Weed Science Commons^™

Detection And Epidemic Dynamic Of Tocv And Ccyv With Bemisia Tabaci And Weed In Hainan Of China, Xin Tang, Xiaobin Shi, Deyong Zhang, Fan Li, Fei Yan, Youjun Zhang, Yong Liu, Xuguo Zhou

Entomology Faculty Publications

Background: In recent years, two of the crinivirus, Tomato chlorosis virus (ToCV) and Cucurbit chlorotic yellows virus (CCYV) have gained increasing attention due to their rapid spread and devastating impacts on vegetable production worldwide. Both of these viruses are transmitted by the sweet potato whitefly, Bemisia tabaci (Gennadius), in a semi-persistent manner. Up to now, there is still lack of report in Hainan, the south of China.

Methods: We used observational and experimental methods to explore the prevalence and incidence dynamic of CCYV and ToCV transmitted by whiteflies in Hainan of China.

Results: In 2016, the chlorosis symptom was observed …

Pergesaran Populiasi Gulma Pada Olah Tanah Dan Pengendalian Gulma Yang Berbeda Pada Tanaman, Uum Umiyati, Denny Kurniadie

Jurnal Kultivasi

Tujuan dari perobaan ini adalah mengetahui pergeseran populasi gulma pada olah tanah dan pengendalian gulma yang berbeda. Percobaan dilakukan dari bulan Juni – Agustus 2016 di UPTD Balai Pengembangan Benih Palawija (BPBP) Desa Barepan Kabupaten Cirebon. Rancangan yang digunakan adalah Rancangan Acak dengan 6 kombinasi perlakuan yang diulang sebanyak 4 kali. Perlakuan tersebut adalah A = Tanpa Olah Tanah dan pengendalian gulma dengan herbisida, B = Tanpa Olah Tanah dan pengendalian gulma secara mekanis, C = Tanpa Olah Tanah dan tanpa pengendalian gulma, D = Olah Tanah Sempurna dan pengendalian gulma dengan herbisida, E = Olah Tanah Sempurna dan pengendalian …

Pengaruh Berbagai Jenis Surfaktan Pada Herbisida Glufosinat Terhadap Pengendalian Gulma Dan Hasil Tanaman Jagung (Zea Mays L.) Di Jatinangor, Denny Kurniadie, Yayan Sumekar, Intan Buana

Jurnal Kultivasi

Penambahan surfaktan diduga dapat mengoptimalkan pengendalian gulma menggunakan herbisida. Penelitian ini bertujuan untuk mengetahui pengaruh jenis dan konsentrasi surfaktan pada pengendalian kimia menggunakan herbisida Glufosinat terhadap gulma di pertanaman jagung (Zea mays L.). Penelitian ini dilakukan dari bulan September sampai dengan Desember 2016 di Kebun Percobaan Ciparanje Unpad. Rancangan perlakuan yang digunakan adalah Rancangan Acak Kelompok (RAK) dengan 9 perlakuan yaitu: Glufosinate + surfaktan nonionik 15%; Glufosinate + surfaktan anionik 15%; Glufosinate + surfaktan kationik 15%; Glufosinate; Glufosinate + surfaktan nonionik 20%; Glufosinate + surfaktan anionik 20%; Glufosinate + surfaktan kationik 20%; Penyiangan Mekanis; Kontrol (tanpa perlakuan); diulang 3 kali …

Comparison Of Understory Chemical And Mechanical Treatments To Promote Regeneration Of Desirable Forestland Species, Rebecca Rachael Tyler

Graduate Theses/Dissertations

Invasive woody plants and trees can have a negative impact on desired tree regeneration in the understory of forest stands, and forage density in grassland sites. An assessment of chemical and mechanical treatments on woody plants in the understory of forestland and in grassland is needed. Two experiments were set up in two forest stands and in two grassland/forest edge sites, with two treatment times during the growing season in the first year of the study. On the forestland sites, chemical and mechanical treatments were applied on undesired woody plants to see if they effect the regeneration of desired tree …

