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Abstract                 Volume:9  Issue-10  Year-2021          Original Research Articles


Online ISSN : 2347 - 3215
Issues : 12 per year
Publisher : Excellent Publishers
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Diversity of Pests and Natural Enemies in Rice Plant (Oryza sativa L.)
I Made Sudarma*, Ni NengahDarmiati and dan Ni Wayan Suniti
Department of Agroecotechnology Study Program, Faculty of Agriculture, Udayana University Jl. PB. Sudirman Denpasar-Bali, Indonesia
*Corresponding author
Abstract:

Pests and natural enemies of rice plants are monitored at all times in the field, with the hope that their population does not exceed the economic threshold. So if natural enemies are equal to or higher than pests, it can be ascertained that pesticide control is no longer needed. There were six insect pests found during the research in Penatih Dangin Puri Village, namely: Walangsangit (Leptocorisa acuta, Hemiptera: Alilydae), House fly (Musa domestica, Diptera: Muscidae), Butterfly (Troides helena, Lepidoptera: Papilionidae), Caterpillars (Scirpophaga innotata, Lepidoptera: Crambridae), Black Ladybugs (Coptosoma sp., Homiptera: Plataspididae) and Yellow Ladybugs (Charidotella sexpucata, Homptera: Plataspididae). Natural enemies found during the study were: Grasshoppers (Locusta migratoria Orthoptera: Acricidae), Spiders (Oxyopes salticus, Hymenoptera: Araneidae), Bees (Apiscerana, Hymenoptera: Apidae), Wasps (Amata huebneri, Homynoptera: Vespidae), Dragonflies (Choristhemis flavoterminata, Ordonata: Anisoptera), and Lizards (Eutropis multifasciata, Squamata: Scincidae).The highest prevalence of pests was found in walangsangit (Leptocorisa oratorius)as many as 94 individuals, while the highest prevalence in natural enemies was spiders as many as 71 individuals. The pest diversity index was 4.0165 with a dominance index of 0.6923. Meanwhile, the natural enemy diversity index was obtained: 3.6781 with a diversity index of 0.7340. Correlation and regression relationship between insect pests and natural enemies with temperature and humidity, as follows: only butterflies with temperature, black ladybugs with humidity were very significantly related. While the relationship between natural enemies with temperature and humidity is only grasshoppers with a significant correlation with temperature, while grasshoppers with humidity have a very significant relationship.

Keywords: Pests, natural enemies, population dynamics, prevalence, diversity and dominance.
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How to cite this article:

I Made Sudarma, Ni Nengah Darmiati and dan Ni Wayan Suniti. 2021. Diversity of Pests and Natural Enemies in Rice Plant (Oryza sativa L.).Int.J.Curr.Res.Aca.Rev. 9(10): 13-22
doi: https://doi.org/10.20546/ijcrar.2021.910.003