Digital Commons Network^™

A Pseudomonas Syringae Pv. Tomato Dc3000 Mutant Lacking The Type Iii Effector Hopq1-1 Is Able To Cause Disease In The Model Plant Nicotiana Benthamiana, Chia-Fong Wei, Brian H. Kvitko, Rena Shimizu, Emerson Crabill, James R. Alfano, Nai-Chun Lin, Gregory B. Martin, Hsiou-Chen Huang, Alan Collmer

Center for Plant Science Innovation: Faculty Publications

The model pathogen Pseudomonas syringae pv. tomato DC3000 causes bacterial speck in tomato and Arabidopsis, but Nicotiana benthamiana, an important model plant, is considered to be a non-host. Strain DC3000 injects approximately 28 effector proteins into plant cells via the type III secretion system (T3SS). These proteins were individually delivered into N. benthamiana leaf cells via T3SS-proficient Pseudomonas fluorescens, and eight, including HopQ1-1, showed some capacity to cause cell death in this test. Four gene clusters encoding 13 effectors were deleted from DC3000: cluster II (hopH1, hopC1), IV (hopD1, hopQ1-1, hopR1), IX (hopAA1-2, hopV1, hopAO1, hopG1), and native plasmid pDC3000A …

Crop Updates 2007 - Cereals, Rob Loughman, R. Lance, I. Barclay, G. Crosbie, S. Harasymow, W. Lambe, Chengdao Li, R. Mclean, C. Moore, K. Stefanova, A. Tarr, R. Wilson, Matu Peipi, Matt Whiting, Christine M. Zaicou-Kunesch, Shahajahan Miyan, Brenda Shackley, Len J. Wade, Lindsay W. Bell, Felicity Byrne (Nee Flugge), Mike A. Ewing, Blakely Paynter, Andrea Hills, Raj Malik, Kelly Winfield, Harmohinder Dhammu, Vince Lambert, Chris Roberts, Jeremy Lemon, Geoff J. Thomas, Ian Hartley, Andrew Taylor, Manisha Shankar, John Majewski, Vivien Vanstone, Brenda A. Coutts, Monica Kehoe, Roger Jones, Geoffrey Dwyer, Belinda Welsh, Cuiping Wang, Linda Price

Crop Updates

This session covers twenty six papers from different authors:

CEREAL BREEDING

1. Strategies for aligning producer and market imperatives in cereal breeding in Western Australia, R. Loughman, R. Lance, I. Barclay, G. Crosbie, S. Harasymow, W. Lambe, C. Li, R. McLean, C. Moore, K. Stefanova, A. Tarr and R. Wilson, Department of Agriculture and Food

2. LongReach plant breeders wheat variety trials – 2006, Matu Peipi and Matt Whiting, LongReach Plant Breeders

WHEAT AGRONOMY

3. Response of wheat varieties to sowing time in the northern agricultural region in 2006, Christine Zaicou, Department of Agriculture and Food

4. Response …

Crop Updates 2007 - Lupins, Pulses And Oilseeds, Mark Seymour, Jacinta Falconer, Ian Pritchard, Rodger Beermier, Wayne Parker, Martin Harries, Kedar Adhikari, Geoff Thomas, Peter White, Bevan Burichell, Mike Baker, Bob French, Jo Walker, Laurie Maiolo, Leigh Smith, Mark Sweetingham, Lorne Mills, Harmohinder Dhammu, Ben Tang, Qifu Ma, Zed Rengel, Bill Bowden, Ross Brennan, Reg Lunt, Tim Hilder, Tim Maling, A. Diggle, D. Thackray, R. A.C. Jones, K. H.M. Siddique, Vijay Jayasena, Leonardus Kardono, Ken Quail, Ranil Coorey, Hannah Williams, Don Elani Jayawardena, Kerry Regan, Rod Hunter, Tanveer Khan, Jenny Garlinge, Heather Clarke, W. Macleod, S. Morgan, A. Harris, Alan Meldrum, Helen Bowers, A. Bakr, Phillip Chambers, Chris Veitch, Tony Leonforte, Pam Burgess, Leanne Young, Brenda Coutts, Donna O'Keefe, Rhonda Pearce, Monica Kehoe, Terri Jasper, Tim Pope, Michael Materne, Ping Si, Mike Walsh, H. H. T. Phan, S. R. Ellwood, J. Hane, A. Williams, R. Ford, S. Thomas, R. Oliver, Katie Robinson, Mohammad Amjad, Graham Walton, Pat Fels, Andy Sutherland, Imma Farre, Michael Robertson, Senthold Asseng3, Ravjit Khangura, Moin Salam