The Effects Of Isoprene Emission From Native And Invasive Trees On Local Air Quality, Aarti P. Mistry

DePaul Discoveries

Biogenic volatile organic compounds (BVOC) are the second-most abundant reactive gasses emitted into the atmosphere by the biosphere. Isoprene is a BVOC produced by the process of photosynthesis from vegetation and is emitted from plant leaves. Isoprene is a hydrocarbon that combines with oxides of nitrogen in the atmosphere to create ozone in the troposphere, an air pollutant. Invasive trees alter ecosystems and affect native tree populations. Invasive tree species in the Chicagoland area are outcompeting native tree species and expanding rapidly. The effect of isoprene emissions on air quality is a well-researched area in the atmospheric science community, however, …

Skeleton Weed Program: Annual Report To Grain Growers 2016/2017, Department Of Primary Industries And Regional Development, Western Australia

Biosecurity published reports

All program milestones have been met and the program has been delivered under budget.

As stated in the 2015/16 Annual Report – the program budget has been set at its current level of (approximately) $3.5m for the foreseeable future and program activities need to be framed within this parameter.

The Grains, Seeds and Hay Industry Management Committee (GSH IMC) believes the current program is delivering the best value for the funding provided and is achieving the Project Outcomes of eradication (where possible), management (on infested sites), and limiting the spread of skeleton weed across the wheatbelt.

There has been no …

Pheasant Response To Lead Ingestion, Travis J. Runia, Alex J. Solem

The Prairie Naturalist

Lead is toxic to all vertebrate species and ingestion of spent lead pellets from hunting is the primary method of exposure in birds. Both acute and chronic effects occur in response to lead ingestion including death, weight loss, and reduced body function, but the effect is highly variable among species. Most research has focused on lead ingestion impacts on waterfowl, but less is known about the effects of lead ingestion by upland game such as ring-necked pheasants (Phasianus colchicus). We gavage- fed zero, one, or three lead pellets to 90 (n = 30/group) captive-raised adult hen pheasants and monitored survival …

Long-Term Changes In Canada Goose Nest Success And Nest Densities At An Iowa Wetland Complex, Brenna N. Ness, Robert W. Klaver, Guy G. Zenner

The Prairie Naturalist

Giant Canada geese (Branta canadensis maxima) were extirpated from Iowa by the early 1900s due to unregulated hunting, egg gathering, and wetland drainage in the nineteenth century (Bishop 1978). Ef- forts to reintroduce Canada geese in Iowa began in 1964 (Bishop and Howing 1972) and involved releasing flightless adults and goslings at nearly 30 sites across the state (Zenner and LaGrange 1998a). In 1972, 13 flightless pairs were released at Rice Lake Wildlife Management Area (WMA; Bishop 1978). By 1989, the breeding population of Canada geese at Rice Lake WMA had increased to 420 nesting adults (G. G. Zenner, Iowa …

Assessing Parturition Date Synchrony For North Dakota Ungulates, Eric S. Michel, Jonathan A. Jenks, William F. Jensen

The Prairie Naturalist

Reproductive parameters such as conception date, and therefore parturition date, influence offspring characteristics such as sex ratio and birth mass. For example, late-conceiving reindeer (Rangifer tarandus) produced more female than male offspring compared to those who conceived early (Holand et al. 2006). Females that conceive later and therefore give birth later also can produce lighter offspring compared to those who conceive early (Schwartz et al. 1994, Holand et al. 2006). Because birth mass is positively related to adult body mass (Michel et al. 2015), conception and parturition date likely affect adult phenotype. In turn, this may influence survival because heavy …

Notes: Examining The Potential Competitive Effects Of Ventenata Dubia On Annual And Perennial Grasses, Shawn Mckay, Lesley R. Morris, Christopher E. Morris, Elizabeth A. Leger

