Putri, Elsa Adelia (2025) Aplikasi Insektisida Nabati Ekstrak Biji Mimba (Azadirachta indica) Terhadap Hama Ulat Grayak (Spodoptera frugiperda) Pada Tanaman Jagung. Undergraduate thesis, Politeknik Negeri Jember.
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Abstract
The fall armyworm (Spodoptera frugiperda) is a major pest of maize capable of causing damage and risking yield losses. Excessive pesticide use negatively impacts the environment, creating a need for alternatives such as botanical insecticides derived from neem seeds (Azadirachta indica). This study aimed to determine the effectiveness of various concentrations of neem seed extract on S. frugiperda larval mortality, feeding inhibition, infestation intensity, and maize cob weight. A completely randomized design was employed with five concentration levels (0%, 10%, 15%, 20%, and 25%) and four replicates, utilizing the leaf-dip method. Probit analysis indicated that the effective concentrations (LC50 and LC95) of the neem seed extract were 23.53% and 41.68%, respectively. The application of different extract concentrations influenced feeding inhibition in S. frugiperda larvae; higher concentrations resulted in lower feed consumption. However, a field trial applying the effective concentration of neem seed extract to maize plants showed no significant effect on reducing the intensity of S. frugiperda larval infestation.
| Item Type: | Thesis (Undergraduate) | ||||||
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| Uncontrolled Keywords: | Biji mimba, mortalitasdan spofoptera frugiperda | ||||||
| Subjects: | 100 - Rumpun Matematika dan Ilmu Pengetahuan Alam (MIPA) > 110 - Ilmu IPA > 112 - Kimia 100 - Rumpun Matematika dan Ilmu Pengetahuan Alam (MIPA) > 110 - Ilmu IPA > 113 - Biologi 140 - Rumpun Ilmu Tanaman > 150 - Ilmu Pertanian dan Perkebunan > 153 - Ilmu Hama dan Penyakit Tanaman 140 - Rumpun Ilmu Tanaman > 160 - Teknologi dalam Ilmu Tanaman > 169 - Ilmu Pangan |
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| Divisions: | Jurusan Produksi Pertanian > Prodi D4 Teknik Produksi Tanaman Pangan > Tugas Akhir | ||||||
| Depositing User: | Elsa Adelia Putri | ||||||
| Date Deposited: | 15 Jul 2026 06:42 | ||||||
| Last Modified: | 15 Jul 2026 06:44 | ||||||
| URI: | https://sipora.polije.ac.id/id/eprint/58009 |
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