Crop Updates

This session covers forty eight papers from different authors:

2006 REGIONAL ROUNDUP

1. South east agricultural region, Mark Seymour¹ and Jacinta Falconer², ¹Department of Agriculture and Food, ²Cooperative Bulk Handling Group

2. Central agricultural region, Ian Pritchard, Department of Agriculture and Food

3. Great Southern and Lakes region, Rodger Beermier, Department of Agriculture and Food

4. Northern agricultural region, Wayne Parker and Martin Harries, Department of Agriculture and Food

LUPINS

5. Development of anthracnose resistant and early flowering albus lupins (Lupinus albus L) in Western Australia, Kedar Adhikari and Geoff Thomas, Department of …

Crop Updates 2007 - Weeds, Alexandra Douglas, Peter Newman, Sally Peltzer, Abul Hashem, Aik Cheam, Siew Lee, Natalie Maguire, Michael Walsh, Dan Cornally, Matt Willis, Glen Riethmuller, Shahab Pathan, Michael Renton, Art Diggle, Mechelle Owen, Stephen Powles, Roberto Busi, Robert Barrett-Lennard, Andrew Storrie, David Minkey, Craig A. Ruchs, Peter Boutsalis, Catherine Borger, Nerys Wilkins, Julie Roche, Martin Harries, John Peirce, Brad Rayner, John Moore, Ray Fulwood, Chris Roberts, Paul Matson, Bob French, Laurie Maiolo, Lorne Mills, Harmohinder Dhammu, Ben Tan, Vince Lambert, Chris Roberts, Vanessa Stewart

Crop Updates

This session covers thirty two papers from different authors:

1. ACKNOWLEDGEMENTS, Alexandra Douglas CONVENOR – WEEDS DEPARTMENT OF AGRICULTURE AND FOOD

WILD RADISH MANAGEMENT

2. Decimate a wild radish seed bank in five years, Peter Newman, Sally Peltzer, Abul Hashem and Aik Cheam, Department of Agriculture and Food

3. High level of seed-set control in wild radish is achievable, Aik Cheam and Siew Lee,Department of Agriculture and Food

4. Wild radish: Best management practice, Aik Cheam and Siew Lee, Department of Agriculture and Food

5. Control of phenoxy resistant wild radish through the combined effects of wheat …

Crop Updates 2007 - Farming Systems, David Jeffries, A. Loi, B. J. Nutt, Clinton K. Revell Dr, Yvette Oliver, Michael Robertson, Bill Bowden, Kit Leake, Ashley Bonser, Ian Maling, Bindi Isbister, Garren Knell, Alison Slade, David Stephens, Michael Meuleners, David Beard, Nicolyn Short, Rob Grima, Ingrid Richardson, Ruhi Ferdowsian, Geoff Bee, David Evans, Bob Gilkes, Senthold Asseng, Jim Dixon, Felicity Byrne, Mike Ewing, Dennis Van Gool, Louise Barton, Ralf Kiese, David Gatter, Klaus Butterbach-Bahl, Renee Buck, Christoph Hinz, Daniel Murphy, Cameron Weeks, Meredith Fairbanks, John Peirce, Brad Rayner, Sandy White, Paul Damon, Qifa Ma, Zed Rengel, Ed Barrett-Lennard, Meir Altman, Tracey M. Gianatti, Lindsay Bell, Ben Webb, Caroline Peek, Paul Sanford, Paul Blackwell, Glen Riethmuller, Darshan Sharma, Mike Collins, Frank D'Emden, David Hall, G. P. Manango, D. L. Steverson, Vanessa Stewart, Julie Roche, Peter Rutherford, Imma Farre, Ian Foster, Stephen Charles, Frances Hoyle, N. Milton, M. Osman, L. K. Abbott, W. R. Cookson, S. Darmawanto, Rob Sands, David Mccarthy, Paul Carmody, J. Russell, J. Eyres, G. Fosbery, A. Roe, Phil Nichols, Andrew Bathgate, Anne Wilkins

Crop Updates

This session covers forty papers from different authors:

1. Quality Assurance and industry stewardship, David Jeffries, Better Farm IQ Manager, Cooperative Bulk Handling

2. Sothis: Trifolium dasyurum (Eastern Star clover), A. Loi, B.J. Nutt and C.K. Revell, Department of Agriculture and Food

