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All Journal JTSL (Jurnal Tanah dan Sumberdaya Lahan) AbdiTechno (Jurnal Pengabdian Masyarakat)
Danny Dwi Saputra
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Agriculture, Biological Sciences & Forestry Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Mechanical Engineering

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AGROFORESTRY TO IMPROVE SOIL HEALTH: MICROBIAL BIOMASS NITROGEN (MBN) AS AN INDICATOR Pradani, Avi Qurvanda Putri; Nurfadilah; Sari, Rika Ratna; Danny Dwi Saputra; Hairiah, Kurniatun
Jurnal Tanah dan Sumberdaya Lahan Vol. 12 No. 2 (2025)
Publisher : Departemen Tanah, Fakultas Pertanian, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jtsl.2025.012.2.13

Abstract

Conversion of forests into agricultural land is one of the environmental problems currently being faced, leading to various environmental challenges including the decline in soil health. One effort to improve land management and slow down land degradation is to plant various types of trees and intercrops through an agroforestry system. Agroforestry is considered a viable strategy to gradually create a conducive microclimate for soil biota that can improve the physical, chemical and biological properties of the soil. The biomass of microorganisms as quantified – Microbial Biomass Nitrogen (MBN) and Microbial Biomass Carbon (MBC) – has been proposed as sensitive indicator of soil change. This research aimed to understand how MBN responds to agroforestation of Imperata grasslands in Solok Regency, West Sumatra (Indonesia). Fields of eight land use types (in three replications each) were sampled in the Juli-August 2024 period. Plot characteristics such as canopy cover were measured, to compare with MBN and MBC for soil at a depth of 0-10 cm. The results showed statistically significant differences in MBN and MBC in various land uses,  that match differences in canopy cover and age of agroforestry systems. A 1% increase in canopy cover could increase soil MBN levels with 0.94 mg kg-1 (R2 = 0.90). The C:N ratio for microbial biomass varied in the 2-6 range, with the lowest values for intensively cropped land, and the highest for existing or recently converted Imperata grasslands.
MANFAAT BAHAN ORGANIK DAN PERAN CACING TANAH DALAM MENJAGA KESUBURAN TANAH Sari, Rika; Meiravy Herista Cantika; Muhammad Yusuf Budi Prakoso; Dwi Wahyu Putri; Agil Nurul Hidayah; Muhammad Tsalsa Afriansyah; Nazwa Azizah Zahra; Danny Dwi Saputra
Abdi Techno Jurnal AbdiTechno, Vol. 5, Nomor 2, Juli 2025
Publisher : Departemen Teknologi Pertanian Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70124/abditechno.vi.1876

Abstract

Soil fertility decline has become a major challenge in the agricultural sector in East Java, particularly in sugarcane monoculture land of Tiru Kidul Village, Kediri. The low organic matter content, resulting from unsustainable land management, has led to decreased crop productivity, as indicated by hardened and barren soils. A team of faculty members and students from the Faculty of Agriculture at Brawijaya University conducted a Community Service Program to disseminate the importance of utilizing organic matter/crop residues to maintain soil fertility to farmers. Through a participatory and innovative approach using a planarcage demonstration tool, farmers were encouraged to observe directly the role of litter (plant residues) and earthworms in preserving soil fertility. Farmers observed that earthworm activity in planarcage with added organic matter (OM) was more active than without OM inputs. They also directly witnessed how earthworms increase soil porosity. Based on evaluation results, farmers' understanding of the role of litter and the positive benefits of earthworms improved. Negative perceptions of earthworms, which were thought to harm crops by consuming roots and soil, were clarified. With the increased awareness among farmers regarding the importance of returning organic matter (crop residues) to agricultural land, this initiative can promote more sustainable, environmentally friendly farming practices while maintaining long-term soil productivity.
Co-Authors Agil Nurul Hidayah Dwi Wahyu Putri Kurniatun Hairiah Meiravy Herista Cantika Muhammad Tsalsa Afriansyah Muhammad Yusuf Budi Prakoso Nazwa Azizah Zahra Nurfadilah Pradani, Avi Qurvanda Putri Sari, Rika Sari, Rika Ratna