The Prairie Naturalist

Portions of the United States are becoming increasingly dominated by annual species, with cheatgrass (Bromus tectorum L.) and medusahead (Taeniatherum caput-medusae [L.] Nevski) as the most common and well-known invaders (Bansal et al. 2014). Other invasive annual species also are present and increasing in abundance, including ventenata (Ventenata dubia [Leers] Coss.), an invasive annual grass that has been expanding within the Pacific Northwest, Great Basin, and Great Plains regions of the United States. Ventenata was first reported in North America in 1952 in Washington (Old and Callihan 1987) and has since spread to 7 western states in the USA (CA, …

Book Reviews: American Serengeti: The Last Big Animals Of The Great Plains. Dan Flores., Daniel S. Licht

The Prairie Naturalist

Before describing what Flores’ book is, I must state what it is not. It is not a technical book designed for scholarly readers. Sources are not fully cited, and the bibliography is of limited scope. Nor is it a comprehensive book of all the megafauna of the Great Plains. Although chapters are devoted to extant species such as American bison (Bison bison), pronghorn (Antilocapra americana), and coyote (Canis latrans), there are only passing references to mule and white-tailed deer (Odocoileus hemionus and O. virginianus, respectively), elk (Cervus canadensis), and bighorn sheep (Ovis canadensis). Rather, Flores devotes chapters to grizzly bears …

Diel And Monthly Movement Rates By Migratory And Resident Female Pronghorn, Paul F. Jones, T. Andrew Hurly, Chelsea Jensen, Karl Zimmer, Andrew Jakes

The Prairie Naturalist

Animal movement patterns are variable, with certain species primarily being diurnal and others nocturnal. Pronghorn (Antilocapra americana) are regarded as diurnal animals moving predominately during daylight hours. Anecdotal accounts, however, suggest that pronghorn move during the night but the extent, frequency, and importance of these nocturnal movement behaviors are unknown. To evaluate movements, we combined global positioning system relocation data from collared female pronghorn in the Northern Sagebrush Steppe between 2003 and 2007 with sunrise/sunset data within a geographical information system platform. We assessed whether mean and maximum movement rates were influenced by diel period (dawn, day, dusk, and night), …

The Pitfalls Of Data Analysis, Christopher N. Jacques

The Prairie Naturalist

Greetings GPNSS members! I hope summer finds you well and enjoying the Great Plains in some way, whether that be starting a new field season, a long-overdue break from the office, or planning your next family vacation. For me, transitioning away from the demands of the Spring 2017 semester to data analyses and preparation of my own manuscripts are particularly exciting (well, as exciting as “office life” can be!). Over the past month, I have initiated a number of grandiose summer objectives, most of which include analysis or in some instances, re-analysis of data to address concerns raised during peer-review. …

The Prairie Naturalist: The Journal Of The Great Plains Natural Science Society Volume 49 No. 1

The Prairie Naturalist

TABLE OF CONTENTS

1 EDITOR’S NOTE

RESEARCH ARTICLES

3 Diel and Monthly Movement Rates by Migratory and Resident Female Pronghorn Paul F. Jones, T. Andrew Hurley, Chelsea Jensen, Karl Zimmer, and Andrew Jakes

13 Pheasant Response to Lead Ingestion Travis J. Runia and Alex J. Solem

NOTES

19 Examining the Potential Competitive Effects of Ventenata dubia on Annual and Perennial Grasses Shawn McKay, Lesley R. Morris, Christopher E. Morris, and Elizabeth A. Leger

23 Adult Red-Headed Woodpecker Interaction with Bullsnake After Arboreal Nest Depradation Brittany J. Yohannes and James L. Howitz

26 Breeding Trumpeter Swans in Northeastern North Dakota Mark …

Adult Red-Headed Woodpecker Interaction With Bullsnake After Arboreal Nest Depredation, Brittney J. Yohannes, James L. Howitz

The Prairie Naturalist

Nest success rates often are higher among cavity-nesting birds than those that nest in open cups or on the ground. Among cavity-nesting birds, woodpeckers have some of the highest rates of nest success. A review of woodpecker nesting ecology across species documented nest success ranging from 0.42 to 1.00 with a median of 0.80 (n = 84 populations), and that predation was low, ranging from 0.00 to 0.35 with a median of 0.13 (n = 33 populations). The constrained opening to a cavity nest limits predation to relatively small animals or those able to break open cavity walls. …