3. Poor performing patches of the paddock – to ameliorate or live with low yield? Yvette Oliver¹, Michael Robertson¹, Bill Bowden², Kit Leake³and Ashley Bonser³, CSIRO Sustainable Ecosystems¹, Department of Food and Agriculture², Kellerberrin Farmer³

4. What evidence is there that …

Ips Pini (Curculionidae: Scolytinae) Is A Vector Of The Fungal Pathogen, Sphaeropsis Sapinea (Coelomycetes), To Austrian Pines, Pinus Nigra (Pinaceae), Justin G.A. Whitehall, Jeffery S. Lehman, Pierluigi Bonello

Biology and Earth Science Faculty Scholarship

Sphaeropsis sapinea (Fr.:Fr.) Dyko and Sutton, is among the most common and widely distributed pathogens of conifers worldwide. S. sapinea is disseminated over short distances by rain splash and moist wind, but significant knowledge gaps regarding long-range dispersal remain. Our objective was to determine whether or not the pine engraver beetle, Ips pini Say, is a vector of the pathogen onto Austrian pines (Pinus nigra Arnold). In 2004 and 2005, individuals of I. pini were collected with pheromone traps at two locations in central Ohio (197 and 1,017 individuals for 2004 and 2005, respectively) and screened for the presence of …

Analysis Of Powdery Mildew-Resistant Dogwood Accessions Using Aflp, Margaret T. Mmbaga, Roger J. Sauvé

Agricultural and Environmental Sciences Faculty Research

Twenty-five dogwood accessions (one Cornus kousa, three C. kousa × C. florida hybrids, and 21 C. florida) were characterized using amplified fragment length polymorphism. Among the C. florida accessions, four were named cultivars and 17 were selections from Tennessee State University's dogwood breeding program. Amplified fragment length polymorphism band profiles obtained from 13 EcoRI/MseI (+3/+3) primer pairs showed the presence of high genetic diversity between species and within the C. florida accessions. Each accession was distinctly different from each other, and the resistant clones clustered into distinct groups.

Enhancing Nest Sites For Native Bee Crop Pollinators, Mace Vaughan, Scott Hoffamn Black

Agroforestry Notes (USDA-NAC)

The European honey bee receives most of the credit for crop pollination, but the number of managed honey bee hives is half of what it was in the 1950s; and this number continues to decline primarily because of honey bee pests and diseases. Native bees, however, contribute significantly to crop pollination and, on farms with sufficient natural habitat located nearby, may even provide all of the required pollination for some crops. In order to support the native bee community, it is essential to provide nesting sites in addition to floral resources. Unfortunately, intensively managed farm landscapes often lack the untilled …

Transgenic Induction Of Mitochondrial Rearrangements For Cytoplasmic Male Sterility In Crop Plants, Ajay Pal S. Sandhu, Ricardo V. Abdelnoor, Sally Ann Mackenzie

Center for Plant Science Innovation: Faculty Publications

Stability of the mitochondrial genome is controlled by nuclear loci. In plants, nuclear genes suppress mitochondrial DNA rearrangements during development. One nuclear gene involved in this process is Msh1. Msh1 appears to be involved in the suppression of illegitimate recombination in plant mitochondria. To test the hypothesis that Msh1 disruption leads to the type of mitochondrial DNA rearrangements associated with naturally occurring cytoplasmic male sterility in plants, a transgenic approach for RNAi was used to modulate expression of Msh1 in tobacco and tomato. In both species, these experiments resulted in reproducible mitochondrial DNA rearrangements and a condition of male …

Water In Beaver Dam Wash And Lytle Preserve, Stanley L. Welsh

Books by Faculty of the Monte L. Bean Life Science Museum

This short work is derived from a manuscript prepared for presentation in a water adjudication hearing, following a proposal to pipe water from wells in Beaver Dam Wash for transfer across state lines to be used for culinary and other purposes in Mesquite, Nevada. The Wash is estimated to yield 2000 acre feet of water annually, mostly as subsurface flow, at the Arizona line. About a third of that amount is already appropriated by users along the Wash in Utah, but there are applications pending for more than 100,000 acre feet in Utah. Thus, the Wash is already oversubscribed by …

Proceedings Of The 34th Annual Meeting Of The Southern Soybean Disease Workers (February 18-19, 2007, St. Louis, Missouri), Daniel H. Poston, Michael E. Schmidt, J. Allen Wrather, Jason Bond, Stephen R. Koenning

