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Relevant bibliographies by topics / Couch-grass

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Academic literature on the topic 'Couch-grass'

Author: Grafiati

Published: 4 June 2021

Last updated: 15 February 2022

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Journal articles on the topic "Couch-grass"

1

Brej, Teresa. "Population biology of Agropyron repens (L.) P. Beauv. around the copper smelter Legnica." Acta Societatis Botanicorum Poloniae 69, no. 4 (2014): 299–309. http://dx.doi.org/10.5586/asbp.2000.040.

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The present paper constitutes a background for the properties of couch grass tolerance for heavy metals previously recorded by the author. The tolerance for lead, zinc, copper and cadmium were described in couch grass on sites in the vicinity of the copper smelter Legnica. Most of the now presented results come from four-year field investigations, concerning four couch grass populations growing at different distances from the emitter. The over 50 year activity of the smelter affected specifically the traits and properties of the couch grass populations and their dynamics. This is expressed in the differentiated production of below and above ground biomass of couch grass and birth of aerial shoots. Further, recorded was also a different dynamics of origin and growth of rhizomes, and a retarded phenological development in populations localised nearest the smelter. The diverse population dynamics is expressed in different parameters, presented in the life tables. A change in growth strategy of couch grass, from querilla into phalanx, in result of ionic stress, was recorded in populations situated in the vicinity of the smelter.

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2

Ayres, J. R., J. Awad, H. Burger, J. Marzouk, and J. van Leeuwen. "Investigation of the potential of buffalo and couch grasses to grow on AFIs and for removal of nutrients from paper mill wastewater." Water Science and Technology 79, no. 4 (February 15, 2019): 779–88. http://dx.doi.org/10.2166/wst.2019.098.

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Abstract The potential growth of buffalo grass (Stenotaphrum secundatum) and couch grass (Cynodon dactylon) on artificial floating islands (AFIs) and their ability to remove total nitrogen (TN) and total phosphorus (TP) from a simulated paper mill wastewater was studied. This was done to assess the potential of AFIs for removal of nutrients from aerated stabilization basins (ASBs) that had occasional growth of blue-green algae (BGA) to bloom levels. Small scale AFIs were prepared using polyethylene foam and planted with the grasses in 30 L of tested water. Trials were conducted in a plastic covered greenhouse over a three-month period where temperatures ranged from 15 to 44 °C. The results showed that both buffalo and couch grasses can adapt to planting in AFIs showing increases of 125% and 148% in wet weight, respectively. Nutrient uptake by buffalo grass and couch grass were found to be similar. Percentage uptakes of TP and TN from the synthetic water by the buffalo grass were 82% and 47%, whereas by couch grass, uptakes were 83% and 45%, respectively.

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3

Brej, Teresa. "Ecological significance of assimilate distribution in Agropyron repens clones under influence of the copper smelter Legnica." Acta Societatis Botanicorum Poloniae 70, no. 2 (2014): 145–51. http://dx.doi.org/10.5586/asbp.2001.019.

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The studies on couch grass (<em>Agropyron repens</em> (L.) P. Beauv.) populations growing in stress conditions in close vicinity of a copper smelter concern the integrity of clonal structure. The connections of tillers within a clone and the interclonal integrity was investigated by means of assimilate translocation, using <sup>14</sup>C. It was found that heavy metal stress affects the phenotypic plasticity of couch grass in regard to clonal growth of the phalanx type. The phalanx type growth is supported by a considerable integration, which allows the redistribution of resources, through internal routes, from places rich in resources to such clone parts, which cover a surface poor in nutritive compounds. In an unpolluted (control) couch grass population representing the guerilla type of growth, the translocation of assimilates concerns only the closest (sister) ramets. The phalanx type of growth in couch grass subjected to contamination favours also the accumulation of organic matter and macronutrients (N, Ca) in zones of occurrence of <em>Agropyron repens</em> clusters, which are in deficit in areas close to the smelter. The irregular accumulation of heavy metals and the deficit of macronutrients in soil, form near the smelter a patchy environment. In this patchy environment couch grass, as one of few plants, finds appropriate conditions for foraging. The whole of factors in the studied polluted area creates a unique dynamic system between couch grass clones and the local ecological conditions.

