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Weed in Biological News

Understanding how weeds are resistant to herbicides

... a little over seven hours, University of Illinois weed scientist Patrick Tranel got more genetic ... Tranel believes waterhemp is the first weed to be partially sequenced using this technology. ... that information." Tranel said that identifying weed resistance is an immediate outcome of having the ...

Herbicide diversity needed to keep Roundup effective

... Bill Johnson, a Purdue associate professor of weed science, said changing management practices can ... five-year study were published in the journal weed Science . Marestail, also known as horseweed, was the first weed to develop resistance to glyphosate. Other weeds ...

Biodegradable mulch films on the horizon

... mulch occurred early and exposed the bed for weed growth, creating competition for nutrients ... "The [conventional] LDPE mulch provided 100% weed control in both years, which confirms why this is ... by most vegetable growers," Ngouajio remarked. weed control levels for both thicknesses of the black ...

Methyl bromide alternatives for California strawberry nurseries

... has been the foundation for soilborne disease and weed control in California strawberries. MB, ... the effectiveness and cost efficiency for weed control in lower- and higher-elevation nurseries ... and Christopher Q.Winterbottom noted that weed control in strawberry nurseries is more difficult ...

Organic plant waste proves effective weed control for citrus trees

... materials, have been used extensively for weed control. The downside: synthetic mulches cause ... organic" production. Interest in non-chemical weed control methods has increased in recent years ... Economically and environmentally sustainable weed control alternatives, such as non-synthetic or ...

Sicilian word enters British genetic language

... a close relative of the common British weed Groundsel, that was first brought to the UK 300 ... tracked down a small region of DNA in the British weed that came from its Sicilian relative. This region of DNA modifies the flowers, making the weed more attractive to pollinators. The results ...

'Plant-eating predator to fight superweed is not magic bullet'

... of Biology has been researching the invasive weed since the 1980s. The research continues with PhD ... in the Leicester department established that the weed in Britain was a single clone- making it one of ... week to introduce a biocontrol to eradicate the weed that is plaguing Britain. The natural predator, a ...

Ethanol byproduct produces green results

... a research study on the use of DDGS as a weed deterrent on potted ornamentals. The study ... number of common chickweed and annual bluegrass. weed control was not perfect, but could reduce the ... concluded that DDGS may be useful for reducing weed emergence and growth in container-grown ...

Organic corn: Increasing rotation complexity increases yields

... collected data on crop yields, nitrogen inputs, weed densities, and crop populations from the USDA-ARS ... which rely on legume crops and animal manures. weed competition also contributed to lower corn grain yields in organic systems. For soybean, weed competition alone accounted for differences in ...

Alternatives to ozone-depleting pesticide studied

... a 3-year project to study new methods of weed control in strawberry nurseries. Results of the ... In the study, MB alternatives were evaluated for weed control and plant yields at strawberry nurseries ... crops contributed to inconsistencies in weed control and runner yields at high-elevation ...

Rabbits to the rescue of the reef

... of fish that normally feed on the young weed to such a degree that the weed is no longer kept in check, it can now smother ... afterwards are usually poor. If the weed takes over, youve lost your reef. Prof. ...

Scientists call for urgent research into 'real' impacts of invasive species

... the mealybug. Natural control methods for other weed species such as Mikania micrantha and Water ... used. Among GISPs case studies is the Triffid weed (Chromolaena odorata), a plant native to the ... and grazing. In Ghana the study showed that the weed occupies 59% of all arable lands, and in Ubombo, ...

New hope for horse lovers as effective control for killer ragwort is proposed

... target Ragwort, infecting and killing the weed at a critical growth stage. This spray will ... Ragwort. Ragwort is a common British weed which thrives on wasteland, road verges and railway land. The weed spreads easily to pasture land and is poisonous ...

