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Jurnal Lahan Suboptimal

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Published by Universitas Sriwijaya

ISSN : 22526188 EISSN : 23023015 DOI : -

Core Subject : Agriculture,

Agriculture, Biological Sciences & Forestry

Jurnal Lahan Suboptimal: Journal of Suboptimal Lands (JLSO) (p-ISSN 2252-6188; e-ISSN 2302-3015) publishes original research papers, literature reviews, and short communications that cover on topics relevant to suboptimal lands: freshwater swamps, tidal lowlands, peatlands, dry and dry acid lands, shaded ecosystem, ex-mined lands, saline and marine coastal wetland ecosystems. The Journal serves as a multi-disciplinary forum covering key issues in Suboptimal Lands science and technology, management, policy and ecological economics. The journal is published by Pusat Unggulan Riset Pengembangan Lahan Suboptimal (PUR-PLSO), Universitas Sriwijaya. The journal was first published on April of 2012 with twice per year in frequency on April and October.

Arjuna Subject : -

Articles 323 Documents

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Potensi Pohon Lokal untuk Fitostabilisasi Logam Berat pada Tanah Tercemar Limbah Sianidasi Emas di Lombok Barat E. Handayanto; BD Krisnayanti; N Muddarisna
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 4 No. 1 (2015): JLSO
Publisher : Research Center for Sub-optimal Lands (PUR-PLSO), Universitas Sriwijaya

The discharge of mercury amalgamation and cyanidation tailings of small-scale gold mining in West Lombok to agricultural lands caused Hg, Cd, Cu, Pb and Zn contamination. Phytostabilization may be a feasible approach for the management of contaminated sites. The objective of this study was to search for tree species that are potential for phytostabilization of soils contaminated by small-scale gold mine tailings in West Lombok, Indonesia. Results of this study showed that there were at least 28 tree species found in areas contaminated by gold cyanidatation tailing. Based on cyanide concentration, Hg concentration, and energy of above-ground parts of the identified plants, Duabanga moluccana (DM), Erythrina orientalis (DM)., and Paraserianthes falcataria (PF) were selected to study their phytostabilization potential. Results of plant growth experiment showed that the tolerance of the three species to heavy metals was in the order of Zn > Pb > Cu > Cd. The highest concentration of Cd (0.9 mg/kg) was found in the roots of DM. The highest concentration of Cu (37,7 mg/kg) was found in roots of EO. Roots of PF contained the highest concentrations of Pb (37.7 mg/kg) and Zn (546 mg/kg). The three plant species had metal shoot / metal root ratios of less than one. This indicates that Duabanga moluccana, Paraserianthes falcataria, and Erythrina orientalis are suitable for phytostabilization of Cu, Pb, Cd, and Zn in gold cyanidation tailing contaminated soils of West Lombok, Indonesia

Suitability of Rubber Plantation Land Intercropped with Corn (Zea mays L) Plants in Betung Village of Banyuasin District Yuana Juwita; Joni Karman; Yanter Hutapea; Suparwoto Suparwoto
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 9 No. 1 (2020): JLSO
Publisher : Research Center for Sub-optimal Lands (PUR-PLSO), Universitas Sriwijaya

Juwita Y, Karman J, Hutapea Y, Suparwoto S. 2020. Suitability of rubber plantation land intercropped with corn (Zea mays L) plants in Kelurahan Betung. Jurnal Lahan Suboptimal: Journal of Suboptimal LandsÂ 9(1): 73-79.Rubber is one of the leading commodities of plantations in South Sumatra, especially in Banyuasin District. The opportunity for unused footpath land is a big potential in increasing farmers' income. In Betung Village, besides rubber, the community also raises livestock such as cows. This study aimed to provide information on the actual soil fertility status and see the suitability of the land in the study area when planted with corn plants, as well as the recommendations for the needed technology. The study used a survey method and the soil samples were taken using purposive random sampling method by determining the point diagonally and analyzed in the laboratory. The results of the study showed that the land suitability class at the location was according to the marginal with the limiting factors of water availability (rainfall) and nutrient retention (KB and pH). To obtain optimal corn production results, it is recommended to prepare a rainwater collection area and the addition of lime and organic matter.

