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All Journal Journal of Tropical Soils Journal of Degraded and Mining Lands Management Agrotekma: Jurnal Agroteknologi dan Ilmu Pertanian AGROMIX Jurnal Agronomi Tanaman Tropika (JUATIKA) G-Tech : Jurnal Teknologi Terapan Nusantara Science and Technology Proceedings Jurnal Abdimas Bina Bangsa Batara Wisnu : Indonesian Journal of Community Services
Fitri Wijayanti
Universitas Pembangunan Veteran Jawa Timur
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Energy Engineering Environmental Science Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Social Sciences Other

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Biodiversity Study on Various Land Uses in Jatiarjo Village, Pasuruan Regency Muhammad Ramdhan Kalandoro Wardoyo; Bakti Wisnu Widjajani; Fitri Wijayanti
JURNAL AGRONOMI TANAMAN TROPIKA (JUATIKA) Vol. 8 No. 2 (2026): Jurnal Agronomi Tanaman Tropika (JUATIKA) Vol. 8 No. 2 Mei 2026
Publisher : LPPM UNIVERSITAS ISLAM KUANTAN SINGINGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36378/juatika.v8i2.5118

Abstract

Biological diversity is part of the ecological chain within the environment or ecosystem. The interrelationship among all living organisms, including microorganisms, flora, and fauna, cannot be overlooked. Biological diversity is often used as an indicator of ecosystem health. Biodiversity can be measured using the biological diversity index introduced by Shannon and Wiener, which serves as a reference for evaluating diversity levels. This research aims to examine existing biological diversity. The study uses the Shannon–Wiener method, which is commonly used to measure species diversity within communities across various land-use types, including Garden Mix 1, Garden Mix 2, fields, and gardens. Each land-use type possesses different vegetation diversity characteristics. Garden Mix 1 combines woody plants and horticultural crops, whereas Garden Mix 2 features a mix of horticultural plants and shrubs. The results of this research may serve as a recommendation and as a foundation for further sustainable studies, such as carbon stock research and biodiversity assessments.
The Effect of Interaction of Microbially Immobilized Biochar and Salinity Stress on Soil Chemical Properties (pH, EC, C-organic, and CEC) in Red Spinach (Amaranthus tricolor L.) Cultivation Nofia Wahyu Puspita; Rossyda Priyadarshini; Fitri Wijayanti
JURNAL AGRONOMI TANAMAN TROPIKA (JUATIKA) Vol. 8 No. 2 (2026): Jurnal Agronomi Tanaman Tropika (JUATIKA) Vol. 8 No. 2 Mei 2026
Publisher : LPPM UNIVERSITAS ISLAM KUANTAN SINGINGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36378/juatika.v8i2.5153

Abstract

Soil salinity reduces nutrient availability and inhibits plant growth. While red spinach (Amaranthus tricolor L.) exhibits tolerance to suboptimal conditions, its growth declines significantly under high salinity stress. This study evaluated the efficacy of microbially immobilized biochar in ameliorating the chemical properties of saline-stressed soil and enhancing red spinach growth. The experiment employed a Completely Randomized Design (CRD) with two factors: biochar dose (0, 15, 30, and 45 t ha⁻¹) and NaCl salinity levels (0, 4, 6, and 8 mS cm⁻¹), with three replications totaling 48 experimental units. Soil parameters measured included pH, electrical conductivity (EC), organic carbon (C), and cation exchange capacity (CEC) at 0 and 28 days after planting (DAP), while fresh plant weight was recorded at 28 DAP. Data were analyzed using ANOVA followed by a 5% Least Significant Difference (LSD) test. Results indicated that biochar application significantly influenced soil pH and CEC. The 30 t ha⁻¹ treatment yielded the highest pH (7.31) at 28 DAP, whereas the 45 t ha⁻¹ treatment achieved the maximum CEC (61.84 cmol kg⁻¹). NaCl stress significantly increased soil EC from 0.93 to 8.69 mS cm⁻¹ at the highest dose, while organic carbon remained unaffected by either treatment. Although the 15 t ha⁻¹ dose was optimal for pH improvement and the 45 t ha⁻¹ dose for CEC enhancement, the 45 t ha⁻¹ treatment overall proved most effective in improving the chemical properties of saline soil and supporting red spinach growth, maintaining stable pH, EC, CEC, and organic carbon values through 28 DAP.
Co-Authors Adi Jaya Bakti Wisnu Widjajani Chosa Zahro Fatiha Didik Suprayogo Dimas Prabowo Harliando Haidar Fari Aditya Lestari, Safira Riska Maroeto Maroeto Maya Dwi Setyoningrum Muhammad Fikri Yuhdistira Muhammad Ramdhan Kalandoro Wardoyo Nofia Wahyu Puspita Noni Rahmadhini Priyadarshini, Rossyda Puji Lestari Tarigan Purnomo Edi Sasongko Ramadhani Mahendra Kusuma Ramadhani, Winih Sekaringtyas Raudah Anggraini Tarigan Raudha Anggraini Tarigan Rossyda Priyardhasini Safira Rizka Lestari Syahrul Kurniawan Wiga Fikri Destianisma YUDI NUR SUPRIADI