Southern Soybean Disease Workers: Conference Proceedings

Southern United States Soybean Disease Loss Estimates for 2006. SR Koenning

Stratego 250 EC, Broad Spectrum Disease Control in Soybeans. JR Bloomberg, RA Myers, and R Kraus

Asian Soybean Rust: Efficacy of Selected Fungicides and Observations on Their Use. RW Schneider, CL Clark, EP Mumma, and CG Giles

Effects of Light Intensity and Darkness Period on Infection of Soybean Rust in Controlled Conditions. J Mo, T Guo, X Li, and XB Yang

Identification of Maturity Group 3 and 4 Soybean Cultivars and Lines Resistant to Cercospora sojina by Field Screening and Molecular Markers. A Wrather, R Mian, G Shannon, J …

Understanding And Modeling The Effect Of Temperature And Daylength On Soybean Phenology Under High-Yield Conditions, T. D. Setiyono, Albert Weiss, James E. Specht, A. M. Bastidas, Kenneth G. Cassman, A. Dobermann

Department of Agronomy and Horticulture: Faculty Publications

Temperature and photoperiod can be used to simulate soybean (Glycine max [L.] Merr) phenology because they serve as surrogates for complex biochemical pathways leading to the appearance of certain developmental stages at the whole plant level. We developed a soybean phenology model (SOYDEV) which utilizes non-linear temperature and photoperiod functions and separates floral induction and post-induction for simulating time of flowering. This model accurately simulated the dynamics of vegetative development, final node number and the occurrence of major reproductive stages such as flowering (R₁), beginning pod (R₃), mid-pod elongation (R_3,5), beginning seed (R …

Are Hawkmoths The Mysterious Pollinators Of The Jamestown Lily?, W. John Hayden

Biology Faculty Publications

“Hawkmoth flowers are easy to predict but difficult to document,” noted botanist Verne Grant in his comprehensive review of hawkmoth pollination systems in North America (Botanical Gazette 144: 439-449. 1983). Grant included Jamestown (atamasco) lilies (among other zephyr lily species) as examples of plants that are probably hawkmoth- pollinated, but for which the actual pollination mechanism remains undocumented.

Set3p Monomethylates Histone H3 On Lysine 9 And Is Required For The Silencing Of Tandemly Repeated Transgenes In Chlamydomonas, Juan Casas-Mollano, Karin V. Van Dijk, John Eisenhart, Heriberto D. Cerutti

Center for Plant Science Innovation: Faculty Publications

SET domain-containing proteins of the SU(VAR)3-9 class are major regulators of heterochromatin in several eukaryotes, including mammals, insects, plants and fungi. The function of these polypeptides is mediated, at least in part, by their ability to methylate histone H3 on lysine 9 (H3K9). Indeed, mutants defective in SU(VAR)3-9 proteins have implicated di- and/or trimethyl H3K9 in the formation and/or maintenance of heterochromatin across the eukaryotic spectrum. Yet, the biological significance of monomethyl H3K9 has remained unclear because of the lack of mutants exclusively defective in this modification. Interestingly, a SU(VAR)3-9 homolog in the unicellular green alga Chlamydomonas reinhardtii, SET3p, …

Conservation Of B Class Gene Expression In The Second Whorl Of A Basal Grass And Outgroups Links The Origin Of Lodicules And Petals, Clinton Whipple, Michael Zanis, Elizabeth Kellogg, Robert Schmidt

Biology Department Faculty Works

Studies of flower development in core eudicot species have established a central role for B class MADS-box genes in specifying petal and stamen identities. Similarly in maize and rice, B class genes are essential for lodicule and stamen specification, suggesting homology of petals and lodicules and conservation of B class gene activity across angiosperms. However, lodicules are grass-specific organs with a morphology distinct from petals, thus their true homology to eudicot and nongrass monocot floral organs has been a topic of debate. To understand the relationship of lodicules to the sterile floral organs of nongrass monocots we have isolated and …

A Strong Constitutive Ethylene-Response Phenotype Conferred On Arabidopsis Plants Containing Null Mutations In The Ethylene Receptors Etr1 And Ers1, Xiang Qu, Brenda P. Hall, Zhiyong Gao, G. Eric Schaller

Dartmouth Scholarship

The ethylene receptor family of Arabidopsis consists of five members, falling into two subfamilies. Subfamily 1 is composed of ETR1 and ERS1, and subfamily 2 is composed of ETR2, ERS2, and EIN4. Although mutations have been isolated in the genes encoding all five family members, the only previous insertion allele of ERS1 (ers1-2) is a partial loss-of-function mutation based on our analysis. The purpose of this study was to determine the extent of signaling mediated by subfamily-1 ethylene receptors through isolation and characterization of null mutations.

