National Program 215: Pasture, Forage and Rangeland Systems

Total Page:16

File Type:pdf, Size:1020Kb

National Program 215: Pasture, Forage and Rangeland Systems 1 National Program 215: Pasture, Forage and Rangeland Systems Accomplishment Report 2005-2010 National Program 215: Pasture, Forage and Rangeland Systems Agricultural Research Service U.S. Department of Agriculture Table of Contents Introduction 2 Program Component 1. Rangeland Research 5 Program Component 2. Pasture Research 36 Program Component 3. Harvested Forages 58 Program Component 4. Turf 68 Appendix 1. Overview of ARS 72 Appendix 2. Overview of NP215 74 Appendix 3. Plant Improvement Impacts 77 Appendix 4. Rangeland References 78 Appendix 5. Pasture References 108 Appendix 6. Harvested Forages References 120 Appendix 7. Turf References 126 2 Introduction Purpose of this Report This report summarizes selected accomplishments of the Agricultural Research Service’s national program focusing on Pasture, Forage and Rangeland Systems. A key purpose of the report is to provide information for an external assessment of the program’s performance over the past 5 years. This assessment will also provide recommendations for the future direction of the program. Because of space limitations not all of the program accomplishments have been presented. The Agricultural Research Service (ARS) The ARS is the principal in-house research agency of the U.S. Department of Agriculture (USDA). It is one of the four component agencies of the Research, Education, and Economics (REE) mission area. An overview of the ARS mission, structure, planning process, and relationships with other agencies is provided in Appendix One. National Program 215: Pasture, Forage and Rangeland Systems Our Nation's grass and shrub lands- including pastures, hay, feedstock, turf and range lands- provide forages, bioenergy, open spaces and ecological services that contribute significantly to our agricultural, environmental, economic, and social well-being. Rangeland, pasture, and forages together comprise about 55% of the total land surface of the United States, about a billion acres. Privately owned lands comprise about 45% of this amount. The Nation’s 30-40 million acres of turf lands are found around homes, schools, municipal and commercial buildings, in our parks, greenbelts and recreational areas, and along our roadsides, airports and right-of-ways. These lands represent the largest and most diverse land resources in the U.S. The goals of this national program are to contribute significantly to meeting national needs for food, fiber, fuel and ecosystem services by restoring, conserving and using the Nation's pasture, hay, turf, and range lands in a way that meets the objectives of the U.S. Department of Agriculture, and the REE (Research, Education and Economics) Mission Area. Goals and objectives are met through basic and applied research that develops and transfers economically viable and environmentally sustainable conservation, production and monitoring practices and strategies that incorporate an improved understanding of ecological and agronomic processes, enhanced plant materials, advanced technologies, and user-friendly decision-support tools based on sound science. Outputs of National Program 215 (NP215) research support the “Actionable Strategies” of the ARS Strategic Plan associated with the following objective and performance measures: Objective 6.3: Conserve and Use Pasture and Range Lands Efficiently Healthy, vigorous plant communities on diverse lands protect soil quality, prevent soil erosion, and provide sustainable forage and cover for livestock and wildlife. They also provide fiber and a diverse habitat for wildlife, improve water quality and sequester atmospheric carbon dioxide. The four serious threats that pose an increasing risk to the values, goods, and services provided by public and private pasture and range lands are wildfire, invasive species, loss of open space, and reduced profitability. ARS works with public and private land stewards to maintain/enhance watersheds and landscapes and their environmental services. The Agency produces the scientific knowledge needed to actively manage pasture and range lands and maintain the health, diversity, and resilience of these ecosystems. Performance Measure 6.3.1: Improved management practices and technologies for managing pasture and range lands to improve economic profitability and enhance environmental values. 