IV. PLANT NUTRIENT ELEMENTS 1. Introduction There Are Sixteen
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
MATERIAL SAFETY DATA SHEET Potassium Sulfate
MATERIAL SAFETY DATA SHEET Potassium sulfate Section 1 Chemical Product and Company Identification MSDS Name: Potassium sulfate Catalog Numbers: P/6960/53, P/6960/60, P/6960/65, P/7000/53, P/7000/60, P/7000/65 Synonyms: Dipotassium sulfate; Potassium sulfate (2:1); Sulfuric acid, dipotassium salt. Company Identification: Fisher Scientific UK Bishop Meadow Road, Loughborough Leics. LE11 5RG For information in Europe, call: (01509) 231166 Emergency Number, Europe: 01509 231166 Section 2 Composition, Information on Ingredients CAS# Chemical Name: % EINECS# 7778805 Potassium sulfate >99 2319155 Hazard Symbols: None listed Risk Phrases: None listed Section 3 Hazards Identification EMERGENCY OVERVIEW Not available Potential Health Effects Eye: Dust may cause mechanical irritation. Skin: Low hazard for usual industrial handling. Ingestion: May cause gastrointestinal irritation with nausea, vomiting and diarrhea. Inhalation: Inhalation of dust may cause respiratory tract irritation. Chronic: Not expected to be a chronic hazard. Section 4 First Aid Measures Eyes: In case of contact, immediately flush eyes with plenty of water for at least 15 minutes. Get medical aid. Skin: In case of contact, flush skin with plenty of water. Remove contaminated clothing and shoes. Get medical aid if irritation develops and persists. Wash clothing before reuse. Ingestion: If swallowed, do not induce vomiting unless directed to do so by medical personnel. Never give anything by mouth to an unconscious person. Get medical aid. Inhalation: If inhaled, remove to fresh air. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid. Notes to Treat symptomatically and supportively. Physician: Section 5 Fire Fighting Measures General As in any fire, wear a selfcontained breathing apparatus in pressuredemand, Information: MSHA/NIOSH (approved or equivalent), and full protective gear. -
Nutrients: Nitrogen (N), Sulfur (S), Phosphorus (P), Potassium (K)
Nutrients: Nitrogen (N), Sulfur (S), Phosphorus (P), Potassium (K) Essential for all life, their availability (or lack thereof) controls the distribution of flora and fauna Look into their: Sources Pools (sinks) Fluxes root uptake + microbial uptake leaching solid solution Nutrients must be in a specific form – specie - for use by organisms Nutrient Cycling: N, S, P, K Soil Organic Matter (CHONPS) Minerals Primary Productivity (P, S, K) O Leaves & Roots A Decomposition Heterotrophic respiration B Gas loss SOM/Minerals Microbes leaching of nutrients plant nutrient uptake Nutrients: natural & anthropogenic sources (IN) and outputs (OUT) N2 fertilizers (chemical, manure, sludge) gases and particulates to atmosphere pesticides (fossil fuel combustion (coal/oil); cycles; trees) wet and dry deposition (acid rain, aerosols) harvesting plant tissue/residues root uptake IN OUT SOIL Pools (sinks) (SOM/clays/oxides) Fluxes (transformations) OUT IN ions and molecules in solution (leaching) roots (exudates, biomass) colloidal transport bedrock (1ry/2ry minerals in parent material) erosion runoff The Nitrogen Cycle + The Nitrogen Cycle Denitrification: - - NO3 is the most stable N2 (g) is prevalent in reduction of NO3 chemical form of N in the air of soil pores to reduced forms aerated soil solutions of N (N2) (energy- consuming) Atmospheric N deposition Nitrogen evolution (gases) Fertilizer additions 700 (+5) +5 Oxic - denitrification NO3 (+3) zone - NO2 (+2) (mV) NO (+1) h E N2O Suboxic (0) nitrification N state oxidation N2 236 zone immobilization -
Managing Potassium for Organic Crop Production by Robert Mikkelsen an Adequate K Supply Is Essential for Both Organic and Conventional Crop Production
