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... In 1998, Hadroplontus (formerly Ceutorhynchus) litura, a stem-mining weevil, was introduced into a limited area in Minnesota for the biological control of Canada thistle, Cirsium arvense. Although showing a preference for C. arvense, initial host range testing in the 1960s indicated H. litura attacked other native Cirsium species. Before promoting or augmenting biocontrol with H. litura in Minneso ...
... Decomposition rates of an invasive plant litter in native-species communities can be slower, since decomposers are not adapted to the litter of the invasive species. We have compared rates of plant decomposition and the structure of arthropod communities during the incubation of the litter of the invasive giant goldenrod Solidago gigantea (Asteraceae) and three native species (Urtica dioica, Cirsi ...
... Parasitoids and predators exploiting similar food resource make aphidophagous guilds especially favourable systems for studying intraguild predation, but ants as third parties protect aphids against their natural enemies and in return obtain carbohydrate-rich honeydew as a nutritional resource. A field experiment on the interrelationship among aphids, ants and predators/parasitoids was conducted o ...
Astragalus sinicus; Centaurea cyanus; Cirsium arvense; Coreopsis grandiflora; Halictidae; Lepidoptera; Muscidae; Nandina domestica; Oenothera speciosa; Rosa chinensis; case studies; ecological balance; flowers; green infrastructure; introduced species; landscapes; pollination; pollinators; species richness; suburban areas; urbanization; China
Abstract:
... Urbanization is one of the primary forces driving worldwide pollinator decline. Moderate urban expansion with appropriate green space planning can help in maintaining pollinator diversity and pollination service. We investigated the relative effects of landscape and local factors on the diversity of flower-visitor functional groups in a moderately urbanized city, Wuhan, located in central China. W ...
... Dibenzylbutyrolactone-type lignans are phenolic compounds of medical importance. The purpose of the study was to determine the effects of two such lignans, arctigenin and trachelogenin on the motility of isolated rat ileum and obtain indications on their mechanism of action. They were isolated from Arctium lappa and Cirsium arvense, respectively, which have been used traditionally to treat gastroi ...
... The degradation of unused agricultural lands is noted to cause significant damage to agricultural production such as plot overgrowing with weeds, blackened surface layer emergence, the existing microrelief disturbance, soil self- compaction and acidification, soil infiltration properties deterioration, and water erosion. (Research purpose) The research aims to determine the technological and physi ...
... Cirsium arvense (Canada thistle), a perennial herb native to Eurasia, has been introduced to temperate regions and is a serious weed for arable and pastoral agriculture (Schroeder et al. 1993). C. arvense reproduces both clonally and sexually. It is highly competitive, causes yield reductions in crops such as wheat, alfalfa, and sugarbeet, and can reduce forage availability and production (Wilson ...
... We reviewed the timing of the peak rate of emergence for 15 problematic weed species as well as ways to use this knowledge to improve control. Much of the previous literature modeled emergence based on growing-degree-days. For these models, we input average temperature data from several zones of Northeast USA. Within species, model-predicted peak emergence in the warmest and coolest zones differed ...
... Elymus repens (L.) Gould), Cirsium arvense (L.) Scop. and Sonchus arvensis L. are important arable creeping perennial weeds in Europe. These are clonal plants with subterranean reproductive organs (E. repens, rhizomes, the two dicots, horizontal creeping roots) sprouting from ramets. We tested the sprouting ability and early growth of ramet sprouts at temperatures typical for Nordic autumn climate ...
Cirsium arvense; Cleridae; Pteromalus; Urophora cardui; biomass; fauna; immatures; insect density; insects; new host records; parasitoids; Great Plains region; North Dakota
Abstract:
... We surveyed the insect fauna associated with Urophora cardui L. (Diptera: Tephritidae) galls on Canada thistle, Cirsium arvense L. (Asterales, Asteraceae), in parts of the northern Great Plains, U.S., by field-collecting galls and rearing or dissecting out the insects. We also examined the relationships between gall biomass and insect density and biomass. Urophora cardui were widespread, and the g ...