3 Actionable Strategies: Provide new environmentally acceptable practices and technologies for controlling invasive weeds and reduce wildfires. Provide science-based information and technologies to better manage environmental services while improving the economic effectiveness of forage-based livestock, bioenergy, and turf systems. Provide improved grass and forage legume germplasm to meet economic and environmental objectives including conserving and improving pasture, forage, turf, and rangeland condition; plant vigor and diversity; water management; and environmental stewardship. Accelerate development of methodologies and technologies to measure and monitor pasture and range land health and assess and document the benefits of conservation practices. Provide cost-effective practices and strategies for restoring degraded pasture, forage, and range lands. Develop and promote grazing and harvested forage practices and technologies for livestock and bioenergy production that reduce input costs and increase sustainability. Develop and promote management practices and technologies that reduce animal exposure to toxic plants. NP215 Collaboration Solving today’s complex problems requires sustained research by interdisciplinary teams working at multiple scales. Creating such teams requires collaboration between (1) ARS scientists and locations; (2) between ARS scientists and scientists in other federal, state, local and private research institutions; and (3) between scientists and those citizens who use the products of research. An overview of ARS locations with projects in NP215 and internal and external collaboration is provided in Appendix Two. Beneficiaries of this National Program: Since 2/3 of the world’s agricultural land is pasture, hay and range lands, the research done in this research program will benefit the country and the rest of the world in meeting their economic, social and environmental needs. Livestock producers and Natural Resource Conservation Service and Extension workers that provide information to land owners will benefit. The products of this program will benefit federal land stewardship agencies such as the Bureau of Land Management, Forest Service, National Park Service, Fish and Wildlife Service, Bureau of Indian Affairs, Department of Defense, and U.S. Geological Survey (USGS) that are responsible for almost a billion acres of public land. Beneficiaries include state land management agencies responsible for state-owned grazing lands, and policymakers and rural and urban community organizations that need information and technologies to assess and improve the management of the nation’s lands. Finally, the public at large will benefit through improved management of the Nation's pasture, forage, turf and range lands through greater economic opportunities, access to high quality food, and improved recreational opportunities, new bioenergy resources, and enhanced ecological services. Summary of Technology Transfer Activities Activity Number of activities Total attendance Field days 276 14,484 Popular press 389 articles Radio-TV items 1284 Decision support 11 tools Presentations to 980 44,192 customers K-12 School 439 19,496 Events Patents and 27 CRADAS Germplasm 28 releases Exhibits at Fairs 21 4 Component 1: Rangelands Management Systems to Improve Economic Viability and Enhance the Environment Integrating Across Research Problem Areas to Meet National Needs: Developing science- based databases and decision-support tools for formulating land management strategies at a national level is an an increasingly important priority. The research from its national network of laboratories over the past 50 years has positioned ARS scientists to make significant contributions in working with other Federal agencies to develop nationally oriented analyses, databases and decision-support tools essential to meet policy needs. Two examples where ARS grazingland research has contributed significantly to aiding other Federal agencies in meeting their mission objectives are CEAP (Conservation Effects Assessment Project) and ESDs (Ecological Site Descriptions). Problem Statement A Need for economically viable rangeland management practices, germplasm, technologies and strategies to conserve and enhance rangeland ecosystems. Objective A.1. Develop management and monitoring strategies and decision support tools that conserve natural resources while maintaining economic objectives. Management Strategies and Decision-Support Tools Research in this section is focused on issues such as soil erosion, woody plant