Life Sciences Commons^™

Crop Updates 2000 - Weeds, Vanessa Stewart, David Minkey, Abul Hashem, Glen Riethmuller, Martin Harries, Peter Newman, Cameron Weeks, Harmohinder S. Dhammu, Aik Cheam, David Bowran, Terry Piper, Alexandra Wallace, Bill Roy, Keith L. Devenish, Lisa J. Leaver, Brad Rayner, Mike Collins, Marta Monardino, David Pannell, Stephen Powles, Sally Peltzer, Michael Walsh, Charles Boyle, P. Neve, D. Lorraine-Colwill, C. Preston, Art Diggle, Rick Llewellyn, Ryan Duane, Siew Lee, David Nicholson, Peter Carlton, Stewart Smith, Bill Crabtree, Gordon Cumming, David Cameron, Mike Jackson, Scott Paton, John R. Peirce, Greg Shea

Crop Updates

This session covers thirty six papers from different authors:

INTRODUCTION, Vanessa Stewart Agriculture Western Australia

INTEGRATED WEED MANAGEMENT

1. Effect of seeding density, row spacing and Trifluralin on the competitive ability of Annual Ryegrass in a minimum tillage system, David Minkey, Abul Hashem, Glen Riethmuller and Martin Harries, Agriculture Western Australia

2. High wheat seeding rates coupled with narrow row spacing increases yield and suppresses grass, Peter Newman¹ and Cameron Weeks²,¹Agronomist, Elders Limited ²Mingenew/Irwin Group

3. Resistant ryegrass management in a wheat – lupin rotation, Abul Hashem, Harmohinder S. Dhammu, Aik Cheam, David Bowran and …

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Crop Updates 2000 Cereals - Part 3, Roslyn Jettner, Blakely Paynter, Glen Mcdonald, Pierre Fievez, Ian Foster, David Tennant, Wal Anderson, James Ridsdill-Smith, Celia Pavri, Ross Chapman, Senthold Asseng, Steve Carr, Brad Nutt, Lindrea Latham, Roger Jones, Anyou Liu, Clinton Revell, David Ferris, Roy Latta, Lisa-Jane Blacklow, Chris Matthews, Ted Woodburn, Paul Yeoh, Ian Rose, Anita Lyons, Simon Cook, Matthew L. Adams, Robert J. Corner

Crop Updates

This session covers eighteen papers from different authors:

BARLEY AND OAT AGRONOMY

1. Unicorn barley must meet malting specifications to be a viable option, Roslyn Jettnerand Blakely Paynter, Agriculture Western Australia

2. Optimum oat seed rates, Glenn McDonald, Agriculture Western Australia

3. Production and Quality of export Oaten Hay (1998 and 1989), Pierre Fievez, Pierre Fievez and Associates

FROST

4. Climatology of Frost in Southern Western Australia, Ian Foster, Agriculture Western Australia

5. Flowering calculator, David Tennant, Agriculture Western Australia

6. Some options for managing the risk of frost damage, Wal Anderson, Agriculture Western Australia

PASTURE

7. …

Estimation Of Base Temperatures For Nine Weed Species, Scott J. Steinmaus, Timothy S. Prather, Jodie S. Holt

Biological Sciences

Experiments were conducted to test several methods for estimating low temperature thresholds for seed germination. Temperature responses of nine weeds common in annual agroecosystems were assessed in temperature gradient experiments. Species included summer annuals (Amaranthus albus, A. palmeri, Digitaria sanguinalis, Echinochloa crus-galli, Portulaca oleracea, and Setaria glauca), winter annuals (Hirschfeldia incana and Sonchus oleraceus), and Conyza canadensis, which is classified as a summer or winter annual. The temperature below which development ceases (T_base) was estimated as the x-intercept of four conventional germination rate indices regressed on temperature, by repeated probit analysis, …

An Investigation On The Weed Distribution In Some Agricultural Fields Of Eskişehir And Environs, Cengi̇z Türe, Yavuz Bülent Köse

Turkish Journal of Agriculture and Forestry

In this study, the flora of the weeds, which is one of the most important factors adversely affecting agricultural production in Eskişehir and environs, was investigated. In the study area, 75 genera, 91 species and subspecies belonging to 32 families were determined. The Asteraceae (Compositae)family was found to have the largest number of taxa in the study area. Phytogeographical distribution of plants shows that the most commonly found element was Irano-Turanian (4.3%). It was found that 39% of the described taxa were distributed in wheat fields, 25 % in beet fields, 14 % in clover fields and 12 % of …

Herbicide Resistant Weeds, Alex R. Martin, Fred W. Roeth, Chad Lee

University of Nebraska-Lincoln Extension: Historical Materials

The development of herbicide resistant weeds is described along with strategies to prevent development. Herbicide resistance refers to plants within a weed species that, after repeated use of a herbicide, are no longer controlled by normal rates of that herbicide. Herbicide resistance often develops in fields that have been sprayed with herbicides with the same site of action for several years. Herbicide resistance is usually attributed to slight genetic differences between resistant and susceptible plants. These changes occur at a frequency of one plant in a million or even a billion. Herbicide resistance is not dependent on the environment or …

Wild Blueberries 1999 Csrees Progress Reports, Alfred A. Bushway, Bodhan Slabyj, Russell Hazen, Darrell W. Donahue, Frank A. Drummond, Judith A. Collins, Rodney J. Bushway, Brian Perkins, Seanna L. Annis, Connie S. Stubbs, John M. Smagula, Walter Litten, Richard Dyer, Karen Loennecker, David E. Yarborough, Timothy M. Hess, David Lambert, John Jemison

Wild Blueberry Research Reports

The 1999 edition of the Wild Blueberries CSREES Progress Reports was prepared for the Maine Blueberry Commission and the University of Maine Blueberry Advisory Committee by researchers at the University of Maine, Orono. Projects in this report include:

1. Effects of QF Processing on Microbiological Quality of Maine Wild Blueberries

2. Separation of Maggot-Infested Blueberries in the IQF Processing Line

3. Determination of Pesticide Residue Levels in Fresh and Processed Wild Blueberries

4. Control Tactics for Blueberry Pest Insects

5. IPM Strategies

6. Biology and Ecology of Blueberry Pest Insects

7. Survey of Stem Blight and Leaf Spot Diseases in …