Luckyta, Silvia Reza (2021) EFIKASI METABOLIT SEKUNDER KOMBINASI Streptomyces sp. DAN Trichoderma sp. TERHADAP MORTALITAS Spodoptera frugiperda PADA TANAMAN JAGUNG (Zea mays L.). Undergraduate thesis, U.
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Abstract
Corn (Zea mays L.) is the main food commodity after rice which has a strategic role for agricultural and economic development. Obstacles in maize cultivation that cause low maize productivity include attacks from armyworms (Spodoptera frugiperda). The purpose of this study was to determine the application time of the secondary metabolite combination Streptomyces sp. and Thrichoderma sp. which is effective against armyworm larvae (Spodoptera frugiperda) in corn plants.. The research was conducted in April - July 2020 at the Plant Health Laboratory of the Faculty of Agriculture, East Java "Veteran" National Development University and in Jatirejo Village, Diwek District, Jombang with an altitude of 35 meters above sea level and an average temperature of 27oC to 32oC. This study used a factorial completely randomized design (CRD) with four replications. The results showed that the symptoms of armyworms due to the secondary metabolite solution were the change in the body of the larvae changing color from brownish green to dark brown after which it became blackish brown and had a distinctive aroma like soil. The high mortality value is found in the 10% concentration treatment with a mortality of 100% which is applied after the investment of Spodoptera frugiperda larvae in maize plants. The test results showed that the secondary metabolite treatment was the combination of Streptomyces sp. and Trichoderma sp. no significant effect on the percentage of crop damage due to armyworm attack (Spodoptera frugiperda). The lowest attack intensity value was found in the secondary metabolite treatment with the combination of Streptomyces sp. and Trichoderma sp. concentration of 15% was applied repressively or after investment of Spodoptera frugiperda larvae in maize plants with an average of 43%. Keywords : Secondary metabolite, Streptomyces sp., Thrichoderma sp., Spodoptera frugiperda, Corn (Zea mays L.)
| Item Type: | Thesis (Undergraduate) | ||||||||||||
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| Subjects: | S Agriculture > S Agriculture (General) | ||||||||||||
| Divisions: | Faculty of Agriculture > Departement of Agritechnology | ||||||||||||
| Depositing User: | Mujari Mujari | ||||||||||||
| Date Deposited: | 16 Nov 2021 03:33 | ||||||||||||
| Last Modified: | 16 Nov 2021 03:33 | ||||||||||||
| URI: | http://repository.upnjatim.ac.id/id/eprint/3234 |
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