Breeding Trumpeter Swans In Northeast- Ern North Dakota, Mark R. Fisher, Matthew D. Sprenger, Chris R. Roed, David O. Lambeth

The Prairie Naturalist

The trumpeter swan (Cygnus buccinator) is North America’s largest waterfowl species and breeds in wetland habitats across the northern United States, Alaska and Canada. Summer observations by ornithologists, including those of John James Audubon in 1843, indicated a substantial number of trumpeter swans were breeding in North Dakota prior to European settlement. However, the species was extirpated by the late 1800s and there were no subsequent breeding records for over a century (Stewart 1975). Since 2007, 5 recent nesting records indicate that trumpeter swan has returned as a regular breeding species in North Dakota.

A continental range-wide breeding trumpeter swan …

Erratum

The Prairie Naturalist

In the June 2016 issue (48:1, page 56), the Editorial Staff inadvertently omitted corrections provided by the corresponding author prior to publication. In the second paragraph of the left column (i.e., 5 lines from the bottom), “is” should be replaced with “could be.” Similarly, in the right column (9 lines from the top), “In additional” should be replaced with “In addition.” On page 58, the following text should be placed after “institutions” in the Appendix caption: “University of Central Missouri (CMSU), Truman State University (TSU).” Lastly, within the appendix, all instances of MHP should be replaced with FHSM and “OF” …

Use Of Satellite Trap Transmitters In Capturing Mountain Lions, Randy D. Johnson, Jonathan A. Jenks, Stephanie A. Tucker

The Prairie Naturalist

The use of safe and humane methods for the capture of wild animals is imperative in wildlife research, wildlife damage management, and feral animal control. When capturing animals successfully and humanely, several items must be addressed, including animal safety, personnel safety, non-target captures, and cost (Sikes et al. 2016). Additionally, public pressures against the use of traps have led to significant changes in trapping regulations across North America and beyond (Andelt et al. 1999, Darrow and Shivik 2008) and can place research projects at risk to loss of Institutional Animal Care and Use Committee (IACUC) approval (Larkin et al. 2003). …

Size-Dependent Patterns Of Reproductive Investment In The North American Invasive Plant Species Triadica Sebifera (L.) Small (Euphorbiaceae), Courtney H. Babin

LSU New Orleans Theses and Dissertations

Knowledge of sex allocation trade-offs with tree growth in insect-pollinated woody plants is limited, particularly in invasive plants. This study examined patterns of growth and reproductive investment in a North American invasive plant species, Triadica sebifera, I hypothesized that the energy limitations of smaller trees may result in the production of more male reproductive structures that are energetically less costly. Diameter at breast height was a significant predictor of seed and catkin mass and regression can describe these relationships across sites. Seed and catkin mass were positively correlated across sites. The relationship between the seed mass:catkin mass ratio and …

The Effect Of Spray Parameters On The Application Of Enlist Duo, Matthew R. Nelson

Department of Agronomy and Horticulture: Dissertations, Theses, and Student Research

The emergence of new weed control challenges, along with shifts in weed management strategies and cultural practices, has resulted in an increased reliance on chemical weed control in United States (US) cropping systems. As a result, numerous weed species have evolved resistance to herbicides such as glyphosate, thus prompting the development of new weed control systems designed to aid growers in managing resistant weeds. While these new weed control options may give growers additional management options, the high sensitivity of broadleaf crops, fruits, and vegetables to products containing 2,4-D or dicamba increases the potential for herbicide drift resulting from application …

