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Jurnal Lahan Suboptimal

jlso
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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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Pemanfaatan Refugia dalam Meningkatkan Produksi Tanaman Padi Berbasis Kearifan Lokal Icuk Muhammad Sakir; Desinta Desinta
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 7 No. 1 (2018): JLSO
Publisher : Research Center for Sub-optimal Lands (PUR-PLSO), Universitas Sriwijaya

Sakir et al, 2018.Â Utilization of Refugia to Increase Rice Production Based on Local Wisdom. JLSO 7(1):97-105.Â The purpose of this study was to determine the utilization of refugia as a natural enemy of rice pest organisms in order to increase rice production sustainably. The study was conducted on a 3-hectare plot of land in Pemulutan Ulu Village, Pemulutan District, Ogan Ilir Regency, South Sumatra. The types of refugia that were used: sunflowers (Helianthus annuus), sesame (Sesamum indicum), zinnia flowers (Zinnia sp), yellow rayÂ flower (Cosmos caudatus) and marigold flower (Tagetes sp). The exploratory method was used with a cross sectional approach to analyze the intensity of the existence of natural enemies and rice pest disruptors, thus correlating with rice production. Observations were carried out for 18 weeks at 3 points with an area of 3 hectares. The rice varieties were used Ciherang (points A and C) and IR 42 (point B). The results showed an intensity of abundance of natural enemies or predators as many as 378 while the intensity of pests was 54 animals. The yield of rice was 8 tons/hectare,Â 8.3 tons/hectare and C is 8.1 tons/hectare for point A, B and C respectively. Utilization of refugia in rice plants was able to increase rice production by 15.1%.

Emisi Karbon Lahan Gambut pada Agroekosistem Kelapa Sawit M. B. Prayitno; Sabaruddin Sabaruddin; D. Setyawan; Yakup Yakup
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 3 No. 1 (2014)
Publisher : Research Center for Sub-optimal Lands (PUR-PLSO), Universitas Sriwijaya

Carbon emissions is one of the activities of agroecosystem impacts of oil palm on peat land as a result of the making drainage and plant growth. This research was conducted in the area of oil palm agroecosystem on peat land landscape, Ogan Komering Ilir District, South Sumatra with the aim of estimating reserves and carbon emissions on the land. Contribution of carbon emissions on the land with plant age 5, 3 and 2 years without drainage channels are respectively 12.027; 11.262 and 9.783 tons CO2/year, as well as plants age of 5 years with the drainage channel is 14.723 tons of CO2/year. Contribution of carbon emissions from the making drainage channel reaches 2,696 tons of CO2/ha/year and greater than the contribution of carbon emissions from the aging plant palm oil annually, amounting to 0.383 to 1.479 tons of CO2/ha/year.

Respon Penambahan Pupuk Hayati terhadap Pertumbuhan dan Hasil Padi Sawah Jumakir Jumakir; Endrizal Endrizal
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 8 No. 2 (2019): JLSO
Publisher : Research Center for Sub-optimal Lands (PUR-PLSO), Universitas Sriwijaya

Jumakir J, Endrizal E. 2019.Â Response of biological fertilizer addition to growth and results of rice field.Â Jurnal Lahan Suboptimal: Journal of Suboptimal Lands. 8(2):173-180.Â The research objectives were to determine the effect or response of the addition of biological fertilizers to the growth and yield of rice, to determine the most effective type of biological fertilizer. This study was conducted in irrigated rice field of Sri Agung Village, Batang Asam sub District, West Tanjung Jabung District, Jambi Province in dry season 2016. The design was Randomized Block Design (RBD) with six treatments and three replications with 5 mx 10 m plot area, implemented in a farmer area of 1200 m2. The results of the analysis based on the analysis of variance showed significant and unreal differences in growth and yield of rice. The addition of biological fertilizer provided higher growth and yields than without biological fertilizer. Provibio biofertilizer is the most effective biofertilizer that can provide the highest rice yield and the use of biofertilizer can save 50% recommended NPK fertilizer.

