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Bambang Gonggo Murcitro
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Department of Soil Science, Faculty of Agriculture, University of Bengkulu, WR Supratman St. Kandang Limun, Bengkulu 38371 INDONESIA
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TERRA : Journal of Land Restoration
Published by Universitas Bengkulu
ISSN : -     EISSN : 26210207     DOI : https://doi.org/10.31186/
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
TERRA is a scientific journal that publishes research results related to resource issues and agricultural productivity widely, soil science, plant science, and forest science for land restoration.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Tanah
Articles 80 Documents
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The Potential for Cultivating Nutmeg (Myristica fragrans Houtt) in Rimbo Pengadang and Topos Districts of Lebong Regency Nabella, Reni; Hindarto, Kanang Setyo; Barchia, Muhammad Faiz; Widiyono, Heru; Supanjani
TERRA : Journal of Land Restoration Vol. 7 No. 1 (2024)
Publisher : BPFP Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/terra.7.1.23-32

Abstract

The research, conducted from January to September 2023, aimed to map land suitability classes for nutmeg plant development. The evaluation results are presented descriptively and involve three main stages: pre-survey, field survey, and tabulation with data analysis. Primary data collected for this research include soil analysis results from the laboratory, complemented by secondary data. The determination of land suitability utilizes matching techniques for each land characteristic. The actual land suitability results for nutmeg in Rimbo Pengadang and Topos Districts are categorized as follows: S3eh (37.77%) 14,460.93 ha, with the limiting factor being erosion hazard. S3na eh (37.07%), 14,175.10 ha, with limiting factors related to nutrient availability and erosion hazards, S3na (6.77%): 2,592.64 ha, with limiting factors in nutrient availability, S2wa nr na eh (5.34%): 2,044.04 ha, facing limitations in water availability, nutrient retention, nutrient availability, and erosion hazard, S3rc eh (1.30%) 499.43 ha, with a limiting factor for rooting media and erosion hazard, S3rc (0.90%): 346.35 ha, with a limiting factor in rooting media and N (not suitable) (9.10%) 3,484.74 ha. Regarding potential land suitability, the classes are as follows: S1 (44.89%) 17,186.07 ha, S2 (43.80%) 16,767.80 ha, S3rc (2.21%) 845.79 ha, and S3 (9.10%): 3,484.74 ha. The areas with potential for developing nutmeg plants in Rimbo Pengadang and Topos Districts, Lebong Regency, include secondary forest, mixed dry land farming, open land, and bushes.    
Co-application of Arbuscular Mycorrhizae via Seed Coating and Phosphorus Fertilizer for Enhancing Growth, Yield, and Nutrient Uptake in Ultisols for Maize Marwanto, Marwanto; Bustamam, Hendri; Handajaningsih, Merakati; Anggraini, Septiana
TERRA : Journal of Land Restoration Vol. 7 No. 1 (2024)
Publisher : BPFP Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/terra.7.1.8-13

Abstract

A field trial was conducted to determine the efficiency of AMF inoculation for enhancing growth and yield performance of maize, root colonization, soil available P, and P uptake in Ultisols amended with different P dosages. This experiment was conducted in a 3 x 3 factorial scheme under complete randomized  design with three AMF inoculation methods and three different P levels (0, 60, and 120 kg P2O5 ha-1) in five replications. Data were collected on plant growth, yield parameters, soil available P, P uptake, and root colonization. Results showed that inoculation via seed coating at 60 kg P2O5 ha-1 gave a significant (p<0.05) increase in  growth traits (average of 25%), biomass production, grain yield (average of 30%), soil P availability, P uptake, and root colonization. Inoculation via seed coating combined with 60 produced the same values of all the tested parameters with and seed coating inoculation and soil inoculation at120 kg P2O5 ha-1. Thus, seed coating was as effective tool as soil inoculation for AMF delivery and capable of reducing 50% of P fertilizer use. For these reasons, co-application of P fertilizer and AMF inoculation via seed coating could be practiced to improve corn yields on poor Ultisols.  
Annual Flood Phenomenon and Fertility Status of Rice Soil in The Coastal Area of Bengkulu Putra, Dio Rizki Ade; Sulistyo, Bambang; Barchia, Muhammad Faiz; Utami, Kartika; Rauf, Abdul
TERRA : Journal of Land Restoration Vol. 7 No. 1 (2024)
Publisher : BPFP Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/terra.7.1.1-7

