26 results
Interrelations of Tillage and Weed Control for Soybean (Glycine max) Production
- Charles L. Webber III, Harold D. Kerr, Maurice R. Gebhardt
-
- Journal:
- Weed Science / Volume 35 / Issue 6 / November 1987
- Published online by Cambridge University Press:
- 12 June 2017, pp. 830-836
-
- Article
- Export citation
-
A 3-yr (1982, 1983, and 1984) study was conducted to determine the relationship between tillage and six weed control treatments for soybean [Glycine max (L.) Merr. ‘Williams 79′] production on silt loam (Udollic and Mollic Ochraqualfs). Conventional tillage consisted of spring moldboard plowing and secondary tillage with a combination tool just before planting. No-tillage consisted of a foliar application of glyphosate [N-(phosphonomethyl)glycine] at the time of planting. Weed control treatments included combinations of no weed control with and without soybean plants, preemergence herbicide application only, postemergence herbicide application only, and combined preemergence and postemergence applications with and without additional handweeding. In 1982, a year of above-normal seasonal rainfall, conventional tillage had significantly greater soybean grain yields than no-tillage for all weed control treatments except the preemergence-only treatment. Yields within tillage systems and between weed control treatments in 1982 were not significantly different because adequate rainfall reduced the effect of weed competition for soil moisture. Soybean seed yields in 1983 and 1984 in no-tillage were equal to or significantly greater than those of conventional tillage. No-tillage treatments had greater soil moisture conservation and soil moisture availability resulting in less plant water stress during podfilling in periods of drought in 1983 and 1984. In all 3 yr, conventional tillage had significantly greater early weed growth than no-tillage in the treatments with and without soybean plants where no preemergence or postemergence herbicides were used. Comparing treatments with and without soybean plants indicated an average increase of 36 and 38% weed control for no-tillage and conventional tillage, respectively.
Selective Grass Control with Siduron
- Harold D. Kerr
-
- Journal:
- Weed Science / Volume 17 / Issue 2 / April 1969
- Published online by Cambridge University Press:
- 12 June 2017, pp. 181-186
-
- Article
- Export citation
-
Doses of 1-(2-methylcyclohexyl)-3-phenylurea (siduron), sprayed on seeds of several forage, turf, and weed grasses on the soil surface killed some weed grasses without injuring many desirable grasses. Seeds of tolerant grasses mixed with an excess of a dry siduron formulation and stored for 12 months germinated without injury, but crabgrass (Digitaria sanguinalis (L) Scop.) and barnyardgrass (Echinochloa crusgalli (L.)) were killed during germination. Siduron eliminated seedling weed grasses from seedling perennial turfgrasses when applied on the soil surface or incorporated in the soil just before planting. When applied as a coating on seeds of turfgrasses at planting time, siduron controlled some annual weed grasses without injurying the turfgrasses. Herbicidal action appeared to be localized mainly in the grass roots and differed from that of 1,1-dimethyl-3-phenylurea (fenuron) and isopropyl carbanilate (propham) applied at equimolar doses.
Herbicides with Crop Competition Replace Endophytic Tall Fescue (Festuca arundinacea)
- Ali M. Bagegni, Harold D. Kerr, David A. Sleper
-
- Journal:
- Weed Technology / Volume 8 / Issue 4 / December 1994
- Published online by Cambridge University Press:
- 12 June 2017, pp. 689-695
-
- Article
- Export citation
-
Herbicides and interim summer crop treatments were studied in 1984 to 1987 to replace fungal endophyte-infected with endophyte-free tall fescue or red clover to improve forage quality. Foliar glyphosate or paraquat were applied in spring across interim crops with PRE herbicides. The interim crops, grain sorghum with atrazine, sorghum-sudangrass hybrid with metribuzin, or soybean with imazaquin, were each applied as confounded treatments across glyphosate or paraquat. Within an interim crop system, a follow-up glyphosate treatment was serially applied the next fall or spring. Then either red clover or endophyte-free tall fescue was spring drilled within the fall or spring glyphosate follow-up treatments. Glyphosate controlled old tall fescue better than paraquat, and improved the stand of the endophyte-free tall fescue. Control of tall fescue was 97% from 1.7 kg ai/ha glyphosate. Glyphosate reduced the endophyte from a 77% original infection level to 20% over all interim crops after drilling the endophyte-free tall fescue. Among interim crops, grain sorghum or the sorghum-sudangrass hybrid was more competitive than soybean with the uncontrolled tall fescue. Replacement with endophyte-free tall fescue was best in grain sorghum or sorghum-sudangrass hybrid stubble the next spring. Grain sorghum or sorghum-sudangrass hybrid following foliar glyphosate or paraquat treatment of endophyte-infected tall fescue reduced endophyte infection level in tall fescue to 28%. A follow-up fall treatment with glyphosate controlled tall fescue better than the spring retreatment and red clover and endophyte-free tall fescue were established better from fall retreated glyphosate. Red clover was easily established by drilling into the sod after treating endophyte-infected tall fescue with either glyphosate or paraquat.
