DOCSLIB.ORG

Potash and Its Function in Agriculture

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Potash and Its Function in Agriculture POTASH AND ITS FUNCTION IN AGRICULTURE. By H. W. WILEY, Chief of the Division of Chemistry, U. S. Department of Agriculture. ORIGIN OF POTASH. The potash naturally present in a soil, in common with its other mineral constituents, is the residue of the decomposition of the min- erals which composed the original rocks. The common salts of pot- ash, viz, phosphate, chloride, sulphate, etc., are soluble in water, and where disintegrated rocks are subjected to leaching these salts are in a great measure removed. In the original rocks the potash is chiefly held in the structure of silicates, more or less complex, and wholly insoluble in water. In the débris of these rocks, as found in the soil, it is evident that the potash must still be held in the insoluble state, but, nevertheless, so thoroughly decomposed as to be yielded grad- ually to the demands of the growing plant. LOSS OF POTASH DURING W^EATHERING. During the progress of decomposition a portion of the potash passes into the soluble state and is removed by the leaching produced by heavy rains. This fact is conclusively shown by the chemical analysis of fresh and decomposed rocks of the same structure and occurring in the same locality. For instance, in the analysis of a fresh and decomposed rock (diabase) near Medford, Mass., it was found by Mr. G. P. Merrill that the undecomposed sample contained 2.16 per cent of potash, and the disintegrated portion 1.75 per cent. From these data it is seen that by leaching during and after weathering the diabase lost 19 per cent of its potash. In comparing the soil, partially disintegrated rock and undecom- posed granite, from which the fresh and decomposed rocks were de- rived, near Rock Creek, in the District of Columbia, almost the same relative loss was found, the percentages of potash in the rock, decom- posed rock, and soil being, respectively, as follows: 2.71, 2.11, and 2.10, showing a loss in passing from the fresh rock to the complete soil of 23.5 per cent. From these data it is safe to conclude that in virgin soils, formed in situ and free from erosion, from 70 to 80 per cent of the potash pres- ent in the original rocks will still be found. It would evidently be useless to seek for any constant relation between the potash in sedi- mentary soils and that in the rocks from which they were originally 107 108 YEARBOOK OF THE U. S. DEPARTMENT OF AGRICULTURE. formed. In these soils is found a mixture of sediments of very dif- ferent origins and of different degrees of fineness, the finest particles being evidently carried to the greatest distance, or being last depos- ited. In the finer particles of such a soil there is naturally a great disturbance of relations, and the potash itself is distributed among such particles in proportion to its solubility and the specific gravity of the intact rock fragments containing it. PERCENTAGE OF POTASH IN FELDSPARS. The mineral constituents of rocks which afford the largest quan- tities of potash to the soil are the potash feldspars. The rocks containing this mineral are widely distributed. Feldspar itself is essentially a silicate of alumina associated with the silicates of potas- sium, sodium, or calcium. Magnesia and iron are either absent or occur in very small quantities. The predominating alkali is either potash or soda, although where potash predominates there is nearly always some soda, and where soda predominates a small quantity of potassium is found. The amount of potash in feldspars varies widely; it is in general from 5 to 15 per cent. In a variety of feld- spar found at French Creek mines, Warwick, Pa., 15.99 per cent of potash has been found; at Magnet Cove, Hot Springs, Ark., 15.60 per cent; at Leverett, Mass., 12.20 per cent. Feldspars of this kind have as much potash as the fertilizing material known as kainite, described further on. It is evident that if such feldspars were readily decomposable, yielding the potash in a form soluble in water or easily dissolved by the vital activity of the rootlets, they would be quite as valuable for fertilizing purposes as the kainite of commerce. In point of fact, however, these feldspars, as a rule, disintegrate slowly, and it is probable that there would be no immediate effect produced by applying them, even in a finely ground state, to the soil. Sooner or later, however, the process of disintegration would be sufficiently advanced to render the potash assimilable, little by little, by the grow- ing crops. Feldspars may be altered or disintegrated by infiltrating