Abstract

[ANNUAL FLOOD PHENOMENON AND FERTILITY STATUS OF RICE SOIL IN THE COASTAL AREA OF BENGKULU]. The rice fields in Rawa Makmur Village were agricultural land that was affected by annual floods. Soil fertility status is important for increasing the productivity of paddy. The research aimed to get the fertility status of soil affected by annual flood disasters, evaluating and mapping the distribution of soil fertility status at the research location. The methods used in this research include survey and soil testing methods at the Soil Science Laboratory, Faculty of Agriculture, Bengkulu University. Further evaluation of soil fertility status is in accordance with technical instructions from the Soil Research Center, Bogor (1995). This research was conducted in June – August 2023. The soil CEC value from each sampling point was classified as high with values ranging from 28.15 me/100 g - 39.83 me/100 g. The base saturation value in the study was classified as very low to moderate with values ranging from 11.49% - 40.08%. Soil organic C at the research location from each sampling point was classified as moderate to very high with values ranging from 2.42% - 5.97%. The soil phosphorus content at the research locations observed was classified as very low to low with values ranging from 2.69 mg/100 g – 12.11 mg/100 g. The soil potassium content at each sample point at the research location observed was classified as very low with values ranging from 0.14 mg/100 g – 1.43 mg/100 g. The research results show that the flood phenomenon has a significant impact on soil fertility. The soil fertility status at the research location is classified as low. Soil fertility parameters which are limiting factors in the status of soil fertility in Rawa Makmur Village are phosphorus, potassium and pH. So it is necessary to add P and K fertilizer to improve the soil fertility status.
The Effect of Foliar Application of Azolla Liquid Organic Fertilizer on Growth and Yield of Rice in Swampy Soil Rohayani, Mei; Widodo; Masdar; Gusmara, Herry
TERRA : Journal of Land Restoration Vol. 7 No. 1 (2024)
Publisher : BPFP Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/terra.7.1.14-22

Abstract

Rice cultivation faces challenges due to limited land availability despite increasing demand. Utilizing swamp land for cultivation presents an alternative, albeit hindered by difficult-to-control water conditions and less effective fertilizer spread. To ensure optimal nutrient supply, foliar application of Azolla liquid organic fertilizer (LOF) is explored. This study investigates the ideal concentration and frequency of Azolla LOF application for rice growth and yield. Employing a split plot design, the main plot assesses LOF concentration (3%, 6%, 9%, 12%), while the subplot evaluates application frequency (1, 2, 3 times). Results indicate that a 9% LOF concentration yields the highest tiller count (17.99), longest panicle (25.788 cm), highest grain count per panicle (158.2978), heaviest grain weight per hill (45.878 g), and highest grain weight per plot (3457.52 g). However, the fastest flowering period (54 DAP) occurs with a 12% LOF concentration. Applying Azolla LOF three times achieves the earliest flowering (55.25 DAP), while two applications yield the longest panicle (25.03 cm). Notably, no interaction is observed between LOF concentration and application frequency on rice growth and yield. These findings provide insights into optimizing Azolla LOF application for enhanced rice cultivation in swamp lands.    
Evaluation of the Fertility Status of Rice Fields in Giri Jaya Village, Nagrak District, Sukabumi Regency Rahmayuni, Erlina; Elfarisna; Herman, Welly; Putri, Elsa Lolita; Kurniati
TERRA : Journal of Land Restoration Vol. 7 No. 1 (2024)
Publisher : BPFP Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/terra.7.1.42-47

