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All Journal Journal of Tropical Soils JTSL (Jurnal Tanah dan Sumberdaya Lahan) Jurnal Agroekoteknologi Unri Conference Series: Community Engagement
Gian Juliano
Universitas Riau
Agriculture, Biological Sciences & Forestry Humanities Environmental Science

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PENENTUAN WAKTU TANAM PADI GOGO BERDASARKAN NERACA AIR LAHAN DI KABUPATEN ROKAN HULU Gian Juliano; Besri Nasrul
Jurnal Agroekoteknologi Vol 12, No 2 (2020)
Publisher : Jurusan Agroekoteknologi Fakultas Pertanian Untirta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33512/jur.agroekotetek.v12i2.12696

Abstract

Especially in Rokan Hulu Regency, the low productivity of upland rice is caused by the improper planting time. Land dryness often occurs as a result of incorrectly predicting climate which in turn hurts crop yields. This research was conducted to determine the level of groundwater availability based on the analysis of the land water balance and to determine the planting time of upland rice in the Rokan Hulu Regency. The method used in this research is a survey method. The primary data consisted of the water content of field capacity, permanent wilting point, and bulk density. Location of the soil sampling consisted of seven Homogeneous Land Units (SLH) resulted from overlay of soil type map, administrative map, dryland agricultural map using the Geographic Information System technique. Secondary data (climate period 1990-2019) were obtained from Balai Wilayah Sungai Sumatera III. Land water balance analysis was performed using the Thornthwaite-Matter methods. The data obtained were analyzed using descriptive statistics to explain the period of surplus and deficit in groundwater, as well as for determining the planting time for upland rice based on soil water content and plant water needs per growing period at each SLH. The results of the research showed that the Rokan Hulu regency was classified as a wet area with an annual rainfall of 2,751.1 mm (Oldemann C1). Soil water content is classified as very sufficient criteria every month, both topsoil and bottom layer in the range of January-May and September-December. However, in the range of June-August, the soil water content varied at each SLH. Upland rice planting (Inpago Varieties) can be done in January, May, and September in SLH 1, SLH 2, SLH 3, SLH 4, SLH 5, and SLH 6, while in SLH 7 upland rice planting is carried out in January and September. Planting using local varieties can be done in February and September in SLH 1, SLH 2, SLH 3, SLH 4, SLH 5, and SLH 6, while in SLH 7 planting can be done in March and September. Alternating planting can also be done by planting inpago varieties in February and local varieties in September.
Edukasi pembuatan hand sanitizer berbahan alami kepada masyarakat di nagari persiapan aia manggih utara, Kecamatan Lubuk Sikaping Hengki Firmanda; Gian Juliano
Unri Conference Series: Community Engagement Vol 2 (2020): Seminar Nasional Pemberdayaan Masyarakat
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/unricsce.2.84-89

Abstract

This community empowerment activity in making hand sanitizers was carried out in the Nagari Persiapan Aia Manggih Utara, Kecamatan Lubuk Sikaping. WHO officially declared COVID-19 a pandemic due to the increasingly massive spread of COVID-19 in various countries. One of the efforts to avoid this virus is to maintain hand hygiene. Currently, many hand sanitizers are offered in the form of hand sanitizers because their use is more practical. Hand sanitizer is practical to use and can be carried anytime and anywhere. Generally, hand sanitzers are made using alcohol-based ingredients, but the use of alcohol on the skin is considered unsafe, besides that during the Covid-19 pandemic, hand sanitizers have become rare in the market. Therefore, one way to overcome this problem is to make a hand sanitizer made from natural ingredients from betel and lime leaves. The formulation of the problems that arise due to COVID-19 in the Nagari Persiapan Aia Manggih Utara, namely how to educate the public in making hand sanitizers made from natural ingredients, Techniques used in community empowerment related to the manufacture of hand sanitizers with natural ingredients are community participation, discussion and outreach. Based on the results of surveys and interviews conducted at the end of community service activities, 87% of the community understands how to make hand sanitizers made from natural ingredients, 95% of the community understands about COVID-19 and its symptoms of infection, 91% of the community understands efforts to prevent transmission of COVID-19, 88 % of people have understood the new normal policy (new normal habits), and 97% of people have experienced a decrease in income.
Dynamics of Tropical Peatlands Characteristics and Carbon Stocks as Affected by Land Use Conversion and Ages of Land Use in Riau Province, Indonesia Juliano, Gian; Suwardi, Suwardi; Sudadi, Untung
JOURNAL OF TROPICAL SOILS Vol 29, No 1: January 2024
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2024.v29i1.23-32

