The Use of Barley Straw for Controlling of Cyanobacteria Under Field Application

Rajabi, H.; Filizadeh, Y; Soltani, Maryam; Fotokian, Mohammad Hossein

doi:10.3923/jfas.2010.394.401

Cited by 7 publications

(8 citation statements)

References 39 publications

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“…For example, while in an enclosure study barley straw (1.3 g L -1 ) was effective in suppressing Aphanizomenon flos-aquae, dissolved oxygen levels dropped to near zero (Haggard et al 2013). In contrast, others found higher oxygen levels in barley-treated ponds (Rajabi et al 2010) or no effects in an enclosure study (Boylan and Morris 2003). Moreover, the addition of barley straw to mesocosms increased phosphate levels fivefold to tenfold compared to the control (Haggard et al 2013), whereas in another study, no effects on nutrients were found (Boylan and Morris 2003).…”

Section: Plant/tree Extractsmentioning

confidence: 94%

“…and a stimulation of Oscillatoria sp. (Rajabi et al 2010), while another pond experiment showed no difference between controls and barley-treated ponds (Ferrier et al 2005). The phytoplankton abundance in a loch treated with barley bales declined after 10 months compared to an untreated loch and remained low for subsequent 17 months (Harriman et al 1997).…”

Section: Plant/tree Extractsmentioning

confidence: 99%

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Evaluation of several end-of-pipe measures proposed to control cyanobacteria

2015

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While reduction in nutrient loading is a prerequisite for mitigation of harmful cyanobacterial blooms in nutrient-enriched waters, in certain surface waters eutrophication control is not always feasible due to practical and economic constraints or might be effective only in the long run. Yet, the urgent need to control cyanobacteria in water for drinking, irrigation, aquaculture, industry and recreation has spurred the development of a plethora of alternative methods that claim to be fast acting. Here, we provide a critical overview of several of these end-of-pipe measures: effective microorganisms (EM Ò ), golden algae (Ochromonas), plant/tree extracts, ultrasound and artificial mixing of non-stratifying waters. Most of the end-of the pipe measures claim to provide sustainable control of harmful cyanobacterial blooms, while at best only targeting symptom relief rather than eutrophication relief. Support for ''effective'' microorganisms, golden algae, plant extracts, ultrasound and artificial mixing of non-stratifying waters to diminish eutrophication problems such that the resulting water quality meets societal and legislation demands is limited, and several proposed underlying mechanisms are doubtful. None of these curative measures seem the desired wide applicable solution to cyanobacterial nuisance; they should not be considered Columbus's egg. A critical evaluation of end-of pipe measures is crucial for water authorities in their choice for mitigating measures.

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Section: Plant/tree Extractsmentioning

confidence: 94%

Section: Plant/tree Extractsmentioning

confidence: 99%

Evaluation of several end-of-pipe measures proposed to control cyanobacteria

2015

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“…However, this richness disappeared quickly and only one species, Aphanizomenon sp dominated in summer. In the literature (Brownlee et al 2003;Rajabi et al 2010), this species should have been inhibited by barley straw decomposition that was not the case in this pond.…”

Section: Impact Of the Barley Straw Treatmentmentioning

confidence: 83%

“…In the beginning of June, the bloom of A. flos aquae cannot be stopped, or at least hampered, by the degradation of straw. The development of this species and that of Anabaena sp as well is however known to be inhibited by barley straw decomposition (Brownlee et al 2003;Rajabi et al 2010) and in July, they completely disappeared. However, in October, Anabaena sp reappeared and dominated the algal population.…”

Section: Impact Of the Barley Straw Treatmentmentioning

confidence: 99%

“…The interpretation of the data is however not so trivial: barley straw has indeed an algistatic effect on some species like Microcystis, Anabaena or Aphanizomenon sp. (Brownlee et al 2003;Rajabi et al 2010), while it may stimulate the development of some others, for instance, Anabaena cylindrica or Oscillatoria (Rajabi et al 2010). Additionally, several studies counteracted these findings, especially concerning Microcystis sp (Ferrier et al 2005;Ó hUallacháin, Fenton 2010).…”

Section: Impact Of the Barley Straw Treatmentmentioning

confidence: 99%

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Efficiency Evaluation of an Algistatic Treatment Based on Barley Straw in a Hypertrophic Pond

Prygiel

Charriau

Descamps

et al. 2014

Journal of Environmental Engineering and Landscape Management

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Eutrophication processes were closely examined in a hypertrophic pond that was subjected to a barley straw treatment to inhibit cyanobacteria blooms. A phytoplankton activity was present from February to November 2010 with Chlorophyll a concentrations that ranged between 8 and 83 μg L-1 . The good oxygenation of the pond provided by primary production all along the year seems to maintain an oxic layer at the top of the sedimentary column. A high-frequency monitoring of algal development pointed out the end of the diatom bloom at the end of April and the growth of green algae from beginning of May. One month later, the development of cyanobacteria supplanted other algae several times. The implementation of barley straw does not seem to hinder the growth of cyanobacteria in June, August and September and do not promote the development of other algae potentially favoured by such a treatment. As a consequence, a barley straw treatment does not seem to be really appropriate for this kind of ponds in Northern France and more tests should still be undertaken to prove its real efficiency.

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