Book on weeds and invasive plants discusses how to manage them using ecological approaches

... and professionals in plant sciences, agronomy, weed science, and horticulture. Theres something in it ... the subject matter by including chapters on weed demography, interference, methods to study ... competition. It also included three chapters on weed control and for the first time introduced social ...

Climate change may wake up 'sleeper' weeds

... to be active in Australia. "Out there, throughout the nation, are many weed species lying low but with the potential to take off and add to the economic and social burden of weed control," Dr Scott said. "One critical unknown is what these lurking ...

Invasive plants challenge scientists in face of environmental change

... the ability of weedy species to compete with native plants. Classic weed control techniques like pulling, mowing, herbicide treatments, fire and ... plant species in the Boulder region. The project will focus on three weed species viewed as threats to the conservation goals of OSMP, including ...

Golfers and golf courses benefit from the use of native grasses in roughs

... minor irrigation needs and were mowed and applied with herbicide to reduce weed invasion. The first study was planted in the 2006 growing season and was ... receive a pre-emergent herbicide application and consequently had a lot of weed competition. The study in 2007 received a treatment of the herbicide ...

A built-in strategy for transgene containment

... eliminated by a spray of Bentazon, an herbicide commonly used for rice weed control. This technology appears to be quite simple, reliable and inexpensive for implementation. If you use Bentazon for weed control in your rice field, you do not need to worry about any possible ...

Stunting plants' skyward reach could lead to improved yields

... an enzyme found to degrade parts of proteins that control life processes such as stem growth. They will use Arabidopsis thaliana common mustard weed as a plant model. The first plant to have its genome sequenced, Arabidopsis has become the botanical equivalent of the lab mouse in that ...

Early rice harvests ease annual famine in Bangladesh

... the demand for harvest labor, and creating jobs for the landless and income for farmers," he added. New management techniques, and particularly weed management, must be simultaneously adopted with these new practices. According to Dr. M.A. Mazid, head of the BRRI Rangpur station, direct-seeded ...

Researchers describe 'implausible' chemistry that produces herbicidal compound

... phosphinothricin (PT), a bacterial compound that is widely used as an agricultural herbicide. This compound, which is a component of two top-selling weed killers (Liberty and Basta), is effective when used with transgenic crops that have a PT-resistance gene inserted into their DNA. The resistance gene ...

UC Riverside geneticist receives highest honor from Botanical Society of America

... occur in hybrids they will spread readily. Ellstrand has warned that if transgenes confer an advantage to a weed, such as herbicide resistance, that weed will become more difficult to control. His recent research has come to focus on the evolution of invasiveness in plants. He was among the first to ...

Waking up dormant HIV

... hydroxamic acid (SAHA), recently approved as a leukemia drug, has now been shown to 'turn on' latent HIV, making it an attractive candidate to weed out the hidden virus that HAART misses. Matija Peterlin at UCSF and colleagues had previously identified another chemical called HMBA that could ...

BioScience tip sheet, March 2009

... The March 2009 issue of BioScience includes the following peer-reviewed articles: Molecular Biology and Genomics: New Tools for weed Science. Patrick J. Tranel and David P. Horvath. Modern techniques have allowed great advances against weeds, including the development of ...

'Biological control of tropical weeds using arthropods'

... One man's weed is another man's wonder and University of Guam research scientist Dr. Gadi V. P. Reddy has spent much of his career finding environmentally safe ...

Duke software dramatically speeds enzyme design

... algorithm includes a "dead-end elimination" feature that can run though all possible chemical interactions and flexible molecular architectures to weed out scenarios that cannot work. Calculating just one redesign might take up to a week in the 230-processor computer cluster housed in Donald's lab, ...

Gardening gives older adults benefits like hand strength and self-esteem

... "There's a lot of natural motivation in gardening," Shoemaker said. "For one thing, you know there's a plant you've got to go out and water and weed to keep alive. If we get the message out there that older adults can get health benefits from gardening, they'll realize that they don't have to walk ...