Lipid Metabolism in Grain Sorghum (Sorghum bicolor) Treated with Alachlor plus Flurazole
- Michele R. Warmund, Harold D. Kerr, Elroy J. Peters
-
- Journal:
- Weed Science / Volume 33 / Issue 1 / January 1985
- Published online by Cambridge University Press:
- 12 June 2017, pp. 25-28
-
- Article
- Export citation
-
Lipid metabolism and other biochemical responses to alachlor [2-chloro-2’,6’-dimethyl-N-(methoxymethyl) acetanilide] and the protectant flurazole [2-chloro-4-(trifluoromethyl)-5-thiazolecarboxylic acid, (phenylmethyl ester)] in germinated grain sorghum [Sorghum bicolor (L.) Moench. ‘MFA GS 301’] were studied. Treatments included flurazole, applied to grain sorghum seed at 2.5 g ai/kg, alachlor at 8.2 × 10−6 M, and alachlor plus flurazole at these rates. Treatments did not alter total lipid synthesis or fatty acid composition. Seeds that germinated for 48 h in media containing alachlor or alachlor plus flurazole had a greater triglyceride:phospholipid ratio than those treated with flurazole or the control seeds, indicating that alachlor plus flurazole retarded catabolism of storage lipid. Oxygen consumption of seeds was reduced after the herbicide plus protectant treatment. Oxidation of 14C-pyruvate to CO2 was inhibited by alachlor and alachlor plus flurazole treatments, but not by flurazole alone.
Contributors
-
- By Rose Teteki Abbey, K. C. Abraham, David Tuesday Adamo, LeRoy H. Aden, Efrain Agosto, Victor Aguilan, Gillian T. W. Ahlgren, Charanjit Kaur AjitSingh, Dorothy B E A Akoto, Giuseppe Alberigo, Daniel E. Albrecht, Ruth Albrecht, Daniel O. Aleshire, Urs Altermatt, Anand Amaladass, Michael Amaladoss, James N. Amanze, Lesley G. Anderson, Thomas C. Anderson, Victor Anderson, Hope S. Antone, María Pilar Aquino, Paula Arai, Victorio Araya Guillén, S. Wesley Ariarajah, Ellen T. Armour, Brett Gregory Armstrong, Atsuhiro Asano, Naim Stifan Ateek, Mahmoud Ayoub, John Alembillah Azumah, Mercedes L. García Bachmann, Irena Backus, J. Wayne Baker, Mieke Bal, Lewis V. Baldwin, William Barbieri, António Barbosa da Silva, David Basinger, Bolaji Olukemi Bateye, Oswald Bayer, Daniel H. Bays, Rosalie Beck, Nancy Elizabeth Bedford, Guy-Thomas Bedouelle, Chorbishop Seely Beggiani, Wolfgang Behringer, Christopher M. Bellitto, Byard Bennett, Harold V. Bennett, Teresa Berger, Miguel A. Bernad, Henley Bernard, Alan E. Bernstein, Jon L. Berquist, Johannes Beutler, Ana María Bidegain, Matthew P. Binkewicz, Jennifer Bird, Joseph Blenkinsopp, Dmytro Bondarenko, Paulo Bonfatti, Riet en Pim Bons-Storm, Jessica A. Boon, Marcus J. Borg, Mark Bosco, Peter C. Bouteneff, François Bovon, William D. Bowman, Paul S. Boyer, David Brakke, Richard E. Brantley, Marcus Braybrooke, Ian Breward, Ênio José da Costa Brito, Jewel Spears Brooker, Johannes Brosseder, Nicholas Canfield Read Brown, Robert F. Brown, Pamela K. Brubaker, Walter Brueggemann, Bishop Colin O. Buchanan, Stanley M. Burgess, Amy Nelson Burnett, J. Patout Burns, David B. Burrell, David Buttrick, James P. Byrd, Lavinia Byrne, Gerado Caetano, Marcos Caldas, Alkiviadis Calivas, William J. Callahan, Salvatore Calomino, Euan K. Cameron, William S. Campbell, Marcelo Ayres Camurça, Daniel F. Caner, Paul E. Capetz, Carlos F. Cardoza-Orlandi, Patrick W. Carey, Barbara Carvill, Hal Cauthron, Subhadra Mitra Channa, Mark D. Chapman, James H. Charlesworth, Kenneth R. Chase, Chen Zemin, Luciano Chianeque, Philip Chia Phin Yin, Francisca H. Chimhanda, Daniel Chiquete, John T. Chirban, Soobin Choi, Robert Choquette, Mita Choudhury, Gerald Christianson, John Chryssavgis, Sejong Chun, Esther Chung-Kim, Charles M. A. Clark, Elizabeth A. Clark, Sathianathan Clarke, Fred Cloud, John