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Evolution of Resistance to Auxinic Herbicides: Historical Perspectives, Mechanisms of Resistance, and Implications for Broadleaf Weed Management in Agronomic Crops J
Weed Science 2011 59:445–457 Evolution of Resistance to Auxinic Herbicides: Historical Perspectives, Mechanisms of Resistance, and Implications for Broadleaf Weed Management in Agronomic Crops J. Mithila, J. Christopher Hall, William G. Johnson, Kevin B. Kelley, and Dean E. Riechers* Auxinic herbicides are widely used for control of broadleaf weeds in cereal crops and turfgrass. These herbicides are structurally similar to the natural plant hormone auxin, and induce several of the same physiological and biochemical responses at low concentrations. After several decades of research to understand the auxin signal transduction pathway, the receptors for auxin binding and resultant biochemical and physiological responses have recently been discovered in plants. However, the precise mode of action for the auxinic herbicides is not completely understood despite their extensive use in agriculture for over six decades. Auxinic herbicide-resistant weed biotypes offer excellent model species for uncovering the mode of action as well as resistance to these compounds. Compared with other herbicide families, the incidence of resistance to auxinic herbicides is relatively low, with only 29 auxinic herbicide-resistant weed species discovered to date. The relatively low incidence of resistance to auxinic herbicides has been attributed to the presence of rare alleles imparting resistance in natural weed populations, the potential for fitness penalties due to mutations conferring resistance in weeds, and the complex mode of action of auxinic herbicides in sensitive dicot plants. This review discusses recent advances in the auxin signal transduction pathway and its relation to auxinic herbicide mode of action. Furthermore, comprehensive information about the genetics and inheritance of auxinic herbicide resistance and case studies examining mechanisms of resistance in auxinic herbicide-resistant broadleaf weed biotypes are provided. -
Pesticide Use in Alaska 1978
t PESTICIDE USE IN ALASKA 1978 David P. Bleicher Entomology Research Technician Peter C. Scorup Agronomy Technician and William W. Mitchell Professor, Agronomy AGRICULTURAL EXPERIMENT STATION University of Alaska Fairbanks, Alaska 99701 Circular 40 James V. Drew, Director December, 1980 UNIVERSITY OF ALASKA Dr. Jay B a rto n................................................................................................................................ President Dr. Howard A. C u tler..................................................... Chancellor, University of Alaska, Fairbanks Dr. F. Lawrence B e n n e............................................................. tt Vice Chancellor of Academic Affairs Dr. Keith B. M a th e r ............................................. Vice Chancellor for Research and Advanced Study Dr. James V. D rew .................. Dean, School of Agriculture and Land Resources Management, and Director, Agricultural Experiment Station BOARD OF REGENTS Edward B. Rasmuson, President Jeffrey J. Cook, Vice-President Donald B. Abel, Jr., Secretary Herbert C. Lang, Treasurer Mildred Banfield Tim Burgess Dr. Hugh B. Fate, Jr., Past President Margaret J . Hall Sam Kito, Jr. Thomas J. Miklautsch Sharilyn I. Mumaw John T. Shively Dr. Jay Barton, Ex Officio Member The Agricultural Experiment Station at the University of Alaska provides station publica tions and equal educational and employment opportunities to all, regardless of race, color, reli gion, national origin, sex, age, disability, or status as a Vietnam era or disabled veteran. In order to simplify terminology, trade names of products or equipment may have been used in this publication. No endorsement of products or firms mentioned is intended, nor is criticism implied of those not mentioned. Material appearing herein may be reprinted provided no endorsement of a commercial pro duct is stated or implied. Please credit the researchers involved and the Agricultural Experiment Station, University of Alaska. -
Miscp55.Pdf (7.157Mb Application/Pdf)
