ALFIANTI, VERONIKA LILI (2026) PENGARUH DOSIS PUPUK KALIUM DAN KONSENTRASI GIBERELIN TERHADAP PERTUMBUHAN DAN HASIL TANAMAN TOMAT. Masters thesis, Universitas Pembangunan Nasional (UPN) "Veteran" Jawa Timur.
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Abstract
Indonesian tomato productivity remains low at 19.54 tons/ha compared to the potential of 50-60 tons/ha, primarily due to insufficient potassium availability and suboptimal fruit quality. This study aimed to determine the optimal KCl dosage and gibberellin (GA₃) concentration for improving tomato growth and yield. A factorial experiment was conducted using a Completely Randomized Design with two factors: KCl dosage (2.5, 5.0, 7.5, and 10 g/plant) and GA₃ concentration (0, 50, and 100 ppm), replicated three times. Results showed that KCl 10 g/plant significantly improved plant height, fruit weight and volume, seed number, sugar content, and chlorophyll content. GA₃ 100 ppm increased sugar content by 13.81% but decreased seed number by 50.80%, indicating parthenocarpy induction. The combination of KCl 10 g/plant and GA₃ 50 ppm produced the longest shelf life (29.55 days). The antagonistic effect between potassium and gibberellin on seed formation suggests that concentration selection should be adjusted to production objectives. These findings provide practical guidance for sustainable tomato cultivation in lowland areas. Keywords: Fruit quality, Gibberellin, KCl dosage, Parthenocarpy, Shelf life
| Item Type: | Thesis (Masters) | ||||||||||||
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| Subjects: | S Agriculture > S Agriculture (General) | ||||||||||||
| Divisions: | Faculty of Agriculture > Magister Agritechnology | ||||||||||||
| Depositing User: | Veronika Lili Alfianti | ||||||||||||
| Date Deposited: | 20 Jul 2026 04:36 | ||||||||||||
| Last Modified: | 28 Jul 2026 02:34 | ||||||||||||
| URI: | https://repository.upnjatim.ac.id/id/eprint/56500 |
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