waters carrying more or less carbon dioxide in solution, and also by the action of waters rendered acid by the decomposition of sulphides, or a min- eral containing the protoxide of iron is often the first occasion of the change. When the infiltrated waters contain carbon dioxide, the feldspar first loses its lime, by a combination of the lime with this acid, and next a portion of its potash is carried off as carbonates. The residue, being chiefly silicate of alumina, becomes a kind of kaoline. The carbonate of soda or potash or the silicate of those bases may be used in the formation of other minerals, while the alkali goes to supply the saline ingredients of fresh and marine waters. The decomposition of feldspathic rocks near the surface of the earth evidently proceeds in such a way as to distribute extremely fine POTASH AND ITS FUNCTION IN AGRICULTURE. 109 particles of the partially undecomposed minerals throughout the soil. These mineral particles contain the residual potash of the original mineral in a form which may be slowly used for agricultural purposes. In localities subjected to heavy rains the water-soluble form of the potash resulting from weathering is not found except in very limited quantities, but, as indicated in the analyses cited, the quantity of the potash lost by this solvent action does not in many instances exceed 20 or 25 per cent of the total quantity present in the original rock. DISTRIBUTION OF THE POTASH IN THE SOIL. When a soil is separated by water into groups of particles of approximately the same size, the potash is unequally distributed among them. In one instance it has been shown that a soil contain- ing 0.63 per cent of potash afforded sediments in which the potash was distributed as follows: In the clay (21.64 per cent of the whole) 1.47 per cent; in silt less than a quarter of a millimeter in diameter (23.56 per cent of the whole) 0.53 per cent; in silt half a millimeter in diam- eter (13.67 per cent of the whole) 0.12 per cent. The total potash in all the sediments amounted to 0.49 per cent of the weight of the soil, showing a loss of 0.15 per cent, which is ascribed to the solvent action of the water used in effecting the separation. RELATIVE SOLUBILITY OF PARTICLES OF DIFFERENT DEGREES OF FINENESS. The solubility of soil particles of different degrees of fineness in an acid, such as hot hydrochloric, is, as a rule, inversely proportional to their size. The clay, therefore, possesses the highest degree of solu- bility, and the coarser particles in the order of their size are less sol- uble. Thus, while a soil may lose a portion of its potash in passing from a state of larger to one of smaller aggregates, the residual potash becomes more readily soluble, and therefore more easily assimilated by the plant. In the coarser particles of the soil are retained those mineral constituents of plant food which, in the course of years, become gradually available. Nature thus conserves the potash, as well as other mineral foods, in a most careful manner, giving up only limited portions each year. RELATION OF POTASH TO OTHER MINERAL INGREDIENTS IN SILTS OF DIFFERENT MAGNITUDE. As a result of the studies of the composition of the silts, the follow- ing conclusions may be drawn: 1. The iron and alumina exist in almost identical relative propor- tions in each sediment, making it probable that they are in some way definitely correlated. 2. Potash and magnesia also exist in almost the same quantities. lio YEARBOOK OF THE U. S. DEPARTMENT OF AGRICULTURE. and their ratio to each other in all the sediments being almost constant seems to indicate that they occur combined, perhaps in some zeolitic silicate which may be a source of supply to plants. 3. Manganese exists only in the clay, a mere trace being found in the next sediment. 4. The lime appears to have disappeared in the clay, having prob- ably been largely dissolved in the form of carbonate by the large quantity of water used in elutriation. Its increase in the coarser portions may be owing to its existence in a crystallized form not so readily soluble. 5. In a summary of the ingredients, it is seen that there is a loss in potash, magnesia, and lime in the sediments as compared with the original soil, and this loss is doubtless partly due to the solution of these bodies in the water of elutriation. A noteworthy fact is the rapid decrease of acid-soluble matter in the coarser sediments. DISTRIBUTION OF POTASH IN THE SOIL AND SUBSOIL.. A study of the distribution of the potash in the soil and subsoil may be undertaken from two points of view. In the first place, the total quantity present in each may be determined.