Association Of Ergot Alkaloids With Conidiation In Aspergillus Fumigatus, Christine M. Coyle, Shawn C. Kenaley, William R. Rittenour, Daniel G. Panaccione

Department of Plant Pathology: Faculty Publications

Ergot alkaloids are mycotoxins that affect the nervous and reproductive systems of exposed individuals through interactions with monoamine receptors. They have been studied more widely in ergot fungi and grass endophytes but also are found in Aspergillus fumigatus, an opportunistic human pathogen that reproduces and disseminates exclusively through conidia. The ergot alkaloids festuclavine and fumigaclavines A, B and C are present in or on conidia of A. fumigatus. Cultures of the fungus that are free of conidia are difficult to obtain, obscuring comparisons of conidia versus vegetative hyphae as sources of the ergot alkaloids. To create conidiation-deficient strains of A. …

Plants And Gardening, Southwest Minnesota State University

Agriculture/Horticulture

Bibliography and photographs of a display of government documents from Southwest Minnesota State University.

Intsormil 2007 Annual Report, John M. Yohe, Kimberly Christiansen, Joan Frederick

INTSORMIL Impacts and Bulletins

The 2007 INTSORMIL Six Year Report presents the progress and notable achievements by the Sorghum/Millet CRSP during the period of July 1, 2001 - June 30, 2007. These results are an outcome of partnerships between scientists at seven U.S. Land Grant Universities (Kansas State University, Mississippi State University, Ohio State University, University of Nebraska, Purdue University, Texas A&M University and West Texas A&M University), scientists of the Agricultural Research Service of the U.S. Department of Agriculture at Tifton, Georgia and the National Agricultural Research Systems (NARS) and National Universities in nineteen countries in Central America, West Africa, East Africa and …

Integration Of Gis And Bentgrass Ecology For Ecological Risk Assessment., Carol Auer, Collin Ahrens

Plant Science Presentations and Proceedings

All new technologies carry both benefits and risks. Genetically-modified plants must be assessed before they are released into the environment. Our research examines plant gene flow and the potential impacts from environmental release of genetically-modified plants. Plant gene flow is a natural process that occurs when pollen from one plant lands on the flower of another plant and produces a hybrid offspring. Gene flow can produce hybrid offspring with new traits that could change the ability of the plant to survive and spread. If hybrid offspring have some advantage in the environment, they could become invasive and/or affect other components …

Nitrogen Management For Wheat Protein And Yield In The Esperance Port Zone, Jeremy Lemon

Bulletins 4000 -

This manual is part of a joint project between the Department of Agriculture and Food WA and the South East Premium Wheat Growers Association (SEPWA) with funding from the Grains Research and Development Corporation (GRDC). Growers in the Esperance port zone have been concerned with declining protein levels in wheat and its impact on farm returns as well as strong messages from processors of Esperance wheat that they require higher protein in the wheat they mill and process.

The project entailed grower involvement in designing and executing field scale experiments using farmer machinery, grower workshops, field days and meetings to …

Homestead National Monument Of America Bur Oak Forest Restoration Plan: Reference Condition And Management Considerations, Steven B. Rolfsmeier

Nebraska Game and Parks Commission: White Papers, Conference Presentations, and Manuscripts

The Vegetation Management Action Plan for Homestead National Monument of America includes a statement of the desired future condition that states: "The monument's natural resources are managed in such a way as to maintain a heterogeneous landscape composed of a mosaic of high quality remnant and restored tallgrass prairie, lowland bur oak forest and associated ecotones, as well as prairie streams and their hydrologic processes; that reflects the value of the site as a homestead, represents as accurately as possible the environment encountered by early settlers, and preserves native biodiversity" (Bolli 2006). The lowland bur oak forest along Cub Creek …

Rational Risk/Benefit Analysis Of Genetically Modified Crops, Stanley P. Kowalski

Law Faculty Scholarship

Safety concerns over the use of molecular biotechnology in the improvement of crops has generated substantial, heated and confusing debates, often driven by ideology and hysterics. Modification of crops is not new, and biotechnology (in its broadest sense) has been used for over a century to accelerate the development of new crops for food, feed and fibre, so as to meet the demands of a growing global community. The introduction of crops developed via molecular biotechnology [Genetically Modified Crops (GMCs)] represents the latest step in this inexorable innovative progression of technology. However, misinformed concern has led to a broad embrace …