B. Cobb, W. Owen Cole, John A Coleman, John J. Collins, Sylvia Collins-Mayo, Paul K. Conkin, Beth A. Conklin, Sean Connolly, Demetrios J. Constantelos, Michael A. Conway, Paula M. Cooey, Austin Cooper, Michael L. Cooper-White, Pamela Cooper-White, L. William Countryman, Sérgio Coutinho, Pamela Couture, Shannon Craigo-Snell, James L. Crenshaw, David Crowner, Humberto Horacio Cucchetti, Lawrence S. Cunningham, Elizabeth Mason Currier, Emmanuel Cutrone, Mary L. Daniel, David D. Daniels, Robert Darden, Rolf Darge, Isaiah Dau, Jeffry C. Davis, Jane Dawson, Valentin Dedji, John W. de Gruchy, Paul DeHart, Wendy J. Deichmann Edwards, Miguel A. De La Torre, George E. Demacopoulos, Thomas de Mayo, Leah DeVun, Beatriz de Vasconcellos Dias, Dennis C. Dickerson, John M. Dillon, Luis Miguel Donatello, Igor Dorfmann-Lazarev, Susanna Drake, Jonathan A. Draper, N. Dreher Martin, Otto Dreydoppel, Angelyn Dries, A. J. Droge, Francis X. D'Sa, Marilyn Dunn, Nicole Wilkinson Duran, Rifaat Ebied, Mark J. Edwards, William H. Edwards, Leonard H. Ehrlich, Nancy L. Eiesland, Martin Elbel, J. Harold Ellens, Stephen Ellingson, Marvin M. Ellison, Robert Ellsberg, Jean Bethke Elshtain, Eldon Jay Epp, Peter C. Erb, Tassilo Erhardt, Maria Erling, Noel Leo Erskine, Gillian R. Evans, Virginia Fabella, Michael A. Fahey, Edward Farley, Margaret A. Farley, Wendy Farley, Robert Fastiggi, Seena Fazel, Duncan S. Ferguson, Helwar Figueroa, Paul Corby Finney, Kyriaki Karidoyanes FitzGerald, Thomas E. FitzGerald, John R. Fitzmier, Marie Therese Flanagan, Sabina Flanagan, Claude Flipo, Ronald B. Flowers, Carole Fontaine, David Ford, Mary Ford, Stephanie A. Ford, Jim Forest, William Franke, Robert M. Franklin, Ruth Franzén, Edward H. Friedman, Samuel Frouisou, Lorelei F. Fuchs, Jojo M. Fung, Inger Furseth, Richard R. Gaillardetz, Brandon Gallaher, China Galland, Mark Galli, Ismael García, Tharscisse Gatwa, Jean-Marie Gaudeul, Luis María Gavilanes del Castillo, Pavel L. Gavrilyuk, Volney P. Gay, Metropolitan Athanasios Geevargis, Kondothra M. George, Mary Gerhart, Simon Gikandi, Maurice Gilbert, Michael J. Gillgannon, Verónica Giménez Beliveau, Terryl Givens, Beth Glazier-McDonald, Philip Gleason, Menghun Goh, Brian Golding, Bishop Hilario M. Gomez, Michelle A. Gonzalez, Donald K. Gorrell, Roy Gottfried, Tamara Grdzelidze, Joel B. Green, Niels Henrik Gregersen, Cristina Grenholm, Herbert Griffiths, Eric W. Gritsch, Erich S. Gruen, Christoffer H. Grundmann, Paul H. Gundani, Jon P. Gunnemann, Petre Guran, Vidar L. Haanes, Jeremiah M. Hackett, Getatchew Haile, Douglas John Hall, Nicholas Hammond, Daphne Hampson, Jehu J. Hanciles, Barry Hankins, Jennifer Haraguchi, Stanley S. Harakas, Anthony John Harding, Conrad L. Harkins, J. William Harmless, Marjory Harper, Amir Harrak, Joel F. Harrington, Mark W. Harris, Susan Ashbrook Harvey, Van A. Harvey, R. Chris Hassel, Jione Havea, Daniel Hawk, Diana L. Hayes, Leslie Hayes, Priscilla Hayner, S. Mark Heim, Simo Heininen, Richard P. Heitzenrater, Eila Helander, David Hempton, Scott H. Hendrix, Jan-Olav Henriksen, Gina Hens-Piazza, Carter Heyward, Nicholas J. Higham, David Hilliard, Norman A. Hjelm, Peter C. Hodgson, Arthur Holder, M. Jan Holton, Dwight N. Hopkins, Ronnie Po-chia Hsia, Po-Ho Huang, James Hudnut-Beumler, Jennifer S. Hughes, Leonard M. Hummel, Mary E. Hunt, Laennec Hurbon, Mark Hutchinson, Susan E. Hylen, Mary Beth Ingham, H. Larry Ingle, Dale T. Irvin, Jon Isaak, Paul John Isaak, Ada María Isasi-Díaz, Hans Raun Iversen, Margaret C. Jacob, Arthur James, Maria Jansdotter-Samuelsson, David Jasper, Werner G. Jeanrond, Renée Jeffery, David Lyle Jeffrey, Theodore W. Jennings, David H. Jensen, Robin