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Nurmi
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Effect of Various Organic Fertilizer Treatments on Soil Bulk Density and Soil Color in Yardlong Bean (Vigna sinensis L.) B. Hamsa, Jamaludin; Nurmi; S. Bagu, Fitria; Zulzain Ilahude; Yunita Rahim
International Journal of Technology and Education Research Vol. 4 No. 01 (2026): January- March, International Journal of Technology and Education Research (IJ
Publisher : International journal of technology and education research

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63922/ijeter.v4i01.3022

Abstract

Yardlong bean (Vigna sinensis L.) is one of the secondary food crops with considerable potential as a food source; th erefore, improvements in cultivation practices are required to enhance its productivity. One effort to increase yardlong bean production is through the application of organic fertilizers, such as chicken manure and cattle manure. This study aimed (1) to evaluate the effects of chicken manure and cattle manure application on soil bulk density (BD) and soil color in yardlong bean cultivation, and (2) to determine the optimal dosage of these organic fertilizers for improving BD and soil color. The study was conducted from September to January 2026 in Tunggulo Village, Tilong Kabila Subdistrict, Bone Bolango Regency, Gorontalo Province, Indonesia. The experiment employed a Randomized Block Design (RBD) consisting of five treatments: P0 (control, without fertilizer), P1 (chicken manure at 10 t ha⁻¹), P2 (chicken manure at 20 t ha⁻¹), P3 (cattle manure at 10 t ha⁻¹), and P4 (cattle manure at 20 t ha⁻¹). Data were analyzed using analysis of variance (ANOVA) followed by the Honestly Significant Difference (HSD) test, and correlation analysis was conducted to examine the relationship between BD and the growth and yield of yardlong bean. The results indicated that the application of chicken manure and cattle manure had no significant effect on soil bulk density and soil color.
Soil chemical Fertility for maize in Tibawa, Gorontalo, Indonesia Ferawati Bano; Zulzain Ilahude; Nurmi; Rida Iswati; Laode Muhamad Irsan
International Journal of Technology and Education Research Vol. 4 No. 01 (2026): January- March, International Journal of Technology and Education Research (IJ
Publisher : International journal of technology and education research

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63922/ijeter.v4i01.3042

Abstract

This study evaluated the chemical status of soils under maize (Zea mays L.) cultivation in Tibawa Subdistrict, Gorontalo Regency, Indonesia, to identify fertility constraints and inform site-specific management. A field survey was conducted in May 2025 at three villages (Isimu Utara, Datahu, and Iloponu). At each site, ten subsamples from the 0–20 cm plough layer were composited and analysed for soil pH (H2O and KCl), organic carbon, total nitrogen (Kjeldahl), available phosphorus (Bray I), exchangeable potassium (NH4OAc), and cation exchange capacity (CEC). Results indicated slightly acidic to neutral soils (pH 6.3 - 6.9) with moderate CEC (16.72 - 22.32 cmol(+)/kg). Organic carbon ranged from low to moderate (1.42 - 2.51%). Available P was consistently moderate (12.04–14.72 ppm), whereas exchangeable K was low across all sites (0.19 - 0.24 cmol(+)/kg). Total N varied from low in Isimu Utara (0.13%) to moderate in Datahu and Iloponu (0.24 - 0.26%). The primary limitations for maize production were low K availability and, locally, low N and organic matter. Management should prioritize organic amendments, balanced NPK fertilization based on soil testing, and periodic liming where acidification trends emerge. These findings provide a baseline for future monitoring of soil quality and developing recommendations to sustain maize yields while reducing nutrient losses under intensive management in Tibawa.
Co-Authors Abdul Rahim Alfiah A Algazali Amriadil Arief Azis, Muhammad Arifin Arsyad, Silviana Astutika B. Hamsa, Jamaludin Bayu Irsandy Citra Lestari Dama, Olis Edi Mulyadi Esti Qama Fauzan Zakaria Ferawati Bano Hasan, Yusrin Hestiani K, Dewi Hilmi Hambali, Hilmi If'all, If'all Indriati Husain Insaniah, Nurul Qalbi Irfah irma yunita Irsan, Laode Muhamad Ismail Qadri Karim, Kasmawati Kasmawi Khusnul Khatima Asrul Konio, Mohamad Arif Mansur Miftahul Janna Muhammad Ali Muhammad Arief Azis Musyafira Mutia Sofiani nadar, muhammadnadar Nooraeni, Endah Normah Normah Nur isnaini syaifullah Nurdin . Nurul Hilmi Purbawati Naprilia, Tania Putri Indah Sari Rahman, Adriyanto Rida Iswati Ridwan Rival Rahman, Rival Romi Adiansyah S. Bagu, Fitria Salfa Seti Sarmila Satriani Siti Walida Mustamin Sri Wahyuni Sri Wahyuni Syahrul Syahrul Ramadana SyahrulRamadana Usman WAHYUNI Winarti. A Yunita Rahim Yunnita Rahim Zulzain Ilahude