Keanekaragaman Vegetasi Rawa di Kecamatan Tanjung Lago Siti Indah Oktaviani; Didi Jaya Santri; Endang Dayat
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 4 No. 2 (2015): JLSO
Publisher : Research Center for Sub-optimal Lands (PUR-PLSO), Universitas Sriwijaya

The study aims to determine the diversity of vegetation swamp ecosystems in the district of Tanjung Lago. The study was conducted from June to July 2011. Methods of analysis using squares method, quantitative data analysis conducted on the value of density, dominance, frequency, importance and diversity index of each type of plant. The results showed that the vegetation consists of 16 genuses and 21 species dominated by Pteridophyta and Spermatophyta. vegetation diversity value of (2.0680), the higher the number, the higher the index type of diversity of a kind. Such characteristics are caused by environmental influences owned as organic matter content and low pH and factors derived human intervention.

Distribusi Pendapatan Dan Kemiskinan Rumah Tangga Petani Di Wilayah Pasang Surut (Kasus Di Desa Saleh Mukti Kecamatan Air Salek Kabupaten Banyuasin Sumatera Selatan) Yanter Hutapea; Budi Raharjo
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 5 No. 2 (2016): JLSO
Publisher : Research Center for Sub-optimal Lands (PUR-PLSO), Universitas Sriwijaya

Hutapea, et al.Â Income Distribution and Farmer Household Poverty in Tidal Swamp Region (Case In Saleh Mukti Village, Air Salek Sub-District,Â Banyuasin Regencies, Southsumatra). JLSO 5(2):159-169.Â The existence of farmers in tidal swamp transmigration areas have changed compare to the initial conditions, seen in tenure, farm business management and livelihoods,thatâ€™s impact of Â population growth, agricultural expansion, availability of resources, regional growth and infrastructure development as well as acculturation.This assessment aimedtoanalyzethe income structure, distributionand farmer household poverty in tidal swamp region. Survey had done in Saleh Mukti Village, Air Salek sub District, Banyuasin Regency, South Sumatera Province at October 2014. Using Disproportionated Stratified Random Sampling methodebased onrice farminglandownershipwiththreestrata, namely: narrow, medium andlarge strata. Each staraconsists of 14, 20 and 16 farmer households.The results showed that the average size of agriculture land ownership in narrow, medium and large strata were 1.03; 1.47 and 2.63 harespectively. The average income of farmer households inÂ narrow, medium and large strata were Rp 23,360,675/year, Rp 28,973,970/year and Rp 36,158,060/year and about 18.21%, 42.40% and 34.62% get from Â the off-farm income. The distribution of those farmer household income per capita categorized on unequality with Gini coefficient Â 0.43.Household income of farmers per capita in narrow, medium and large strata were Â Rp 17,795/capita/year, Rp 30,625/capita/year andÂ Rp 26,370/capita/year respectively. The percentageof poorhouseholdsin narrow, medium and largestrata were85.71%; 70% and75% respectively.Althoughpovertycan not becompletelyeliminated, butat leastthere areeffortsthat can be usedtoovercome it with community empowerment through: humanempowerment, businessempowermentandenvironment/infrastructure empowerment.

Suitability of Tidal Swamp for Rubber Plantation in Three Villages of Ex Rice Mega Project, Pulang Pisau Regency, Central Kalimantan Province M. A. Firmansyah; N. Yuliani; W.A. Nugroho; A. Bhermana
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 1 No. 2 (2012)
Publisher : Research Center for Sub-optimal Lands (PUR-PLSO), Universitas Sriwijaya