Margaret Jensen, David Jobling, Dale A. Johnson, Elizabeth A. Johnson, Maxwell E. Johnson, Sarah Johnson, Mark D. Johnston, F. Stanley Jones, James William Jones, John R. Jones, Alissa Jones Nelson, Inge Jonsson, Jan Joosten, Elizabeth Judd, Mulambya Peggy Kabonde, Robert Kaggwa, Sylvester Kahakwa, Isaac Kalimi, Ogbu U. Kalu, Eunice Kamaara, Wayne C. Kannaday, Musimbi Kanyoro, Veli-Matti Kärkkäinen, Frank Kaufmann, Léon Nguapitshi Kayongo, Richard Kearney, Alice A. Keefe, Ralph Keen, Catherine Keller, Anthony J. Kelly, Karen Kennelly, Kathi Lynn Kern, Fergus Kerr, Edward Kessler, George Kilcourse, Heup Young Kim, Kim Sung-Hae, Kim Yong-Bock, Kim Yung Suk, Richard King, Thomas M. King, Robert M. Kingdon, Ross Kinsler, Hans G. Kippenberg, Cheryl A. Kirk-Duggan, Clifton Kirkpatrick, Leonid Kishkovsky, Nadieszda Kizenko, Jeffrey Klaiber, Hans-Josef Klauck, Sidney Knight, Samuel Kobia, Robert Kolb, Karla Ann Koll, Heikki Kotila, Donald Kraybill, Philip D. W. Krey, Yves Krumenacker, Jeffrey Kah-Jin Kuan, Simanga R. Kumalo, Peter Kuzmic, Simon Shui-Man Kwan, Kwok Pui-lan, André LaCocque, Stephen E. Lahey, John Tsz Pang Lai, Emiel Lamberts, Armando Lampe, Craig Lampe, Beverly J. Lanzetta, Eve LaPlante, Lizette Larson-Miller, Ariel Bybee Laughton, Leonard Lawlor, Bentley Layton, Robin A. Leaver, Karen Lebacqz, Archie Chi Chung Lee, Marilyn J. Legge, Hervé LeGrand, D. L. LeMahieu, Raymond Lemieux, Bill J. Leonard, Ellen M. Leonard, Outi Leppä, Jean Lesaulnier, Nantawan Boonprasat Lewis, Henrietta Leyser, Alexei Lidov, Bernard Lightman, Paul Chang-Ha Lim, Carter Lindberg, Mark R. Lindsay, James R. Linville, James C. Livingston, Ann Loades, David Loades, Jean-Claude Loba-Mkole, Lo Lung Kwong, Wati Longchar, Eleazar López, David W. Lotz, Andrew Louth, Robin W. Lovin, William Luis, Frank D. Macchia, Diarmaid N. J. MacCulloch, Kirk R. MacGregor, Marjory A. MacLean, Donald MacLeod, Tomas S. Maddela, Inge Mager, Laurenti Magesa, David G. Maillu, Fortunato Mallimaci, Philip Mamalakis, Kä Mana, Ukachukwu Chris Manus, Herbert Robinson Marbury, Reuel Norman Marigza, Jacqueline Mariña, Antti Marjanen, Luiz C. L. Marques, Madipoane Masenya (ngwan'a Mphahlele), Caleb J. D. Maskell, Steve Mason, Thomas Massaro, Fernando Matamoros Ponce, András Máté-Tóth, Odair Pedroso Mateus, Dinis Matsolo, Fumitaka Matsuoka, John D'Arcy May, Yelena Mazour-Matusevich, Theodore Mbazumutima, John S. McClure, Christian McConnell, Lee Martin McDonald, Gary B. McGee, Thomas McGowan, Alister E. McGrath, Richard J. McGregor, John A. McGuckin, Maud Burnett McInerney, Elsie Anne McKee, Mary B. McKinley, James F. McMillan, Ernan McMullin, Kathleen E. McVey, M. Douglas Meeks, Monica Jyotsna Melanchthon, Ilie Melniciuc-Puica, Everett Mendoza, Raymond A. Mentzer, William W. Menzies, Ina Merdjanova, Franziska Metzger, Constant J. Mews, Marvin Meyer, Carol Meyers, Vasile Mihoc, Gunner Bjerg Mikkelsen, Maria Inêz de Castro Millen, Clyde Lee Miller, Bonnie J. Miller-McLemore, Alexander Mirkovic, Paul Misner, Nozomu Miyahira, R. W. L. Moberly, Gerald Moede, Aloo Osotsi Mojola, Sunanda Mongia, Rebeca Montemayor, James Moore, Roger E. Moore, Craig E. Morrison O.Carm, Jeffry H. Morrison, Keith Morrison, Wilson J. Moses, Tefetso Henry Mothibe, Mokgethi Motlhabi, Fulata Moyo, Henry Mugabe, Jesse Ndwiga Kanyua Mugambi, Peggy Mulambya-Kabonde, Robert Bruce Mullin, Pamela Mullins Reaves, Saskia Murk Jansen, Heleen L. Murre-Van den Berg, Augustine Musopole, Isaac M. T. Mwase, Philomena Mwaura, Cecilia Nahnfeldt, Anne Nasimiyu Wasike, Carmiña Navia Velasco, Thulani Ndlazi, Alexander Negrov, James B. Nelson, David G. Newcombe, Carol Newsom, Helen J. Nicholson, George