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Forage News [2002-09], Department Of Plant And Soil Sciences, University Of Kentucky

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Occurrence Of Entomophthorales On Spittlebugs Pests Of Pasture In Eastern São Paulo State, Brazil, Luis G. Leite, Sérgio B. Alves, H. M. Takada, Antonio Batista Filho, Donald W. Roberts

Biology Faculty Publications

Spittlebugs (Hemiptera: Cercopidae) are the most important pests of pasture in Brazil. Nymphal behavior, i.e. residing in the soil, makes their control with insecticides difficult. Although Entomophthorales fungi occasionally have been found at epizootic levels in spittlebug populations, they have not been cultured, had their incidence levels determined, nor evaluated for pest control potential. The research reported here aimed to evaluate the occurrence of Entomophthorales species on spittlebug pests of pasture in Pindamonhangaba County, São Paulo State, Brazil. Evaluations were carried out in 2 adjacent fields with Brachiaria decumbens and Pennisetum purpureum grasses, respectively, of 5 ha each. Evaluations were …

Preservacão De Micélio De Batkoa Sp. E. Furia Sp. (Entomophthorales) Em Combinaçao Com Dessecantes E Rudutores De Oxigênio, Luis G. Leite, Sérgio B. Alves, Antonio Batista Filho, J. E. M. Almeida, Donald W. Roberts

Biology Faculty Publications

PRESERVATION OF BATKOA SP. AND FURIA SP. (ENTOMOPHTHORALES )DRY MYCELIUM WITH COMBINATIONS OF DESICCANTS AND OXYGEN REDUCERS. Formulation is the most difficult part of Entomophthorales development as biopesticides and bioacaricides, and has caused difficulty in evaluating the Batkoa sp. and Furia sp. for the control of the cercopids Mahanarva fimbriolata and Deois schach, pests of sugar-cane and pastures. A technique for producing dry mycelium of Entomophthorales was previously developed to allow for field use of these fungi, but pathogen preservation (shelf life) was not satisfactory. Due to these difficulties, the research reported here aimed to evaluate the effect of combinations …

Crop Updates 2002 - Geraldton, Steve Penny Jr, Robin Wilson, Iian Barclay, Robyn Mclean, Robert Loughman, Jenny Garlinge, Bill Lambe, Neil Venn, Peter Clarke, Wal Anderson, Raffaele De Cima, James Bee, Darshan Sharma, Sheena Lyon, Melaine Kupsch, Mohammad Amjad, Pam Burgess, Veronika Reck, Brenda Shackley, Ray Tugwell, Bindi Webb, Robert Park, Daya Patabendige, Phil Michael, Debbie Thackray, Jenny Hawkes, Roger Jones, David Stephens, Bob French, Laurie Wahlsten, Glen Riethmuller, M. Bolland, P. White, T. Khan, Kevin Walden, Ravjit Khangura, Martin J. Barbetti, Graham Walton, Françoise Berlandier, Paul Carmody, Christiaan Valentine, Roy Latter, Keith Devenish, Bill Bowden, Michael O'Connell, Chris Gazey, David Gartner, Caroline Peek, David Rogers, Greg Shea, George Yan, Alexandra Douglas, Sally Peltzer, Paul Matson, David Minkey, Clinton Revell, Giles Glasson, Dean Thomas, Aik Cheam, Siew Lee, Mike Clarke, Peter Newman, Glenn Adam

Crop Updates

This session covers twenty seven papers from different authors:

1. Taking the Why out of Wyalkatchem – the new widely adapted wheat variety, Steve Penny Jr, Department of Agriculture

2. Future wheat varieties, Robin Wilson, Iain Barclay,Robyn McLean, Robert Loughman, Jenny Garlinge, Bill Lambe, Neil Venn and Peter Clarke

Department of Agriculture

3. Maximising wheat variety performance through agronomic management, Wal Anderson, Raffaele Del Cima, James Bee, Darshan Sharma, Sheena Lyon, Melaine Kupsch, Mohammad Amjad, Pam Burgess, Veronika Reck, Brenda Shackley, Ray Tugwell, Bindi Webb and Steve Penny Jr