Decision Support Software For Palmer Amaranth Weed Control, Karen Renee Lindsay

Graduate Theses and Dissertations

Herbicide-resistant Palmer amaranth [Amaranthus palmeri (S.) Wats.] has been identified as one of the most troublesome weeds, specifically for corn (Zea mays L.), cotton (Gossypium hirsutum L.), and soybean [Glycine max (L.) Merr.] producers in the southern United States. The use of herbicide technology remains the most widely used method of weed control, despite the evolution of herbicide-resistant Palmer amaranth. Therefore, a need currently exists for research and extension education to encourage the adoption of Integrated Pest Management (IPM) to address the problem of herbicide-resistant Palmer amaranth in the southern United States. By equipping crop producers, educators, and weed management …

Value Of Cover Crops In Suppressing Weeds And Protecting Cotton Yields And Likelihood Of Residual Herbicide Carryover To Cover Crops, Matheus Gabriel Palhano

Graduate Theses and Dissertations

Weed-resistance management has become a topic of concern for modern agriculture. Cost related to herbicide usage has increased greatly due to evolution and proliferation of resistant weeds. Therefore, experiments were conducted to investigate the potential for using cover crops to suppress problematic weeds in cotton as well as chemical options for cover crop dessication, and sensitivity of cover crops to residual herbicides were evaluated. No differences were observed for cereal rye biomass production and consequently weed suppression between broadcast and drilled planting methods. Total amount of cover crop biomass was vital to effectively suppress weeds. Hence, of the cover crops …

Evaluation Of Benzobicyclon For Use In Midsouthern Rice (Oryza Sativa) Systems, Mason Luke Young

Graduate Theses and Dissertations

A new herbicide site of action (SOA) is needed by rice (Oryza sativa L.) producers in the Midsouth for the control of problematic and herbicide-resistant weeds. Currently, six problematic weeds are relevant to Midsouthern rice producers because of resistance to at least one SOA, if not more. Gowan Company is in the process of commercializing benzobicyclon for use in Midsouthern rice systems. Benzobicyclon, a Group 27 post-flood herbicide, controls a broad spectrum of aquatics, broadleaves, grasses, and sedges, including those currently resistant to Group 2 herbicides. This will be the first 4-hydroxyphenylpyruvate dioxygenase (HPPD)-inhibiting herbicide commercially available in US rice …

Evaluation Of Safening Effects To Herbicides Conferred Via Insecticide Seed Treatments In Soybean (Glycine Max) And Grain Sorghum (Sorghum Bicolor), Nicholas Robert Steppig

Graduate Theses and Dissertations

Interactions between herbicides and insecticides in crop production have been documented for a number of years. Research has shown that applications of some organophosphate insecticides at planting can reduce cotton injury following applications of the soil-applied herbicide clomazone. Additionally, recent research has shown that, when applied as seed treatments prior to planting, some neonicotinoid insecticides can safen rice to drift from both glyphosate and imazethapyr. Since insecticide seed treatments are commonly used in many crop production systems throughout the Midsouth, exploring their ability to reduce injury from herbicides in other crops besides rice is of great interest. Presently no research …

Pertumbuhan Dan Hasil Tanaman Jagung (Zea Mays L.) Toleran Herbisida Akibat Pemberian Berbagai Dosis Herbisida Kalium Glifosat, Agus Wahyudin, Ruminta, S. A. Nursaripah

Jurnal Kultivasi

Penelitian ini bertujuan untuk mengetahui pengaruh herbisida kalium glifosat terhadap pertumbuhan dan hasil tanaman Jagung toleran herbisida glifosat serta mencari dosis terendah yang dapat digunakan dalam budidaya jagung toleran herbisida. Percobaan dilaksanakan di Kebun Percobaan Ciparanje Fakultas Pertanian Universitas Padjadjaran, Jatinangor, Kabupaten Sumedang, Jawa Barat dengan ketinggian tempat 750 meter di atas permukaan laut dan ordo tanah Inceptisols, curah hujan rata-rata termasuk tipe C3 menurut Oldeman, dan temperatur udara berkisar antara 22,23° - 26,47°C. Percobaan dilakukan dari bulan Desember 2014 sampai April 2015. Metode percobaan yang digunakan adalah Rancangan Acak Kelompok yang terdiri dari 8 perlakuan dan diulang sebanyak tiga …