CLOQUET FORESTRY CENTER RESEARCH PAPERS AND REPORTS FOR THE SEVENTY-FIVE YEAR PERIOD FROM 1912 ·1987 -· ' . ~.:• ·. ., .,. MINNESOTA AGRICULTURAL EXPERIMENT STATION UNIVERSITY OF MINNESOTA MISCELLANEOUS PUBLICATION 55·1988 ~ Cloquet Forestry Center Research Papers and Reports for the 75-Year Period from 1912-1987 Alvin A. Aim Professor, Department of Forest Resources College of Forestry University of Minnesota Minnesota Agricultural Experiment Station Miscellaneous Publication 55-1988 St. Paul, Minnesota This Miscellaneous Publication of the Minnesota Agrlcuhural Experiment Station Ia Intended for a very specialized audience. Initial distribution was made by the Cloquet Forestry Center of the College of Forestry, University of Minnesota. Copies will be available only until the Initial printing of the publication Ia exhausted. For copies write: Alvin Aim, Cloquet Forestry Center, 175 University Road, Cloquet, Minnesota 55720. PREFACE This paper provides a listing of reports, theses, and journal articles covering work conducted or materials and services provided at the University of Minnesot a, College of Forestry, Cloquet Forestry Center. The listing covers a 75-year period from 1912 to 1987. A total of 652 papers are listed. Although considerable effort was made to make the list as complete as possible it may be that there are some omissions . Hopefully, readers of the list will assist in providing any additional citations or changes that can be inserted in a future update . The listing is divided into two sections . Section I is in alphabetical sequence by author's last name. Section II provides a cross reference by subject matter with citation numbers referring to the Section I alphabetical listing. A chronological listing from 1912 to 1960 was compiled by Dr. -
Please Use Caution When Applying Herbicides Near Wine Grapes
Please Use Caution When Applying Herbicides Near Wine Grapes Phenoxy herbicides are very damaging to grapevines Grapevines are extremely sensitive to the application of certain herbicides commonly used by farmers and homeowners, especially phenoxy herbicides. Phenoxy herbicides include 2,4-D, MCPA, Crossbow, Banvel, Garlon, Weed-B-Gone, and Brush Killer, among others. The active ingredient of phenoxy-type herbicides may be listed on the label in “weed and feed” and brush control products for use in home landscaping as 2,4-dichlorophenoxy- acetic acid (2,4-D), 2-methyl-4-chlorophenoxyacetic acid, triclopyr, or dicamba. Sensitivity to phenoxy herbicides exists throughout the grapevine's growing season (mid-March through October). Grapevines are most vulnerable from the early growing season through the bloom and fruit set period (mid-March through June). Phenoxy herbicides do not require a pesticide license for purchase in Oregon and are readily available from home improvement stores, garden centers, retail nurseries, etc. This family of herbicides is very effective and economical for controlling broadleaf weeds. These herbicides are commonly used on a variety of sites such as lawns, golf courses, rights-of-way and agricultural fields and by homeowners. Two forms of spray drift can damage grapevines Drift of spray droplets: Small particles can move with the wind, land on grapes, and be absorbed into the grapevines through the cuticle on the leaf. The smaller the droplet, the further it will travel. Vapor drift: Volatile herbicides may produce vapors that are carried several miles from the target area. Herbicide particles or vapors may be moved from the application site by wind, shifting air currents, climatic inversions or using high pressures when spraying. -
This File Was Created by Scanning the Printed Publication
1974 USDA FOREST SERVICE GENERAL TECHNICAL REPORT PNW-24 This file was created by scanning the printed publication. Text errors identified by the software have been corrected; however, some errors may remain. PACIFIC NORTHWEST , FOREST AND RANGE EXPERIMENT STATION U.S. DEPARTMENT OF AGRICULTURE FOREST SERVICE PORTLAND, OREGON ABSTRACT Forest land generally produces considerable woody material other than that which is harvested as timber, needed for recycling of nutrients to the soil , or for sheltering wildlife and young forest seedlings. Excess forest residues, both living and dead, 'are often subject to treatment to reduce fire hazard, to eliminate obstruction to use and protection of the forest, and to remove unsightly accumulations of residue remaining after logging, road construction, or land clearing, or from thinning and pruning. The effects of these residues and of their treatment are frequently important , generally unmeasured, and are only poorly known. In this compendium, 27 research scientists have summarized the present