management, carbon sequestration, and estimating precipitation over broad areas. Some accomplishments provide decision support models, which can be used directly by managers, and some provide background information of value to both managers and policymakers. Saving the Nation's soil resources. Nationally 20% of non-federal rangelands generate over 65% of the average annual soil loss, and between 23 and 29% (92-106 million acres) of the Nation’s rangelands are vulnerable to accelerated soil loss. ARS scientists in Reno, NV with ARS scientists in Tucson, AZ and Boise, ID, and NRCS scientists developed the Rangeland Hydrology and Erosion Model (RHEM), a process-based model for assessing
Recommended publications
  • GENETICS, GENOMICS and BREEDING of FORAGE CROPS Genetics, Genomics and Breeding of Crop Plants
    Genetics, Genomics and Breeding of Genetics, Genomics and Breeding of About the Series Genetics, Genomics and Breeding of AboutAbout the the Series Series SeriesSeries on on BasicBasic and and advanced advanced concepts, concepts, strategies, strategies, tools tools and and achievements achievements of of Series on Basicgenetics, and advanced genomics concepts, and breeding strategies, of crops tools haveand beenachievements comprehensively of Genetics,Genetics, Genomics Genomics and and Breeding Breeding of of Crop Crop Plants Plants genetics,genetics, genomics genomics and and breeding breeding of ofcrops crops have have been been comprehensively comprehensively Genetics, Genomics and Breeding of Crop Plants deliberateddeliberated in in30 30volumes volumes each each dedicated dedicated to toan an individual individual crop crop or orcrop crop Series Editor deliberatedgroup. in 30 volumes each dedicated to an individual crop or crop Series Series Editor Editor group.group. Chittaranjan Chittaranjan Kole, Kole, Vice-Chancellor, Vice-Chancellor, BC BC Agricultural Agricultural University, University, India India The series editor and one of the editors of this volume, Prof. Chittaranjan Chittaranjan Kole, Vice-Chancellor, BC Agricultural University, India TheThe series series editor editor and and one one of theof the editors editors of thisof this volume, volume, Prof. Prof. Chittaranjan Chittaranjan Kole,Kole, is globallyis globally renowned renowned for for his his pioneering pioneering contributions contributions in inteaching teaching and and Kole,research is globally for renowned nearly three for decades his pioneering on plant contributions genetics, genomics, in teaching breeding and and researchresearch for for nearly nearly three three decades decades on onplant plant genetics, genetics, genomics, genomics, breeding breeding and and biotechnology.biotechnology.
    [Show full text]
  • State of New York City's Plants 2018
    STATE OF NEW YORK CITY’S PLANTS 2018 Daniel Atha & Brian Boom © 2018 The New York Botanical Garden All rights reserved ISBN 978-0-89327-955-4 Center for Conservation Strategy The New York Botanical Garden 2900 Southern Boulevard Bronx, NY 10458 All photos NYBG staff Citation: Atha, D. and B. Boom. 2018. State of New York City’s Plants 2018. Center for Conservation Strategy. The New York Botanical Garden, Bronx, NY. 132 pp. STATE OF NEW YORK CITY’S PLANTS 2018 4 EXECUTIVE SUMMARY 6 INTRODUCTION 10 DOCUMENTING THE CITY’S PLANTS 10 The Flora of New York City 11 Rare Species 14 Focus on Specific Area 16 Botanical Spectacle: Summer Snow 18 CITIZEN SCIENCE 20 THREATS TO THE CITY’S PLANTS 24 NEW YORK STATE PROHIBITED AND REGULATED INVASIVE SPECIES FOUND IN NEW YORK CITY 26 LOOKING AHEAD 27 CONTRIBUTORS AND ACKNOWLEGMENTS 30 LITERATURE CITED 31 APPENDIX Checklist of the Spontaneous Vascular Plants of New York City 32 Ferns and Fern Allies 35 Gymnosperms 36 Nymphaeales and Magnoliids 37 Monocots 67 Dicots 3 EXECUTIVE SUMMARY This report, State of New York City’s Plants 2018, is the first rankings of rare, threatened, endangered, and extinct species of what is envisioned by the Center for Conservation Strategy known from New York City, and based on this compilation of The New York Botanical Garden as annual updates thirteen percent of the City’s flora is imperiled or extinct in New summarizing the status of the spontaneous plant species of the York City. five boroughs of New York City. This year’s report deals with the City’s vascular plants (ferns and fern allies, gymnosperms, We have begun the process of assessing conservation status and flowering plants), but in the future it is planned to phase in at the local level for all species.