Abstract

The dynamics and patterns of relationships between the characteristics of Indonesian tropical peat involving a function of time (ages of land use) in the context of land conversion have yet to be widely reported. The effects of tropical peatland use change are generally discussed regarding C emissions, with the limited literature identifying dynamic soil characteristics as these changes occur. This study used a survey method. We identified the physical, chemical, and C stock characteristics of peat in forest locations, oil palm plantations with a land use age of 0-5 years,>5-10 years,>10 years, and agricultural land with a land use age of 0-5 years and >5-10 years to find out the dynamics of soil characteristics. Land use changes from peat swamp forests to oil palm plantations and agricultural land, and the longer age of land use results in an increase in BD (especially at the top layer), ash content, pH, Total-N, total-P2O5, total-K2O, but there was a decrease in water content, fiber content, Organic-C, E400/E600, and soil C stocks. The alignment of economic, social, and ecological interests was directed to water and land management by regulating the area’s hydrological system and increasing peat stability.
Dynamics of Tropical Peatlands Characteristics and Carbon Stocks as Affected by Land Use Conversion and Ages of Land Use in Riau Province, Indonesia Juliano, Gian; Suwardi, Suwardi; Sudadi, Untung
JOURNAL OF TROPICAL SOILS Vol. 29 No. 1: January 2024
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2024.v29i1.23-32

Abstract

The dynamics and patterns of relationships between the characteristics of Indonesian tropical peat involving a function of time (ages of land use) in the context of land conversion have yet to be widely reported. The effects of tropical peatland use change are generally discussed regarding C emissions, with the limited literature identifying dynamic soil characteristics as these changes occur. This study used a survey method. We identified the physical, chemical, and C stock characteristics of peat in forest locations, oil palm plantations with a land use age of 0-5 years,>5-10 years,>10 years, and agricultural land with a land use age of 0-5 years and >5-10 years to find out the dynamics of soil characteristics. Land use changes from peat swamp forests to oil palm plantations and agricultural land, and the longer age of land use results in an increase in BD (especially at the top layer), ash content, pH, Total-N, total-P2O5, total-K2O, but there was a decrease in water content, fiber content, Organic-C, E400/E600, and soil C stocks. The alignment of economic, social, and ecological interests was directed to water and land management by regulating the area’s hydrological system and increasing peat stability.
SOIL FAUNAL DIVERSITY AS A BIOINDICATOR OF SOIL HEALTH ACROSS DIFFERENT LAND-USE TYPES Juliano, Gian; Mahardika, Rabbirl Yarham; Hidayah, Anggraeni Nur; Mardhiah, Mira; Alayya, Nahdlia Putri; Prayudi, Haikal Caesa; Putri, Elsa Kumala; Sulistiyawati, Dita; Dirman; Sagala, Mariyetha; Gusviani, Nisa Azzahra
JTSL (Jurnal Tanah dan Sumberdaya Lahan) Vol. 13 No. 1 (2026)
Publisher : Departemen Tanah, Fakultas Pertanian, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jtsl.2026.013.1.13

Abstract

This study examines soil mesofauna and macrofauna as bioindicators of soil health and ecological integrity across three land-use systems: oil palm plantations, open lands, and bamboo forests. Land-use change increasingly threatens soil biodiversity and ecosystem functioning in tropical regions, where soil organisms are key to nutrient cycling, aggregation, and ecological resilience. Understanding how land use influences soil faunal communities is crucial for assessing belowground integrity. Despite their critical ecological roles, soil faunal indicators are rarely integrated into soil health assessments in tropical systems. Addressing this gap, this study compares soil mesofauna and macrofauna diversity across contrasting land uses to establish their potential as reliable bioindicators. Soil samples were collected from the surface layer (0–10 cm) using standardized coring under uniform topography, soil type, and climate. Systematic random sampling was applied, with mesofauna extracted using Berlese-Tullgren funnels and macrofauna extracted by manual hand-sorting following the TSBF method. Specimens were identified to the order level. Shannon-Wiener analysis showed that bamboo forests supported the most complex and functionally rich communities (mesofauna H′ = 1.498; macrofauna H′ = 0.309), followed by oil palm plantations and open lands. Acari and Collembola were dominant mesofauna sensitive to habitat quality, while Formicidae and Diplopoda reflected higher trophic and structural roles. Open lands exhibited low diversity and dominance of stress-tolerant taxa, indicating reduced ecological function. The integrated assessment of mesofauna and macrofauna provides a robust framework for evaluating soil health, highlighting vegetation complexity as a driver of nutrient cycling, aggregation, and microbial activity.
Co-Authors Alayya, Nahdlia Putri Besri Nasrul Dirman Gusviani, Nisa Azzahra Hengki Firmanda Hidayah, Anggraeni Nur Mahardika, Rabbirl Yarham Mardhiah, Mira Prayudi, Haikal Caesa Putri, Elsa Kumala Sagala, Mariyetha Sulistiyawati, Dita Suwardi Suwardi Untung Sudadi