Kurniawati, Kurniawati (2025) EFIKASI BAKTERI ENDOFIT Bacillus Bth-22 SEBAGAI ENTOMOPATOGEN TERHADAP Spodoptera frugiperda (Lepidotera: Noctuidae) PADA TANAMAN JAGUNG (Zea mays L.). Masters thesis, UPN Veteran Jawa Timur.
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Abstract
The attack of armyworm Spodoptera frugiperda is a problem in corn plants (Zea mays L.). The use of endophytic bacteria Bacillus sp as an entomopathogen is expected to be able to control the attack of S. frugiperda. This study aims to determine the effective concentration of bacteria and active compounds produced by Bacillus Bth-22 in controlling S. frugiperda. The study was conducted from August to October 2024 at the Plant Health Laboratory, Faculty of Agriculture, UPN "Veteran" East Java and Airlangga Research Hub Surabaya. The study was arranged using a completely randomized design (CRD) with bacterial concentration treatments 10%, 15%, 20%, 25%, 30%, and 35% which were repeated 5 times. Observation parameters were the level of mortality, the number of pupae and imago formed, antifeedant and the mechanisms and compounds produced by Bacillus bacteria based on HPLC and FT-IR tests. The application of Bacillus Bth-22 affected the parameters of mortality, the number of pupae formed, the number of imago formed and antifeedant. Bacillus Bth-22 bacteria produce metabolite compounds in the form of organic hydrocarbon derivatives and amide group compounds in disrupting metabolism and digestion to cause the death of S. frugiperda. Keywords: Entomopathogen, Metabolite compounds. Spodoptera frugiperda, Zea mays
| Item Type: | Thesis (Masters) | ||||||||||||
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| Subjects: | S Agriculture > SB Plant culture > SB950-989 Pest Control and Treatment of Diseases, Plant Protection S Agriculture > SB Plant culture > SB599-990.5 Pests and Diseases |
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| Divisions: | Faculty of Agriculture > Magister Agritechnology | ||||||||||||
| Depositing User: | sp kurniawati wati | ||||||||||||
| Date Deposited: | 17 Mar 2025 07:46 | ||||||||||||
| Last Modified: | 17 Mar 2025 07:46 | ||||||||||||
| URI: | https://repository.upnjatim.ac.id/id/eprint/35831 |
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