Native And Exotic Plant Species Exhibit Similar Population Dynamics During Succession, Scott Meiners

Faculty Research & Creative Activity

A growing body of literature has led to the debate in invasion biology whether exotic species perform within communities differently than native taxa due to inherent advantages. To address this issue, the population dynamics of native and exotic plant species were assessed from a 48-year record of permanent plot data from the Hutcheson Memorial Forest Center (New Jersey, USA) to determine rate of increase, lag time, maximum frequency, and the year of peak frequency. Overall, native and exotic species exhibited very similar population dynamics. Rates of increase and length of lag times were similar between native and exotic taxa but …

Native And Exotic Plant Species Exhibit Similar Population Dynamics During Succession, Scott J. Meiners

Faculty Research & Creative Activity

A growing body of literature has led to the debate in invasion biology whether exotic species perform within communities differently than native taxa due to inherent advantages. To address this issue, the population dynamics of native and exotic plant species were assessed from a 48-year record of permanent plot data from the Hutcheson Memorial Forest Center (New Jersey, USA) to determine rate of increase, lag time, maximum frequency, and the year of peak frequency. Overall, native and exotic species exhibited very similar population dynamics. Rates of increase and length of lag times were similar between native and exotic taxa but …

In Silico Analysis Of Terpene Synthase Genes In Arabidopsis Thaliana, Sam Zwenger, Chhandak Basu

Biological Sciences Faculty Publications

Terpenes are defense chemicals found in wide groups of plants. Terpenoids play a large role in plant development and stress response. The terpene synthase family comprises a diverse set of genes, all which contribute to production of terpenoids. We have used tools of bioinformatics and performed an in silico analysis of developmental and tissue specific terpene synthase gene expression in Arabidopsis thaliana, as well as those expressed due to biotic and abiotic environmental stimuli. Using software tools from Genevestigator, a powerful microarray analyzer, we used multiple tool sets to better understand terpene synthase expression in Arabidopsis, which will hopefully open …

A Geographically Constrained Molecular Phylogeny Of Panamanian Aechmea Species (Bromeliaceae, Subfamily Bromelioideae), Keri Renee Maher

Theses Digitization Project

This study lends strong support to the idea that members of Bromeliaceae have undergone a recent adaptive radiation, and therefore show that, at least in part, diversity in the tropics is due to a fast speciation rate and that the tropics can be a "cradle" for new diversification and exploitation of varying ecological niches through the diversification of ecophysiological traits within a lineage.

Enhancing Fertiliser Use Efficiency For Transplanted Vegetables, Dennis Phillips, Aileen Reid, Gavin D'Adhemar

Horticulture research reports

Horticulture Australia (HAL) Project No. VG04018.

Project VG 04018 ‘Enhancing fertiliser use efficiency for transplanted vegetables’ showed that spraying highly concentrated solutions containing nitrogen over newly transplanted vegetable seedlings for between 14 and 21 days after planting can increase marketable yields by as much as 300% compared to other methods of fertiliser application. Crops that this method has been successfully tested on in this study by the W.A. Department of Agriculture and Food include iceberg and Cos lettuce, broccoli, cauliflower, Chinese cabbage (wombok), celery and cabbage.

The research was conducted on virgin sandy soils of the Swan Coastal Plain near …

Growing Cucumbers In Protected Cultivation In Western Australia, John Burt

All other publications

There are over 20 growers who produce cucumbers under protected cultivation in Western Australia, ranging from Manjimup in the South-West to Geraldton and Carnarvon. They mainly grow these crops hydroponically in greenhouses. There is also some production under shadecloth and some crops are grown in soil. There are two types of cucumbers grown under protected cultivation. The Continental or burpless cucumber is the main type of cucumber and has long fruit, whereas the Lebanese (mini) cucumber has shorter fruit. Compared with field cucumbers, these two types are seedless and do not require pollination to produce fruits. To ensure they are …

Performance Of Dionaea Muscipula As Influenced By Developing Vegetation, James O. Luken

Biology

Demography, growth, and flowering of Dionaea muscipula (Venus' fly trap) were studied during three years (2003–2005) following prescribed fire. Data were collected in permanent quadrats where the developing vegetation was either repeatedly clipped or allowed to grow. Clipping increased light availability at the soil surface. Over the study period, seedling establishment and flowering declined with increasing time since the last prescribed burn. Seedling densities did not differ between clipped and control quadrats, although greater numbers of seedlings grew to adult size in control quadrats and this significantly influenced population size-class structure. Clipping had no effect on leaf number or senescence, …