Journal of Ginseng Research

The Korean Society of Ginseng (고려인삼학회)
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Impacts of Different Pentachloronitrobenzene (quintozene) Use Patterns on Severity of Damping-off of Ginseng (Panu quinquefolitrs)

  • Reeleder, R.D (Southern Crop Protection and Food Research Centre, Agriculture and Agri-Food Canada, 1391 Sandford St, London, ON, Canada N5V 4T3) ;
  • Capell, B (Southern Crop Protection and Food Research Centre, Agriculture and Agri-Food Canada, 1391 Sandford St, London, ON, Canada N5V 4T3)
  • Published : 2002.03.01
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Abstract

In replicated field trials, the efficacy of pentachloronitrobenzene (PCNB; quintozene) for control of damping-off of ginseng seedlings was found to be affected by timing of application and formulation. Application at the time of seeding and prior to placement of straw mulch was found to provide the moat consistent level of disease control. However, decline in plant stand during the four-year production cycle resulted in most treatments providing similar levels of plant populations at harvest. Soil residues of pentachloronitrobenzene were generally highest (1 $\mu\textrm{g}$ PCNB/g soil) in those treatments that exhibited the highest levels of disease control in the seedling year. Straw contained high levels of quintozene after application. Beet seed assays with artificially-infested soils indicated that current use rates provide an amount of product suitable for high levels of disease control.

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References

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