Cirsium arvense; Hordeum vulgare; autumn; cover crops; crop yield; mechanical weed control; research; rhizosphere; spring barley; tillage; topsoil; Northern European region
Abstract:
... Weed control is important to improve crop yield in organic farming. In Northern Europe, the use of mechanical weed control restricts the ability to use green manure-cover crops that could be a key source of N supply. In a two-year experiment repeated twice, the objective of this study was to compare the effect of cover crop- and autumn tillage-based systems on N uptake of the succeeding barley cro ...
... Agricultural intensification has been implicated in global biodiversity declines. In the European Union, agri‐environmental schemes are designed to address this. For pollinating insects, funding has been provided to sow wildflower mixes. However, previous research indicates that a suite of agricultural weeds are also of great importance to pollinators. Here, we compare the biodiversity associated ...
... Alternaria helianthiinficiens previously has been found as a pathogen of sunflower and cosmos in northern hemisphere. This fungus comprises a monotypic lineage which obviously is a separate group that has not been formally described as a section. Information about morphology, distribution, and pathogenic characters of this species is very limited. During this study, two taxonomic novelties were en ...
... A new species, Botrytis polygoni, was isolated from several species of Polygonaceae in 2011 and 2012 in Tongwei County, Gansu Province, China. The species infects Fagopyrum esculentum, F. tataricum, and Fallopia convolvulus, causing brown leaf spots and large blotches with concentric rings in the field. Botrytis polygoni is morphologically characterized by conidia spherical, unicellular, hyaline t ...
... Potatoes are one of the most responsive crops for grooming techniques since in the period from seedlings before closing rows are easily suppressed by weeds that take away nutrients, water, light from it. The factor that causes high harm to potatoes is weed. By absorbing a large number of nutrients and moisture from the soil, weeds inhibit the growth and development of plants, reducing their potent ...
Borago officinalis; Centaurea cyanus; Cirsium arvense; Cosmos bipinnatus; Tagetes erecta; Verbena; agroecosystems; biological control; economic sustainability; eggplants; field experimentation; flowers; habitats; insecticides; natural enemies; pest control
Abstract:
... Flower strips can play an important role in agro-ecosystems by supporting populations of pests’ natural enemies, thereby enhancing biological control. However, few studies have considered enhancing habitat for natural enemies around greenhouses. We conducted a two-year field experiment to (i) identify potential flowering species enhancing natural enemy populations but not pest populations; and (ii ...
... Throughout Europe, Cirsium arvense is the most problematic perennial weed in arable crops, whether managed under organic or conventional agriculture. Non-chemical control methods are limited with partial efficacy. Knowledge is missing on their effect across a wide gradient of cropping systems and pedoclimates. To achieve effective Cirsium arvense management ensuring crop productivity while limitin ...
... QUESTIONS: A range of landscape and local environmental factors, including invasion, interact with species functional diversity and trait composition to shape biodiversity patterns and ecosystem function of wetlands. A trait‐based, mechanistic understanding of community assembly holds promise for wetland conservation, but this has been rarely examined across scales. We examined: (a) the relative i ...
... In order to identify qualitative markers of a potential mycoherbicide against Canada thistle based on the mycelium of the fungus Stagonospora cirsii VIZR 1.41, changes in its pathogenicity and lipid profiles during submerged cultivation on liquid sucrose-soybean medium were analyzed. The fatty-acid composition of major lipids and the identification of molecular species of structural lipids were de ...
... New data platforms have made satellite data freely available and farmers can now produce variable rate application (VRA) maps for nitrogen fertilisers and other inputs based on satellite images. The data platforms are currently attracting attention for site-specific weed management because they are free and user-friendly. Satellite imagery is mainly relevant for detecting large, dense weed patches ...