Load more

Recommended publications
  • Potash Case Study
    Mining, Minerals and Sustainable Development February 2002 No. 65 Potash Case Study Information supplied by the International Fertilizer Industry Association This report was commissioned by the MMSD project of IIED. It remains the sole Copyright © 2002 IIED and WBCSD. All rights reserved responsibility of the author(s) and does not necessarily reflect the views of the Mining, Minerals and MMSD project, Assurance Group or Sponsors Group, or those of IIED or WBCSD. Sustainable Development is a project of the International Institute for Environment and Development (IIED). The project was made possible by the support of the World Business Council for Sustainable Development (WBCSD). IIED is a company limited by guarantee and incorporated in England. Reg No. 2188452. VAT Reg. No. GB 440 4948 50. Registered Charity No. 800066 1 Introduction 2 2 Global Resources and Potash Production 3 3 The use of potassium in fertilizer 4 3.1 Potassium Fertilizer Consumption 4 3.2 Potassium fertilization issues 6 Appendix A 8 1 Introduction Potash and Potassium Potassium (K) is essential for plant and animal life wherein it has many vital nutritional roles. In plants, potassium and nitrogen are the two elements required in greatest amounts, while in animals and humans potassium is the third most abundant element, after calcium and phosphorus. Without sufficient plant and animal intake of potassium, life as we know it would cease. Human and other animals atop the food chain depend upon plants for much of their nutritional needs. Many soils lack sufficient quantities of available potassium for satisfactory yield and quality of crops. For this reason available soil potassium levels are commonly supplemented by potash fertilization to improve the potassium nutrition of plants, particularly for sustaining production of high yielding crop species and varieties in modern agricultural systems.
    [Show full text]
  • MORDANTING NATURAL DYES IRON SULPHATE (Ferrous Sulphate) Is Usually Used to Change the Colour of a Dye
    MORDANTING NATURAL DYES IRON SULPHATE (Ferrous Sulphate) is usually used to change the colour of a dye. It also makes natural dyes Most natural dyes have great affinity for fibre but more light and wash fast. More often used with cellulose poor light and wash fastness. If the fibre is pre than protein as it can make protein fibres brittle and harsh. mordanted you create a bond between the dye Iron changes shades to deeper, darker shades and is better and the fibre which will improve this dramatically. used in a premordant bath than directly into the dyebath. The most common and least environmentally toxic Use at a maximum of 2 to 4 % WOF . are Alum, Iron and Tannin. Copper is a useful mordant but is toxic to marine COPPER (Copper Sulphate)tends dull colours and turn life and humans. It needs to be handled and them blue green ie. yellows become greens, pinks become disposed of carefully. Historically Tin and Chrome purple. You can use Copper as a premordant or as an after have been used but are hazardous to the treatment to adjust colours. Colours dyed with Copper are environment & your health and need to be usually more lightfast than those dyed with Alum. Copper disposed of with great care. For that reason we has a less harsh effect on Protein fibres than Iron. Dispose recommend only using Alum, Iron, Copper and of Copper solution responsibly by exhausting your Tannin. Copper is probably the least safe but will dyebaths, diluting the residue with clean water and don’t give you much brighter shades and is safe to use put it down the storm water.
    [Show full text]
  • The Art of Mordanting and Staining and the Complete Treatment of Wood
    The Artof/Aordanting and Staining ' N:i^\><v 5W^ \\ \ ^^^ Class. X ) 3^^ Book -A fe Copyright }1® - COPYRIGHT DEPOSIT. C^z-A-^^UX-ftUv^w*^ %««<«^vvwn''v<^t'^"t^'>vva-'VU'nH^ , THE ART OF M ORD A NTI NG AND STAINING AND THE COMPLETE TREATMENT OF WOOD SURFACES A HANDBOOK AND AID FOR ARCHITECTS, CABINET MAKERS, DECORATORS, PAINTERS, PIANO FACTORIES AND TRADE SCHOOLS BY WILLIAM ZIMMERMANN INSTRUCTOR OF CHKMISTRY IN POLYTECHNIC INSTITUTE, BARMEN, GERMANY BOSTON, MASS.: THE ARTI-STAIN CO. 1911 \J> First English Edition Copyright 191 i BY W. F. PURSCHER All Rights Reserved ^ r/> ARTI-STAIN CO. Sole Agents for U. S. A. and the Dominion of Canada / !)CI.A28t)433 PREFACE Since the appearance of the Fifth Edition of this work in 1908, it has again been considerably enlarged and revised and the results incorporated in the present Sixth Edition. In the portion relating to staining, the chapter on Brown Stains, which occupy an important position in connection with modern furniture and fittings, has been completely revised and enlarged by the introduction of the new and practically-tested Special-Oak Stains, An- thracene Stains and Genuine-Mahogany Stains, which have been very favorably received. Because of their lesser importance, the number of staining formulas for bright colors has been diminished, but these have been replaced by staining formulas for new products of greater fastness to light. All suggestions and experiments since the last edition have been incorporated here. The Sample Card of colors (in the Supplement) has been made to correspond with the new formulas in the book.