Yield Response of Peanut (Arachis hypogaea L.) to Compound Fertilizer Siti Maryam Harahap; Khadijah El Ramija; Erythrina Erythrina
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 9 No. 1 (2020): JLSO
Publisher : Research Center for Sub-optimal Lands (PUR-PLSO), Universitas Sriwijaya

Harahap SM, Ramija KE, Erythrina E. 2020. Yield response of peanut (Arachis hypogaea L.)Â to compound fertilize. Jurnal Lahan Suboptimal: Journal of Suboptimal Lands 9(1): 41-49.The purpose of this study was to evaluate the application effects of three different compound fertilizers on yield, and assess the income increase at different rates of compound fertilizers. Three compound fertilizers namely NPK 14-0-46, NPK 19-9-19 and NPK 11-11-11 was conducted at three different farmersâ€™ field in Langkat District, North Sumatra Province under upland conditions. In each farmersâ€™ field, a Randomized Complete Block Design was applied with four replications per treatment.Â Seven treatments tested consisted of full rate of farmer fertilizer practice and six rates of each compound fertilizer plus half rate of farmer fertilizer practice. In each of compound fertilizer tested, pod yield and seed yield increased quadratically as increasing compound fertilizer rates. The highest pod yield and seed yield of peanut were 1649 kg/ha and 1072 kg/ha, respectively with half rate of FFP + 200 kg of NPK 14-0-46. For compound fertilizer NPK 19-9-19 the highest pod yield and seed yield were 1632 kg/ha and 1032 kg/ha with half rate of FFP + 500 kg of NPK 19-9-19 while for compound fertilizer NPK 11-11-11 the highest pod yield seed yield were 1421 kg/ha and 930 kg/ha with half rate of FFP + 250 kg of NPK 11-11-11. However, adding eachÂ half rate of farmer fertilizer practices withÂ 200 kg of NPK 14-0-46 or 300 kg of NPK 19-9-19 or 250 kg of NPK 11-11-11 with HypoMa-1 cultivar gave the highest values of the benefit for the farmers under upland soil in Langkat, North Sumatra.

Evaluation of Smallholder Oil Palm Plantation Sustainability in Tidal Lowlands of Pulau Rimau Sub-District of Banyuasin Regency Laily Muharani; Muhammad Yazid; Dessy Adriani
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 9 No. 1 (2020): JLSO
Publisher : Research Center for Sub-optimal Lands (PUR-PLSO), Universitas Sriwijaya

Muharani L, Yazid M, Adriani D. 2020. Evaluation of smallholder oil palm plantation sustainability in tidal lowlands of Pulau Rimau Sub-District of Banyuasin Regency. Jurnal Lahan Suboptimal: Journal of Suboptimal Lands 9(1): 80-88.Oil palm is one of the estate commodities that has an important role in the economic activities of the people. Smallholder oil palm plantation as part of the estate still face several constraints, including lack of productivity, institutional inactivity, plantation management that do not meet the standard, farmers' lack of knowledge, and difficulty in obtaining credit. Due to these constraints, oil palm plantation sustainability is put into priority. Oil palm development issues are discussed not only on the economic aspects but also on the environmental aspects. This research is aimed at analyzing the level of oil palm sustainability and evaluating the condition of smallholder oil palm plantations according to the stages of plant development. This research used survey method and was carried out in tidal lowlands of Pulau Rimau Sub-district, Banyuasin Regency in August-September 2019. Smallholder oil palm households were selected using proportionate stratified random sampling. The results showed that there were three aspects of sustainability that were in low criteria, namely institutional, social, and technical aspects. Whereas, economic and environmental aspects were in medium criteria. The average sustainability value of non productive and productive oil palm plantations was in low criteria. Smallholder oil palm households were expected to understand and follow the standards set by ISPO, with the support from local governments and related agencies.

Effectiveness of the Ageratum (Ageratum conyzoides) Leaf Extract as Botanical Fungicide Against Twisted Disease of Shallot Rianosa Rianosa; Hartal Hartal; Setyowati Setyowati
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 9 No. 1 (2020): JLSO
Publisher : Research Center for Sub-optimal Lands (PUR-PLSO), Universitas Sriwijaya

Rianosa R, Hartal H, Setyowati N. 2020. Effectiveness of the Ageratum (Ageratum conyzoides) leaf extract as botanical fungicide against moler diseases of shallot. Jurnal Lahan Suboptimal: Journal of Suboptimal Lands 9(1): 1-10.Â Â Moler is a major disease of onion caused by Fusarium oxysporum f. sp. cepae. Application of synthetic fungicides in the long-term has a negative effect to the environment. Weed leaves of Ageratum (Ageratum conyzoides) have potential to be an anti-fungal, anti-bacterial as well as anti-cancer. This study aimed to determine the best concentration of Ageratum leaf extract to control twisted disease and to compare the effectiveness of botanical fungicide and synthetic fungicide. The research was conducted in June - September 2018 at the Plant Protection Laboratory and greenhouse, University of Bengkulu. The experiment was consists of five Ageratum leaf extract concentrations as a botanical fungicide (i.e. 1%, 2%, 3%, 4%, and 5%), and synthetic fungicide namely mancozeb and metil tiofanat and control treatment (in sterile soil with no fungicide treatment). The experiment used Completely Randomized Design (CRD) with a single factor. Ageratum leaf extract was obtained through the maceration method using ethanol 96%. The application of fungicide was carried out on shallot bulbs before planting. The results showed botanical fungicides from Ageratum leaf extract were effective against twisted disease of shallots, concentration 4% of Ageratum leaf extract resulted in a longer incubation period and lower disease intensity compared to other concentrations, and the effectiveness of Ageratum leaf extract at a concentration of 4% was comparable to that of mancozeb to control twisted disease. Application of both synthetic and botanical fungicide resulted in a higher yield of shallot. Therefore, Ageratum leaf extract has potential as a substitution of synthetic fungicides to control twisted disease of shallots.

