Development, mortality rate and adult longevity of rice grain bug, Paraeucosmetus policornis (Dallas), on rice and string beans Vigna sesquipedalis (L.) under controlled conditions

Issue Date

10-2016

Abstract

Paraeucosmetus pollicornis (Dallas), locally known as Rice grain bug (RGB) is considered a new pest of rice in the Philippines. Originally, RGB is a pest attacking string beans which is commonly planted along the bunds of rice field. This study was conducted to be able to establish the effect of string beans and rice plant on the duration of each developmental stage and adult longevity of P. Pallicornis Dallas under controlled condition. The duration of egg incubation and adult longevity of of RGB both on rice and string beans in laboratory and screenhouse were not significantly different. Although there were nymphal instar durations that were found to be significantly different, this did not effect the total development period of RGB on rice and string beans under laboratory conditions. In the screenhouse, the total developmental period of RGB were significantly different on rice and string beans wherein RGB reached adult stage on the average of 30.75 days on rice plants. Considering that the reproductive to ripening phase of rice is about 65 days, the duration of this phase could accommodate a second generation of RGB nymphs and adults. Percent mortality of RGB on rice and string beans was 23.33% under laboratory conditions while n screenhouse , 76.66% was recorded in rice and string beans was 23.33% under laboratory condition while in screenhouse, 76.66% was recorded in the rice and 55% on string beans.

Source or Periodical Title

The Philippine Entomologist

ISSN

0048-3753

Volume

30

Issue

2

Page

188-189

Document Type

Article

Frequency

semi-annually

Language

English

En – AGROVOC descriptors

HETEROPTERA; VIGNA UNGUICULATA SESQUIPEDALIS; KIDNEY BEANS; ORYZA SATIVA; RICE; PESTS OF PLANTS; LONGEVITY; MORTALITY; SPECIES; ADULTS; DEVELOPMENTAL STAGES

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