    [Show full text]
  • STATES PATENT OFFICE 2,497,519 ART of STABLZNG RAYON TYPE FABRIC Archibald S
    Patented Feb. 14, 1950 2497,519 UNITED STATES PATENT OFFICE 2,497,519 ART OF STABLZNG RAYON TYPE FABRIC Archibald S. Stevenson, Pawtucket, and Leo Beer, Providence, R. I., assignors to Alrose Chemical Company, Cranston, R. ., a corporation of Rhode Island No Drawing. Application December 4, 1946, Serial No. 13,918 15 Claims. (C. 8-125) 2 The textile fabric with the stabilization of the alternative, costly ventilating equipment is which the present invention is concerned, con 'equired, and tains Synthetic fibers of regenerated cellulose, h. Fabrics treated with resins frequently cause Such as viscose or cupra-ammonium rayon or of dermatitis when worn by persons whose skin is cellulose-acetate or other cellulose derivative, the Sensitive to such resins. fabric consisting of any of said fibers, alone or in It is among the objects of the present inven admixture with one or more of the other fibers, tion to produce textile fabrics of the rayon-type with or without components of wool, cotton or which are stabilized to a highly satisfactory de other fiber, natural or synthetic. Fabric of the gree against laundering shrinkage, without there character referred to is designated hereinafter () by incurring excessive loss of yardage and with both in the specification and the claims in the in out the need to this end for incorporating in or terest of brevity as "rayon-type fabric.' on the fibre any foreign substance, or altering As conducive to a clear understanding of the the molecular structure of the fiber or detracting from the weight or the tensile strength or the invention, it is noted that if such rayon-type abrasion resistance of the fibre or fabric or in fabric were subjected to the action of caustic 5 pairing the hand of feel thereof, or objectionably under conditions similar to those of mercerizing detracting from its luster.
    [Show full text]
  • Potassium and Phosphorus Have No Effect on Severity of Charcoal Rot of Soybean
    Can. J. Plant Pathol., 2016 http://dx.doi.org/10.1080/07060661.2016.1168869 Disease control/Moyens de lutte Potassium and phosphorus have no effect on severity of charcoal rot of soybean ALEMU MENGISTU1, XINHUA YIN2, NACER BELLALOUI3, ANGELA M. McCLURE2, DON D. TYLER4 AND KRISHNA N. REDDY5 1Crop Genetics Research Unit, United States Department of Agriculture, Agricultural Research Service (USDA-ARS), Jackson, TN, 38301, USA 2Department of Plant Sciences, University of Tennessee, Jackson, TN, 38301, USA 3Crop Genetics Research Unit, USDA-ARS, Stoneville, MS, 38776, USA 4Department of Biosystems Engineering and Soil Science, University of Tennessee, Jackson, TN, 38301, USA 5Crop Production Systems Research Unit, USDA-ARS, Stoneville, MS, 38776, USA (Accepted 17 March 2016) Abstract: Charcoal rot of soybean [Glycine max (L.) Merr.] caused by Macrophomina phaseolina is a disease of economic significance throughout the world. The effects of potassium (K) and phosphorus (P) fertilizer on disease development are unknown. Therefore, two separate trials were conducted in the field during 2008, 2009 and 2010 at Jackson and Milan, TN, USA to evaluate the effects of K and P on severity of −1 −1 charcoal rot. Rates of K (0, 45, 90, 134 and 179 kg K2Oha ) and P (0, 22, 45, 67 and 90 kg P2O5 ha ) were used, with a sixth rate ranging from 0–22 for P and 0–37 for K equal to the recommended K or P fertilizer application based on annual soil testing. The colony forming units of M. phaseolina in soil indicated no significant response for any P treatments in five of six location-by-year and for K applications in all six location-by-year environments.