... Infection and delayed wound healing are two major serious complications related to traumatic injuries and cause a significant burden to patients and society. Most currently available drug delivery materials typically carry a single drug, lack protection from drug loading, and face challenges in on-demand and precisely controlled drug release. Here, we report a flower (Cirsium arvense)-inspired cap ...
... The effects of aqueous extracts from aboveground parts of Solidago canadensis L. as well as from dominant species of four main succession stages on the degraded forest soils of the Kemerovo region (Filipendula ulmaria, Chamaenerion angustifolium, Cirsium setosum, Poa pratensis) on the germinating capacity and speed of Lepidium sativum seeds were investigated. It was showed that Solidago canadensis ...
... The biological and economic efficiency of the use of the new, combined herbicide Uniko, CSC, (100 g/L fluroxypyr + 2.5 g/L florasulam) at application rates of 1.0, 1.25, 1.5, and 1.75 L/ha is studied in field trials. Cereal crops were sprayed in three stages: tillering/early booting, flag leaf stage, and heading (the experiment using herbicides at the latest stage was performed in Russia for the f ...
... To develop a potential bio herbicide, herbicide activity and crop safety of fungal strain HZ-31 isolated from naturally infected weed Cirsium arvense (L.) Scop. were investigated. The study was conducted in vitro and in vivo during the summers of 2017 and 2018. Strain HZ-31 showed broad-spectrum herbicidal activity, both in vitro and in vivo, when targeting Elsholtzia densa Benth., Polygonum lapat ...
Anaphalis margaritacea; Cercopidae; Cirsium arvense; Philaenus spumarius; Solidago; adulthood; body size; habitats; host plants; insects; life history; meadows; nymphs; New Brunswick
Abstract:
... Philaenus spumarius (Meadow Spittlebug, Homoptera: Cercopoidea) is a cosmopolitan generalist insect that feeds on a wide repertoire of host plants in the field. We studied density and growth of Meadow Spittlebugs on a range of host plants on Kent Island, a boreal island in the Bay of Fundy, NB, Canada. The highest spittlebug densities were on Cirsium arvense (Canadian Thistle), although spittlebug ...
... The perennial weed, Cirsium arvense (creeping, Canada or Californian thistle), is notorious for its ability to tolerate defoliation by mowing, herbivores or herbicides. The tolerance of 36 genotypes of C. arvense was examined by establishing pairs of clonal replicates that were assigned to a clipped or unclipped treatment. Three clippings were applied from spring to early summer to simulate repeat ...
... Trade-offs between performance and tolerance of abiotic and biotic stress have been proposed to explain both the success of invasive species and frequently observed size differences between native and introduced populations. Canada thistle seeds collected from across the introduced North American and the native European range were grown in benign and stressful conditions (nutrient stress, shading, ...
Cirsium arvense; Puccinia; biological control; biomass; forage; fungi; herbivores; hormones; indigenous species; invasive species; jasmonic acid; pastures; pathogens; rangelands; salicylic acid; weeds; New Zealand; North America; Southern European region
Abstract:
... Cirsium arvense, or Canada thistle, is one of the most detrimental weeds for agricultural production. Native to south-eastern Europe, the species is now found in Many parts of Asia, North America and Australasia. In North America and New Zealand the species is considered invasive, displacing native vegetation and reducing the quality of forage in rangelands and pastures. The autoecious fungus, Puc ...
... Nonnative invasive species are a threat to biodiversity worldwide. One common method for invasive species management is biological control (biocontrol). However, biocontrol can have unanticipated nontarget effects on native species. Cirsium pitcheri (Pitcher's thistle) is a federally threatened plant endemic to the Great Lakes dunes. Unfortunately, a formerly-recommended biocontrol weevil (Larinus ...
... The species has an important presence in crops (Everitt et al., 2007). It’s occurs in- micro (asexually) by forming clones with different densities (Donald, 1994), and in-macro (sexually) by fruits with conquering new lands. The sexed propagation type is dioecious, with the presence of both female plants and those male. To express existent ecotype weed in the Southern Highlands area, they have mad ...
