TOXIC EFFECTS OF DIFFERENT CONCENTRATIONS OF RICE HERBICIDE (OXADIARGYL) ON SCENEDESMUS ALGAE IN WATER BODIES

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MEHDINEJAD K.; MEHDINEJAD M.; SHARIATI FAYZABADI F.

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Journal: JOURNAL OF BIOLOGY SCIENCE Year:2011 | Volume:5 | Issue:2 (SERIES NO. 17) Page(s): 95-105

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Title

TOXIC EFFECTS OF DIFFERENT CONCENTRATIONS OF RICE HERBICIDE (OXADIARGYL) ON SCENEDESMUS ALGAE IN WATER BODIES

Author(s)

MEHDINEJAD K. | MEHDINEJAD M. | SHARIATI FAYZABADI F. | Issue Writer Certificate

Keywords

TOXICITYQ2

HERBICIDEQ2

TOP STARQ2

GREEN ALGAEQ2

SENEDESMUS SPQ2

Abstract

Oxadiargyl or TOP STAR is an HERBICIDE used in rice fields, which decreases chlorophyll content in aquatic vegetation and results in degeneration of cell membrane. The toxic effects of this HERBICIDE were studied in the green algal species Scenedesmus sp. using four different concentrations (10, 46.36, 214.76 and 1000 mg/l) of this HERBICIDE. A control group without HERBICIDE was also included. Three replicates were used for each treatment group. Experiments were carried out in 1.5 l bottles and 20 cc of Scenedesmus solution was added to each treatment group and aerated for 24, 48, 72 and 96 h. Results obtained indicate that from day 1, all four concentrations of the HERBICIDE, Oxadiargyl, adversely affected growth rates in Senedesmus, and cell counts in all four groups dropped by 31.8-69.7%. But decreasing trend in cell count after 96 h was 12.3-42.7% of that observed in the control group. Average mortality rate of Senedesmus. during 96h was recorded as 57.3-87.7%. In general, all treatments (Except for the treatment group with 10 mg/l HERBICIDE after 72h) showed negative effect on growth rates of Scenedesmus. More than 50% (54.3-64%) mortality of Senedesmus cell numbers occurred in 214.8 and 1000 mg/l HERBICIDE concentration treatments, only 24h. Therefore, application of these dosages in the Rice field has negative effect on GREEN ALGAE. Significant difference was detected between blank and 4 treatments ofSenedesmus sp. cells numbers, indicating the degradation of Senedesmus cells and the toxic effect of this HERBICIDE on primary producers in water bodies.

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APA: Copy

MEHDINEJAD, K., MEHDINEJAD, M., & SHARIATI FAYZABADI, F.. (2011). TOXIC EFFECTS OF DIFFERENT CONCENTRATIONS OF RICE HERBICIDE (OXADIARGYL) ON SCENEDESMUS ALGAE IN WATER BODIES. JOURNAL OF BIOLOGY SCIENCE, 5(2 (SERIES NO. 17)), 95-105. SID. https://sid.ir/paper/164175/en

Vancouver: Copy

MEHDINEJAD K., MEHDINEJAD M., SHARIATI FAYZABADI F.. TOXIC EFFECTS OF DIFFERENT CONCENTRATIONS OF RICE HERBICIDE (OXADIARGYL) ON SCENEDESMUS ALGAE IN WATER BODIES. JOURNAL OF BIOLOGY SCIENCE[Internet]. 2011;5(2 (SERIES NO. 17)):95-105. Available from: https://sid.ir/paper/164175/en

IEEE: Copy

K. MEHDINEJAD, M. MEHDINEJAD, and F. SHARIATI FAYZABADI, “TOXIC EFFECTS OF DIFFERENT CONCENTRATIONS OF RICE HERBICIDE (OXADIARGYL) ON SCENEDESMUS ALGAE IN WATER BODIES,” JOURNAL OF BIOLOGY SCIENCE, vol. 5, no. 2 (SERIES NO. 17), pp. 95–105, 2011, [Online]. Available: https://sid.ir/paper/164175/en

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