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4

Van Toor, R. F., S. F. Chng, R. M. Warren, and R. C. Butler. "Influence of glyphosate herbicide treatment of couch grass on take-all caused by Gaeumannomyces graminis var. tritici with the addition of soil-borne microorganisms." New Zealand Plant Protection 70 (July 24, 2017): 186–95. http://dx.doi.org/10.30843/nzpp.2017.70.48.

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Couch grass rhizomes harbour Gaeumannomyces graminis var. tritici (Ggt), which causes take-all of wheat. Glyphosate used after cereal harvest to control couch can increase take- all in subsequent wheat crops. Following glyphosate treatment, the colonisation of senescing couch rhizomes by Ggt when treated with the endophytic fungus Microdochium bolleyi, and the spread of Ggt from senescing couch rhizomes to wheat when treated with the rhizobacterium Pseudomonas fluorescens, were investigated in two separate experiments. In Experiment 1, glyphosate increased Ggt inoculum in couch, irrespective of whether M. bolleyi was added to the potting medium. In Experiment 2, take-all severity and Ggt DNA concentration in roots of the accompanying wheat plants tended to decrease with glyphosate treatment of couch and increase only when P. fluorescens was added. Soil-borne microflora in fields containing glyphosate-sprayed couch may affect expression of take-all in subsequent wheat.

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5

SOON, Y. K., and A. L. DARWENT. "Effect of integrated management of couch grass (Elytrigia repens) on soil quality and crop nutrition." Journal of Agricultural Science 130, no. 3 (May 1998): 323–28. http://dx.doi.org/10.1017/s0021859697005157.

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The effects of suppressing couch grass (Elytrigia repens L.), through integrated management, on soil biological quality and N and P nutrition of barley (Hordeum vulgare L.) were evaluated in a field experiment (1987–92) on a Dark Grey soil in Alberta, Canada. The management practices consisted of combinations of herbicide application, crop rotations and tillage treatments. The 3-year crop sequences consisted of continuous barley, canola (Brassica rapa L.)–barley–barley, fallow–barley–barley, and barley or canola undersown with red clover (Trifolium pratense L.)–red clover green manure–barley. In 1992, the sixth year of the experiment, soil and plant samples were analysed for nutrient content. Treatments that consisted of spring and autumn tillage only did not suppress couch grass and produced low barley yields and N and P uptake. More N was immobilized in couch grass shoots and rhizomes and soil microbial biomass with these treatments than with similar herbicide-treated crop rotations. Tillage-plus-herbicide treatments effectively suppressed couch grass and enabled the barley crop to compete for soil N, however, both spring and autumn tillage were required for weed control. The fallow treatment impaired soil quality by reducing soil and microbial C and N, but produced similar barley yields as continuous cropping with tillage-plus-chemical control. Red clover ploughed in for green manure enhanced soil quality indicators such as soil and microbial biomass C, total and mineralizable soil N, and microbial N, but did not increase barley yield compared to continuous grain cropping.

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6

Brej, Teresa. "Heavy metal tolerance in Agropyron repens (L.) P. Bauv. populations from the Legnica copper smelter area, Lower Silesia." Acta Societatis Botanicorum Poloniae 67, no. 3-4 (2014): 325–33. http://dx.doi.org/10.5586/asbp.1998.041.