W. E. Nickelsburg, Tatyana Nikolskaya, Damayanthi M. A. Niles, Bertil Nilsson, Nyambura Njoroge, Fidelis Nkomazana, Mary Beth Norton, Christian Nottmeier, Sonene Nyawo, Anthère Nzabatsinda, Edward T. Oakes, Gerald O'Collins, Daniel O'Connell, David W. Odell-Scott, Mercy Amba Oduyoye, Kathleen O'Grady, Oyeronke Olajubu, Thomas O'Loughlin, Dennis T. Olson, J. Steven O'Malley, Cephas N. Omenyo, Muriel Orevillo-Montenegro, César Augusto Ornellas Ramos, Agbonkhianmeghe E. Orobator, Kenan B. Osborne, Carolyn Osiek, Javier Otaola Montagne, Douglas F. Ottati, Anna May Say Pa, Irina Paert, Jerry G. Pankhurst, Aristotle Papanikolaou, Samuele F. Pardini, Stefano Parenti, Peter Paris, Sung Bae Park, Cristián G. Parker, Raquel Pastor, Joseph Pathrapankal, Daniel Patte, W. Brown Patterson, Clive Pearson, Keith F. Pecklers, Nancy Cardoso Pereira, David Horace Perkins, Pheme Perkins, Edward N. Peters, Rebecca Todd Peters, Bishop Yeznik Petrossian, Raymond Pfister, Peter C. Phan, Isabel Apawo Phiri, William S. F. Pickering, Derrick G. Pitard, William Elvis Plata, Zlatko Plese, John Plummer, James Newton Poling, Ronald Popivchak, Andrew Porter, Ute Possekel, James M. Powell, Enos Das Pradhan, Devadasan Premnath, Jaime Adrían Prieto Valladares, Anne Primavesi, Randall Prior, María Alicia Puente Lutteroth, Eduardo Guzmão Quadros, Albert Rabil, Laurent William Ramambason, Apolonio M. Ranche, Vololona Randriamanantena Andriamitandrina, Lawrence R. Rast, Paul L. Redditt, Adele Reinhartz, Rolf Rendtorff, Pål Repstad, James N. Rhodes, John K. Riches, Joerg Rieger, Sharon H. Ringe, Sandra Rios, Tyler Roberts, David M. Robinson, James M. Robinson, Joanne Maguire Robinson, Richard A. H. Robinson, Roy R. Robson, Jack B. Rogers, Maria Roginska, Sidney Rooy, Rev. Garnett Roper, Maria José Fontelas Rosado-Nunes, Andrew C. Ross, Stefan Rossbach, François Rossier, John D. Roth, John K. Roth, Phillip Rothwell, Richard E. Rubenstein, Rosemary Radford Ruether, Markku Ruotsila, John E. Rybolt, Risto Saarinen, John Saillant, Juan Sanchez, Wagner Lopes Sanchez, Hugo N. Santos, Gerhard Sauter, Gloria L. Schaab, Sandra M. Schneiders, Quentin J. Schultze, Fernando F. Segovia, Turid Karlsen Seim, Carsten Selch Jensen, Alan P. F. Sell, Frank C. Senn, Kent Davis Sensenig, Damían Setton, Bal Krishna Sharma, Carolyn J. Sharp, Thomas Sheehan, N. Gerald Shenk, Christian Sheppard, Charles Sherlock, Tabona Shoko, Walter B. Shurden, Marguerite Shuster, B. Mark Sietsema, Batara Sihombing, Neil Silberman, Clodomiro Siller, Samuel Silva-Gotay, Heikki Silvet, John K. Simmons, Hagith Sivan, James C. Skedros, Abraham Smith, Ashley A. Smith, Ted A. Smith, Daud Soesilo, Pia Søltoft, Choan-Seng (C. S.) Song, Kathryn Spink, Bryan Spinks, Eric O. Springsted, Nicolas Standaert, Brian Stanley, Glen H. Stassen, Karel Steenbrink, Stephen J. Stein, Andrea Sterk, Gregory E. Sterling, Columba Stewart, Jacques Stewart, Robert B. Stewart, Cynthia Stokes Brown, Ken Stone, Anne Stott, Elizabeth Stuart, Monya Stubbs, Marjorie Hewitt Suchocki, David Kwang-sun Suh, Scott W. Sunquist, Keith Suter, Douglas Sweeney, Charles H. Talbert, Shawqi N. Talia, Elsa Tamez, Joseph B. Tamney, Jonathan Y. Tan, Yak-Hwee Tan, Kathryn Tanner, Feiya Tao, Elizabeth S. Tapia, Aquiline Tarimo, Claire Taylor, Mark Lewis Taylor, Bishop Abba Samuel Wolde Tekestebirhan, Eugene TeSelle, M. Thomas Thangaraj, David R. Thomas, Andrew Thornley, Scott Thumma, Marcelo Timotheo da Costa, George E. “Tink” Tinker, Ola Tjørhom, Karen Jo Torjesen, Iain R. Torrance, Fernando Torres-Londoño, Archbishop Demetrios [Trakatellis], Marit Trelstad, Christine Trevett, Phyllis Trible, Johannes Tromp, Paul Turner, Robert