Journal of Zhejiang University SCIENCE
(ISSN 1009-3095, Monthly)

2005   Vol. 6B   No. 8   p.756-758

Dissipation of pencycuron in rice plant

PAL R.^1,†, CHAKRABARTI K.¹, CHAKRABORTY A.², CHOWDHURY A.¹

(¹Department of Agricultural Chemistry and Soil Science, Calcutta University, Calcutta, Pin-700 019, India)
(²Department of Agronomy, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur, West Bengal, Pin-741 252, India)
^†E-mail: p_raktim@rediffmail.com
Received Apr. 12, 2005; revision accepted Apr. 28, 2005

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.

Key words: Pencycuron, Dissipation, Rice plant, Sheath blight, Rhizoctonia solani
doi:10.1631/jzus.2005.B0756             CLC number: S48