Abstract

The research comprises three stages, which include: Field research, Laboratory research, encompassing the analysis of soil chemical properties. Data analysis, conducted both descriptively and quantitatively. Composite soil samples from rice fields were collected at three different elevations (top, middle, and bottom) at a depth of 1-20 cm in the surface layer of the rice field soil. Analysis of paddy soil samples involved measuring pH H2O using the electrometric method, total N, and cation exchange capacity (CEC) using the titrimetric method, potential K2O using the flame photometric method, potential P2O5 and organic C using the spectrophotometric method, K exchangeability and Na exchangeability using the flame photometric method, and Ca exchangeability and Mg exchangeability using the AAS method. Data obtained from soil analysis at different elevations were compared based on soil type for each observed parameter. The research results indicate that the evaluation of nutrient status is influenced by altitude. Land situated at lower elevations exhibits better soil fertility status, followed by land at the upper and middle elevations.
Growth and Yield Response of Detam 4 Soybean Variety on Single P Fertilizer and Vermicompost Application in Coastal Land Cahyadi, Robi; Pujiwati, Hesti; Murcitro, Bambang Gonggo; Suprijono, Eko; Prameswari, Wuri
TERRA : Journal of Land Restoration Vol. 7 No. 1 (2024)
Publisher : BPFP Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/terra.7.1.33-41

Abstract

This research was conducted from July to November 2020 in the coastal lands of Ratu Agung District, Lempuing Village, Kuala Alam, Bengkulu City, at an elevation of 5 meters above sea level. The study aimed to investigate the interaction between vermicompost and single phosphorus (P) fertilizer on the growth and yield of Detam 4 soybean plants in coastal lands, focusing on determining the optimal doses for both inputs. The experiment was designed as a two-factor study using a factorial Randomized Complete Block Design (RCBD) with three replications. The first factor was vermicompost application at four levels: 0 tons ha-1, 5 tons ha-1, 10 tons ha-1, and 15 tons ha-1. The second factor was phosphorus application at three levels: 0 kg ha-1, 50 kg ha-1, and 100 kg ha-1. Observed variables included plant height, number of leaves, flowering age, number of productive branches, number of pods per plant, pod weight per plant, pod weight per plot, seed weight, and root weight. Data were analyzed using ANOVA at the 5% significance level, with a subsequent 5% LSD test if significant effects were found. The application of vermicompost at a dose of 10 tons ha-1 without the addition of single P fertilizer results in the best growth of the soybean variety Detam 4, characterized by the highest average shoot dry weight of 41.133 g, the fastest flowering age, and the greatest number of productive branches. The best yield of the Detam 4 soybean variety is achieved with the application of vermicompost at a dose of 15 tons ha-1, indicated by the highest number of productive branches and seed weight per plant. The independent application of single P fertilizer does not significantly enhance the growth and yield of the Detam 4 soybean variety in coastal land conditions.  
Growth, Yield and Uptake of P Four Variety Soybeans on Biocomposted Coastal Lands Yani, Dewi Septi; Bertham, Yudhi Harini; Arifin , Zainal
TERRA : Journal of Land Restoration Vol. 7 No. 1 (2024)
Publisher : BPFP Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/terra.7.1.48-52

Abstract

Soybeans (Glycine max (L.) Merrill) are a popular food commodity in Indonesia, but domestic production is still insufficient to meet the demand. To increase production, planting superior varieties on coastal land could be a viable solution. Despite the challenging biological, physical, and chemical conditions of coastal land, nutrients such as phosphorus (P) are crucial for enhancing production. Typically, the phosphorus content in the soil is lower than that of nitrogen (N) and potassium (K), and the ability of soybean plants to absorb phosphorus varies among varieties. This research aims to compare the growth, yield, and phosphorus uptake of four soybean varieties on biocomposted coastal land. The study was conducted using a Randomized Complete Block Design (RCBD) with a single factor consisting of four soybean varieties: Wilis, Anjasmoro, Malika, and Detam 1. The results indicate that the Anjasmoro, Wilis, Detam 1, and Malika varieties exhibit similar responses in phosphorus absorption. However, the Anjasmoro and Wilis varieties demonstrate better adaptability compared to Malika and Detam 1, as evidenced by their superior growth and yield. This suggests that Anjasmoro and Wilis have a higher capability to adapt to the challenging conditions of coastal land. Therefore, these two varieties are recommended for cultivation in coastal areas to boost soybean productivity, ensuring the sustainability and stability of the national food supply.
Decomposition of Oil Palm Empty Fruit Bunches of Various Sizes Treated With Excelzyme Habibullah, Fakhrul; Prawito, Priyono; Hasanudin; Widiyono, Heru; Purwanti, Sri
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.8.1.30-36