Feasibility of Swamp Paddy Farming with New Superior Varieties and Different Planting System Alfayanti Alfayanti; Wilda Mikasari; Taupik Rahman
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 9 No. 1 (2020): JLSO
Publisher : Research Center for Sub-optimal Lands (PUR-PLSO), Universitas Sriwijaya

Alfayanti A, Wilda M, Taupik R. 2020. Feasibility of swamp paddy farming with new superior varieties and different planting system. Jurnal Lahan Suboptimal: Journal of Suboptimal Lands 9(1): 50-56.Efforts to fulfil the community food demands could be achieved by swamp land optimization. One technology that can be developed on swamp land is utilization of new superior variety and planting system. Economic feasibility is one of considerations forÂ farmers to adopt a technology innovation. The study aimed to determine the combination of the most economically viable new superior variety and planting system to be developed in swamp rice farming. The study was conducted from May-August 2016 in Karang Anyar Village Semidang Alas Maras district, Seluma Regency. There are 7 New Superior VarietiesÂ of swamp paddy cultivated; Inpara 1, 2, 3, 6, 7, 8, and Dendang and 1 existing variety as benchmark variety, Cigeulis. The planting system applied were legowo planting system (2:1) with insertion and without insertion. The data used to achieve the research objectives is primary data in the form of farming data to calculate economic benefits and feasibility. Farm profit is calculated using partial analysis whereas economic feasibility is calculated by evaluating the break even point and R/C ratio. The results showed that Inpara 6 with legowo planting system with insertion yield the largest profit Rp 15.096.600,-/ha with R/C ratio of 2.92.

Efficiency of Production Factors use of Corn Farming in Type C Tidal Land, Banyuasin Regency Yudhi Zuriah Wirya Purba; Agoes Thony Ak; Faizal Daud
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 9 No. 1 (2020): JLSO
Publisher : Research Center for Sub-optimal Lands (PUR-PLSO), Universitas Sriwijaya

Purba YZW, Thony Ak A, Daud F. 2020. Efficiency of production factors use of corn farming in type C tidal land, Banyuasin Regency. Journal of Suboptimal Lands 9(1): 89-101.The purpose of this study were to analyze the production factors affecting corn farming, the efficiency and elasticity of the use of production factors in corn farming. This research was conducted in Mulia Sari Village, Tanjung Lago District, Banyuasin Regency. A random sample of 30 corn farmers from 320 populations was employed in this research. The results showed factors that had a significant positive effect on corn production were the urea fertilizer and SP-36 fertilizer, while the factor of herbicides had a negative effect, and factors of labor, KCl fertilizer, insecticide and ZPT had no significant effect, labor and growth regulator were technically inefficient, while the urea, SP-36, KCl fertilizers, and insecticides were technically efficient. Overall, the use of production factors in corn farming was technically efficient in term of economy and price with the elasticity value by 0.925.

Community Based Peat Conservation Arman Manalu
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 9 No. 1 (2020): JLSO
Publisher : Research Center for Sub-optimal Lands (PUR-PLSO), Universitas Sriwijaya

Manalu A. 2020. Community based peat conservation. Jurnal Lahan Suboptimal: Journal of Suboptimal Lands 9(1): 11-22.Peat forms naturally in swamp areas when dead plants rot and accumulate, which then decompresses and accumulates within hundreds to thousands of years. Peat can store 20 times more carbon than mineral soil. Indonesia's peatlands store about 46 Gt of carbon or around 8-14% of world peat carbon (Maltby and Immirizi, 1993). Peat has an important ecosystem that acts as a protector of the Earth's atmosphere from the greenhouse effect, ecological buffer, saves biodiversity and a place to live for various flora and fauna. Peat have the ability to resemble sponges which make them suitable as water catchment areas. The purpose of this study is to provide an overview of the importance of protecting and maintaining peatlands as protectors of the Earth's atmosphere, controlling global climate by involving the community. This research was conducted with qualitative descriptive methods taken from various literature and national media. The results showed that land degradation has occurred due to the extensive conversion of peatlands into plantations which in the process of causing environmental damage and peat ecosystems in various regions of Indonesia. For this reason, community-based peat conservation needs to be done so that sustainability is maintained and the community gets economic benefits from peatlands.

