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All Journal Bionatura Journal of Tropical Soils Agrovigor: Jurnal Agroekoteknologi Naturalis : Jurnal Penelitian Pengelolaan Sumberdaya Alam dan Lingkungan Jurnal Ilmu-Ilmu Pertanian Indonesia Jurnal Solum TERRA : Journal of Land Restoration Martabe : Jurnal Pengabdian Kepada Masyarakat Akta Agrosia Dharma Raflesia : Jurnal Ilmiah Pengembangan dan Penerapan IPTEKS PublikA, Jurnal Ilmu Administrasi Negara Jurnal Pengabdian kepada Masyarakat Dewantara
Bandi Hermawan
University Of Bengkulu
Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Education Environmental Science Immunology & microbiology Social Sciences Other

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Soil Moisture Differences Between Continues Measurements of Three Crop Managements Putri, Elsa Lolita; Hermawan, Bandi; Agustian, Indra; Hasanudin
TERRA : Journal of Land Restoration Vol. 6 No. 1 (2023)
Publisher : BPFP Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/terra.6.1.33-39

Abstract

Soil moisture prediction models on a regional scale can be developed by looking for the relationship between water balance and basic soil properties such as texture and organic matter.  Our previous research has obtained soil dielectric properties measurement technology as an estimator of soil moisture that can be done quickly in the field. The purpose of this study was to apply this technology in estimating the characteristics of soil moisture insitu in the field on a district scale in Bengkulu Province.  The research was conducted for three years in three different districts in Bengkulu Province. The results of the third year to early October 2021 study showed that land under thicket stands and oil palm had higher weekly groundwater fluctuations than under rubber. The highest impedace of groundwater below the thickets and palms are present at depths of 0-20 cm and 0-10 cm, respectively.  However thickets have fluctuations in the depth of total groundwater (0-30 cm depth) that are higher than those of oil palms during three months of measurement.  In contrast, the soil moisture content profile under the rubber stand is relatively more stable against the influence of weekly rainfall during the measurement. An analysis of the relationship between non-free variables (field capacity moisture content, permanent wilting point and water available) and free variables (sand, dust, clay and C-organic) will be carried out in November 2021  
Mapping the Distribution of Water Retention and Other Physical Properties of Soil on Intensive Agriculture Land in the Village Sumber Urip, Selupu Rejang District, Rejang Lebong Regency Permata, Nathasya Vira; Hermawan, Bandi; Gusmara, Herry
TERRA : Journal of Land Restoration Vol. 6 No. 2 (2023)
Publisher : BPFP Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/terra.6.2.65-72

Abstract

This research aims to map water availability on intensively cultivated agricultural land so that the land management method will be carried out appropriately. The method used to determine the sample points was the stratified sampling method, and 31 soil sample points were obtained. Soil samples are analyzed for their physical properties, which include soil texture, total pore space, bulk density, permeability, potential of free energy, and water content. The analysis results are presented as an overlay map of the measured variables. The research results show that agricultural land on a slope of 0-15% with a total area of 233 ha has good soil water retention in terms of the physical properties of the soil, so there is no need to improve soil management. Agricultural land on a slope of 15-25% with an area of 79 ha requires additional treatment to increase water retention by adding soil amendments to increase total soil pore space. Agricultural land on a slope of 25-45% with an area of 124 ha has excellent soil water retention supported by soil conservation practices in making terraces and installing plastic mulch. Meanwhile, agricultural land on a slope of >45% with an area of 33 ha has poor soil water retention, so soil conservation practices are needed.
Groundwater Retention Based on Toposequence in People’s Oil Palm Plantations Utami, Wanda Afrilia; Hermawan, Bandi; Prawito, Priyono; Barchia, Muhammad Faiz; Sukisno; Putri, Elsa Lolita
TERRA : Journal of Land Restoration Vol. 7 No. 2 (2024)
Publisher : BPFP Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/terra.7.2.110-115

Abstract

Soil, water, and crops are interdependent components of agricultural systems, and understanding their characteristics and interactions is critical for effective agricultural management. This study investigates the relationship between soil water-holding capacity and varying land slope gradients. The research was conducted on a community oil palm plantation in Talang Tengah I Village, Pondok Kubang District, Central Bengkulu Regency. A purposive sampling method was applied at five slope categories: flat (0–8%), sloping (8–15%), moderately steep (15–25%), steep (25–45%), and very steep (45–100%). Data analysis was performed using Partial Least Squares Structural Equation Modeling (PLS-SEM) with WarpPLS 7.0 software. The findings demonstrate a significant influence of slope on soil water-holding capacity. Increasing slope gradients are associated with reduced soil permeability, increased bulk density, decreased total pore space, and lower soil organic carbon content, collectively leading to diminished water-holding capacity. The developed model accurately represents the relationships between variables, indicating that slope directly affects organic matter, sand content, and permeability, while bulk density impacts total pore space and permeability, which in turn influence water-holding capacity. The results emphasize the importance of considering land slope in soil and water management strategies to optimize agricultural productivity. Future applications of this model could guide sustainable land-use planning and inform erosion control measures to maintain soil quality and water availability in sloped agricultural landscapes  
Effect of Incubation of Goat Manure on Growth and Yield of Sweet Corn Saputra, Dedi; Handajaningsih, Merakati; Hermawan, Bandi
Akta Agrosia Vol 20 No 2 (2017)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Fakultas Pertanian, Universitas Bengkkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (800.22 KB)

