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All Journal Journal of Tropical Plant Protection Jurnal Pengabdian Informatika (JUPITA)
Permana, I Gede Teguh
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Agriculture, Biological Sciences & Forestry Humanities Computer Science & IT Other

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FORECASTING HARGA TANAH DI KJPP SUMERTADANA DAN REKAN Permana, I Gede Teguh; Ida Bagus Gede Dwidasmara; I Dewa Made Bayu Atmaja Darmawan
Jurnal Pengabdian Informatika Vol. 2 No. 4 (2024): JUPITA Volume 2 Nomor 4, Agustus 2024
Publisher : Jurusan Informatika, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Udayana

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Abstract

KJPP Sumertadana dan Rekan melibatkan evaluasi mendalam terhadap faktor-faktor yang mempengaruhi pasar tanah. Dalam konteks perusahaan ini, beberapa aspek yang dapat menjadi fokus analisis adalah lokasi proyek-proyek tanah yang mereka kelola, perkembangan infrastruktur di sekitarnya, kebijakan pemerintah terkait penggunaan tanah, dan kondisi ekonomi regional. Melalui pendekatan yang sistematis dan menggabungkan faktor-faktor yang relevan, perusahaan dapat menghasilkan perkiraan harga tanah yang lebih akurat untuk membantu pengambilan keputusan investasi dan strategi pengembangan property, maka dari itu diperlukan sebuah aplikasi yang dapat melakukan sebuah forecasting. Aplikasi forecasting harga tanah di perusahaan KJPP sumertadana dan rekan diharapkan dapat meningkatkan efisiensi perusahaan dalam memetakan harga tanah berdasarkan karakteristik tanah pada suatu daerah dan dapat mengatasi pertumbuhan harga tanah yang bersifat dinamis. Peforma aplikasi forecasting dalam prediksi harga tanah dengan menggunakan algoritma extream gradient boosting (Xgboost) terhadap metode evaluasi R2-score sebesar 70%.
The Effectiveness of Methanol and Hexane Extracts of Clove Leaves on The Growth of The Fungus Sclerotium rolfsii which Causes Damping-off Disease in Soybean Plants (Glycine max L. Merr) Parwanayoni, Ni Made Susun; Suryanti, Ida Ayu Putu; Permana, I Gede Teguh
Journal of Tropical Plant Protection Vol. 7 No. 2 (2026)
Publisher : University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jtpp.2026.007.2.5

Abstract

Differences in the polarity of solvents used in extraction significantly affect the inhibitory power and types of compounds identified. The aim of this study was to determine the inhibitory effectiveness of clove leaf extract extracted with different solvents, namely methanol (polar) and hexane (non-polar), on the growth of Sclerotium rolfsii fungus. The research methods included: extraction of clove leaf extract with methanol and hexane solvents, and testing the inhibitory power of crude methanol and hexane extracts using the well diffusion method. The effectiveness of clove leaf extract on the growth of S.rolfsii fungal colonies was tested using the colony method and biomass test. The results showed that the inhibitory power of crude clove leaf extract, tested separately with methanol and hexane solvents, each with an inhibition zone diameter of 40 mm (very strong inhibition) and  0 mm (no inhibition). The results extract tests on the growth of S.rolfsii fungal colonies showed that a 2 % methanol extract concentration was able to inhibit 100 % of S.rolfsii fungal colony growth.The results of the activity test of clove leaf methanol extract on the growth of fungal biomass S.rolfsii showed 100 % inhibition at a concentration of  1.5 %. The clove leaf methanol extract showed very strong inhibition, while the hexane extract showed no inhibition against S.rolfsii fungal growth.
Co-Authors I Dewa Made Bayu Atmaja Darmawan Ida Ayu Putu Suryanti Ida Bagus Gede Dwidasmara Parwanayoni, Ni Made Susun