    [Show full text]
  • Leadership and Ethical Development: Balancing Light and Shadow
    LEADERSHIP AND ETHICAL DEVELOPMENT: BALANCING LIGHT AND SHADOW Benyamin M. Lichtenstein, Beverly A. Smith, and William R. Torbert A&stract: What makes a leader ethical? This paper critically examines the answer given by developmental theory, which argues that individuals can develop throu^ cumulative stages of ethical orientation and behavior (e.g. Hobbesian, Kantian, Rawlsian), such that leaders at later develop- mental stages (of whom there are empirically very few today) are more ethical. By contrast to a simple progressive model of ethical develop- ment, this paper shows that each developmental stage has both positive (light) and negative (shadow) aspects, which affect the ethical behaviors of leaders at that stage It also explores an unexpected result: later stage leaders can have more significantly negative effects than earlier stage leadership. Introduction hat makes a leader ethical? One answer to this question can be found in Wconstructive-developmental theory, which argues that individuals de- velop through cumulative stages that can be distinguished in terms of their epistemological assumptions, in terms of the behavior associated with each "worldview," and in terms of the ethical orientation of a person at that stage (Alexander et.al., 1990; Kegan, 1982; Kohlberg, 1981; Souvaine, Lahey & Kegan, 1990). Developmental theory has been successfully applied to organiza- tional settings and has illuminated the evolution of managers (Fisher, Merron & Torbert, 1987), leaders (Torbert 1989, 1994b; Fisher & Torbert, 1992), and or- ganizations (Greiner, 1972; Quinn & Cameron, 1983; Torbert, 1987a). Further, Torbert (1991) has shown that successive stages of personal development have an ethical logic that closely parallels the socio-historical development of ethical philosophies during the modern era; that is, each sequential ethical theory from Hobbes to Rousseau to Kant to Rawls explicitly outlines a coherent worldview held implicitly by persons at successively later developmental stages.
    [Show full text]
  • University of Florida Thesis Or Dissertation
    BIOLOGICAL STUDIES ON THE GUT SYMBIONT BURKHOLDERIA ASSOCIATED WITH BLISSUS INSULARIS (HEMIPTERA: BLISSIDAE) By YAO XU A DISSERTATION PRESENTED TO THE GRADUATE SCHOOL OF THE UNIVERSITY OF FLORIDA IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF DOCTOR OF PHILOSOPHY UNIVERSITY OF FLORIDA 2015 1 © 2015 Yao Xu 2 ACKNOWLEDGMENTS I am fortunate to have been mentored by Dr. Drion Boucias during my doctoral program. His constructive criticism, guidance, and generosity of time and resources allowed me to achieve both breadth and depth in research. Without his inspirational ideas and timely feedback, this dissertation would never have been accomplished on time. I owe my deepest gratitude to my co- advisor, Dr. Eileen Buss, for her encouragement, support, and advice on my academic and personal development. I thank her for admitting me, guiding me to enter the world of Southern chinch bugs, and trusting me. I also would like to thank my other committee members, Drs. Frederick Fishel (Department of Agronomy, UF), Kevin Kenworthy (Department of Agronomy, UF), and Cindy McKenzie (United States Department of Agriculture-Agricultural Research Service). I appreciate their time, comments, and encouragement on my research and this dissertation. Many scientists and colleagues have been helpful to me during my doctoral program. First, I thank Dr. Michael Scharf (Department of Entomology, Purdue University) for his valuable comments on the detoxification enzyme work, and especially for hosting me in his laboratory in March 2014. Second, I thank Dr. Paul Linser (Whitney Laboratory for Marine Bioscience, UF) for his guidance on the confocal microscopy and allowing me to use the microscopes in his laboratory in April 2015.
