An inquiry into the diversity of insect on rice cropping (Oryza sativa L.) at vegetative stadia applied by liquid organic pestisides derrived from plants and bio-slurry Biogas

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Research Paper 01/03/2018
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An inquiry into the diversity of insect on rice cropping (Oryza sativa L.) at vegetative stadia applied by liquid organic pestisides derrived from plants and bio-slurry Biogas

Muhammad Nurdin, Akhmad Gazali, Bambang Joko Priatmadi, Lilis Hartati
J. Bio. Env. Sci.12( 3), 210-219, March 2018.
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This research is aimed at 1) comparing predator and pest composition on rice cropping treated by organic pesticides and bio-slurry biogas, 2) analyzing insect biodiversity on rice cropping treated by liquid organic pesticides derived from plants, 3) recognising the effects of plant-derived pesticides and bio-slurry biogas combination on insects biodiversity. This experiment was carried out in Warnasari Village Tamban Catur District Kapuas Regency. The results showed that 1) predator and pest composition of rice cropping treated by organic pesticides and bio-slurry biogas on P5 had the biggest comparison at 92%: 6% whilst P1 had the least comparison at 87%: 10%. 2) Index of Species Richness (R) was ranged from 1.61 (P2) to 2.01 (P6) (R ≤ 3.5 considered low); Dominance Index (C) was ranged from 0.5330 (P6) to 0.6814 (P7) (0.5 < C ≤ 0.75 considered medium); Diversity Index (H’) was ranged from 1.13 (P7) to 2.33 (P6) which means that the diversity is categorised as medium with adequate productivity, balance ecosystem condition, moderate ecosystem pressure. The Evenness Index showed high evenness with stable community ranged between 0.7 – 0.8. However, P7 had a low index accounted for 0.3 which represent low evenness and pressed community. 3) Application of organic pesticides and bio-slurry had no significant effects on diversity, species richness, dominance, and evenness indexes.


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