An evaluation of cadusafos against Pratylenchus sp. and Paratylenchus sp. on chrysanthemums in Cameron Highlands

P. M. Yuen1, P. Y. Yau2, O. Ahmad Shokri3 and K. B. Quah4

Abstract

In a single season field trial on Chrysanthemum morifolium  (variety Reagan Yellow), Rugby (10% cadusafos) was tested at 5, 10 and 15 g/m2  and compared with Furadan (3% carbofuran) at 5 g/m2  as a standard. Nematodes infesting the crop were Pratylenchus sp. and Paratylenchus  sp. Carbofuran failed to controlthe nematodes at the tested rate. Cadusafos at all rates significantly reduced (but did not eliminate completely) nematode populations in roots and soil. The number of marketable flowers produced in treated plots was higher than those in the untreated controls although this was not significantly so. This is attributed to low nematode infestations in the plot which were unable to reach damaging levels.

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