interfaces (UIs) are expected to cope with such variety. Plastic UIs have the capacity to adapt to changes in their context of use while preserving usability. Such capability enhances UIs, however, it adds complexity on them. We propose an approach to verifying interactive systems considering this adaptation capability of the UIs. The approach applies two formal techniques: model checking, to the verification of properties over the system model, and equivalence checking, to compare different versions of a UI, thereby identifying different levels of UI equivalence. We apply the approach to a case study in the nuclear power plant domain in which several UI are analyzed, properties are verified, and the level of equivalence between them is demonstrated.

scholarly journals The Role of Heritage and Authenticity in the Value Creation of Fashion Brand

2016 ◽  
Vol 9 (7) ◽  
pp. 135 ◽  
Author(s):  
Andrea Boccardi ◽  
Cristiano Ciappei ◽  
Lamberto Zollo ◽  
Maria Carmen Laudano
Keyword(s):  
Marketing Research ◽  
Fashion Industry ◽  
Consumer Experience ◽  
Brand Authenticity ◽  
The Past ◽  
Fashion Brand ◽  
Managerial Implications ◽  
Different Levels ◽  
Brand Heritage

<p>This paper builds on traditional and recent marketing research concerning the constituents of brand authenticity, particularly investigating consumers’ experience in the context of fashion industry. Specifically, we attempt to unpack the dimensions underlying the concept of brand authenticity by, first, correlating the role of heritage and ‘mythopoesis’ – the creation of a myth through repetitive narrative –  and, second, by applying our proposed theoretical framework to four Italian luxury fashion brands, namely Gucci, Salvatore Ferragamo, Lous Vuitton, and Stefano Ricci. Thanks to the positioning of such fashion brands according to different levels of heritage and authenticity, it emerges how mythopoesis allow brand marketers to transfer brand heritage from past to both present and future. In this way, the risk of brand fixation in the celebration of the past may be overcome. Managerial implications are finally discussed, showing how marketers may foster or hinder brand authenticity, and how such an aspect affects consumer experience and attitude toward the brand.</p>

scholarly journals The Historiolae in Belarusian Incantations

2021 ◽  
Vol 9 ◽  
pp. 80-112
Author(s):  
Tatsiana Valodzina ◽  
Keyword(s):  
Human Life ◽  
Present Moment ◽  
The Real ◽  
The Past ◽  
Ancient Times ◽  
Passion Of Christ ◽  
Different Levels ◽  
Specific Comparison ◽  
Christian History

The article deals with one of the most popular techniques in Belarusian magical medicine — the so-called historiolae, the essence of which is to recall precedent situations. This implies that the “disequilibrium of being, which has arisen in human life at the present moment (e.g. a disease), is restored according to a sacred pattern that took place in the past”. The texts declare connections between different levels of the worlds, past and present, but to the same extent between the microcosm and the macrocosm, erasing all distinctions between the real and the supernatural worlds. The present time of these charms prevents the transfer of the patient and the healer to ancient times of the myths. Instead, it is the sacred world that spreads around the requester. The most common form of such charms includes a narrative that relates certain events in Christian history, primarily describing the life of Christ or of one of the saints. A particular place among the narrative manifestations of historiolae is occupied by references to the Passion of Christ. These narratives, in turn, possess powerful life-affirming and healing potential. It is not the logical correspondence of a specific comparison in an incantation that is central, but the very desire to place the situation of treatment in an appropriate context. A number of texts from the author’s field records and archival materials are introduced here into scholarly circulation.

Soil properties in relation to the occurrence of grass sickness in horses

1941 ◽  
Vol 31 (3) ◽  
pp. 308-319 ◽  
Author(s):  
A. B. Stewart
Keyword(s):  
Soil Acidity ◽  
Acid Soils ◽  
Limited Range ◽  
Point Of View ◽  
Grass Sickness ◽  
Geological Origin ◽  
The Common ◽  
Common Plant ◽  
Range Of Values ◽  
Pasture Plants

Any conclusions drawn from the foregoing results will of course apply only to the necessarily limited range of soils in one county. This range is limited geologically and the Aberdeenshire soils belong largely to the class of light to medium acid soils of low base status. The results for these soils indicate that:(a) The occurrence of grass sickness is not confined to soils of any particular geological origin.(b) The range of textural conditions in the soils examined is a wide one covering loams, sands and peaty types with a few moderately heavy soils. There does not appear to be any relationship between soil texture and the incidence of grass sickness.(c) The soils examined all fall into the class of acid soils and in only a very few—about 5 to 10%—could the addition of lime be considered unnecessary from the general agricultural point of view. As against this there are no striking abnormalities in the ratios of exchangeable or readily soluble cations in the soils, which might serve as a clue to the occurrence of grass sickness. Although little is known of the actual magnesium, manganese and strontium requirements of hay and pasture plants, the range of values covered in the soils examined is sufficiently wide to make it very unlikely that there is any relationship between the incidence of grass sickness and the magnesium, manganese or strontium contents of the soil. In view of the relatively widespread acidity in the soils examined, the possibility of a relationship between the occurrence of grass sickness and soil acidity has to be borne in mind. It would be of value to find out if grass sickness occurs to an appreciable extent on limestone soils, or on soils which have been systematically limed and which have pK values in the neighbourhood of 7.(d) The majority of the soils are, from the general agricultural point of view, somewhat low in readily soluble or available potash and phosphate, but against this about 30% of the soils have satisfactory phosphate contents and about 20% of the ordinary surface soils and 46% of the top 2 in. samples, in which occur the bulk of the plant roots, have satisfactory potash contents. It does not appear likely therefore that the occurrence of grass sickness is to be related directly to the phosphate and potash contents of the soil. As far as reserves of the common plant foods are concerned there is likewise no abnormality which could account for the disease.

History & Constitution

2016 ◽  
Author(s):  
Luigi Lacchè
Keyword(s):  
Common Core ◽  
Public Law ◽  
Global Perspective ◽  
Alexis De Tocqueville ◽  
History Taking ◽  
Constitutional History ◽  
The Past ◽  
Global Constitutionalism ◽  
History Of ◽  
Different Levels

This volume gathers together 25 essays dedicated to the history of four important constitutional experiments (France, Belgium, Switzerland and Italy). While it considers these experiments and developments in the 19th and 20th centuries, comparative constitutional history, nevertheless, offers the possibility of obtaining a wider purview. It is in this sense that we can speak of the myth of the English constitution pervading the discourses and language of the French liberals, of Belgium being referred to as “Little England” in Italy, and the Modell Deutschland as increasingly becoming an object of fascination for Italian scholars of public law. In the 1830s Alexis de Tocqueville analysed the situation in Switzerland and compared the different kinds of federalism present in America and in Europe. A European comparative constitutional history, taking up a global perspective, can help us to better decipher two very important issues pertinent to our times: first, for assessing the identity and the constitutional substance of a living common core of the European constitutional traditions; and second, for considering constitutional history as a useful tool to address different levels of global constitutionalism and new trends of governance. History & Constitution offers not only insights into the past, but also provides some guidelines for the future.

Sign in / Sign up

Export Citation Format

Share Document