Cirsium arvense; control methods; cropping systems; herbicides; perennial weeds; roots; weed control
Abstract:
... Cirsium arvense (L.) Scop. is one of the most problematic perennial weeds in European countries, causing notable yield losses in both conventional and organic arable cropping systems. C. arvense control is essential because its infestation spreads rapidly and has negative impacts for several years due to its biological characteristics. Herbicidal treatments are the main control methods used in con ...
... The aim of the paper was to determine weed infestation expressed by weeds number and weed weight and other index under a three different tillage system: no-tillage (NT), reduced tillage (RT), and ploughing tillage (CT) in two legume species crops: pea and narrowed-leaved lupine. The research proved that growing legume under no-tillage conditions caused the increasing weed infestation. Weather cond ...
... Harrowing is mostly applied with a constant intensity across the whole field. Heterogeneous field conditions such as variable soil texture, different crop growth stages, variations of the weed infestation level, and weed species composition are usually not considered during the treatment. This study offers a new approach to sensor-based harrowing which addresses these field variations. Smart harro ...
... The work is devoted to the mycelium biochemical composition of Stagonospora cirsii C-211, Calophoma complanata 32.121, Didymella macrostoma 32.52. These phylogenetically distant species of phoma-like micromycetes are the potential mycoherbicides of Cirsium arvense, Heracleum sosnowskyi, and Convolvulus arvensis, respectively. The S. cirsii C-211, C. complanata 32.121, D. macrostoma 32.52 mycelium ...
... The Stagonospora cirsii mycelium is considered as the infectious basis of a potential mycoherbicide for the control of Canadian thistle and perennial sow thistle. Successful commercialization of mycoherbicides is often constrained by poor drying survival. In this study was shown that the highest viability of mycelium S. cirsii during drying is achieved in the stationary phase of growth. The myceli ...
Cirsium arvense; automation; crop yield; farmers; image analysis; models; remote sensing; soil temperature; spring; spring barley; unmanned aerial vehicles; weeds; Denmark; North America; Northern European region
Abstract:
... Eight experiments were carried out in Denmark to determine the yield loss of spring barley due to Cirsium arvense in farmers' fields and to suggest and evaluate a novel approach for quantifying C. arvense infestation in large plots. Literature about the competitive ability of C. arvense is old, scattered and inconclusive, and existing models for estimating crop yield loss are based on data from No ...
... Co-occurring invasive plants are an understudied yet common phenomenon, and likely to become even more frequent with climate change-driven range shifts. Invasive–invasive interactions can be competitive, neutral, or facilitative; symmetric or asymmetric; and their impact on natives can be additive or non-additive. Non-additive impacts, wherein co-occurring invasives either reduce or enhance one an ...
... Neonicotinoid uptake by maize plants emerged from coated seeds and by two common weeds grown in close proximity to coated seeds has been studied. Uptake of thiamethoxam (TMX) and clothianidin (CLO) have been characterized via guttation liquid measurements. The creeping thistle (Cirsium arvense), a well-known maize weed, as well as red poppy or Flanders poppy (Papaver rhoeas) were chosen as model s ...
... Lettuce (Lactuca sativa L.) is the most important leafy vegetable crop in Brazil, being affected by a number of fungal diseases. Severe powdery mildew (PM) symptoms (100% incidence) were observed in commercial lettuce cultivar ‘Caipira’ plantings in Formosa, Goiás State (2015) and ‘Milena’ in Planaltina, Federal District (2018) under hydroponic conditions in Central Brazil. Typical whitish fungal ...
... Recently, a new implement for controlling weeds in cereals (CombCut) has been developed. It cuts weeds in growing cereals without damaging them by using the physical differences (in height, stem thickness, straw stiffness and branching pattern) between crops and weeds. To evaluate and compare the effects of selective cutting with different timings of herbicide application on Cirsium arvense in spr ...