    [Show full text]
  • Predation of the Chinch Bug, Blissus Occiduus Barber (Hemiptera: Blissidae) by Geocoris Uliginosus (Say) (Hemiptera: Lygaeidae)
    University of Nebraska - Lincoln DigitalCommons@University of Nebraska - Lincoln Faculty Publications: Department of Entomology Entomology, Department of 2008 Predation of the Chinch Bug, Blissus occiduus Barber (Hemiptera: Blissidae) by Geocoris uliginosus (Say) (Hemiptera: Lygaeidae) J. D. Carstens University of Nebraska-Lincoln Frederick P. Baxendale University of Nebraska-Lincoln, [email protected] Tiffany Heng-Moss University of Nebraska-Lincoln, [email protected] Robert J. Wright University of Nebraska, [email protected] Follow this and additional works at: https://digitalcommons.unl.edu/entomologyfacpub Part of the Entomology Commons Carstens, J. D.; Baxendale, Frederick P.; Heng-Moss, Tiffany; and Wright, Robert J., "Predation of the Chinch Bug, Blissus occiduus Barber (Hemiptera: Blissidae) by Geocoris uliginosus (Say) (Hemiptera: Lygaeidae)" (2008). Faculty Publications: Department of Entomology. 157. https://digitalcommons.unl.edu/entomologyfacpub/157 This Article is brought to you for free and open access by the Entomology, Department of at DigitalCommons@University of Nebraska - Lincoln. It has been accepted for inclusion in Faculty Publications: Department of Entomology by an authorized administrator of DigitalCommons@University of Nebraska - Lincoln. JOURNAL OF THE KANSAS ENTOMOLOGICAL SOCIETY 81(4), 2008, pp. 328–338 Predation of the Chinch Bug, Blissus occiduus Barber (Hemiptera: Blissidae) by Geocoris uliginosus (Say) (Hemiptera: Lygaeidae) J. D. CARSTENS,F.P.BAXENDALE,T.M.HENG-MOSS, AND R. J. WRIGHT Department of Entomology, University of Nebraska-Lincoln, Lincoln, NE 68583 ABSTRACT: Big-eyed bugs have been well documented as predators on a diverse group of arthropod prey in turfgrasses; however, little is known about the big-eyed bug species associated with buffalograss, or their feeding habits relative to the western chinch bug, Blissus occiduus Barber.
    [Show full text]
  • Diversidade Genética Molecular Em Germoplasma De Mangueira
    1 Universidade de São Paulo Escola Superior de Agricultura “Luiz de Queiroz” Diversidade genética molecular em germoplasma de mangueira Carlos Eduardo de Araujo Batista Tese apresentada para obtenção do título de Doutor em Ciências. Área de concentração: Genética e Melhoramento de Plantas Piracicaba 2013 1 Carlos Eduardo de Araujo Batista Bacharel e Licenciado em Ciências Biológicas Diversidade genética molecular em germoplasma de mangueira versão revisada de acordo com a resolução CoPGr 6018 de 2011 Orientador: Prof. Dr. JOSÉ BALDIN PINHEIRO Tese apresentada para obtenção do título de Doutor em Ciências. Área de concentração: Genética e Melhoramento de Plantas Piracicaba 2013 Dados Internacionais de Catalogação na Publicação DIVISÃO DE BIBLIOTECA - ESALQ/USP Batista, Carlos Eduardo de Araujo Diversidade genética molecular em germoplasma de mangueira / Carlos Eduardo de Araujo Batista.- - versão revisada de acordo com a resolução CoPGr 6018 de 2011. - - Piracicaba, 2013. 103 p: il. Tese (Doutorado) - - Escola Superior de Agricultura “Luiz de Queiroz”, 2013. 1. Diversidade genética 2. Germoplasma vegetal 3. Manga 4. Marcador molecular I. Título CDD 634.441 B333d “Permitida a cópia total ou parcial deste documento, desde que citada a fonte – O autor” 3 Aos meus pais “Francisco e Carmelita”, por todo amor, apoio, incentivo, e por sempre acreditarem em mim... Dedico. Aos meus amigos e colegas, os quais se tornaram parte de minha família... Ofereço. 4 5 AGRADECIMENTOS À Escola Superior de Agricultura “Luiz de Queiroz” (ESALQ/USP) e ao Programa de Pós-Graduação em Genética e Melhoramento de Plantas, pela qualidade do ensino e estrutura oferecida e oportunidade de realizar o doutorado. Ao Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) pela concessão de bolsas de estudo Especialmente o Prof.