Abstract

ABSTRACTGoat manure is one of organic fertilizers used as the main input in organic farming practice in Indonesia.  Since the slower availability of  nutrient elements to the plants is the characteristic of this manure compared to the other manures, then research on the time of incubation needs to be evaluated.  The study was conducted  in Medan Baru Fields Experiment, district Muara Bangkahulu Bengkulu city. Randomized Complete Block Design was arranged for the experiment. Time incubation of goat manure in the field was single factor consisted of  no incubation, 1 week before planting, 2 weeks before planting, 3 weeks before planting, and 4 weeks before planting.  As much as 20 tons/ha  of  goat manure was incorporated in the field, no additional inorganic fertilizer was applied on sweet corn plants var. Bonanza F1.  The sweetcorn plants responded better growth to treatment 4 weeks incubation of goat manure compared to treatment of no incubation. Yet incubation time of goat manure showed no  significant effects on sweet corn yieldKeywords: incubation,goat manure, sweet corn, growth, yield 
Evaluation of Selected Soil Physical Properties in Oil Palm, Rubber, and Forest Land in Mukomuko Regency Nurwanto, Ahmad; Hermawan, Bandi; Widiyono, Heru; Sulistyo, Bambang; Hindarto, Kanang Setyo
TERRA : Journal of Land Restoration Vol. 8 No. 1 (2025)
Publisher : BPFP Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/terra.8.1.20-29

Abstract

This study investigates the influence of land use on soil physical properties and horizon thickness in Mukomuko Regency, Indonesia, to assess the impacts of agricultural practices on soil quality. Conducted between February and April 2020, the research utilized a nested design across four districts, with laboratory analyses performed at the Soil Science Laboratory, Bengkulu University. Land use types evaluated included oil palm, rubber, and natural forest. Variables measured comprised soil structure, horizon thickness, aggregate stability, bulk density (BD), texture, and organic carbon (C-organic). Statistical analysis (ANOVA, p < 0.05) revealed significant effects of land use on BD, C organic content, and soil texture, whereas aggregate stability was not significantly influenced by vegetation type or depth. Forest soils exhibited the highest C-organic content (5.78%) and lowest BD (0.82 g cm⁻³), contrasting with oil palm soils, which had the lowest C-organic content (4.22%) and highest BD (0.86 g cm⁻³). Texture analysis showed forest soils had higher sand (19.69%) and clay (50.20%) fractions, while rubber land had the highest silt content (57.59%). Soil physical properties generally declined with depth under rubber and oil palm but fluctuated in forest soils. These results suggest that vegetation type significantly affects soil quality, with forest ecosystems maintaining superior soil conditions compared to intensively managed agricultural systems. Adoption of sustainable land management practices is essential to mitigate soil degradation and enhance long-term productivity. 
Vermicompost Buffering Capacity to Reduce Acidification of Pb and Cd Contaminated Inceptisols and Entisols Muktamar, Zainal; Hermawan, Bandi; Wulandari, Wulandari; Prawito, Priyono; Sudjatmiko, Sigit; Setyowati, Nanik; Fahrurrozi, Fahrurrozi; Chozin, Mochammad
JOURNAL OF TROPICAL SOILS Vol. 26 No. 1: January 2021
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2021.v26i1.1-9