Gardening gives older adults benefits like hand strength and self esteem

... "There's a lot of natural motivation in gardening," Shoemaker said. "For one thing, you know there's a plant you've got to go out and water and weed to keep alive. If we get the message out there that older adults can get health benefits from gardening, they'll realize that they don't have to walk ...

Climate change's impact on invasive plants in Western US may create restoration opportunities

... is likely to expand invasion risk from yellow starthistle in California and Nevada and lands currently occupied by invasive populations of the weed in California, Oregon and Washington are unlikely to become unsuitable for the species; hence, they have low potential for restoration. Tamarisk ...

Springer expands its portfolio in plant sciences with Phytoparasitica

... publishes original research contributions on the biological, chemical and molecular aspects of entomology, plant pathology, virology, nematology and weed sciences, including insecticides, fungicides, herbicides and other biocides. Emphasis is on new approaches in the control of pests and diseases. ...

Studies offer guide as protein interaction mapping comes of age

... interactions are "detected" that haven't really taken place -- and false negatives in which interactions that have occurred fail to be found. To weed them out, the new framework examines experimental methods from the standpoint of precision, sensitivity, and completeness. "The framework approach ...

Mustard seed meal suppresses weeds in container-grown ornamentals

... percent nitrogen and contributes to the nutrient needs of the crop." "MSM has the potential to be developed as a selective herbicide for annual weed control in ornamental containers and further research could identify additional tolerant and susceptible species of both weeds and ornamentals", ...

How are herbicides discovered?

... pathway inside a weed. The explosion of new biotech information about DNA sequences and protein functions may allow this new method to produce weed killers that are effective and yet safe for our environment. "I predict that the recent revolution in biotechnology information will significantly ...

ESA to feature wide range of UW-Madison presentations

... for conservation potential in central sands Wisconsin agroecosystems (Tuesday, Aug. 5 at 11:10 a.m.) COS 78-1, Influence of non-crop habitat on weed seed predation within potato crops (Thursday, Aug. 7 at 8:00 a.m.) COS 78-5, Applied plant ecology in an agricultural landscape: Linking potato ...

U of T discovers environmental factors linked to sex ratio of plants

... on the genetics and evolution of plant reproduction. His pioneering work has had a profound influence on the understanding of biological invasions, weed management strategies and conservation biology. "Our results demonstrate for the first time that demographic aspects of the mating environment of ...

Biofuels and biodiversity don't mix, ecologists warn

... butterfly and 103 bird species in neighbouring undisturbed rain forest. Management techniques such as encouraging epiphytes, beneficial plants or weed cover in palm oil plantations increased species richness by only 0.4 species for butterflies and 2.2 species for birds. Preserving remaining natural ...

Plant biologists discover unexpected proteins affecting small RNAs

... Cell, shows that the RNA world is more complex than imagined. Ecker and colleagues tinkered with factors that process mRNAs in the mustard weed Arabidopsis thaliana and observed affects on short, or small RNAs. Their findings could impact fields as diverse as plant pathology and cancer ...

Establishing faster-growing, durable football fields

... needed to be planted the preceding summer. Dormant seedings did not perform well, leading to relatively poor ground cover and significantly higher weed populations. Summarizing the impact of his teams research, Stier said: The research outcomes can allow school systems to prepare better bids for ...

Pathogen virulence proteins suppress plant immunity

... VBI Professor Brett Tyler and members of his research group, along with researchers from Virginia Techs Department of Plant Pathology, Physiology and weed Science, Nanjing Agricultural University in China, and Wageningen University in The Netherlands, examined the function of the virulence (or effector) ...

Early exposure to common weed killer impairs amphibian development

... early stages of life, according to research by Tufts University biologists. The results present a more comprehensive picture of how this common weed killer once thought to be harmless to animals -- disrupts growth of vital organs in amphibians during multiple growth periods. In recent years, ...
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