    [Show full text]
  • Tidal Marsh Recovery Plan Habitat Creation Or Enhancement Project Within 5 Miles of OAK
    U.S. Fish & Wildlife Service Recovery Plan for Tidal Marsh Ecosystems of Northern and Central California California clapper rail Suaeda californica Cirsium hydrophilum Chloropyron molle Salt marsh harvest mouse (Rallus longirostris (California sea-blite) var. hydrophilum ssp. molle (Reithrodontomys obsoletus) (Suisun thistle) (soft bird’s-beak) raviventris) Volume II Appendices Tidal marsh at China Camp State Park. VII. APPENDICES Appendix A Species referred to in this recovery plan……………....…………………….3 Appendix B Recovery Priority Ranking System for Endangered and Threatened Species..........................................................................................................11 Appendix C Species of Concern or Regional Conservation Significance in Tidal Marsh Ecosystems of Northern and Central California….......................................13 Appendix D Agencies, organizations, and websites involved with tidal marsh Recovery.................................................................................................... 189 Appendix E Environmental contaminants in San Francisco Bay...................................193 Appendix F Population Persistence Modeling for Recovery Plan for Tidal Marsh Ecosystems of Northern and Central California with Intial Application to California clapper rail …............................................................................209 Appendix G Glossary……………......................................................................………229 Appendix H Summary of Major Public Comments and Service
    [Show full text]
  • National List of Vascular Plant Species That Occur in Wetlands 1996
    National List of Vascular Plant Species that Occur in Wetlands: 1996 National Summary Indicator by Region and Subregion Scientific Name/ North North Central South Inter- National Subregion Northeast Southeast Central Plains Plains Plains Southwest mountain Northwest California Alaska Caribbean Hawaii Indicator Range Abies amabilis (Dougl. ex Loud.) Dougl. ex Forbes FACU FACU UPL UPL,FACU Abies balsamea (L.) P. Mill. FAC FACW FAC,FACW Abies concolor (Gord. & Glend.) Lindl. ex Hildebr. NI NI NI NI NI UPL UPL Abies fraseri (Pursh) Poir. FACU FACU FACU Abies grandis (Dougl. ex D. Don) Lindl. FACU-* NI FACU-* Abies lasiocarpa (Hook.) Nutt. NI NI FACU+ FACU- FACU FAC UPL UPL,FAC Abies magnifica A. Murr. NI UPL NI FACU UPL,FACU Abildgaardia ovata (Burm. f.) Kral FACW+ FAC+ FAC+,FACW+ Abutilon theophrasti Medik. UPL FACU- FACU- UPL UPL UPL UPL UPL NI NI UPL,FACU- Acacia choriophylla Benth. FAC* FAC* Acacia farnesiana (L.) Willd. FACU NI NI* NI NI FACU Acacia greggii Gray UPL UPL FACU FACU UPL,FACU Acacia macracantha Humb. & Bonpl. ex Willd. NI FAC FAC Acacia minuta ssp. minuta (M.E. Jones) Beauchamp FACU FACU Acaena exigua Gray OBL OBL Acalypha bisetosa Bertol. ex Spreng. FACW FACW Acalypha virginica L. FACU- FACU- FAC- FACU- FACU- FACU* FACU-,FAC- Acalypha virginica var. rhomboidea (Raf.) Cooperrider FACU- FAC- FACU FACU- FACU- FACU* FACU-,FAC- Acanthocereus tetragonus (L.) Humm. FAC* NI NI FAC* Acanthomintha ilicifolia (Gray) Gray FAC* FAC* Acanthus ebracteatus Vahl OBL OBL Acer circinatum Pursh FAC- FAC NI FAC-,FAC Acer glabrum Torr. FAC FAC FAC FACU FACU* FAC FACU FACU*,FAC Acer grandidentatum Nutt.