Abstract

Contamination of  heavy metals on the soil leads to an increase in its acidity. Vermicompost application is commonly used to improve the properties of soil. The study was carried out to determine the reduction of the acidity in Pb and Cd contaminated soils under the application of vermicompost. Two laboratory experiments were set using Completely Randomized Design (CRD) with two factors. The first factor was soil samples, vis Inceptisols, and Entisols, and the second factor was the rates of vermicompost, consisted of 0, 5, 10, 15 g kg-1. The treatment combination was repeated three times. The soils were pretreated with 10 mg kg-1 Pb or Cd using Pb(NO3)2 and Cd(NO3)2. Three hundred kg soil sample was incorporated with vermicompost and placed in a 500 ml plastic bottle. The mixtures were incubated for eight weeks, and the moisture of the soil was maintained at field capacity. The acidity and soil temperature were monitored every week. The study indicated that Pb contaminated soil acidity increased to the sixth week of the incubation and decreased afterward. However, the acidity of Cd contaminated soil was consistently increased during the incubation. Treatment of vermicompost significantly lowered the acidity of both Pb and Cd contaminated soils. Contaminated Entisols had a higher response to the application of vermicompost than that of Inceptisols. This finding is significant in assessing acidity risk and possible management intervention for Pb and Cd contaminated soils.
Changes in Soil Physical Properties Following Applications of Vermicompost Superimposed with Liquid Organic Fertilizer Hermawan, Bandi; Muktamar, Zainal; Fahrurrozi, Fahrurrozi; Setyowati, Nanik; Sujatmiko, Sigit; Chosin, Muhammad; Putri, Elsa Lolita
JOURNAL OF TROPICAL SOILS Vol. 29 No. 2: May 2024
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2024.v29i2.107-113

Abstract

Soil properties play essential roles in transmitting and holding precipitation water; therefore, they determine the amount of plant-available water in the soil profile. The study aimed to compare the size distributions of Andept soil pores following four-year applications of vermicompost and liquid organic fertilizer (LOF). The experiment was done from 2016 to 2019. The five doses of vermicompost (5, 10, 15, 20, and 25 Mg ha-1) set as the main factor, supplemented with 0 and 100 percent concentrations of LOF as a sub-factor, were arranged in a split-plot design with three replicates. Results showed that adding LOF decreased slow-drainage pores significantly when combined with 10 Mg ha-1 of vermicompost. However, the pore changes by LOF were not significant when applied to other doses of vermicompost. Applying vermicompost and LOF lowered the slow-drainage pores by increasing soil organic carbon and reducing soil particle density. The findings suggest that vermicompost and LOF act as soil ameliorants to reduce water loss by drainage from soil profiles. The study highlights the importance of soil properties in determining plant-available water in the soil profile.
Pola Frekuensi Kebutuhan Air Irigasi pada beberapa Penggunaan Lahan dengan Teknologi Otomatisasi Monitoring Pengendalian Kelembaban Tanah berbasis Sensor Dielektrik Putri, Elsa Lolita; Fitriani, Nur; Hermawan, Bandi; Herman, Welly
Jurnal Solum Vol. 19 No. 2 (2022)
Publisher : Departemen Ilmu Tanah dan Sumberdaya Lahan, Fakultas Pertanian Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jsolum.19.2.53-61.2022

Abstract

Indonesia is an agrarian country and requires the development of improvements in soil productivity. The decline in soil productivity for agriculture is currently caused by several factors, namely land conversion to a decrease in the quantity of ground water. The actual frequency pattern of irrigation water needs with the application of dielectric sensor technology is carried out in cultivation in order to create efficiency in the provision of irrigation water. This research was conducted using a single factor experimental method with repeated measurements on three types of land use, namely land without vegetation, soil with grass vegetation, and soil with tomato cultivation. Measurements were carried out using an automated application of soil moisture monitoring based on dielectric technology with two measuring periods. Each measuring period consists of two weeks or fourteen days. Soil sample analysis was carried out at the Bengkulu University soil laboratory. The results of the observations were analyzed using variance (ANOVA) on the 5% F test table, the BNT test was carried out at the 5% level on data that had a significant effect. The results showed that the frequency of giving irrigation water on the 1st day to the 14th day in the 2 observation periods on the Bera land was the most common compared to the use of grass vegetated land and the use of tomato cultivation land, which was 5 times in the 1st and 4th periods. times in the 2nd period with 14 days each. Provision of irrigation water will stop automatically when the dielectrometer shows the field capacity so that it can show the frequency of giving different water to each field.Key words : Dielectric; Frequency; Irrigation water
PENINGKATKAN PRODUKTIVITAS DAN KESEJAHTERAAN PETANI KOPI DESA RINDU HATI MELALUI OPTIMALISASI ALAT PENETUAN KADAR AIR BIJI KOPI BERBASIS TEKNOLOGI DIELEKTROMETER Hermawan, Bandi; Alnopri, Alnopri; Herman, Welly; Putri, Elsa Lolita
Martabe : Jurnal Pengabdian Kepada Masyarakat Vol 5, No 7 (2022): Martabe : Jurnal Pengabdian Kepada Masyarakat
Publisher : Universitas Muhammadiyah Tapanuli Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31604/jpm.v5i7.2652-2657