NORTH AMERICA Managing Potassium for Organic Crop Production By Robert Mikkelsen An adequate K supply is essential for both organic and conventional crop production. Potas- sium is involved in many plant physiological reactions, including osmoregulation, protein synthesis, enzyme activation, and photosynthate translocation. The K balance on many farms is negative, where more K is removed in harvested crops than is returned again to the soil. An overview of commonly used K fertilizers for organic production is provided. otassium is an essential nutrient for plant growth, but it often receives less attention than N and P in many crop Pproduction systems. Many regions of the U.S.A. and all of the Canadian provinces remove more K during harvest than is returned to the soil in fertilizer and manure (Figure 1). In the U.S.A., an average of only 3 units of K is replaced as fertilizer and manure for every 4 units of K removed in crops, resulting in a depletion of nutrients from the soil and increasing occur- rences of deficiency in many places. Potassium is the soil cation required in the largest amount by plants, regardless of nutrient management philosophy. 1,400 Removal 1,200 Hay and forage crops can remove hundreds of pounds of K from the soil Manure each year, placing a heavy demand on soil resources. 1,000 Fertilizer Large amounts of K are required to maintain plant health 800 and vigor. Some specific roles of K in the plant include os- moregulation, internal cation/anion balance, enzyme activa- 600 tion, proper water relations, photosynthate translocation, and 400 protein synthesis. -
Writing Total and Net Ionic Equations
WRITING TOTAL AND NET IONIC EQUATIONS http://www.csun.edu/~hcchm001/FreshChemHandouts.html 1. Write the overall equation including the correct designations for the physical state of the substances (s, l, g, aq). Balance this equation. Most of these kinds of equations are double displacement reactions: AX + BY 6 AY + BX 2. For the total ionic equations, write strong electrolytes in solution in the form of aqueous ions. (a) Strong acids. The common strong acids and their aqueous ions are: HI Hydroiodic acid H+-(aq) + I (aq) HBr Hydrobromic acid H+-(aq) + Br (aq) HCl Hydrochloric acid H+-(aq) + Cl (aq) +- HNO33Nitric acid H (aq) + NO (aq) +- HClO44Perchloric acid H (aq) + ClO (aq) +-2 H24SO Sulfuric acid 2 H (aq) + SO4(aq) (b) Strong bases. Strong bases are the hydroxides of the alkali (Group IA) and alkaline earth (Group IIA) metals ions which are sufficiently soluble. The common strong bases and their aqueous ions are: LiOH Lithium hydroxide Li+-(aq) + OH (aq) NaOH Sodium hydroxide Na+-(aq) + OH (aq) KOH Potassium hydroxide K+-(aq) + OH (aq) +2 - Sr(OH)2Strontium hydroxide Sr (aq) + 2 OH (aq) +2 - Ba(OH)2 Barium hydroxide Ba (aq) + 2 OH (aq) (c) Soluble salts. Determinations of the solubility of a salt may be made by reference to SOLUBILITIES OF IONIC COMPOUNDS. Soluble salts are written as their aqueous ions: NaCl(aq) Sodium chloride Na+-(aq) + Cl (aq) +-2 K24SO (aq) Potassium sulfate 2 K (aq) + SO4(aq) +-2 Li23CO (aq) Lithium carbonate 2 Li (aq) + CO3(aq) +-3 Na34PO (aq) Sodium phosphate 3 Na (aq) + PO4(aq) +-2 (NH42) SO4(aq) Ammonium sulfate 2 NH4(aq) + SO4 (aq) 3. -
Phosphorus and Sulfur Cosmochemistry: Implications for the Origins of Life
Phosphorus and Sulfur Cosmochemistry: Implications for the Origins of Life Item Type text; Electronic Dissertation Authors Pasek, Matthew Adam Publisher The University of Arizona. Rights Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author. Download date 07/10/2021 06:16:37 Link to Item http://hdl.handle.net/10150/194288 PHOSPHORUS AND SULFUR COSMOCHEMISTRY: IMPLICATIONS FOR THE ORIGINS OF LIFE by Matthew Adam Pasek ________________________ A Dissertation Submitted to the Faculty of the DEPARTMENT OF PLANETARY SCIENCE In Partial Fulfillment of the Requirements For the Degree of DOCTOR OF PHILOSOPHY In the Graduate College UNIVERSITY OF ARIZONA 2 0 0 6 2 THE UNIVERSITY OF ARIZONA GRADUATE COLLEGE As members of the Dissertation Committee, we certify that we have read the dissertation prepared by Matthew Adam Pasek entitled Phosphorus and Sulfur Cosmochemistry: Implications for the Origins of Life and recommend that it be accepted as fulfilling the dissertation requirement for the Degree of Doctor of Philosophy _______________________________________________________________________ Date: 04/11/2006 Dante Lauretta _______________________________________________________________________ Date: 04/11/2006 Timothy Swindle _______________________________________________________________________ Date: 04/11/2006 -
