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DAWAH, A., ABD-ELMAGEED, S., FARAG, M. (2005). EFFECTS OF THIOBENCARB HERBICIDE ON SOME CHEMICAL PARAMETERS AND PLANKTON COMMUNITIES OF RICE FIELDS. Egyptian Journal of Agricultural Research, 83(4), 1783-1796. doi: 10.21608/ejar.2005.255207
AIDA M. A. DAWAH; SAFWAT A. ABD-ELMAGEED; MOHAMED FARAG. "EFFECTS OF THIOBENCARB HERBICIDE ON SOME CHEMICAL PARAMETERS AND PLANKTON COMMUNITIES OF RICE FIELDS". Egyptian Journal of Agricultural Research, 83, 4, 2005, 1783-1796. doi: 10.21608/ejar.2005.255207
DAWAH, A., ABD-ELMAGEED, S., FARAG, M. (2005). 'EFFECTS OF THIOBENCARB HERBICIDE ON SOME CHEMICAL PARAMETERS AND PLANKTON COMMUNITIES OF RICE FIELDS', Egyptian Journal of Agricultural Research, 83(4), pp. 1783-1796. doi: 10.21608/ejar.2005.255207
DAWAH, A., ABD-ELMAGEED, S., FARAG, M. EFFECTS OF THIOBENCARB HERBICIDE ON SOME CHEMICAL PARAMETERS AND PLANKTON COMMUNITIES OF RICE FIELDS. Egyptian Journal of Agricultural Research, 2005; 83(4): 1783-1796. doi: 10.21608/ejar.2005.255207

EFFECTS OF THIOBENCARB HERBICIDE ON SOME CHEMICAL PARAMETERS AND PLANKTON COMMUNITIES OF RICE FIELDS

Article 21, Volume 83, Issue 4, December 2005, Page 1783-1796  XML PDF (2.55 MB)
Document Type: Original Article
DOI: 10.21608/ejar.2005.255207
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Authors
AIDA M. A. DAWAH; SAFWAT A. ABD-ELMAGEED; MOHAMED FARAG
Central Laboratory for Fish Research, Agricultural Research Center, Dokki, Giza, Egypt
Abstract
The adverse effects of the rice herbicide thiobencarb (Saturn) on rice field chlorophyll "a" concentrations, =plankton communities and water quality were studied throughout the period investigation. Treatments simulated direct spraying of rice field by this herbicide was followed. Two rates of 1 and 1.5 kg faddan'l of thiobencarb were tested, representing approximate high and low level. Water quality measurements were done prior to herbicide application (0 time) and then after 1, 2, 3, 4 days from application. The obtained results indicated that Thiobencarb was reduced greatly oxygen production in water. These stressful oxygen levels, however, occurred only with the simulated direct spraying by this herbicide in rice field. Also, stimulation of chlorophyll -a- was recorded. Herbicide concentration froued influenced in this respect. In addition, significantly higher rotifers and copepods counts were observed after 4 days from herbicide treatment.
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