state of knowledge of the effects of forest residues and residue treatments on the components of the forest environment: soil, water, air, fire, scenery, plant and forest growth, animal habitat, insects, and disease. In addition, they have questioned some current practices and have identified areas for research attention where current knowledge is lacking. Keywords: Environmental effects; forest residues--brush, slash; forest residue treatment--mechanical , prescribed burning; silviculture; coni ferae; Pacific Northwest; recommended research; fuel management. Mention of companies or products by name does not constitute an endorsement by the U.S. Department of Agriculture, nor does it imply approval of the product to the exclusion of others which may also be suitable. -
Or Only 2 Weeks, but in Very Dry Soils It Remained Active for Il/2 Years (142)
Item D Number 03519 G Not Scanned Author Romancier, Robert M. CorpOratB Author Georgia Forest Research Council Report/Article TitlB 2'4'D' 2.4'5-T> and Related Chemicals for Woody Plant Control in the Southeastern United States Journal/Book Title Year Month/Day Color D Number of Images 46 Descrlpton Notes Monday, December 31, 2001 Page 3619 of 3802 2, 4-D, 2, 4, 5-T, AND RELATED CHEMICALS FOR WOODY PLANT CONTROL IN THE SOUTHEASTERN UNITED STATES BY ROBERT M. ROMANCIER REPORT NUMBER 16 GEORGIA FOREST RESEARCH COUNCIL MACON, GEORGIA 1965 2, 4-D, 2, 4, 5-T, AND RELATED CHEMICALS FOR WOODY PLANT CONTROL IN THE SOUTHEASTERN UNITED STATES BY ROBERT M. ROMANCIER SOUTHEASTERN FOREST EXPERIMENT STATION FOREST SERVICE, U.S. DEPARTMENT OF AGRICULTURE ASHEVILLE, NORTH CAROLINA REPORT NUMBER 16 GEORGIA FOREST RESEARCH COUNCIL MACON, GEORGIA 1965 THE AUTHOR: Robert M. Romancier, a native of Springfield, Massa- chusetts, has degrees in forestry from the University of Massachusetts and Yale University. Since joining the U. S. Forest Service in 1957, he has served at field locations maintained by the Southeastern Forest Ex- periment Station at Franklin, Virginia, Macon, Georgia, and Charleston, South Carolina. At these centers, Roman- cier worked primarily in forest management research, especially on problems of pine regeneration and also the uses of fire and chemicals in hardwood control. Early in 1965 Romancier moved to Station headquarters in Asheville, North Carolina, where he is serving as a staff assistant in the Timber Management Research Office. THE COVER: Georgia Forestry Commission photo. The use of tractor-mounted mist blowers is one of the latest and most popular techniques in the application of herbicides for woody plant control in the Southeastern United States. -
INSECT, WEED, Anddisease CONTROL in TURFGRASS
SC-039 5/17 WEED,INSECT, and DISEASE CONTROL in TURFGRASS 2017–18 WEED, INSECT, and DISEASE CONTROL in TURFGRASS Editor Casey Reynolds, Assistant Professor and Extension Turfgrass Specialist Authors Casey Reynolds, Assistant Professor and Extension Turfgrass Specialist Matt Elmore, Assistant Professor and Extension Turfgrass Specialist Young-Ki Jo, Associate Professor and Extension Turfgrass Specialist Diane Silcox Reynolds, Post-doctoral Research Associate, Entomology AggieTurf: http://aggieturf.tamu.edu Contents Introduction . 1 Herbicide Mode of Action (MOA) classification . 3 Herbicides for general control of grassy and broadleaf weeds . 4 Preemergence herbicides for grassy and broadleaf weeds . 4 Selective postemergence herbicides . 9 Synthetic auxin postemergence herbicides for broadleaf weeds . 19 Product formulations containing synthetic auxin herbicides . 21 Nonsynthetic auxin postemergence herbicides for broadleaf weeds . 23 Nonselective herbicides for general weed control . 24 Herbicides for commonly occurring weeds . 25 Crabgrass (Digitaria spp ). 25 Goosegrass (Eleusine indica) . 27 Sandbur (Cenchrus spp ). 30 Annual bluegrass (Poa annua L ). 33 Dallisgrass (Paspalum dilatatum Poir ). 39 WEEDS Bermudagrass (Cynodon spp ). 41 Nutsedge (Cyperus spp ). and kyllinga (Kyllinga spp ). 43 Khakiweed and mat chafflower (Alternanthera spp ). 46 Herbicides containing sulfentrazone . 47 Herbicides containing quinclorac . 48 Turfgrass tolerance to postemergence herbicides . 49 Plant growth regulators . 51 Insect pests in turfgrasses . 53 Insecticide Mode of Action (MOA) classification . 55 Insecticides registered for use in turfgrasses . 56 Ants . 56 Armyworms . 58 Billbugs . 61 Black turfgrass ataenius . 63 Chinch bugs . 66 Cutworms . 69 Green June beetles . 72 Mealybugs . 74 Mites . 75 INSECTS Mole crickets . 76 Red imported fire ants . 79 Sod webworms . 81 White grubs . 84 Diseases in Texas turfgrasses . 86 Fungicide Mode of Action (MOA) classification . -