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The copper smelter "Legnica" is one of the oldest plants in Lower Silesia. Among the few weed species spontaneously migrating to the area around the emitter there is couch grass (<em>Agropyron repens</em> (L.) P. Bauv.). The purpose of this study was to analyse whether the local couch grass populations, growing at various distances from the smelter, differ in tolerance to heavy metals occurring in this area. The populations were tested for tolerance to five metals (Cu, Zn, Pb, Cd, Ni) using the root elongation method. The highest tolerance to Pb developed in two populations localized nearest the smelter. Similarly, all populations of couch grass from the vicinity of the smelter show a high tolerance to copper, particularly the plants from the most contaminated site. The IT for the latter population is almost 1509r, even at the highest dose of Cu. For Zn a nearing IT as for Cu was obtained. Comparing the shape of IT curves for Cd, special emphasis is put on the fact that a fixed tolerance to cadmium occurs only in the population localized closest to the emitter. The analysis of Ni-tolerance curves, of which the content in local soil is minimal, does not confirm the thesis on possibility of development of co-tolerance in the surveyed populations. It appeared that stress conditions existing near the smelter do not inhibit seed production in couch grass, but prevent a successful course of their germination on polluted soil. The improvement of soil even by 50% (addition of unpolluted soil) does not improve the poor process of germination in couch grass growing nearest to the smelter. Of importance is the fact that the highest number of seeds germinated on their own, polluted soil. The need of metals' content for plant germination in populations most distant from the smelter is evidenced by an almost 30% reduction of germination ability of local seeds after addition of unpolluted soil. Another significant observation was the fact that, in spite of a poor germination of seeds on unpolluted soil, the further development of seedlings in populations more distant from the smelter was more intense and faster than on their native polluted soil. Thus, a certain amount of metals may stimulate the germination processes of seeds in tolerant populations, but on the other hand, it may be a hindrance to subsequent juvenile phases. During observations of development of rhizomes, taken from three polluted couch grass populations cultivated on unpolluted soil, in all of them a very slow development of rhizome buds was recorded. However, the slowest rate of appearance of buds was found in the population taken nearest the emitter which, in greenhouse conditions and at lack of metals in soil, showed a markedly poor tendency toward vegetative reproduction. All the contaminated populations display a high activity of peroxidase in leaves and roots, frequently more than twice as high than in control populations. The activity of catalase is also markedly higher, but only in two of the most contaminated populations. The recorded for the first time populations of couch grass tolerant to metals make them useful for recultivation purposes.

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7

Štýbnarová, Marie, Pavlína Mičová, Hana Karabcová, and Marie Svozilová. "Occurrence of couch grass [Elytrigia repens (L.) Desv. ex Nevski] under different grassland management." Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis 61, no. 5 (2013): 1399–404. http://dx.doi.org/10.11118/actaun201361051399.

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The objective of this research was to investigate occurrence of common couch grass (Elytrigia repens(L.) Desv. ex Nevski) under different grassland management by means of a small-plot trial. The trial was managed during 2003–2011 with four levels of utilisation: intensive (4 cuts per year, 1stcut on 15 May), medium intensive (3 cuts per year, 1stcut on 30 May), low intensive (2 cuts per year, 1stcut on 15 June), and extensive (2 cuts per year, 1stcut on 30 June). Four rates of fertilisation were applied for each utilisation treatment: nil-fertilisation, P30K60, N90P30K60, and N180P30K60(pure nutrients). The intensively utilised treatments without N fertilisation showed the lowest mean percentage cover of couch (3.0 %, and 2.8 %, respectively). Further, we found a significant increase in couch grass cover (up to about 30 %) as a response to nitrogen fertilisation and it was most significant in grasslands utilised with two cuts per year. It can be concluded that grassland utilisation in three cuts per year and the dose 90 kg.ha−1of nitrogen led to the maintenance of the occurrence of couch at the reasonable level up to 10–15 %.

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8

Barrett-Lennard, E. G., Sarita Jane Bennett, and M. Altman. "Survival and growth of perennial halophytes on saltland in a Mediterranean environment is affected by depth to watertable in summer as well as subsoil salinity." Crop and Pasture Science 64, no. 2 (2013): 123. http://dx.doi.org/10.1071/cp12416.

