Vol. 5, Issue 3 (2017)
Carryover effect and plant injury from oxyfluorfen herbicide applied in transplanted rice
Author(s): R Sathya Priya, C Chinnusamy, P Murali Arthanari and P Janaki
Abstract: A field investigation were carried out at the Agricultural Research Station, Bhavanisagar of Tamil Nadu Agricultural University, Coimbatore, India during rabi season of 2010 and 2011 to evaluate the new formulation of oxyfluorfen (23.5% EC) on weed control in transplanted rice and their residual effect on succeeding crops. Oxyfluorfen is a diphenyl-ether herbicide as a pre or post-emergence herbicide used for control of annual and perennial broad-leaved weeds in a variety of field crops. Many of the field experiments revealed that the bio-efficacy of oxyfluorfen herbicide; however, no information is available on the field persistence of oxyfluorfen, phytotoxicity symptoms in plant and carryover effect in succeeding crops under Indian tropical conditions. Therefore, the field experiments were undertaken to investigate the plant injury and persistence of oxyfluorfen in soil and rice crop in red sandy clay loam soil. Bioassay remains a major tool for qualitative and quantitative determination of herbicides residue in soil. Detection of the oxyfluorfen herbicide in soil can be done by bioassay which measures the biological response of a living plant to that particular herbicide. Based on two years field experimentation, the results clearly indicated, Pre-emergence (PE) application of oxyfluorfen (23.5% EC) at 250 g a.i. ha-1 can keep the weed density and dry weight below the economic threshold level and increased the rice grain yield. Plant injury symptoms of oxyfluorfen was complete recovery of affected rice plants could be observed only after 30 days after herbicide application (DAHA) and the phytotoxicity was not evident thereafter in rice crop. Carryover effect results showed that the oxyfluorfen herbicide to be safe on the succeeding crops and this might be due to detoxification of herbicides in soil and do not adversely affect the growth attributes of the succeeding crops in terms of germination percentage and dry matter production of the succeeding sunflower and blackgram.
Pages: 535-539 | 1354 Views 86 Downloads
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How to cite this article:
R Sathya Priya, C Chinnusamy, P Murali Arthanari, P Janaki. Carryover effect and plant injury from oxyfluorfen herbicide applied in transplanted rice. Int J Chem Stud 2017;5(3):535-539.