PESTICIDES Criteria for a Recommended Standard
CRITERIA FOR A RECOMMENDED STANDARD OCCUPATIONAL EXPOSURE DURING THE MANUFACTURE AND FORMULATION OF PESTICIDES criteria for a recommended standard... OCCUPATIONAL EXPOSURE DURING THE MANUFACTURE AND FORMULATION OF PESTICIDES * U.S. DEPARTMENT OF HEALTH, EDUCATION, AND WELFARE Public Health Service Center for Disease Control National Institute for Occupational Safety and Health July 1978 For sale by the Superintendent of Documents, U.S. Government Printing Office, Washington, D.C. 20402 DISCLAIMER Mention of company names or products does not constitute endorsement by the National Institute for Occupational Safety and Health. DHEW (NIOSH) Publication No. 78-174 PREFACE The Occupational Safety and Health Act of 1970 emphasizes the need for standards to protect the health and provide for the safety of workers occupationally exposed to an ever-increasing number of potential hazards. The National Institute for Occupational Safety and Health (NIOSH) has implemented a formal system of research, with priorities determined on the basis of specified indices, to provide relevant data from which valid criteria for effective standards can be derived. Recommended standards for occupational exposure, which are the result of this work, are based on the effects of exposure on health. The Secretary of Labor will weigh these recommendations along with other considerations, such as feasibility and means of implementation, in developing regulatory standards. Successive reports will be presented as research and epideiriologic studies are completed and as sampling and analytical methods are developed. Criteria and standards will be reviewed periodically to ensure continuing protection of workers. The contributions to this document on pesticide manufacturing and formulating industries by NIOSH staff members, the review consultants, the reviewer selected by the American Conference of Governmental Industrial Hygienists (ACGIH), other Federal agencies, and by Robert B. -
Phenoxy Reference Guide 3
Phenoxy Reference Guide www.nufarm.com.au 3 Contents Introduction 4 Mode of Action 4 Cereal Crop Growth Stages (including Zadok’s guide) 5 A Numerical Cereal Growth Scale – Zadok’s 6 What Phenoxy Where? 6 Common Weeds Controlled 7 Using the Growth Stage of Cereal Crops to Time Herbicide Applications 8 Damage to Cereal Crops from Incorrect Phenoxy Herbicide Applications 9 Salvage Spraying of Winter Crops 10 Cereal Tolerance Guide 11-13 Plant Back Periods for Fallow Seed Bed Preparation 14-15 Spray Grazing 16 Withholding Periods 16 Reducing Off-Target Herbicide Drift 16-19 Herbicide Resistance Management 20 4 Introduction At Nufarm, we are committed to supporting Australian growers Phenoxys were first developed in the USA in the early 1940’s with the highest quality crop protection and weed control and used commercially in 1946. Today they remain amongst products so maximum outputs can be achieved. the world’s most widely used herbicides, providing farmers and other users with broadleaf weed control in a multitude of Our commitment starts with the utilisation of world-leading agricultural and non-agricultural uses. Phenoxys work by manufacturing and environmental control technology. This is disrupting plant cell growth and form a part of the Group I reflected in research and development, container management, herbicides. and the establishment of regional service centres across Australia. Nufarm guarantees its Phenoxy products, which include Nufarm Amicide® 625, Nufarm Estercide® 800, Nufarm LV Nufarm, an Australian company, is a global leader in the Estercide® 600, Nufarm Surpass® 300, Nufarm Buttress®, manufacture, supply and marketing of 'phenoxys', with Baton®, Nufarm LVE MCPA and Nufarm MCPA 500. -
Long Island Pesticide Pollution Prevention Strategy