Abstract

The rapid expansion of the palm oil industry has led to an increased accumulation of Oil Palm Empty Fruit Bunches (OPEFBs), creating significant environmental challenges due to their slow decomposition rate and high lignin content. This study investigates the decomposition of OPEFBs of varying sizes treated with Excelzyme, a commercial enzyme formulation designed to enhance lignocellulosic biomass degradation. The research was conducted using a 2 factor Completely Randomized Design (CRD), with Excelzyme dosages (250 mL, 375 mL, and 500 mL) and OPEFB sizes (unchopped, 2-5 cm, 1-2 cm, and <0.5 cm) as treatment factors. The decomposition process was evaluated based on temperature fluctuations, pH, total nitrogen, organic carbon, and lignocellulosic composition (hemicellulose, cellulose, and lignin) over an 8-week period. Results indicated that Excelzyme significantly influenced organic carbon reduction, hemicellulose degradation, and lignin breakdown, with higher dosages accelerating the decomposition process. The size of OPEFBs also played a crucial role, as smaller particle sizes facilitated microbial and enzymatic activity, leading to more efficient decomposition. Statistical analysis revealed significant interactions between enzyme dosage and OPEFB size, with the combination of 500 mL Excelzyme and <0.5 cm OPEFBs showing the highest decomposition rate. Temperature monitoring indicated a peak around week 5, suggesting optimal microbial activity and enzymatic breakdown at this stage. These findings highlight the potential of Excelzyme treatment in optimizing OPEFB decomposition, offering a sustainable approach to managing palm oil industry waste. The study contributes to improved biotechnological strategies for waste management and resource utilization, paving the way for enhanced agricultural sustainability and environmental conservation.
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. 
Evaluation of Land Suitability and Potential Development of Cardamom (Amomum compactum L.) in Padang Jaya Subdistrict, North Bengkulu Regency Faisal, Muhammad; Sulistyo, Bambang; Hindarto, Kanang Setyo; Lovita, Vinni
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.8.1.10-19

Abstract

Cardamom (Amomum compactum) is a high-value spice with significant applications in the pharmaceutical, food, and cosmetics industries. The increasing global demand makes cardamom a promising commodity for agricultural expan sion. However, limited information on land suitability in Padang Jaya Subdistrict poses a challenge to optimizing cultivation. This study aimed to map the land suitability classes for cardamom cultivation and assess the potential for cardamom development in Padang Jaya Subdistrict, North Bengkulu. The research involved in field surveys, soil sampling, laboratory analysis, and GIS-based land suitability evaluation using the FAO framework. Key parameters as sessed included rooting media, nutrient retention, slope, and climate condition in the past 10 years. The FAO classification system categorized land into four suitability classes, namely: S1 (high suitable), S2 (moderately suitable), S3 (marginally suitable), and N (not suitable). The result indicate the actual land suitability is predominantly S3nrnaeh and S2nrnaeh, with major limiting factors including rooting media, nutrient retention, nutrient availability, and slope. Land improvement efforts such as liming, organic matter applications, fertilization, and soil conservation techniques led to an increase in land suitability, with 62.3% of S3 land upgraded to S2 and 37.7% of S2 land reached S1. Furthermore, GIS-based analysis identified four land cover types suitable for extensification: mixed gardens, seasonal crops, plantations, and bare land, totaling 8,747.71 hectares. These findings provide valuable insights for optimizing land use planning, improving productivity, and promoting sustainable agricultural development. Integrating GIS and remote sensing in future studies could enhance land suitability assessments with a more refined spatial scale. The results also serve as a scientific reference for policymakers and farmers in designing sustainable land management strategies and minimizing environmental degradation.

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