Chemistry Inventory; Fall
CHEMISTRY FALL 2005 MSDS Mfg.'s Name Chemical Name Quantity Stored Storage Conditions (on file = 9) Aluminum 9 1.5 kg Aluminum chloride, anhydrous, 98.5% 9 0.2 kg Aluminum chloride · 6H2O 9 0.5 kg Aluminum hydroxide 9 0.5 kg Aluminum nitrate 9 0.5 kg Aluminum sulfate 9 0.5 kg Ammonia, concentrated 9 4.0 L Ammonium acetate 9 0.2 kg Ammonium chloride 9 Ammonium dihydrogen phosphate (monobasic) 9 0.4 kg J.T. Baker Ammonium hydrogen phosphate (dibasic) No 0.5 kg Ammonium nitrate 9 2.5 kg Ammonium oxalate 9 0.7 kg Ammonium peroxydisulfate 9 0.5 kg Ammonium sulfate 9 0.2 kg Antimony 9 0.4 kg Barium chloride, anhydrous 9 2.5 kg Barium chloride · 2H2O 9 2.5 kg Barium nitrate 9 0.8 kg Bismuth 9 2.0 kg Boric Acid 9 0.4 kg Brass 9 Bromine 9 2.5 kg Cadmium 9 0.1 kg Cadmium nitrate 9 0.3 kg Calcium acetate · xH2O 9 0.5 kg Calcium carbide 9 1.0 kg Calcium carbonate 9 2.2 kg Calcium chloride 9 1.0 kg Calcium hydroxide 9 0.3 kg Calcium nitrate · 4H2O 9 1.0 kg Calcium oxide 9 0.3 kg Calcium sulfate · 2H2O 9 1.0 kg Carbon 9 0.1 kg Ceric ammonium nitrate 9 0.5 kg Cesium chloride 9 0.01 kg Chromium 9 0.01 kg Chromium chloride 9 0.5 kg Chromium nitrate 9 0.5 kg Cobalt 9 0.025 kg Cobalt chloride 9 0.7 kg Cobalt nitrate 9 0.6 kg Copper (assorted) 9 4.0 kg Copper acetate 9 0.05 kg Copper chloride 9 0.1 kg Copper nitrate 9 3.5 kg Copper oxide 9 0.4 kg Cupric sulfate, anhydrous 9 0.5 kg Cupric sulfate · 5H2O 9 2.75 kg EDTA 9 0.6 kg Iodine 9 2.0 kg Iron (assorted) 9 5.0 kg MSDS Mfg.'s Name Chemical Name Quantity Stored Storage Conditions (on file = 9) Ferric ammonium -
POTASSIUM (K) Why Do My Plants Need Potassium? K Is the Most Important Element in Water Regulation Which Also Aids in Wear Tole
Extension Education Center 423 Griffing Avenue, Suite 100 Riverhead, New York 11901-3071 t. 631.727.7850 f. 631.727.7130 POTASSIUM (K) Why do my plants need potassium? K is the most important element in water regulation which also aids in wear tolerance and cooling. Insufficient K also leads to the potential for low temperature injury in late winter when food reserves are low. K is important in preventing salt stress. Can potassium fertilizer burn my turf? Usually muriate of potash (KCl) in fertilizer has a high burn potential. Potassium sulfate has a lower burn potential, releases K more gradually than muriate of potash, and is a better choice for quality turf areas. Potassium sulfate is preferred if large amounts have to be added because it is less likely to burn but it can also decrease pH. It is always wise to irrigate after any granular, salt type of potassium applied at the following levels: over 0.33 pounds/1000 square feet on close cut turf, and over 0.5 pounds/1000 square feet on high cut turf. Do not make applications just before freezing weather because freezing concentrates potassium in soil. Why do I need to add potassium fertilizer? Major amounts of K are lost when clippings removed, especially if using muriate of potash as your K source. K also readily leaches in sandy soils. Acidic soils tend to be potassium deficient. How much potassium should I add? Look for K number in N-P-K label that is half of N number. You can also spoon feed small quantities, 0.1-0.5 lb/1000square feet, particularly in summer to enhance wear tolerance and turf health. -
9005 Aluminum Potassium Sulfate
Material Safety Data Sheet 255 Norman. EMERGENCY NUMBERS: Lachine (Montreal), Que (USA) CHEMTREC : 1(800) 424-9300 (24hrs) H8R 1A3 (CAN) CANUTEC : 1(613) 996-6666 (24hrs) (USA) Anachemia : 1(518) 297-4444 (CAN) Anachemia : 1(514) 489-5711 WHMIS Protective Clothing TDG Road/Rail WHMIS CLASS: D-2B Not controlled under TDG (Canada). PIN: Not applicable. PG: Not applicable. Section I. Product Identification and Uses Product name ALUMINUM POTASSIUM SULFATE CI# Not available. Chemical formula AlK(SO4)2.12H2O CAS# 7784-24-9 Synonyms Potash alum, Potassium alum dodecahydrate, Sulfuric Code AC-0390 acid aluminum potassium salt, AC-0390, AC-0391, 03312, 03324 Formula weight 474.38 Supplier Anachemia Canada. Supersedes 255 Norman. Lachine (Montreal), Que H8R 1A3 Material uses