LONG ISLAND PESTICIDE POLLUTION PREVENTION STRATEGY New York State Department of Environmental Conservation July 11, 2014 THIS PAGE INTENTIONALLY LEFT BLANK LONG ISLAND PESTICIDE POLLUTION PREVENTION STRATEGY NYS DEPARTMENT OF ENVIRONMENTAL CONSERVATION 7/11/2014 TABLE OF CONTENTS EXECUTIVE SUMMARY The Challenge of Pesticide Use and Groundwater on Long Island………………….. ES-1 Pesticide Pollution Prevention Goal…………………………………………………. ES-3 Pesticide P2 Blueprint………….…………………………………………………….. ES-4 Summary of Long Island P2 Strategy Contents……………………………………… ES-8 CHAPTER 1: GOAL, PHILOSOPHY AND PURPOSE .......................................................... 1 CHAPTER 2: OVERVIEW: GROUNDWATER AND PESTICIDE USE ON LONG ISLAND Introduction……………………….…………………………………………….…………2 Groundwater and the Importance of Protecting It…………………………………….......2 Overview of Pesticide Use on Long Island……………………….…………….…………4 Pesticides Impacting Groundwater on Long Island…………………………………….....8 Water Quality Criteria…………………………...………………………………..……...11 CHAPTER 3: ACTION PLAN TO IMPLEMENT THE LONG ISLAND PESTICIDE POLLUTION PREVENTION STRATEGY Pesticide Pollution Prevention……………………………………………………….......14 A Pesticide P2 Blueprint …………………………………………………………...........14 Conduct Initial Assessment of Specific Active Ingredients and Pesticide P2 Needs …..18 Maximize Use of Water Quality Monitoring for Pesticides………..………………...….19 Establish, Convene and Chair Pesticide P2 Workgroups………...……………….…......20 P2 Workgroups Consider Specified Active Ingredients and Related P2……….……......24 DEC -
5. Key Post-Emergent Modes of Action
5. KEY POST-EMERGENT MODES OF ACTION When new mode of action herbicides are first introduced, of this enzyme is reduction in the production of fatty acids manufacturers typically provide robust formulations and use required for construction of cell membranes needed for rates. There is often a high level of “forgiveness” in the label. new cell production. As resistant populations are selected over time, there is The ACCase enzyme in most broadleaf plants is insensitive sometimes a period where the herbicide may still be useful, to herbicides from this herbicide mode of action, and hence albeit with reduced performance. In these situations of low- there is acceptable crop tolerance in most broadleaf crops level or emerging resistance, it is critical that users seek to and no efficacy on most broadleaf weeds. Some exceptions maximise application conditions to ensure everything possible exist. For example, haloxyfop is able to control the broadleaf is done to enhance the herbicide performance. weed storksbill or geranium (Erodium spp.) while high rates of clethodim can damage canola, particularly when flowering. Understanding how each of the key modes of action available for post-emergent weed control work, how they The three sub-groups of Group A herbicides bind to the target enter and translocate in the plant, and what is required to enzyme at slightly different, and overlapping, amino acids. This differential binding can lead to differences in target site maximise efficacy is critical knowledge for maximising field herbicide resistance patterns both between and within the performance. sub groups (refer to the Acetyl CoA Carboxylase inhibitors This chapter coves the key modes of actions used for post- section under section 6.3.1.1. -
MP44 Recommended Chemicals for Weed and Brush Control
Crop, Situation, and Active Chemical Formulated Material Method of Application Per Broadcast Acre Weeds Controlled Per Broadcast Acre Time of Application and Precautions RICE For information on burndown herbicides see p. 22 and p. 26, WEED RESPONSE RATINGS FOR BURNDOWN HERBICIDES. Clearfield Rice System imazethapyr @ 0.063 to Red rice, barnyardgrass, broad Newpath 2 AS Preplant incorporated or pre emergence Use on Clearfield rice varieties only. Pre ferred 0.095 lb/A followed by leaf signalgrass, sprangletop, fall 4 to 6 oz/A ppi. Follow with 4 to followed by post emergence. Apply 4 oz/A method for soil application is preplant incorporated 0.063 to 0.095 lb/A panicum, yellow nutsedge. 6 oz/A post emergence. Add a non preplant incorporated up to 7 days prior to at the time of final seedbed preparation. Incorpo Suppression of some aquatic ionic surfactant to post application. planting or preemergence immediately rate during final seedbed preparation pass. Flush broadleaf species. The 6oz rate may provide longer following planting. Apply post emergence for activation if rainfall does not occur within a few residual from a single application. treatment when rice is in 3 to 5leaf days of planting. Repeat flushing as needed to However, rates higher than 4 fol stage. Do not exceed 6 oz/A per applica keep soilapplied treatment active. Tank mixing lowed by 4 oz/A have not improved tion on conventional CL varieties and with propanil or other suitable products will be weed control when properly timed. 4 oz/A per application on CL hybrids.