Diversity of pest and non-pest insects in an organic paddy field cultivated under the System of Rice Intensification (SRI)

A case study in Lubok China, Melaka, Malaysia

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Insect diversity studies were conducted in paddy plots planted organically under SRI in Lubok China, Melaka. Eight sampling visits were made starting from the planting of seedlings until flowering stage, milky stage and ripening of the grains. Five sampling methods were used, i.e. light trap, sweeping net, sticky trap, yellow pan trap and pitfall trap. A total of 34 species representing 21 families and 8 orders of insects was recorded comprising Homoptera, Hymenoptera, Coleoptera, Orthoptera, Odonata, Hemiptera, Lepidoptera and Diptera. For the total sampling period, the Shannon-Wiener diversity index (H’) is 1.17, Shannon-Weiner evenness index (E’) is 0.89 and Margalef richness index (R’) is 4.77, respectively. However, no significant differences between the sampling visit (p > 0.05). The most abundant insects order were Orthoptera (22.9%; 231 individuals) the lowest was Diptera (2.3%; 23 individuals). The most abundant species was order Lepidoptera (13.8%) and the lowest was from Hemiptera (5.9%). In terms of feeding habits, herbivorous insects were the most abundant (65%), followed by carnivores (27%) and omnivores (8%). Results indicated that SRI has ensured a good balance between the populations of pests, beneficial insects (predators and parasitoids) as well as other insect’s community during the various phases of paddy development without any appreciable loss in yield. These show that SRI is an effective way to conserve, use and enhance biodiversity crucial to sustainable food security.

Original languageEnglish
Pages (from-to)2861-2865
Number of pages5
JournalJournal of Food, Agriculture and Environment
Volume11
Issue number3-4
Publication statusPublished - 2013

Fingerprint

Malaysia
paddy field
paddies
Insects
China
rice
pests
insect
case studies
Hemiptera
insects
Orthoptera
Lepidoptera
sampling
beneficial insects
insect communities
Diptera
sticky traps
light traps
omnivores

Keywords

  • Diversity
  • Insect pests
  • Paddy
  • System of rice intensification (SRI)

ASJC Scopus subject areas

  • Food Science
  • Agricultural and Biological Sciences (miscellaneous)
  • Environmental Science(all)

Cite this

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title = "Diversity of pest and non-pest insects in an organic paddy field cultivated under the System of Rice Intensification (SRI): A case study in Lubok China, Melaka, Malaysia",
abstract = "Insect diversity studies were conducted in paddy plots planted organically under SRI in Lubok China, Melaka. Eight sampling visits were made starting from the planting of seedlings until flowering stage, milky stage and ripening of the grains. Five sampling methods were used, i.e. light trap, sweeping net, sticky trap, yellow pan trap and pitfall trap. A total of 34 species representing 21 families and 8 orders of insects was recorded comprising Homoptera, Hymenoptera, Coleoptera, Orthoptera, Odonata, Hemiptera, Lepidoptera and Diptera. For the total sampling period, the Shannon-Wiener diversity index (H’) is 1.17, Shannon-Weiner evenness index (E’) is 0.89 and Margalef richness index (R’) is 4.77, respectively. However, no significant differences between the sampling visit (p > 0.05). The most abundant insects order were Orthoptera (22.9{\%}; 231 individuals) the lowest was Diptera (2.3{\%}; 23 individuals). The most abundant species was order Lepidoptera (13.8{\%}) and the lowest was from Hemiptera (5.9{\%}). In terms of feeding habits, herbivorous insects were the most abundant (65{\%}), followed by carnivores (27{\%}) and omnivores (8{\%}). Results indicated that SRI has ensured a good balance between the populations of pests, beneficial insects (predators and parasitoids) as well as other insect’s community during the various phases of paddy development without any appreciable loss in yield. These show that SRI is an effective way to conserve, use and enhance biodiversity crucial to sustainable food security.",
keywords = "Diversity, Insect pests, Paddy, System of rice intensification (SRI)",
author = "Norela Sulaiman and Anizan Isahak and Ismail Sahid and A. Maimon",
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AU - Isahak, Anizan

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AU - Maimon, A.

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N2 - Insect diversity studies were conducted in paddy plots planted organically under SRI in Lubok China, Melaka. Eight sampling visits were made starting from the planting of seedlings until flowering stage, milky stage and ripening of the grains. Five sampling methods were used, i.e. light trap, sweeping net, sticky trap, yellow pan trap and pitfall trap. A total of 34 species representing 21 families and 8 orders of insects was recorded comprising Homoptera, Hymenoptera, Coleoptera, Orthoptera, Odonata, Hemiptera, Lepidoptera and Diptera. For the total sampling period, the Shannon-Wiener diversity index (H’) is 1.17, Shannon-Weiner evenness index (E’) is 0.89 and Margalef richness index (R’) is 4.77, respectively. However, no significant differences between the sampling visit (p > 0.05). The most abundant insects order were Orthoptera (22.9%; 231 individuals) the lowest was Diptera (2.3%; 23 individuals). The most abundant species was order Lepidoptera (13.8%) and the lowest was from Hemiptera (5.9%). In terms of feeding habits, herbivorous insects were the most abundant (65%), followed by carnivores (27%) and omnivores (8%). Results indicated that SRI has ensured a good balance between the populations of pests, beneficial insects (predators and parasitoids) as well as other insect’s community during the various phases of paddy development without any appreciable loss in yield. These show that SRI is an effective way to conserve, use and enhance biodiversity crucial to sustainable food security.

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