For laboratory use only. Section II. Ingredients Name CAS # % TLV 1) ALUMINUM POTASSIUM SULFATE DODECAHYDRATE 7784-24-9 60-100 Exposure limits: ACGIH (Aluminum soluble salts (as Al)) TWA 2 mg(Al)/m3 Toxicity values of the ALUMINUM POTASSIUM SULFATE: hazardous ingredients LD50: Not available. LC50: Not available. Section III. Physical Data ALUMINUM POTASSIUM SULFATE page 2/4 Physical state and White odorless crystals. appearance / Odor pH (1% soln/water) 3.3 (0.2M aqueous solution) Odor threshold Not available. Percent volatile 0% at 21°C Freezing point 92°C Boiling point Decomposes at 200°C. Specific gravity 1.72-1.75 Vapor density Not available. Vapor pressure 0 mm of Hg (@ 20°C) Water/oil dist. coeff. Not available. Evaporation rate Not applicable. Solubility Soluble in cold water. Section IV. Fire and Explosion Data Flash point None Flammable limits Not applicable. -
Phosphorus: from the Stars to Land &
Phosphorus: From the Stars to Land & Sea The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters. Citation Cummins, Christopher C. “Phosphorus: From the Stars to Land & Sea.” Daedalus 143, no. 4 (October 2014): 9–20. As Published http://dx.doi.org/10.1162/DAED_a_00301 Publisher MIT Press Version Final published version Citable link http://hdl.handle.net/1721.1/92509 Terms of Use Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. Phosphorus: From the Stars to Land & Sea Christopher C. Cummins Abstract: The chemistry of the element phosphorus offers a window into the diverse ½eld of inorganic chemistry. Fundamental investigations into some simple molecules containing phosphorus reveal much about the rami½cations of this element’s position in the periodic table and that of its neighbors. Addition - ally, there are many phosphorus compounds of commercial importance, and the industry surrounding this element resides at a crucial nexus of natural resource stewardship, technology, and modern agriculture. Questions about our sources of phosphorus and the applications for which we deploy it raise the provocative issue of the human role in the ongoing depletion of phosphorus deposits, as well as the transfer of phos- phorus from the land into the seas. Inorganic chemistry can be de½ned as “the chem- istry of all the elements of the periodic table,”1 but as such, the ½eld is impossibly broad, encompassing everything from organic chemistry to materials sci- ence and enzymology. -
Nitrogen and Phosphorus Fertilization Increases the Uptake of Soil Heavy Metal Pollutants by Plant Community
Nitrogen and phosphorus fertilization increases the uptake of soil heavy metal pollutants by plant community Guangmei Tang Yunnan University Xiaole Zhang Chuxiong Normal University Lanlan Qi Yunnan Normal University Chenjiao Wang Yunnan Normal University Lei Li Yunnan Normal University Jiahang Guo Yunnan Normal University Xiaolin Dou Research Centre for Eco-Environmental Sciences Chinese Academy of Sciences Meng Lu Yunnan University Jingxin Huang ( [email protected] ) Yunnan University https://orcid.org/0000-0001-5641-2731 Research Keywords: soil heavy metals pollution, phytoremediation, nitrogen and phosphorus fertilizer Posted Date: April 19th, 2021 DOI: https://doi.org/10.21203/rs.3.rs-413625/v1 License: This work is licensed under a Creative Commons Attribution 4.0 International License. Read Full License Page 1/20 Abstract Background: Soil heavy metal pollution is widespread around the world. Heavy metal pollutants are easily absorbed by plants and enriched in food chain, which may harm human health, cause the loss of plant, animal and microbial diversity. Plants can generally absorb soil heavy metal pollutants. Compared with hyperaccumulation plants, non-hyperaccumulator plant communities have many advantages in the remediation of heavy metals pollution in soil. However, the amount of heavy metals absorbed could be less, and the biomass would be reduced under heavy metal pollution. The application of nitrogen (N) and phosphorus (P) is inexpensive and convenient, which can increase the resistance of plants to adversity and promote the growth of plants of heavy metal polluted soils. Methods: We designed a comparative greenhouse experiment with heavy metal contaminated soils, and set up four treatments: CK treatment (soil without fertilizer), N treatment (soil with N addition), P treatment (soil with P addition), and N+P treatment (soil with N and P addition). -