G. Tuttle, Archbishop Desmond Tutu, Peter Tyler, Anders Tyrberg, Justin Ukpong, Javier Ulloa, Camillus Umoh, Kristi Upson-Saia, Martina Urban, Monica Uribe, Elochukwu Eugene Uzukwu, Richard Vaggione, Gabriel Vahanian, Paul Valliere, T. J. Van Bavel, Steven Vanderputten, Peter Van der Veer, Huub Van de Sandt, Louis Van Tongeren, Luke A. Veronis, Noel Villalba, Ramón Vinke, Tim Vivian, David Voas, Elena Volkova, Katharina von Kellenbach, Elina Vuola, Timothy Wadkins, Elaine M. Wainwright, Randi Jones Walker, Dewey D. Wallace, Jerry Walls, Michael J. Walsh, Philip Walters, Janet Walton, Jonathan L. Walton, Wang Xiaochao, Patricia A. Ward, David Harrington Watt, Herold D. Weiss, Laurence L. Welborn, Sharon D. Welch, Timothy Wengert, Traci C. West, Merold Westphal, David Wetherell, Barbara Wheeler, Carolinne White, Jean-Paul Wiest, Frans Wijsen, Terry L. Wilder, Felix Wilfred, Rebecca Wilkin, Daniel H. Williams, D. Newell Williams, Michael A. Williams, Vincent L. Wimbush, Gabriele Winkler, Anders Winroth, Lauri Emílio Wirth, James A. Wiseman, Ebba Witt-Brattström, Teofil Wojciechowski, John Wolffe, Kenman L. Wong, Wong Wai Ching, Linda Woodhead, Wendy M. Wright, Rose Wu, Keith E. Yandell, Gale A. Yee, Viktor Yelensky, Yeo Khiok-Khng, Gustav K. K. Yeung, Angela Yiu, Amos Yong, Yong Ting Jin, You Bin, Youhanna Nessim Youssef, Eliana Yunes, Robert Michael Zaller, Valarie H. Ziegler, Barbara Brown Zikmund, Joyce Ann Zimmerman, Aurora Zlotnik, Zhuo Xinping
- Edited by Daniel Patte, Vanderbilt University, Tennessee
-
- Book:
- The Cambridge Dictionary of Christianity
- Published online:
- 05 August 2012
- Print publication:
- 20 September 2010, pp xi-xliv
-
- Chapter
- Export citation
Characteristics and Control of Camelthorn
- Harold D. Kerr, W. C. Robocker, T. J. Muzik
-
- Article
- Export citation
-
Alhagi pseudalhagi (Bieb.) Desv. (camelthorn) was in troduced into California about 1915, and into the State of Washington about 1935. Here, it was declared a primary noxious weed in 1955. Seeds scarified with sulfuric acid germinated 90–98 per cent at 25 C. Some seeds were viable after burial one year in soil or submergence for 9 months in running water. Seedlings in the infested area were found only in bovine manure. Tests indicated scarification and transportation of seed in the rumen could accelerate the spread of camelthorn. Lack of favorable moisture and soil temperature at the same time prevented establishment of camelthorn planted at several locations. Eradication resulted from treatment with 2,3,6-trichlorobenzoic acid (2,3,6-TBA). Three repeated sprays with esters of 2,4-dichlorophenoxyacetic acid (2,4-D) within a growing season gave control; however, control did not appear to be directly related to depletion of reserve foods in the roots.
Characteristics and Control of Swainsonpea
- W. C. Robocker, Harold D. Kerr, V. F. Bruns
-
- Article
- Export citation
-
Swainsona salsula is an unpalatable legume of Asiatic origin which spreads by seed and lateral roots and has become a problem in some poorly drained, marshy, or saline areas of several western states. Its growth characteristics indicate a high potential for establishment along stream banks, irrigation canals, wasteways, pastures, and meadows with high water tables and other poorly drained areas. Its aggressiveness results in its dominance on such areas. 2-(2,4,5-trichlorophenoxy)propionic acid (silvex), 2,4-dichlorophenoxyacetic acid, (2,4-D), or 2,4,5-trichlorophenoxyacetic acid (2,4,5-T) applied at 2 lb/A for 2 or more years in succession controlled swainsonpea satisfactorily on cropped land. 2,3,6-trichlorobenzoic acid (2,3,6-TBA) was also effective.
