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Agung Suharyanto
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Program Studi Agroteknologi, Fakultas Pertanian, Universitas Medan Area, Jalan Kolam No. 1, Pasar V, Medan Estate, Sumatera Utara
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Jurnal Ilmiah Pertanian ( JIPERTA)
Published by Universitas Medan Area
ISSN : -     EISSN : 27220338     DOI : 10.31289
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Jiperta is a Scientific Journal of Agriculture located at the Faculty of Agriculture, University of Medan Area. Journal of Agrotekma presents the results of research with quantitative and qualitative approaches that are sourced on the development of cultivation research of plants and the protection of organic crops that are environmentally friendly and sustainable. It is published twice a year, every March and September.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Agronomi dan Ilmu Tanaman
Articles 212 Documents
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Analisis Fungsi Keuntungan Usahatani Padi Sawah di Kecamatan Tanah Sepenggal Kabupaten Bungo Situmorang, Agustinus; Nainggolan, Saidin; Damayanti, Yusma
Jurnal Ilmiah Pertanian ( JIPERTA) Vol 8, No 1 (2026): Jurnal Ilmiah Pertanian (JIPERTA), Maret
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jiperta.v8i1.6896

Abstract

This study aims to analyze the profit function of rice farming in Tanah Sepenggal District, Bungo Regency. Specifically, this study (1) describes the characteristics of rice farming, (2) calculates the amount of profit earned by farmers, and (3) identifies the factors that influence the level of profit. The research employed a quantitative descriptive method approach using primary data collected from rice farmers through structured interviews in June- July 2025. Farm profit was calculated as the difference between total revenue and total cost, while the Cobb–Douglas profit function Unit Output Price (UOP) to examine the effect of seed cost, urea fertilizer cost, NPK fertilizer cost, pesticide cost, labor cost, and land rent. The results indicate that seed, pesticide, labor, and land rent costs significantly affect farm profit, whereas urea and NPK fertilizer costs do not. The coefficient of determination (R²) of 0.987 indicates that the model explains 98.7% of the variation in profit.
Effect of Bicomat and Tithonia Compost on Bok Choi (Brassica rapa L.) Productivity in Two Soil Types Wilujeng, Retno; Apriyanti, Kristin; Subianto, Edwin; Primadona, Primadona; Gunevo, Pilipus; Reku, Efraim Umbu; Jaspis, Yakobus; Cahya, Utik Tri Wulan; Widowati, Widowati
Jurnal Ilmiah Pertanian ( JIPERTA) Vol 8, No 1 (2026): Jurnal Ilmiah Pertanian (JIPERTA), Maret
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jiperta.v8i1.6190

Abstract

The potential of former C-excavation mining land differs significantly from agricultural soil in terms of productivity and nutrient availability. Ecosystem restoration and soil productivity enhancement in marginal lands are necessary to improve crop productivity. This study aims to evaluate the effectiveness of biochar-coated humate (Bicomat) and Tithonia compost fertilizer on the growth and yield of bok choi (Brassica rapa L.) in two different soil types. The research was conducted from October to December 2024 The study employed a Randomized Block Design (RBD) with a non-factorial approach, consisting of three replications and eight treatments Observation of growth parameters included plant height (4 Weeks after transplanting/WAP), root length (4 WAP), number of leaves (1-4 WAP), at the time of harvest wet weight and dry weight were observed. The data that has been obtained from the observation results then will be tested using the analysis of variance (ANOVA) further test of Tuckey HSD with 5% significance. Result showed the addition of Bicomat and Tithonia Compost showed differences in plant height 4 MST, number of leaves 4 MST, fresh -dry weight of bok choi plants. The S2T2B2 (Soil 2 + 300 g Tithonia Compost + Bicomat 20 t/ha) treatments more optimal in increasing plant height 4 MST, number of leaves 4 MST, dry weight of mustard plants on post C-excavation mining land. The S1T1B2 (Soil 1 + 200 g Tithonia Compost + Bicomat 20 t/ha) treatment was optimal in increasing plant height 4 MST, number of leaves 4 MST, dry weight of mustard plants on agricultural land.

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