    [Show full text]
  • Plants and Gall Hosts of the Tirimbina Biological Reserve, Sarapiqui, Costa Rica: Combining Field Sampling with Herbarium Records
    Plants and gall hosts of the Tirimbina Biological Reserve, Sarapiqui, Costa Rica: Combining field sampling with herbarium records Juan Manuel Ley-López1, José González2 & Paul E. Hanson3* 1. Departamento Académico, Reserva Biológica Tirimbina. Sarapiquí, Heredia, Costa Rica; [email protected] 2. Independent consultant, Costa Rica; [email protected] 3. Escuela de Biología, Universidad de Costa Rica; San Pedro, 11501-2060 San José, Costa Rica; [email protected] * Correspondence Received 03-X-2018. Corrected 10-I-2018. Accepted 24-I-2019. Abstract: There has been an increasing number of inventories of gall-inducing arthropods in the Neotropics. Nonetheless, very few inventories have been carried out in areas where the flora is well documented, and records of galls from herbaria and sites outside the study area have seldom been utilized. In this study we provide a checklist of the native vascular plants of a 345 ha forest reserve in the Caribbean lowlands of Costa Rica and document which of these plants were found to harbor galls. The gall surveys were carried out between November 2013 and December 2016. We also cross-checked our plant list with the previous gall records from elsewhere in the country and searched for galls on herbarium specimens of dicots reported from the reserve. In total, we recorded 143 families and 1174 plant species, of which 401 were hosts of galls. Plant hosts of galls were found in the following non-mutually exclusive categories: 209 in our field sampling, 257 from previous records, and 158 in herbarium specimens. Of our field records of galls, 77 were new for the country, 77 were also found in the herbarium and 110 had been previously recorded in the country.
    [Show full text]
  • BROWN ROOT ROT in ALFALFA IDENTIFIED in NORTHWEST MINNESOTA Reprinted with Permission from Philip Glogoza, Editor, Cropping Issues in Northwest Minnesota
    Clippings – June 6, 2005 BROWN ROOT ROT IN ALFALFA IDENTIFIED IN NORTHWEST MINNESOTA Reprinted with permission from Philip Glogoza, Editor, Cropping Issues in Northwest Minnesota. By Deborah Samac, USDA-ARS - U of M Plant Pathologist; Charla Hollingsworth, U of M Plant Pathologist; Paul Peterson, U of M Agronomist; Fred Gray, U of Wyoming Plant Pathologist; Hans Kandel, Regional Extension Educator Brown Root Rot (BRR) was first described in North America on yellow sweetclover (Melilotus) and alfalfa in Canada in 1933. It can be a serious disease of sweetclover in Canada. Brown root rot is caused by a cold-loving fungus, Phoma sclerotioides. The pathogen can also infect other forage legume crops including alsike clover, bird’s-foot trefoil, sainfoin and non-leguminous plants such as grasses. The fungus produces survival structures (pycnidia) that infest soil and may function to spread the disease. It is thought to be a native of the Canadian prairie. Symptoms on diseased plants consist of dark colored lesions of the tap and lateral roots. Initial lesions are often localized but can spread and eventually girdle the roots of susceptible plant hosts and cause the tissues to rot. Nitrogen-fixing bacteria nodules can also be rotted. If lesions occur on the upper tap root there is less healthy tissue for storage of carbohydrates, and diseased plants are more susceptible to winterkill. BRR lesions will worsen with each winter until the plant is killed. Dead plants are noticed in the spring and are considered ‘winterkilled’ since they were alive the preceding fall. Distribution of BRR in North America includes Alaska, the Yukon, the Northwest Territories, the four western provinces of Canada, and Nova Scotia.