Firmansyah et al. 2012. Suitability of Tidal Swamp for Rubber Plantation in Three Villages of Ex Rice Mega Project, Pulang Pisau Regency, Central Kalimantan Province. JLSO 1(2):149-157. Since 1920, tidal swamp has been widely developed for rubber plantation. Land rehabilitation of ex Mega Rice Project has attracted local community to cultivate the land for rubber plantation. The purpose of this research was to determine land suitability classification for rubber in tidal lowland areas located in three villages (Anjir Pulpis, Jabiren, and Sigi) in Pulang Pisau Regency wherein several types of soil were found, namely Sulfaquept, Endoaquepts, Dystrudept, and Haplohemist. The results indicated that there were several limiting factors to rubber plantation in tidal lowland, i.e. rooting condition, toxicity, nutrient retention, and peat land fire hazard. Actual land suitability classification felt into not suitable (N1) except Dystrudept of Jabiren which was classified as marginally suitable (S3). Improvements to overcome these limiting factors were required up to medium-high level. Low improvement level might not enhance land suitability class. Medium improvement level enhanced marginally suitable (S3) to moderately suitable (S2). Whilst, for high management level, it could enhance moderately suitable (S2) to highly suitable (S1). However, the development of tidal lowland for rubber plantation needed support from the government, especially the costly improvement of poor drainage system.

Strategi Program Pemuliaan Tanaman Kelapa Sawit (Elaeis guinensis Jacq.) pada Lahan Suboptimal di PT Binasawit Makmur Muhammad Antony Jefri Pratama; Nurcahyono Indarto; Fahmi Wendra; Victor Manotar Pademan Manalu; Agry Widya Pradipta; Bayu Lesmana; Upit Sarimana; Pratiwi Erika; Zulhermana Sembiring; Dwi Asmono
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 7 No. 1 (2018): JLSO
Publisher : Research Center for Sub-optimal Lands (PUR-PLSO), Universitas Sriwijaya

Pratama et al, 2018. Oil Palm Breeding Program Strategy for Suboptimal Area in PT Binasawit MakmurÂ . JLSO 7(1):26-36.Â Suboptimal areas have great potential to be used an alternative land for cultivation of oil palm.We needed superior oil palm material to be able to grow well on that land. PT. Binasawit Makmur (BSM) through the Breeding Unit has developed a strategy regarding the assembly of superior material oil palm drought resistant. Therefore, this research aimed to developÂ a strategy regarding breeding program in suboptimal lands of PT Binasawit Makmur.Â The strategies used were Â introducing, evaluating, and selecting genetic material based on productivity components (total and weight of fresh fruit bunches/ha, extraction rate) and high increment.Â In addition, the efforts have been made to obtain drought tolerant material are conducting a progeny trial (DXP Trial) on mature palm to obtain drought tolerant in the dried season. Based on the results of the progeny trial, both of parents were traced to a crossing program. Currently, the seeds of the crossing have been obtained to confirm the results of the research on the nursery scale. In the nursery trial, research will be conducted to measure the proline content, stomata and chlorophyll content. Selection in the mature palm DXP progeny trial was followed by application a molecular tool such as SSR and SNP. Through this approach, a superior genetic material in terms of productivity and also drought tolerance can be developed and therefore can be used for recombination and release of new varieties.

Tingkat Parasitisasi dan Deskripsi Parasitoid yang Memarasit Aphis gossypii (Glover) (Hemiptera: Aphididae) Asal Agroekosistem Dataran Rendah dan Dataran Tinggi Sumatera Selatan Riyanto Riyanto; Siti Herlinda; Abu Umayah; Chandra Irsan
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 3 No. 1 (2014)
Publisher : Research Center for Sub-optimal Lands (PUR-PLSO), Universitas Sriwijaya