    [Show full text]
  • Fertilizer Guide
    Jts - Using Wood Ashes in Fertilizer the Home Garden FG61 Guide Revised May 1982 Wood ashes can be useful as a fertilizer and magnesium oxides in fresh ash can react with liming material in home gardens, particularly on water to produce hydroxides or with carbon dioxide acid soils low in potassium. to produce carbonates. Calcium and magnesium oxides, hydroxides, and carbonates are found in Wood contains a small proportion of mineral, or commercial liming materials. inorganic matter. When wood is burned, mineral matter is left behind as a white-gray ash. Potassium (K) Hardwoods, or deciduous trees, when burned, produce a greater percent of ash than softwoods, Potassium is found in wood ash as potassium car- or conifers. Within a given tree, different bonate and potassium oxide. The potash content parts produce varying amounts of ash. Generally (K 0) of wood ash varies from 10 to 35%. These the percent of ash in the bark exceeds that of compounds, like lime, have a neutralizing effect the branches with the branches containing more on soil acidity. ash than the stem wood. The ash content not only Phosphorus (P) varies with tree species or the part of a tree, but also with the age of the tree, season of The content of phosphorus (as P^O ) in wood ash felling and method of burning. For woods in is usually less than 10%. temperate regions, the ash content usually ranges from 0.2% to 1.0%, occasionally approaching 3% to Fertilizer Value of Wood Ash 4%. The fertilizer value of wood ash depends on the Prior to World War II, wood ashes were used on a type of wood burned.
    [Show full text]
  • Feature Eurochem Widens Its Sights
    VOLGAKALIY PROJECT feature EuroChem widens its sights Fertilizer Focus discusses EuroChem’s potash capacity with Clark Bailey, Head of Mining, and future plans with Olivier Harvey, Head of Investor Relations Fertilizer Focus (FF): I understand in Brazil - the start of its potash (from source to solution) and as such, EuroChem are looking to offer N, P operations will add another dimension also enjoys many key partnerships and K nutrients to the market, which to its international presence, and and market relationships, which would make you a one-stop shop undoubtedly increase the Group’s remain valuable for our continuing for all fertilizers. How do you plan focus on the Asian, South American market penetration. This applies for to market these products and are and African markets. Needless to say all nutrients and will be particularly you looking at any joint marketing that with its global reach, the Group’s important in growth markets like Asia opportunities? premium products and distribution and Latin America, where we see business (EuroChem Agro), offers a EuroChem (EC): EuroChem is known the need for more balanced nutrient natural platform to leverage potash to be an ambitious company, whether sales. application. by its intensive value creating projects in Russia or growing M&A track- Still, due to internal potash In essence, with so many opportunities record. While today the Group has a requirements the Group’s potash available, it is probably still early solid presence in Europe, the CIS and market entry is expected to be rather to imagine what shape or form the the US - and recently announced the gradual, which also means flexible.
