Kumari et al.
Atȱthreeȱlevelsȱofȱmetribuzinȱapplicationȱi.e.ȱ0.25,ȱ0.50ȱ
residuesȱinȱpotatoȱandȱsoilȱbyȱGC-ECD.ȱ Chromatographia
andȱ1.00ȱkg.ȱha -1 ,ȱnoȱpeaksȱinȱchromatogramsȱwereȱ
72 :ȱ701-706.ȱdoi:ȱ10.1365/s10337-010-1717-4
observedȱcorrespondingȱtoȱRtȱvalueȱofȱmetribuzinȱi.e.ȱ JohnsonȱABȱ2001.ȱAdsorptionȱandȱdegradationȱofȱmetolachlorȱ
andȱmetribuzinȱinȱaȱnoȱtillȱsystemȱunderȱthreeȱwinterȱcropȱ
5.9ȱminuteȱclearlyȱindicatedȱthatȱresiduesȱofȱappliedȱ
covers.ȱ Soil Sedimentation and Contamination 10 :525-537.ȱ
herbicideȱwereȱbelowȱdetectableȱlevelȱinȱpotatoȱcrop.ȱ
doi:ȱ10.1080/20015891109419
Theȱ aboveȱ findingsȱ areȱ inȱ conformityȱ withȱ resultsȱ
KhouryȱR,ȱCosteȱCM,ȱKawaȱNSȱ2006.ȱDegradationȱofȱmetribuzinȱ
givenȱbyȱ(ȱJiyuȱ et al. 2010,ȱAl-mughrabiȱ et al. 1999).
inȱ twoȱ soilȱ typesȱ ofȱ Lebanon.ȱ Journal of Environmental
Sciences and Health 41 :ȱ795-806.doi:1080/03601230600805790
Conclusion
KhouryȱR,ȱGeahchanȱA,ȱCosteȱCM,ȱCooperȱJFȱBobeȱAȱ2003.ȱ
Retentionȱandȱdegradationȱofȱmetribuzinȱinȱsandyȱloamȱ
Onȱtheȱbasisȱofȱaboveȱfindings,ȱitȱcanȱbeȱconcludedȱ
soilȱ andȱ clayȱ soilsȱ ofȱ Lebanon.ȱ Weed Research Oxford 43
thatȱmetribuzinȱappliedȱ@ȱ0.25ȱkg.ȱha -1 ,ȱ0.5ȱkg.ȱha -1
252-259.doi:10.1046/j.1365-3180.2003.00341.x
andȱ1.00ȱkg.ȱha -1 ȱcanȱbeȱsafelyȱappliedȱtoȱtheȱpotatoȱ Kumarȱ S,ȱ Angirasȱ NN,ȱ Ranaȱ SS,ȱ Sharmaȱ 2007.ȱ newȱ
cropȱ asȱ pre-emergenceȱ asȱ theȱ residues wereȱ notȱ
formulationȱ ofȱ metribuzinȱ forȱ weedȱ controlȱ inȱ potato.ȱ
detectedȱatȱtheseȱapplicationȱratesȱbothȱinȱsoilȱandȱ
Himachal Journal of Agricultural Research 33 :ȱ147-150.
potatoȱtubers.ȱHowever,ȱmetribuzin atȱaboveȱdosesȱ KumarȱS,ȱAngirasȱNN,ȱRanaȱSSȱandȱSharmaȱNȱ2008.ȱBioefficacyȱ
persistedȱinȱsoilȱupȱtoȱ60,ȱ75ȱandȱ120ȱdaysȱrespectively.
ofȱherbicidesȱtoȱcontrolȱweedsȱinȱpotato.ȱ Himachal Journal of
Agricultural Research 34 :ȱ22-24.
Acknowledgements
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Authorsȱ greatlyȱ acknowledgeȱ Head,ȱ Departmentȱ
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