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Farmers need methods for assessing the capability of saltland for productive use based on characteristics that are readily measurable at the paddock scale. We conducted experiments on saltland transects with gradients of salinity and depth to watertable at three sites in south-western Australia. Each was planted with five perennial species with at least some salt tolerance: samphire (Tecticornia mellaria K.A.Sheph.), river saltbush (Atriplex amnicola Paul G.Wilson), small leaf bluebush (Maireana brevifolia (R.Br.) Paul G.Wilson), saltwater couch (Paspalum vaginatum Sw.), and Rhodes grass (Chloris gayana Kunth). Survival and growth of species was related to depth to watertable in summer and average subsoil (0.25–0.50 m depth) electrical conductivity of the saturation extract (ECe). It has been hypothesised that plant zonation on land affected by dryland salinity is affected by the level of salinity and waterlogging on sites. While plant survival ≥60% could be associated with particular ranges of depth to watertable and soil salinity, our data suggest that the most important factor affecting survival and growth was the presence of shallow groundwater in summer. The range of depths to watertable in summer associated with ‘good survival’ (≥60%) was 0.7–1.0 m with samphire, 0.7–1.6 m with saltwater couch, 0.8–1.5 m with Rhodes grass, 0.7–2.4 m with river saltbush, and 0.9–2.4 m with small leaf bluebush. The subsoil ECe (95% confidence interval) associated with ‘good survival’ was 5–14 dS/m for Rhodes grass, 6–11 dS/m for small leaf bluebush, 7–11 dS/m for river saltbush, 6–16 dS/m for saltwater couch, and 27–65 dS/m for samphire. Growth of the perennial grasses was strongly affected by the presence of a shallow watertable in summer; the size of saltwater couch and Rhodes grass increased many-fold as watertable depths decreased from ~1.3 to 0.9 m from the soil surface.

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9

Chunkao, K., O. Phewnil, T. Pattamapitoon, N. Semvimol, and W. Wararam. "Grass filtration in parallel with VFCW technology for community wastewater treatment through the king's initiative nature-by-nature process." Water Practice and Technology 10, no. 4 (December 1, 2015): 633–43. http://dx.doi.org/10.2166/wpt.2015.071.

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The 15-year research is aimed to apply the Vertical Flow Constructed Wetland (VFCW) technology along with growing Star, Kallar, Coast couch grasses for community wastewater treatment as obtained from Phetchaburi municipal after anaerobic digesting inside the 18.5 km High-density Polyethylene (HDPE) pipe. The results found that pH value did not evidently show any change of influent to effluent among grass species but drastic change due to treatment efficiency in Biological Oxygen Demand (BOD), Total Kjeldahl Nitrogen (TKD), Total Phosphorus (TP), and Total Potassium (TK) due to supporting rapidly growing of Star, Kallar, and Coast couch grasses, and also some parts of organic forms to escape from the VFCW technical units as volatile gaseous chemicals; and precipitating down to the VFCW technical unit beds as sludge. The Star and Coast couch grasses showed higher potential in community wastewater treatment efficiency than Kallar grass but treating power were not different in wide ranges. Besides, the heavy metals (Pb, Cd, Hg as example) were contaminated in both treated wastewater and sludge (sediment). However, the influent and effluent as inflow and outflow of VFCW technical units found very low contamination but three grasses (Star, Kallar, and Coast couch) showed their eligibility in treating heavy metals, especially when their age at 45-day growth as the same findings of treating BOD, TKN, TP, and TK according to meet highest treatment efficiency at age of 45 days. In other words, the harvesting age at 45 days was not only reached the maximum treatment efficiency as well as maximum grass biomass but also kept away from heavy contamination.

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10

Semple, W. S., I. A. Cole, and T. B. Koen. "Native couch grasses for revegetating severely salinised sites on the inland slopes of NSW." Rangeland Journal 26, no. 1 (2004): 88. http://dx.doi.org/10.1071/rj04006.

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Two scalded saline sites on the inland slopes of NSW were selected for an evaluation of ten accessions of warm-season stoloniferous/rhizomatous grass species: common couch (Cynodon dactylon), marine couch (Sporobolus virginicus), rats-tail couch (S. mitchellii), salt-water couch (Paspalum vaginatum), water couch (P. distichum) and one exotic, kikuyu (Pennisetum clandestinum). Most species performed well at Wagga Wagga but only common couch, marine couch and salt-water couch did at Manildra, where they consistently outperformed the other native species in terms of survival, groundcover and vigour. Salt-water couch had the highest mean vegetative cover at both sites. Differences in salinity, pH (acid cf. alkaline) and particularly topsoil moisture probably accounted for differing plant performances at the two sites. In a follow-up production study of the most successful accessions under relatively dry conditions at Manildra, the 'Yamba' accession of marine couch consistently produced more leaf/seedhead dry matter (1057 � 172 kg/ha) during the growing season than the others. However, salt-water couch consistently produced more ex-plot stolon/rhizome dry matter (974 � 127 kg/ha) than the other two species. This probably explained its ability, unlike marine couch, to maintain groundcover during a regime of regular cutting. Further evaluation under grazing and recreational uses is recommended. The genetic material evaluated was only a small sample of salt-tolerant native grasses. The variable performance of the four accessions of rats-tail couch, for example, suggested that more salt-tolerant types are likely to be found.