Department of Agriculture

4. Cereal rust update 2002 – …

Crop Updates 2002 - Weeds, Vanessa Stewart, Peter Newman, Glenn Adam, Andrew Blake, Natalie Lauritsen, Sally Peltzer, Paul Matson, Nerys Wilkins, David Minkey, Glen Riethmuller, Tim Cusack, Kathryn Steadman, Pippa Michael, Paul Blackwell, Dave Brindal, Michael Walsh, Wayne Parker, Clinton Revell, Giles Glasson, Dean Thomas, Alister Draper, Bill Roy, Marta Monjardin, David Pannell, Stephen Powles, Robert Barrett-Lennard, Martin Bent, Paul Neve, Art Diggle, Patrick Smith, Mechelle Owen, Abul Hashem, Christopher Preston, Tracey Gillam, Rick Llewellyn, Richard Quinlan, Aik Cheam, Siew Lee, Mike Clarke, David Nicholson, Harmoohinder S. Dhammu, Terry Piper, Chad Sayer, Ian Rose, Andrew Blake, Jerome Critch, Gordon R. Cumming, Sam Taylor, John Moore, Rosyln Jettner, Stuart Bee, Lionel Martin, Keith Devenish, Felicity Flugge, Amir Abadi, Duncan Peter, Stuart Mcalpine

Crop Updates

This session covers fifty eight papers from different authors:

1. INTRODUCTION Vanessa Stewart, DEPARTMENT OF AGRICULTURE

INTEGRATED WEED MANAGEMENT

IWM system studies / demonstration sites

2. Major outcomes from IWM demonstration sites, Alexandra Douglas Department of Agriculture

3. Integrated weed management: Katanning, Alexandra Douglas Department of Agriculture

4. Integrated weed management: Merredin, Vanessa Stewart Department of Agriculture

5. Long term resistance site: Get ryegrass numbers low and keep them low! Peter Newman and Glen Adams Department of Agriculture

6. Using pastures to manage ryegrass populations, Andrew Blake and Natalie Lauritsen Department of Agriculture

Weed biology and competition

7. …

Crop Updates 2002 - Lupins, Amelia Mclarty, Bob French, Laurie Wahlsten, Martin Harries, Paul Blackwell, Mike Collins, Bill Crabtree, Geoff Fosbery, Angie Roe, Matt Beckett, Abul Hashem, Nerys Wilkins, Geoff Thomas, Ken Adcock, Debbie Thackray, Jenny Hawkes, Roger Jones, Brenda Coutts, Manisha Shankar, Mark Sweetingham, Bevan Buirchell, Nichole Burges, Dominie Wright, Susan J. Barker, Jairo A. Palta, Neil C. Turner, Matt Evans, Brett Glencross, John Curnow, Wayne Hawkins, Jon C. Clements

Crop Updates

This session covers twenty four papers from different authors:

LUPIN INDUSTRY ISSUES AND RESEARCH DIRECTIONS

ACKNOWLEDGMENTS Amelia McLarty LUPIN CONVENOR DEPARTMENT OF AGRICULTURE

VARIETIES

1. Evaluation of lupinus mutabilis in Western Australia, Bob French, Laurie Wahlsten and Martin Harries, Department of Agriculture

2. Adaption of restricted-branching lupins in short-growing season environments, Bob French, Laurie Wahlsten, Department of Agriculture

ESTABLISHMENT

3. Moisture delving for better lupin establishment, Dr Paul Blackwell, Department of Agriculture

4. Lupins, tramlines, 600mm rows, rolling and shield spraying … a good result in a dry season! Paul Blackwell and Mike Collins, Department of Agriculture