Vegetation Types, Climatic Conditions and Trigona sp. Honey Quality in Onewila Village, Ranomeeto District South Konawe Regency Aminuddin Mane Kandari; Zakiah Uslinawaty; Muh. Ilton
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 9 No. 1 (2020): JLSO
Publisher : Research Center for Sub-optimal Lands (PUR-PLSO), Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33230/JLSO.9.1.2020.468

Kandari AM, Uslinawaty Z, Ilton M. 2020. Vegetation types, climatic conditions and Trigona sp. honey quality in Onewila Village, Ranomeeto district South Konawe Regency. Jurnal Lahan Suboptimal: Journal of Suboptimal Lands 9(1):57-63.Forests in Indonesia have considerable potential because besides being used in the form of wood for various purposes, it also has the potential of non-timber products that can be used for various things, one of which is as a vegetation for honey bees, especially bees Trigona sp.This study aims to identification of vegetation types, climatic conditions and honey quality of Trigona sp. in the Onewila village, Ranomeeto District South Konawe Regency. The observed variables were vegetation, temperature, rainfall, and honey quality based on SNI 2013 standards. The results found the vegetation types at the cultivation location was Caliandra (Caliandra calothyrsus =10), coconut (Cocos nucifera = 12), teak (Tectona grandis= 20), peat (Syzygium polycephalum Merr = 7), mango (Mangifera indica =5), langsat (Lansium domesticum =15), kedondong (Spondias dulcis =3), guava (Psidium guajava =4), areca (Areca catechu = 10), coffee (Coffea Arabica = 15), cashew nut (Anacardium occidentale =15), areca nut (Areca catechu), coffee (Coffea arabica), cashew nut (Spondias dulcis), Cashew nut (Anacardium occidentale = 15), Sirsak ((Annona muricata = 2), and asoka flowers (Saraca asoka= 5). The air temperature and rainfall conditions in the location is very supportive of Trigona cultivation because the average of air temperature ranges from 29oC, and the average monthly rainfall at Ranomeeto station is highest in January (135 mm) and lowest in August (16.8 mm). The honey quality of Trigona sp, from several variables such as water content, acidity, HMF levels, and reducing sugar levels are 16.98%, 33.94 mg/kg, 17.3 mg/kg, 69.31 % b/b. This means that the honey quality of Trigona sp found in Onewila village meets the Indonesian National Standard (SNI 01-3545-2013 2013).

Farmer Mentoring in Determining Fertilization Dosage of Corn Plants (Zea Mays L.) Using Soil Test Equipment Johanes Amirrullah; Yanter Hutapea; NPS Ratmini; Agung Prabowo
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 9 No. 1 (2020): JLSO
Publisher : Research Center for Sub-optimal Lands (PUR-PLSO), Universitas Sriwijaya

Amirrullah J, Hutapea Y, Ratmini NPS, Prabowo A. 2020. Farmer mentoring in determining fertilization dosage of corn plants (Zea mays L.) using soil test equipment. Jurnal Lahan Suboptimal: Journal of Suboptimal Lands 9(1): 102-108.Balanced fertilization is very important to do in marginal soils. The constraints in the use of marginal soils are physical, chemical and biological soil characteristics which do not support planting growth. Determination of fertilizer dosage for corn commodity in one region can be different depending on the available nutrient content that testing needs to be carried out. This study aimed to mentor farmers in taking appropriate soil samples and determined fertilizer doses according to location specifications and application of fertilizers on target using the Dry Soil Test Kit (Perangkat Uji Tanah Kering). This activity was carried out in Fajar Jaya Village, Ogan Komering Ulu District in February 2019.Â The results of the soil analysis of the location used as a demonstration plot derived from the results of low soil fertility analysis with soil acidity at pH 4-5 with acid crystals, moderate P, K and C-organic nutrients were relatively low. The recommended fertilizer is as follows: urea 325 kg/ha given 3 times, one-third the dose, carried out 1 MST, 4 MST and 6 MST; TSP 200 kg/ha; KCl 125 kg/ha; 5,000 kg/ha of compost and 1,000 kg/ha of lime stocked during tillage 1 week before planting. Fertilization application method applied by farmers is not in accordance with the recommendations; consequently, it is necessary to fertilize to increase nutrient content.

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Sabri Sudirman

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sabrisudirman@unsri.ac.id

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Kab. ogan ilir,

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