Hirschmanniella spp. in Rice Fields of Vietnam

Authors

  • Nguyen B. Khuong

Abstract

Root and soil samples from one-crop and two-crop rice fields were collected in a survey for Hirschmanniella spp. in Vietnam during 1978-80. Hirschmanniella spp. were found in 50-78% of the soil samples and 98-100% of the root samples collected. Population densities of nematodes in root systems were lowest at posttransplanting and highest at heading time. Numbers of nematodes inside roots increased 20-22 times from transplanting to heading in fields with both crop sequences. Population densities of Hirschmanniella spp. in two-crop rice fields were more than twice those in one-crop rice fields. Key words: Hirschmanniella spp., Oryza sativa, rice root nematode, survey, Vietnam.

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Published

1987-01-15

Issue

Vol. 19, No. 1 (January 1987)

Section

Articles

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