    [Show full text]
  • (Grau, Craig) Grau Brown Root Rot.Ppt [Read-Only]
    InfluenceInfluence ofof AlfalfaAlfalfa BrownBrown RootRoot RotRot onon WinterkillWinterkill Acknowledge contributions of Fred Gray, University of Wyoming History 1933- 1st reported on sweet clover in Canada 1984 – widespread on alfalfa in the Peace River Valley of Alberta 1996 – 1st reported on alfalfa in the U.S. in Wyoming 2003 – reported in Idaho, New York, Minnesota and Wisconsin Host Range (J.G.N Davidson) Alfalfa Red Clover Alsike Clover Sainfoin Bird’s-Foot Trefoil Sweet Clover Distribution In North America Indigenous Fungus CANADA USA Currently known distribution in the U.S. Idaho, Minnesota, Montana, New York, Wisconsin, Wyoming Diagnosis Plant Symptoms Diseased Severe Winterkill Dead Close up of dead and dying plants Fred Gray Plants removed showing severe root rot Brown Root Rot Wisconsin - 2003 Greg Andrews Brown root rot?; Marshfield 1978 Winter Kill in Wisconsin - 2003 Greg Andrews Greg Andrews Greg Andrews •Surviving plants may have lesions on tap root •Frequently diagnosed as feeding scars caused by clover root curculio Brown Root Rot Epidemiology • Infection of alfalfa roots: – late fall to early spring when plants are dormant. • Pathogenic activity: – Dormant root tissues – Pathogen ceases growth when plant breaks dormancy • Symptoms: – Brown rotted roots observed in spring – Plant mortality during winter – Surviving infected plants • Die later in spring • Survive summer but die the following winter Brown Root Rot Pathogen Survey • Fields at least 2 years old • 5-10 plants from each location • 6 inches of the tap root • Variety name • Soil removed from the roots • Place roots from each field in a separate plastic bag and seal • Either send immediately or freeze and send to: Deborah A.
    [Show full text]
  • A Polyphasic Approach to Characterise Two Novel Species of Phoma (Didymellaceae) from China
    Phytotaxa 197 (4): 267–281 ISSN 1179-3155 (print edition) www.mapress.com/phytotaxa/ PHYTOTAXA Copyright © 2015 Magnolia Press Article ISSN 1179-3163 (online edition) http://dx.doi.org/10.11646/phytotaxa.197.4.4 A polyphasic approach to characterise two novel species of Phoma (Didymellaceae) from China QIAN CHEN1,2, KE ZHANG2, GUOZHEN ZHANG1* & LEI CAI2* 1College of Agriculture and Biotechnology, China Agricultural University, No. 2 West Yuanmingyuan Rd, Haidian District, Beijing 100193, P.R. China 2State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, West Beichen Rd, Chaoyang District, Beijing 100101, P. R. China Corresponding authors: Lei Cai: [email protected]; Guozhen Zhang: [email protected]. Abstract Phoma odoratissimi sp. nov. on Viburnum odoratissimum and Syringa oblate, and Phoma segeticola sp. nov. on Cirsium segetum from China are introduced and described, employing a polyphasic approach characterising morphological charac- teristics, host association and phylogeny. Both species are the first records of Phoma species on their respective hosts. Multi- locus phylogenetic tree was inferred using combined sequences of the internal transcribed spacer regions 1 & 2 and 5.8S nrDNA (ITS), and partial large subunit 28S nrDNA region (LSU), β-tubulin (TUB) region and RNA polymerase II (RPB2) region. The two new species clustered in two separate and distinct lineages, and are distinct from their allied species. Key words: Karst, morphology, plant pathogen, phylogeny, taxonomy INTRODUCTION The coelomycetous genus Phoma Sacc. emend. Boerema & G.J. Bollen is omnipresent in the environments and consists of pathogens, opportunists and several saprobic species from a wide range of substrates (Aveskamp et al.
    [Show full text]