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CLC number: S48

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Received: 2005-04-12

Revision Accepted: 2005-04-28

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Cited: 4

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Journal of Zhejiang University SCIENCE B 2005 Vol.6 No.8 P.756~758

http://doi.org/10.1631/jzus.2005.B0756


Dissipation of pencycuron in rice plant


Author(s):  PAL R., CHAKRABARTI K., CHAKRABORTY A., CHOWDHURY A.

Affiliation(s):  Department of Agricultural Chemistry and Soil Science, Calcutta University, Calcutta, Pin-700 019, India; more

Corresponding email(s):   p_raktim@rediffmail.com

Key Words:  Pencycuron, Dissipation, Rice plant, Sheath blight, Rhizoctonia solani


PAL R., CHAKRABARTI K., CHAKRABORTY A., CHOWDHURY A.. Dissipation of pencycuron in rice plant[J]. Journal of Zhejiang University Science B, 2005, 6(8): 756~758.

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Abstract: 
pencycuron is a non-systemic protective fungicide for controlling sheath blight of rice. However, information on the fate of pencycuron in rice plant is lacking. The degradation of pencycuron in waterlogged tropic rice field was investigated. pencycuron was applied at recommended field dose (187.5 g a.i./ha) and double recommended dose to cropped plots for three consecutive years. pencycuron was rapidly degraded in rice plant at all doses of pencycuron application with first order half-lives of 1.57~2.77 d. The study revealed that pencycuron is safe from the human and environmental contamination point of view.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

Reference

[1] Mithrasena, Y.J.P.K., Adhikari, W.P., Wickramasinghe, D.L., 1989. Studies on sheath blight of rice in the low country wet zone. Trop. Agricul., 145:75-86.

[2] Osada, S., 1993. Effect of several fungicides on the seasonal occurrence of rice sheath spot, caused by Rhizoctonia oryzae Ryker and Gooch. Ann. Rep. Soc. Pl. Prot. North Jn., 44:11-13.

[3] Sylvanie, D.R., Cornis, L., 1989. High performance liquid chronmatography for the determination of pencycuron residues in several vegetables. J. Agric. Food Chem., 37:975-978.

[4] Tomlin, C.D.S., 1997. Pencycuron. In: Tomlin, C.D.S. (Ed.), The Pesticide Manual. Eleventh Edition, British Crop Protection Council, UK, p.935-937.

[5] van Eeckhout, E., Rush, M.C., Blackwell, M., 1991. Effects of rate timing of fungicide applications on incidence and severity of sheath blight and grain yield of rice. Pl. Dis., 75(12):1254-1261.

[6] Wickramasinghe, D.L., Mithrasena, Y.J.P.K., 1989. Sheath blight disease of rice in the low country wet zone of Sri Lanka: Effect on yield and factors influencing spread and distribution. Tropic. Agric. Res. Series., 22:38-48.

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