PSC Technical Advisory Panel Report.Pdf
National Organic Standards Board Technical Advisory Panel Review compiled by University of California Sustainable Agriculture Research and Education Program (UC SAREP) for the USDA National Organic Program Potassium Sulfate for use in crop production Executive Summary1 The following petition is under consideration with respect to NOP regulations subpart G, governing the inclusion of substances on the National List of Allowed and Prohibited Substances: Petitioned: Addition of potassium sulfate to section 205.601(j), “Synthetic substances allowed for use in organic crop production as plant or soil amendments.” Potassium sulfate is a source of highly soluble potassium, and has the additional benefit of supplying sulfur. It is used in agricultural production systems where potassium is a limiting nutrient and also as a substitute for potassium chloride on chloride- sensitive crops. The NOP has no prior ruling on the use of the substance. The nature of the petitioned substance is highly debatable. Naturally occurring potassium sulfate is not subject to the TAP review process because “naturally-occurring” substances are implicitly allowed for use in organics. The intended sourcing of the petitioned form of potassium sulfate, however, brings into question the interpretive distinctions between a “synthetic” and a “non-synthetic” under organic law. According to the petitioner, the product “should not be treated differently than product produced from natural brines” since it is produced from naturally occurring minerals. The crux of the decision to grant the petition rests on how one chooses to interpret this equivalency claim. All TAP reviewers agreed that the petitioned substance should be considered synthetic. In general, the reviewers also agreed that it should be restricted as a soil adjuvant. -
Chapter 18: the Representative Elements
Chapter 18: The Representative Elements Big Idea: The structure of atoms determines their o Hydrogen properties; o Group 1A consequently, the o Group 2A behavior of elements is o Group 3A related to their o Group 4A location in the o Group 5A periodic table. In general nonmetallic o Group 6A character becomes o Group 7A more pronounced o Group 8A toward the right of the periodic table. 1 The Representative Elements 2 Chapter 18: The Representative Elements The Representative Elements 3 Chapter 18: The Representative Elements Hydrogen Electron configuration is 1s1(similar to the electron configurations of group 1A elements) Classified as a non metal Therefore it doesn’t fit into any group 4 Chapter 18: The Representative Elements Hydrogen Most H is made up of only two particles (an electron and a proton) H is the most abundant element in the universe and accounts for 89% of all atoms Little free H on earth H2 gas is so light that it moves very fast and can escape the Earth’s gravitational pull Need heavier planets to confine H2 5 Chapter 18: The Representative Elements Group 1A The Alkali Metals Electron configuration is ns1(n = period number). Lose their valence e- easily (great reducing agents). Most violently reactive of all the metals. React strongly with H2O(l); the vigor of the reaction increases down the group. The alkali metals are all too easily oxidized to be found in their free state in nature. 6 Chapter 18: The Representative Elements Group 1A Lithium Sodium Strong polarizing power Mined as rock salt Forms bonds with which is a deposit of highly covalent sodium chloride left as character ancient oceans evaporated Used in ceramics, Lubricants, Medicine Extracted using (lithium carbonate electrolysis of molten (treatment for bipolar NaCl (Downs process) disorder)) 7 Chapter 18: The Representative Elements Group 1A Important Group NaCl NaOH NaHCO3 (Baking Soda) - - HCO3 (aq) + HA(aq) A (g) + H2O(l) +CO2(g) The weak acid (HA) must be present in the dough; Some weak acids are sour milk, buttermilk, lemon jucie, or vinegar.