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Dissertations / Theses on the topic "Couch-grass"

1

Li, Tai-Jung, and 李岱融. "The researches of couch grass culture in ancient books and records." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/62338396875939174444.

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ŠMÍDA, Petr. "Mechanická a chemická regulace vytrvalých plevelů." Master's thesis, 2008. http://www.nusl.cz/ntk/nusl-48962.

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Perennial weed creeping thistle and couch-grass were controlled for tree year period in Prepychy village (Rychnov nad Kneznou district). Stubble breaking had cardinal effect on regeneration of hypogenous vegetative organs both wedd and endorsed their appearance. Following ploughing and ground reproduction before seeding didn´t control these weed. In chemical control section was tested an effectiveness of 22 herbicides. Creeping thistle showed the highest sensitivity against the majority of herbicides in growth phase F4 (stalk height 20 cm). Results of experiments showed an importance of application a.i. glyphosate in perennial weed control system. In winter wheat vegetation showed herbicides Husar and Lontrel 300 the highest effect against creeping thistle. Broad-leaved crops give a possibility to use graminicides against couch-grass. Graminicides Fusilade Forte 150 EC and Gallant Super shown the highest effect against couch-grass.

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CHODL, Tomáš. "Biologie, výskyt a regulace plevelů v porostech okopanin." Master's thesis, 2013. http://www.nusl.cz/ntk/nusl-154325.

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The aim of the present diploma thesis is to widen knowledge of the chemical regulation of weeds in row crops. To establish the effectiveness of herbicides, we set up a small lot at a carefully chosen spot in the potato-growing region near Strakonice. We conducted a comparison of the effects of three herbicide combinations on two potato varieties (Red Anna, Laura). Two combinations proved pre-emergent (Afalon 45 SC+Command 36 SC; Sencor 70 WG+Command 36 SC), one post-emergent (Titus 25 WG). Subsequently, we evaluated economic costs on weeds regulation and suggested preliminary measures to be taken.

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Books on the topic "Couch-grass"

1

Station, National Vegetable Research. Couch grass (Agropyron repens (L.) Beauv.). [Warwick: NVRS, 1990.

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2

Parker, Philip M. The World Market for Vegetable Materials Used Primarily in Brooms and Brushes Including Broomcorn, Piassava, Couch Grass, and Istle: A 2007 Global Trade Perspective. ICON Group International, Inc., 2006.

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The World Market for Vegetable Materials Used Primarily in Brooms and Brushes Including Broomcorn, Piassava, Couch Grass, and Istle: A 2004 Global Trade Perspective. Icon Group International, Inc., 2005.

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Book chapters on the topic "Couch-grass"

1

Sastry, K. Subramanya, Bikash Mandal, John Hammond, S. W. Scott, and R. W. Briddon. "Agropyron repens (Couch grass)." In Encyclopedia of Plant Viruses and Viroids, 47–48. New Delhi: Springer India, 2019. http://dx.doi.org/10.1007/978-81-322-3912-3_22.

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2

Bolt, Barbara. "Couch Grass: Ethics of the Rhizome." In A Feminist Companion to the Posthumanities, 67–80. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-62140-1_6.

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3

Wasshausen, W. "Effect of cattle dung on the spread of couch grass (Elymus repens L.) in intensive grassland." In Animal Manure on Grassland and Fodder Crops. Fertilizer or Waste?, 345–46. Dordrecht: Springer Netherlands, 1987. http://dx.doi.org/10.1007/978-94-009-3659-1_34.

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"Sand Couch Grass." In Loe Bar and the Sandhill Rustic Moth, 75–88. BRILL, 2015. http://dx.doi.org/10.1163/9789004270305_005.

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