    [Show full text]
  • Linking Material Research on Alum-Treated Wood from The
    Braovac et al. Herit Sci (2018) 6:77 https://doi.org/10.1186/s40494-018-0241-y REVIEW Open Access Navigating conservation strategies: linking material research on alum‑treated wood from the Oseberg collection to conservation decisions Susan Braovac1* , Caitlin M. A. McQueen1, Malin Sahlstedt1,3, Hartmut Kutzke1, Jeannette J. Łucejko2 and Torunn Klokkernes1 Abstract From the mid-1800s to the late 1950s, conservation by alum salts (aluminum potassium sulfate dodecahydrate)— with some variations—was a routine method for treating highly deteriorated waterlogged archaeological wood in many countries, especially in Scandinavia. It was eventually replaced by newer methods in the 1960s, such as that using polyethylene glycol. Accordingly, the signs of deterioration in such collections and the reasons behind them are not well known among current preservation specialists. The research in the Saving Oseberg project (2014–2019) has shed light on the consequences of this treatment and reasons behind the severe deterioration observed today in many objects of the Oseberg Viking Age wooden fnds, which were conserved in the early 1900s. Saving Oseberg aims to provide research-based recommendations for the future preservation of the fnds, and as such, a large part of the project is aimed at improving our understanding of this complex material. Here the consequences of the method are summarized, drawing on the research to date. Chemical analyses of the Oseberg wood showed its current condi- tion to be highly degraded: little polysaccharide content is left and the lignin is signifcantly oxidized and extensively depolymerized. The conservation implications are also discussed. Keywords: Oseberg fnd, Wood degradation, Alum-treated wood, Alum, Potassium aluminum sulfate, Ammonium aluminum sulfate, Chemical analyses, Retreatment, Saving Oseberg Introduction obsolete.
    [Show full text]
  • Successful Biological Orcharding
    Successful Biological Orcharding with Michael Phillips author of “The Holistic Orchard” and “The Apple Grower from Lost Nation Orchard, New Hampshire Fascinating biological connections make for a healthy orchard ecosystem. All insect pests and fruit tree disease – whether fungal or bacterial – have launching points and particular timing. Healthy trees address these challenges first and foremost from within. Growers utilizing an ongoing investment in soil nutrition and biodiversity set the stage for gentler organic sprays to grow a successful fruit crop. The challenges you face at your locale will become far more manageable as you build a holistic system that keeps trees and berry plantings healthy from the get-go. Healthy Plant Metabolism Photosynthesis efficiency Protein synthesis Fats energy Resistance metabolites (essential oils and phenolics) Fungal Duff Management Forest edge ecology Mycorrhizal boon Tree root cycles Ramial wood chips Rechargeable biochar Biological mowing Fungal design notions Orchard Soil Health: Food Web Interaction & Fertility Ratios Compost wisdom Stocking the pantry Nutrient density Canadian Organic Growers 2019 2 Ecosystem Connections Understory fertility loop Root space, light space Bridge trees Biodiversity to the nth degree …Beneficial mathematics Pollinator habitat Braconid inspiration Spider glory Disease Progression Staging areas Fungal strategies Bacterial opportunists Integrating Holistic Tenets into Orchard Practice Phytochemical pathways Stimulating induced resistance Fatty acid nutrition Competitive
    [Show full text]
  • Potash, What Is It?
    Grade 7: Earth’s Crust and Resources Lesson: Potash, What Is It? Overview Students will discover what potash is, what it is used for, and interesting facts while reading a potash poster in search for answers. Students will consider the impact of potash on their lives. Duration: One Class Learning Outcomes and Indicators EC7.2 Identify locations and processes used to extract Materials: Earth’s geological resources and examine the impacts of Student Question Sheets those locations and processes on society and the Teacher Answer Sheets environment. Potash , What is It Poster PDF Identify locations of Saskatchewan’s primary mineral Potash Poster On-line resources (e.g., potash, gold, diamond, salt, uranium, copper, and graphite) and their primary uses. (EC7.2d) Provide examples of technologies used to further Notes to Teacher: This is an introductory lesson on scientific research related to extracting geological potash. resources (e.g., satellite imaging, magnetometer, and core sample drilling).(EC7.2f) Provide examples of Canadian contributions to the Prior Knowledge: scientific understanding and technological Before attempting these activities students should have developments related to surface and sub-surface some understanding of the following: geology and mining, and identify societal and The difference between rocks and minerals. economic factors that drive such exploration and research. (EC7.2h) Instructional Methods: Source: Saskatchewan Evergreen Curriculum Brainstorming Individual learning, research Big Picture Questions 1. What is Potash? 2. Why is it so important? Background Information Around 380 million years ago Saskatchewan was located south of the equator. (Modified from Storer, J., 1989) Saskatchewan Saskatchewan Mining Mining Association Association www.saskmining.ca Page 1 Grade 7 Earth’s Crust and Resources: Potash, What is it? continued A large salt water sea covered most of Saskatchewan and fertilizers.