Abstract

Pengabdian peningkatan produktivitas dan produktivitas kopi di Desa Rindu Hati melalui optimalisasi alat petani bertujuan tentang kadar air biji kopi berbasis teknologi dielektrometer yang dilakukan untuk melakukan koordinasi dan sosialisasi kopi dan koordinasi pengumpul kadar air biji kopi. Metode yang diterapkan dalam kegiatan pengabdian ini adalah Participatory Rural Appraisal (PRA) untuk menyebarkan informasi dalam kelompok tani dan pedagang pengumpul biji kopi. Kegiatan pengabdian dilakukan di Desa Rindu Hati Kabupaten Bengkulu Tengah Provinsi Bengkulu dengan khalayak sasaran kelompok tani simpang jernih dengan anggota kelompok berkumpul 20 orang dan pedagang pengumpul biji kopi.Pengabdian yang sesuai dengan koordinasi dan sosialisasi terhadap air kopi untuk meningkatkan produktivitas petani kopi. Target capaian dari kegiatan yang dilakukan adalah adanya peningkatan pemahaman kelompok tani simpang jernih tentang menentukan kadar air kopi. peningkatkan pemahaman petani kopi dan pedagang pengumpul biji kopi dalam menentukan kadar air biji kopi melalui pendeteksian kadar air berbasis teknologi dielektrometer.
OPTIMALISASI PENGEMBANGAN RUMAH BIBIT PADA KELOMPOK WANITA TANI REZEKI BERSAMA DI KELURAHAN BERINGIN RAYA KOTA BENGKULU Herman, Welly; Adiprasetyo, Teguh; Hermawan, Bandi
Martabe : Jurnal Pengabdian Kepada Masyarakat Vol 5, No 6 (2022): Martabe : Jurnal Pengabdian Kepada Masyarakat
Publisher : Universitas Muhammadiyah Tapanuli Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31604/jpm.v5i6.1991-1994

Abstract

Seedling house is a very important thing to support plant propagation in order to realize the Sustainable Food House Area (KRPL) program. Through this service activity, the service team tries to develop a simple nursery to support the program. The objectives of this activity are (1) to determine the potential for developing a nursery to create a sustainable food house area in the Beringin Raya Village, Bengkulu City and (2) to increase the ability of the Women Farmers Group (KWT) Sustenance Bersama in managing and developing seedling houses. The method used is a PRA (Participatory Rural Appraisal) approach which is implemented through outreach activities and direct practice in the field. The results of this service activity are fostering the spirit of KWT members in optimizing the use of seed houses that have been developed by the service team and increasing community understanding and skills in utilizing seed houses through nurseries of various types of plants. 
Co-Authors - Alnopri - Prasetyo AGUS SUSATYA Agustian, Indra Alnopri . Alnopri Alnopri, Alnopri Andreas Junico Marulitua Situmorang Bambang Gonggo Murcitro Bambang Sulistyo Bambang Sulistyo Benny Bayu Prabowo Bieng Brata Chosin, Muhammad Chozin, Mochammad Dedi Saputra Dian Sari Dismini Arti Dwi Anggraeni Dwi Wahyuni Ganefianti Elsa Lolita Putri Esi Asyani Listyowati Evira Khairunisa Putri Fahrurrozi Fahrurrozi Fahrurrozi Fahrurrozi Fahrurrozi, Fahrurrozi Faiz Barchia Gusmara, Herry Haryaningsih, Sri Hasanudin Hasanudin Hasaanudin Hasanudin Hasanudin Hata Dahlan Herman, Welly Heru Widiyono, Heru Herwan Herwan Hery Suhartoyo Hesti Pujiwati Hindarto, Kanang Setyo Idarman Tarmizi - Impetus Hasada Windu Sitorus Indra Agustian Indra Agustian Ingri Dayana Kartika Ningtias Lolita Putri, Elsa Lusi Afriana M Faiz Barchia M Mustopa Romdhon M. Faiz Barchia M. Faiz Barchia M. Faiz Barchia Maemunah Maemunah Merakati Handajaningsih Mochammad Chozin Movizar Apriandi Muhammad Chosin Muhammad Faiz Barchia, Muhammad Faiz Nanik Setyowati Nanik Setyowati Nanik Setyowati Nur Fitriani NUR FITRIANI Nurwanto, Ahmad Pajrina Pajrina Permata, Nathasya Vira Prawito, Priyono Priyono Prawito Priyono Prawito Putri, Elsa Lolita Raden Mohamad Herdian Bhakti Saryoto Saryoto Satria Putra Utama Sigit Sudjatmiko Sigit Sudjatmiko, Sigit Sigit Sujatmiko Suharyanto Sujatmiko, Sigit Sumardi Sumardi Teguh Adiprasetyo Teguh Adiprasetyo Teguh Adiprasetyo Utami, Wanda Afrilia Vinni Lovita Welly Herman Welly Herman Welly Herman Welly Herman Wendra Kesuma Wijaya Wulandari Wulandari Wulandari Wulandari Yudhi Harini Bertham Zainal Muktamar Zainal Muktamar Zainal Muktamar Zainal Muktamar