LIST OF CONTRIBUTORS
- Franklyn Hugh Perring, Peter D. Sell, Stuart Max Walters, Harold Leslie Kerr Whitehouse
-
- Book:
- A Flora of Cambridgeshire
- Published online:
- 03 May 2011
- Print publication:
- 20 July 2009, pp xiii-xv
- First published in:
- 1964
-
- Chapter
- Export citation
INDEX
- Franklyn Hugh Perring, Peter D. Sell, Stuart Max Walters, Harold Leslie Kerr Whitehouse
-
- Book:
- A Flora of Cambridgeshire
- Published online:
- 03 May 2011
- Print publication:
- 20 July 2009, pp 341-366
- First published in:
- 1964
-
- Chapter
- Export citation
ACCOUNT OF THE SPECIES: Pteridophyta
- Franklyn Hugh Perring, Peter D. Sell, Stuart Max Walters, Harold Leslie Kerr Whitehouse
-
- Book:
- A Flora of Cambridgeshire
- Published online:
- 03 May 2011
- Print publication:
- 20 July 2009, pp 33-39
- First published in:
- 1964
-
- Chapter
- Export citation
Plate section
- Franklyn Hugh Perring, Peter D. Sell, Stuart Max Walters, Harold Leslie Kerr Whitehouse
-
- Book:
- A Flora of Cambridgeshire
- Published online:
- 03 May 2011
- Print publication:
- 20 July 2009, pp -
- First published in:
- 1964
-
- Chapter
- Export citation
Contents
- Franklyn Hugh Perring, Peter D. Sell, Stuart Max Walters, Harold Leslie Kerr Whitehouse
-
- Book:
- A Flora of Cambridgeshire
- Published online:
- 03 May 2011
- Print publication:
- 20 July 2009, pp vii-vii
- First published in:
- 1964
-
- Chapter
- Export citation
PREFACE
- Franklyn Hugh Perring, Peter D. Sell, Stuart Max Walters, Harold Leslie Kerr Whitehouse
-
- Book:
- A Flora of Cambridgeshire
- Published online:
- 03 May 2011
- Print publication:
- 20 July 2009, pp xi-xii
- First published in:
- 1964
-
- Chapter
- Export citation
-
Summary
John Ray published the first Flora of Cambridgeshire just over three hundred years ago, and since then the study of our local plants has been almost continuous. Relhan (1785) and Babington (1860) published further Floras at approximately hundred-year intervals, and this Flora was first planned by the Cambridge Natural History Society to appear in 1960, the tercentenary of Ray's work. Unfortunately we underestimated the amount of work involved, and regretfully decided to abandon the original date.
This work, based upon the Natural History Society's records, departs from the standard practice of most local Floras in that it does not give long lists of localities under each species. In their place is a concise list of Ordnance Survey Grid References which give an adequate picture of the main features of distribution of the species. The space saved allowed us to include taxonomic notes, comments and keys, which we believe will prove to be more valuable than the traditional distribution data.
1519 species are listed, of which 27 are Pteridophyta, 3 Gymnospermae, 1228 Angiospermae and 261 Bryophyta. Of the 1231 seed plants, 968 are native (65 of these being extinct), 19 are doubtfully native, 81 are naturalized, 31 are planted trees, and 195 casuals, garden escapes or relics of cultivation. Of the 27 Pteridophyta one is introduced and nine extinct. Of the Bryophyta 222 are mosses (20 extinct) and 39 liverworts (4 extinct).
INTRODUCTION
- Franklyn Hugh Perring, Peter D. Sell, Stuart Max Walters, Harold Leslie Kerr Whitehouse
-
- Book:
- A Flora of Cambridgeshire
- Published online:
- 03 May 2011
- Print publication:
- 20 July 2009, pp 1-30
- First published in:
- 1964
-
- Chapter
- Export citation
-
Summary
HISTORY OF THE STUDY OF THE FLORA
For three hundred years Cambridgeshire has been one of the best known counties, botanically, in the British Isles. The first list of plants made in the county was by Samuel Corbyn (1656), although a few records date from the sixteenth and early seventeenth centuries, made by men like Turner and How, who were beginning to study the flora of the country as a whole. However, the first work of real importance was that of the illustrious John Ray (cf. Raven, 1942), who in 1660 published a 12mo volume of 182 pages entitled Catalogus Plantarum circa Cantabrigiam nascentium. This has long been celebrated as the first comprehensive local British Flora. It was the result of nine years' work, and consists of an alphabetical list of plants found in the Cambridge area. It gives localities of plants, which in several cases can still be found there today, for example, Geranium sanguineum, ‘Found on Newmarket heath in the Devils ditch, also in a wood adjoining to the highway betwixt Stitchworth (Stetchworth) and Chidley (Cheveley)’.