Cirsium arvense; Curculionidae; digital images; fauna; sexual dimorphism
Abstract:
... This is the first report of a very rare weevil Altonomus vernalis (Iablokoff-Khnzorian, 1957) 60 years after its description. It is a new record for the Turkish fauna and Cirsium arvense (L.) is a first plant association record. Comparative sexually dimorphic characters, measurements, and digital photographs are presented for the first time. ...
Cassida; Cirsium arvense; biological control; biological control agents; herbivores; larvae; pastures; population density; population growth; weeds; New Zealand
Abstract:
... The folivorous beetle, Cassida rubiginosa Müller (Coleoptera: Chrysomelidae), was released in New Zealand in 2007 as a biocontrol agent against the pasture weed, Cirsium arvense (L.) Scop. The impact of the beetle on shoot population density and spread was assessed over two years on isolated experimental plots within an established population of the weed. Four folivory treatments were imposed by a ...
... Most studies on the impacts of plant invasions focus on species richness or diversity of invaded communities, but much less attention has been paid to structural changes such as the representation of species with different traits. To bridge this knowledge gap, we assess the impact of dominant species on the trait composition of recipient communities (i.e., how species with certain height, seed mas ...
... A shortage of available livestock for utilizing grassland biomass in Central Europe is challenging for the management of both semi‐natural grasslands and previously intensified (limed, fertilized and reseeded) upland grasslands. An alternative method of grassland management is mulching, in which aboveground biomass is cut, crushed and subsequently spread on the surface. This paper reports on an ex ...
Alnus subcordata; Cirsium arvense; DNA-directed RNA polymerase; Eclipta prostrata; Populus deltoides; Septoria; actin; calmodulin; data collection; leaf spot; new species; operon; peptide elongation factors; phylogeny; Iran
Abstract:
... Species of Septoria are commonly associated with leaf spot diseases of a broad range of plant hosts worldwide. During our investigation of fungi associated with leaf spot diseases in northern and northwestern Iran, several Septoria isolates were recovered from symptomatic leaves on different herbaceous and woody plants in the Asteraceae, Betulaceae, and Salicaceae families. These isolates were stu ...
... Medicinal and edible homologous plant is receiving widespread attention due to its particularity. As an edible wild vegetable, Cirsium setosum (Willd.) MB is used to treat various bleeding diseases. This work aims to investigate the technological conditions for ultrasound assisted extraction of flavonoids in C. setosum (Willd.) MB. Using a Box–Behnken design as an experimental model, the optimum e ...
... The effect of the nitrogen source (sodium nitrate and soybean meal) on the growth, pathogenicity, and lipid composition of mycelium of Stagonospora cirsii Davis VIZR 1.41, a potential mycoherbicide against Canada thistle (Cirsium arvens (L.) Scop.), was studied. The fungus grew significantly (two times) faster on sucrose-soybean meal medium (SSM) than on modified Czapek medium (CM). The fungal myc ...
... Floral resources are known to be important in regulating wild pollinator populations and are therefore an important component of agri‐environment and restoration schemes which aim to support pollinators and their associated services. However, the phenology of floral resources is often overlooked in these schemes — a factor which may be limiting their success. Our study characterizes and quantifies ...
... Grassland restoration success depends on the development of plant communities that accord with restoration goals. Intraspecific variation in competitiveness may affect community development. For some grassland species, germplasm can be obtained from sources ranging from wild collections to selectively bred cultivars. The extent to which population source affects competitive outcomes in restoration ...
... Canada thistle (Cirsium arvense L.) growing in spring wheat (Triticum aestivum) is difficult to control for several reasons. First, it is a perennial weed that has an extensive root system. Second, the cash‐crop wheat prevents the use of many chemicals, and third, Canada thistle is becoming resistant to many single action herbicides. The objective of this study was to evaluate the effect of postem ...