Surveying The Distributions Of Melaleuca Quinquenervia, Psidium Cattleianum, And Litsea Glutinosa At Analalava Special Reserve, Hanusia Higgins

Independent Study Project (ISP) Collection

This study surveyed the distributions of three invasive plant species, Melaleuca quinquenervia, Psidium cattleianum, and Litsea glutinosa at the Analalava Special Reserve in Mahavelona, Madagascar. Analalava is a 229-hectare degraded patch of low-elevation humid forest on the northeast coast of Madagascar, and one of the last forest fragments remaining in the region. It is a haven for biodiversity, containing 343 recorded species of plants, 12 of which are locally endemic. Invasive species are considered the second-most significant threat to biodiversity, both worldwide and specifically at Analalava. Based on a systematic transect survey of these three targeted invasive species, their distributions …

Propelled Abrasive Grit Applications For Weed Management In Transitional Corn Grain Production, Mauricio Enzo-Barradas, Claire N. Friedrichsen, Frank Forcella, Dan Humberg, Sharon A. Clay

Agronomy, Horticulture and Plant Science Faculty Publications

Weed control is challenging to farmers who are transitioning from production systems that use synthetic herbicides to organic systems. A 2-year field study examined air-propelled corncob grit abrasion for in-row weed control efficacy and effect on corn yield. Grit was applied based on corn vegetative developmental stages with one (V1, V3 or V5), two (V1 + V3, V1 + V5, or V3 + V5), or three (V1 + V3 + V5) applications. Flame-weeding or cultivation was used after the V5 application for between-row weed control. Grit applications decreased in-row weed densities by about 60% (α = 0.05) and biomass up …

Invasion Dynamics Of The Exotic Liana Euonymus Fortunei (Turcz.) Hand.-Mazz. (Wintercreeper), Todd J. Rounsaville

Theses and Dissertations--Biology

Elevated atmospheric CO₂ has been implicated as a driver of increased liana abundance worldwide. Known as disturbance creators and beneficiaries, lianas possess the potential to significantly influence forest ecosystems. I investigated the early-invasion dynamics of Euonymus fortunei (wintercreeper), an evergreen liana that is invading forests in eastern North America, disrupting native plant communities and ecosystem functions.

Wintercreeper is widely cultivated as an ornamental groundcover, frequently invading natural areas via asexual stem growth. Invasion of remote natural areas is dependent upon seed transport and may occur less frequently. I examined the mechanisms of seed dormancy by conducting a ‘move-along’ experiment …

Diversity And Evolution Of Fruits In Cuscuta (Dodders; Convolvulaceae), Anna Ho

Theses and Dissertations (Comprehensive)

Cuscuta (dodder) is a genus of roughly 200 species of obligate stem parasites with sub-cosmopolitan distribution. The fruit, generally regarded as a capsule, has a thin pericarp containing one to four seeds and opening at the base (circumscissile dehiscence; DE), or remaining closed (indehiscent; IN). IN has evolved multiple times in Cuscuta from DE, and is most common in the North American clades of subgenus Grammica. In addition, some species produce fruits that open irregularly. Characteristics pertaining to the fruits of Cuscuta are important as their seeds contribute most to their distribution and prevalence across the globe, and their reduced …

Opuntioid Cacti Management Guide: Best Practice Information For Austrocylindropuntia, Cylindropuntia And Opuntia Species In Australia, Department Of Primary Industries And Regional Development, Western Australia

Biosecurity published reports

Key points:

• Australia does not have any native cacti.
• Opuntioid cacti impact on Australia environmentally, agriculturally and aesthetically, as well as posing a risk to animal welfare and human safety.
• Invasive cacti are drought resistant and hardy, surviving in low rainfall environments.
• All species spread vegetatively through the rooting of cladodes (stem segments), fruits or flowers. Some species also spread by seed.
• Opuntioid cacti vary significantly in their form and habit, ranging from low-growing shrubs under 50 cm to erect trees up to approximately 6 m tall.
• Australian rangelands are especially vulnerable to cacti invasion.
• The cost of control often …