5. Lupin …

Ec02-177 Purple Loosestrife, Stevan Z. Knezevic

University of Nebraska-Lincoln Extension: Historical Materials

Purple loosestrife (Lythrum salicaria) is an introduced invasive weed that isover running thousands of acres of wetlands and waterways in the Midwest. Once purple loosestrife invades a wetland, natural habitat is lost and the productivity of native plant and animal communities is severely reduced. These losses in turn interfere with various levels of the ecosystem and area recreational activities such as fishing, boating and hunting, diminishing revenue from tourism and impairing the social and economic well being of local communities. A single control measure cannot provide long-term, sustainable control of this weed. An integrated approach, using a variety …

Ec02-173 Spotted And Diffuse Knapweed, Neil L. Heckman, Ryan M. Goss, Roch E. Gaussoin, Stevan Z. Knezevic, John L. Lindquist

University of Nebraska-Lincoln Extension: Historical Materials

Spotted knapweed (Centaure amaculosa Lam. = C. biebersteinii DC.) and diffuse knapweed (C.diffusa Lam.) are two of Nebraska’s seven noxious weeds. They are also noxious in at least 17 other states. These are closely related species that are well adapted to a variety of habitats including open forests, rangelands and pastures, Conservation Reserve Program lands, roadsides, and ditch banks. Centaurea is a large genus of over 400 species, 32 of which are common weeds of the United States and several of which [e.g., yellowstar thistle, C. solstitalis L, and Russian knapweed, C. repens L. =Acroptilon repens (L.) …

Ec02-172 Plumeless Thistle, Kara L. Hilgenfeld, Alex Martin

University of Nebraska-Lincoln Extension: Historical Materials

Plumeless thistle (Carduus acanthoides L.) is one of seven noxious weeds in Nebraska. An introduced invasive broadleaf weed native to Europe and Asia, plumeless thistle currently infests about 65,000 acres in Nebraska. Infestations of plumeless thistle may reduce productivity of pastures and rangeland, where infestations tend to be the largest. Plumeless thistle competes with and suppresses growth of desirable species. Heavy infestations prevent livestock from grazing the area and lighter infestations prevent livestock from eating plants growing near the thistle. Estimates place the annual loss in Nebraska agricultural production due to plumeless thistle at $162,000. Although plumeless thistle is …

Ec02-171 Canada Thistle, Robert G. Wilson

University of Nebraska-Lincoln Extension: Historical Materials

Canada thistle [Cirsium arvense (L) Scop.] is one of the seven species defined by Nebraska law as a noxious weed. At least 35 other states also have determined by law that Canada thistle poses a threat to the economic, social, and aesthetic well-being of the residents of their state. Canada thistle is probably the most widespread of all the thistle species and many land managers consider it the most difficult thistle to control. In Nebraska, Canada thistle is estimated to infest 460,000 acres.

Ec02-176 Musk Thistle, Fred Roeth, Steven R. Melvin, Irvin L. Schleufer

University of Nebraska-Lincoln Extension: Historical Materials

Musk thistle (Carduus nutans L.) is an introduced invasive broadleaf weed native to Europe, North Africa, and Asia. In these areas it is a minor weed because natural enemies keep its population low. When the plant was introduced into North America, its natural enemies were left behind. Without these natural checks, the thistle is able to thrive and compete with native vegetation.

Musk thistles aggressively invade all lands in Nebraska. Typical cropland weed control methods are very effective against them; however, land with permanent cover (pasture, range, roadway ditches and wasteland) that is not tilled or treated with a …

Ec02-174 Leafy Spurge, Robert A. Masters, Brady F. Kappler

University of Nebraska-Lincoln Extension: Historical Materials

Leafy spurge is an invasive weed that infests over three million acres in the northern Great Plains and the prairie provinces of Canada. It is commonly found in rangelands, pastures, roadsides, rights-of-way, and woodlands. Leafy spurge can reduce rangeland and pasture carrying capacity by as much as 75 percent because it competes with forages and cattle avoid grazing areas infested with this weed. In North Dakota where leafy spurge infests about 900,000 acres, estimates of direct and indirect losses exceed $100 million each year. In Nebraska, the direct loss in forage value attributed to leafy spurge has been estimated at …