    [Show full text]
  • Wood Byproducts
    Wood Byproducts 867. Absorption of calcium and magnesium by the 870. Alteration of soil temperature and moisture fruiting body of the cultivated mushroom Hypsizigus through mulching on the morpho-physiological marmoreus (Peck) bigelow from sawdust culture differentiation in maize. media. Awal, M. A. and Khan, M. A. H. Tabata, T. and Ogura, T. Pakistan Journal of Biological Sciences (Pakistan) 2(4): Journal of Food Science 68(1): 76-79. (2003); ISSN: 0022- 1164-1167. (Oct. 1999) 1147 NAL Call #: QH301 .P355; ISSN: 1028-8880. Descriptors: absorption/ calcium/ calcium carbonate/ Descriptors: mulching / soil/ wood waste/ maize calcium phosphates/ culture media/ growth/ magnesium/ Abstract: Mulching effects of sawdust, ash, rice straw and magnesium carbonate/ magnesium chloride/ magnesium water hyacinth on the morpho-physiological differentiation sulfate/ mycelium/ sawdust/ Basidiomycetes/ of maize (Zea mays L.) and to relate these with soil Basidiomycota/ calcium phosphate/ Hypsizygus/ environment were described. Water hyacinth and rice straw Hypsizygus marmoreus/ magnesium sulphate/ mulches had significant promotive effects on shoot Tricholomataceae elongation, root penetration, LAI and DM accumulation. All Abstract: H. marmoreus was cultivated in potato-sucrose- mulches conserved soil moisture but water hyacinth and agar (PSA) and in sawdust media supplemented with Ca or rice straw retained comparatively greater amount. Water Mg salts. The radial growth of mycelia was determined. The hyacinth and rice straw mulches reduced soil temperature mushroom spawn did not grow on PSA supplemented with fluctuations in all soil depths (5 to 15 cm) and retained Ca carbonate, Mg carbonate, or Mg hydroxide. However, higher soil temperatures at the early hours of the day (02 to the mycelia grew well on sawdust media supplemented with 06 hrs) which were considered to be the decisive factor for Ca phosphate, Ca carbonate, or Mg sulfate.
    [Show full text]
  • Craig S. Davis Craig Davis Practices in the Firm’S Complex Litigation and Class Action Group
    Craig S. Davis Craig Davis practices in the firm’s complex litigation and class action group. He has worked on lawsuits about business, including antitrust, consumer or product liability, and personal injury. His antitrust and product liability work focuses on representing buyers in class actions and other complex litigation with businesses or cartels that have manufactured defective products or disrupted buyers’ markets or supply chains. Craig S. Davis Craig has written on antitrust law, has presented on antitrust law, Associate contracts and warranties, and has recently chaired the Minnesota State 612-339-6900 Bar Association’s Antitrust Law Section. [email protected] Representative Cases Practices • Precision Associates, Inc., et al v. Panalpina World Transport (Holdings) Ltd., et Antitrust Law al., No. 08-CV-0042 (E.D.N.Y.) (over $300 million recovered to date) Products Liability & Consumer Fraud Litigation • In re Kitec Plumbing System Product Liability Litig., No. 09-md-2098 (MDL 2098) Education (N.D. Tex.) ($125 million recovered) Washington & Lee University School of Law, 1982 • In re Bristol-Myers Squibb Co. Securities Litigation, No. 07-CV-5867 (S.D.N.Y.) ($125 million recovered) Bar Admissions • In re Potash Antitrust Litigation (II), No. 1:08-cv-06910 (MDL 1996) (N.D. Ill.) 1983, Minnesota ($90 million recovered) • In re CertainTeed Corporation Roofing Shingles Products Liability Litigation,No. Court Admissions 2:07-md-01817 (MDL 1817) (E.D. Pa.) U.S. District Court, District of Minnesota • In re: Syngenta Litigation, No. 27-CV-15-3785 (Hennepin County, MN) U.S. Court of Appeals, Seventh Circuit • In re CertainTeed Fiber Cement Siding Litigation, No.
    [Show full text]