The parasitic level research and description of the parasitoid species which were parasitic towards Aphis gossypii (Glover) (Hemiptera : Aphididae ) origin the agroecosystem of the lowland and highland of South Sumatra has not been reported, although this information is needed as a foundation of biological control of A. gossypii in South Sumatra. The purpose of this study was to determine the parasitic level and provide information about the description of the parasitoid which were parasitic towards A. gossypii origin the agroecosystem of the lowland and highland of South Sumatra. Survey and exploration the parasitoid which were parasitic towards A. gossypii conducted at 11 sites in South Sumatra vegetable center.Â The identification of parasitoid species was conducted in the laboratory of Entomology Department of the Faculty of Agriculture University of Sriwijaya. The results showed the parasitic level of Aphidius sp. and Diaeretiella rapae was higher during the dry season in both lowland and highland compared to the parasitic level of Aphelinus sp. However, Aphelinus sp. could only spread in the lowland. The main characteristics of Aphidius sp. (Aphidiidae) has shaped antennae filiform and segmented 13. The front wings have a triangular pterostigma. D. rapae, (Aphidiidae) has shaped antennae filiform and segmented 14. The front wings has a triangular pterostigma. The hind wing has a perfect basal cells. Aphelinus sp. (Aphelinidae) has an shaped goblets antennae and eight segmented and the last segments three of the antennae enlarged or club. Marginal venation long wings, while the venation postmarginal and stigma reduction. In addition there are two species of hyperparasitoid which were found to be parasitic towards parasitoid A. gossypii, were Ooencyrtus sp. and Aphiidencyrtus sp. (Encyrtidae) especially in the lowland.

Pertumbuhan Tanaman Lada (Pipper nigrum L.) Umur Satu Tahun pada Lahan Bekas Tambang dengan Penambahan Dosis Pupuk Hayati yang Berbeda Badriyah Badriyah; Ismed Inonu; Euis Asriani
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 8 No. 2 (2019): JLSO
Publisher : Research Center for Sub-optimal Lands (PUR-PLSO), Universitas Sriwijaya

Badriah B, Inonu I, Asriani E. 2019. Growth of one year old pepper (Pipper nigrum L.) in post tin mining land using different dosage biofertilizer. Jurnal Lahan Suboptimal: Journal of Suboptimal Lands. 8(2):117-125.Â Â Â The yield of pepper as important spice plant has been decreased due to the reduction of pepper planting area which are converted into tin mining area. One effort can be done is utilizing suboptimal lands that has low soil fertility. The aim of this research was to determine the effect of biofertilizer dosage on one year old pepper to growth in post tin mining land. This research had been conducted from February 2018 until June 2018 in post tin mining land owned by PT Timah at Dwi Makmur Village, Bangka. The research used expremental method with Completely Randomized Block Design (CRBD) with single factor. The factor was biofertilizer dosage: (0,0; 0,5; 1,0; 5,0; 10,0; and 15,0 g/L/plant). The result showed enrichment biofertilizer significantly effect on chlorophyll content and number of branch, but not significantly on plants height, number of nodes, and leaf area. The treatment dosage 10 g/L/plant (1x108 cfu) was the best inclined result growth of one year old pepper plant in post tin mining land.

Produksi Tanaman Jagung (Zea mays L.) pada Berbagai Jarak Tanam di Tanah Ultisol Ardi Asroh; Nurlaili Nurlaili; Fahrulrozi Fahrulrozi
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 4 No. 1 (2015): JLSO
Publisher : Research Center for Sub-optimal Lands (PUR-PLSO), Universitas Sriwijaya

Maize is cultivated not only as producer but also as a seed of green fodder. Increasedcorn needs according to population growth and the increasing need for animal feed, inwhich 52.4% of the feed is from cron. This study aimed to determine the effect of plantingdistance on the production of hybrid corn plants bisi-2. This study used a randomizedblock design experiment (RAK) are arranged in groups and comprise 1 to 3 treatmentfactors, namely: J1 (50 x 20 cm), J2 (50 x 40 cm), A3 (50 x 60 cm) and 5 replications.Planting the drill is done by using the spacing of the rows in each treatment, the seed isinserted into the planting hole as much as 2 seeds per hole. The results of the study givinga spacing significantly affected maize crop production parameter dry weight of plants, cobwet weight, dry weight and pith. Giving a spacing of 50 cm x 40 cm can not increase theproduction of corn. Giving a spacing of 50 cm x 60 cm gives the best effect on theproduction of corn.

Page 15 of 33 | Total Record : 323

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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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