In 1663 Ray published a 13-page appendix to the Cambridge Catalogue, and after this in 1685 appeared a second appendix consisting of 30 pages, edited by Peter Dent, a Cambridge apothecary. There was no second edition of the Cambridge Catalogue, but in 1670 Ray published his Catalogus Plantarum Angliae (ed. 2, 1677), in which all plants occurring in Cambridgeshire were marked with the letter C.
Characteristics and Herbicidal Control of Flat Pea
- W. C. Robocker, Harold D. Kerr
-
- Article
- Export citation
-
Flat pea (Lathyrus sylvestris L.), previously investigated as a forage plant in the United States, is a perennial legume with undesirable qualities of low palatability, difficulty of establishment, and a toxic principle. Characteristically aggressive and tolerant to a wide range of growth conditions, it is a potentially serious weed in its area of adaptation. A related species, everlasting pea (L. latifolius L.), has similar characteristics. A 2-lb/A rate of 2,4-dichlorophenoxyacetic acid (2,4-D), 2,4,5-trichlorophenoxyacetic acid (2,4,5-T), 2-(2,4,5-trichlorophenoxy)propionic acid (silvex), or 2,3,6-trichlorobenzoic acid (2,3,6-TBA) followed by 2-lb/A of silvex a year later gave complete control of established plants and seedlings of flat pea.
LIST OF ILLUSTRATIONS
- Franklyn Hugh Perring, Peter D. Sell, Stuart Max Walters, Harold Leslie Kerr Whitehouse
-
- Book:
- A Flora of Cambridgeshire
- Published online:
- 03 May 2011
- Print publication:
- 20 July 2009, pp viii-viii
- First published in:
- 1964
-
- Chapter
- Export citation
Frontmatter
- Franklyn Hugh Perring, Peter D. Sell, Stuart Max Walters, Harold Leslie Kerr Whitehouse
-
- Book:
- A Flora of Cambridgeshire
- Published online:
- 03 May 2011
- Print publication:
- 20 July 2009, pp i-vi
- First published in:
- 1964
-
- Chapter
- Export citation
ACCOUNT OF THE SPECIES: Bryophyta
- Franklyn Hugh Perring, Peter D. Sell, Stuart Max Walters, Harold Leslie Kerr Whitehouse
-
- Book:
- A Flora of Cambridgeshire
- Published online:
- 03 May 2011
- Print publication:
- 20 July 2009, pp 281-328
- First published in:
- 1964
-
- Chapter
- Export citation
-
Summary
Introduction
In the eight years since M. C. F. Proctor's paper, ‘A Bryophyte Flora of Cambridgeshire’ (Proctor, 1956) went to press, knowledge of the bryophytes of the county has been considerably extended. About 30 additions have been made to the county list, and the frequency and distribution within the county of many species is now better known. For several species, the first record for the county has been put back over 50 years, by the finding of Cambridgeshire specimens in F. Y. Brocas's collection at Saffron Walden Museum, and through the correction of faulty identifications of specimens in the Cambridge University Herbarium. A few published records have been omitted when there is doubt about the identity of the plants. A start has been made with the recording of bryophytes within 10 km. squares of the National Grid, and this has led to collecting in new areas, with some unexpected finds. Details of the habitat, locality, collector and date for these records have been deposited in the library of the Botany School. I am particularly indebted to Mr P. J. Bourne, who has made numerous excursions to all parts of the county in search of bryophytes. His collecting has led to over 600 additions to the 10 km. square lists. Others who have helped are acknowledged on p. xiii.
ACCOUNT OF THE SPECIES: Spermatophyta
- Franklyn Hugh Perring, Peter D. Sell, Stuart Max Walters, Harold Leslie Kerr Whitehouse
-
- Book:
- A Flora of Cambridgeshire
- Published online:
- 03 May 2011
- Print publication:
- 20 July 2009, pp 40-280
- First published in:
- 1964
-
- Chapter
- Export citation
A Flora of Cambridgeshire
- Franklyn Hugh Perring, Peter D. Sell, Stuart Max Walters, Harold Leslie Kerr Whitehouse
-
- Published online:
- 03 May 2011
- Print publication:
- 20 July 2009
- First published in:
- 1964
-
This flora, published in 1964, was the first comprehensive account of Cambridgeshire's plants since Babington's of 1860. Based on records to the end of 1962, it details 1509 species. These comprise 27 pteridophytes, 3 gymnosperms, 1223 angiosperms and 256 bryophytes. The following information is provided for each of the species: scientific name; well-known vernacular name, if any; first known record of the plant in the county; synonyms; habitat; notes on rare, difficult or interesting species; distribution by OS grid reference numbers. The introduction examines local topography, climate, the main geological areas and vegetation types, together with a history of botanical investigation in the county. Important localities are noted, highlighting key species that could then be found. Botanists, conservationists and naturalists will find this historic flora provides a valuable baseline for contemporary studies, including those focusing on biodiversity, extinction or the effects of climate change.