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Presence/absence sequential plans for pest management decision-making, for arthropods of wet rice ecosystem in Malaysia

Presence-absence sequential sampling plans are presented for 11 arthropod categories to assist in management of their populations in the multipest-infested rice crop in Malaysia. Data from visual inspection of204 samples, with 40 and 100 hills per sample, were used to develop the plans. Action thr...

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Main Authors: Syed Hassan, Syed Tajuddin, M. M., Rashid
Format: Article
Language:English
Published: Universiti Putra Malaysia Press 1997
Online Access:http://psasir.upm.edu.my/id/eprint/3640/1/Presence_absence_Sequential_Plans_for_Pest_Management_Decision-making%2C.pdf
http://psasir.upm.edu.my/id/eprint/3640/
http://www.pertanika.upm.edu.my/Pertanika%20PAPERS/JTAS%20Vol.%2020%20(1)%20Apr.%201997/07%20JTAS%20Vol.20%20(1)%201997%20(Pg%2051-63).pdf
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spelling my.upm.eprints.36402015-09-07T02:39:53Z http://psasir.upm.edu.my/id/eprint/3640/ Presence/absence sequential plans for pest management decision-making, for arthropods of wet rice ecosystem in Malaysia Syed Hassan, Syed Tajuddin M. M., Rashid Presence-absence sequential sampling plans are presented for 11 arthropod categories to assist in management of their populations in the multipest-infested rice crop in Malaysia. Data from visual inspection of204 samples, with 40 and 100 hills per sample, were used to develop the plans. Action threshold for each of the 11 (5 pests, 6 predators) arthropod categories was obtained through a fourth-order polynomial regression of proportion of infestation against mean population densities, at the point of saturation of infestation. The pest species are: Nephotettix spp., Nilaparvata lugens, Recilia dorsalis, Sogatella furcifera and Cnapholocrocis medinalis (Pyralidae), and the predators: Cyrtorhinus lividipennis, Anatrichus pygmaeus (Diptera), spiders, Odonata, Paederus fuscipes and Casnoidea spp. Risk levels of Type I (a) and Type II error ({3) were prefixed at 0.3, since lower levels entail taking a larger number of samples. The sequential plans were then generated using the SEQUAN computer program of Talerico and Chapman (1970). During field operation on not more than 50 ha at a time, it is suggested that at least ten hills should be examined visually before recommending any pest management action. Simultaneous sampling of pests and predators enables status of predators' populations to be considered before recommending any decision. Universiti Putra Malaysia Press 1997 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/3640/1/Presence_absence_Sequential_Plans_for_Pest_Management_Decision-making%2C.pdf Syed Hassan, Syed Tajuddin and M. M., Rashid (1997) Presence/absence sequential plans for pest management decision-making, for arthropods of wet rice ecosystem in Malaysia. Pertanika Journal of Tropical Agricultural Science, 20 (1). pp. 51-63. ISSN 0126-6128 http://www.pertanika.upm.edu.my/Pertanika%20PAPERS/JTAS%20Vol.%2020%20(1)%20Apr.%201997/07%20JTAS%20Vol.20%20(1)%201997%20(Pg%2051-63).pdf
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
description Presence-absence sequential sampling plans are presented for 11 arthropod categories to assist in management of their populations in the multipest-infested rice crop in Malaysia. Data from visual inspection of204 samples, with 40 and 100 hills per sample, were used to develop the plans. Action threshold for each of the 11 (5 pests, 6 predators) arthropod categories was obtained through a fourth-order polynomial regression of proportion of infestation against mean population densities, at the point of saturation of infestation. The pest species are: Nephotettix spp., Nilaparvata lugens, Recilia dorsalis, Sogatella furcifera and Cnapholocrocis medinalis (Pyralidae), and the predators: Cyrtorhinus lividipennis, Anatrichus pygmaeus (Diptera), spiders, Odonata, Paederus fuscipes and Casnoidea spp. Risk levels of Type I (a) and Type II error ({3) were prefixed at 0.3, since lower levels entail taking a larger number of samples. The sequential plans were then generated using the SEQUAN computer program of Talerico and Chapman (1970). During field operation on not more than 50 ha at a time, it is suggested that at least ten hills should be examined visually before recommending any pest management action. Simultaneous sampling of pests and predators enables status of predators' populations to be considered before recommending any decision.
format Article
author Syed Hassan, Syed Tajuddin
M. M., Rashid
spellingShingle Syed Hassan, Syed Tajuddin
M. M., Rashid
Presence/absence sequential plans for pest management decision-making, for arthropods of wet rice ecosystem in Malaysia
author_facet Syed Hassan, Syed Tajuddin
M. M., Rashid
author_sort Syed Hassan, Syed Tajuddin
title Presence/absence sequential plans for pest management decision-making, for arthropods of wet rice ecosystem in Malaysia
title_short Presence/absence sequential plans for pest management decision-making, for arthropods of wet rice ecosystem in Malaysia
title_full Presence/absence sequential plans for pest management decision-making, for arthropods of wet rice ecosystem in Malaysia
title_fullStr Presence/absence sequential plans for pest management decision-making, for arthropods of wet rice ecosystem in Malaysia
title_full_unstemmed Presence/absence sequential plans for pest management decision-making, for arthropods of wet rice ecosystem in Malaysia
title_sort presence/absence sequential plans for pest management decision-making, for arthropods of wet rice ecosystem in malaysia
publisher Universiti Putra Malaysia Press
publishDate 1997
url http://psasir.upm.edu.my/id/eprint/3640/1/Presence_absence_Sequential_Plans_for_Pest_Management_Decision-making%2C.pdf
http://psasir.upm.edu.my/id/eprint/3640/
http://www.pertanika.upm.edu.my/Pertanika%20PAPERS/JTAS%20Vol.%2020%20(1)%20Apr.%201997/07%20JTAS%20Vol.20%20(1)%201997%20(Pg%2051-63).pdf
_version_ 1643822669287653376
score 13.211869

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