Metabolism of carbaryl and carbofuran in soil planted to rice

Brahmaprakash, G. P. ; Sethunathan, N. (1985) Metabolism of carbaryl and carbofuran in soil planted to rice Agriculture, Ecosystems &Environment, 13 (1). pp. 33-42. ISSN 0167-8809

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Official URL: http://www.sciencedirect.com/science/article/pii/0...

Related URL: http://dx.doi.org/10.1016/0167-8809(85)90099-4

Abstract

In greenhouse experiments carbaryl and carbofuran disappeared more rapidly from a soil planted to rice than from an unplanted soil under both flooded and non-flooded (60% water-holding capacity) conditions. The rate of degradation was little affected by the moisture regime. The degradation of both carbamate insecticides proceeded essentially by hydrolysis. Further degradation of the hydrolysis products, 1-naphthol from carbaryl and 2,3-dihydro-2,2-dimethylbenzofuran-7-ol from carbofuran was slow in both planted and unplanted systems. A significant portion (20-38%) of the ring 14C in carbaryl and carbofuran accumulated in the soil as the respective hydrolysis products + soil-bound residues. Evolution of 14CO2 from the 14C (from both side chain and ring labels) in carbaryl and carbofuran was negligible even in soil planted to rice.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
ID Code:47782
Deposited On:12 Jul 2011 14:14
Last Modified:12 Jul 2011 14:14

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