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Jurnal Lahan Suboptimal
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.
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Articles 12 Documents
 1   2 
Search results for , issue "Vol. 12 No. 2 (2023): JLSO" : 12 Documents clear
Growth and Yield of Green Eggplant Applied to Various Compositions of Growing Media Sheila Izdihar Hendra Putri; Maria Fitriana
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 12 No. 2 (2023): JLSO
Publisher : Research Center for Suboptimal Lands (PUR-PLSO), Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jlso.12.2.2023.584

Abstract

Green eggplant was a vegetable which used for cooking ingredients and has rich nutrients. To increase the green eggplant productivity, it was necessary to improve the quality of growing media so the plant nutrition will be fulfilled. This study aimed to find out the best composition of growing media for the growth and yield of green eggplant. It used a Randomized Block Design (RBD) with 10 treatments for the composition of the growing media. The results of the analysis of diversity showed that the application of rice husk charcoal and chicken manure had a very significant effect on plant height, number of leaves, stem diameter, flowering age, harvest age, number of fruits per plant, fruit length, fruit diameter, and total fruit weight per plant. The results of the orthogonal contrast test showed that the green eggplant grown on soil media was very significantly different from the green eggplant grown on other growing media in all variables. The best results were obtained from the treatment of rice husk charcoal: chicken manure: soil (2:1:1) on the variables of plant height was 42.26 cm, flowering age was 22.33 days, total fruit weight per plant was 538.44 g, fruit diameter was 38.16 mm, and average weight per fruit was 81.66 g. The treatment of growing media composition using a combination of chicken manure and rice husk charcoal was better than the growing media with just one organic matter.
Technical Efficiency Analysis of Cassava Farmers on Suboptimal Dry Land Sri Ratna Triyasari; Moh. Wahyudi Priyanto
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 12 No. 2 (2023): JLSO
Publisher : Research Center for Suboptimal Lands (PUR-PLSO), Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jlso.12.2.2023.626

Abstract

The government launched a food diversification program, one of which was cassava so that the population does not depend on rice, and anticipates when rice production decreases due to crop failure. However, cassava production was much lower than rice. There were efforts to utilize suboptimal land to increase cassava suplly for population consumption. Therefore, this study aimed to assess the level of technical efficiency of cassava farming on suboptimal dry land. The research sample of 60 cassava farmers in Jaddih Village, Bangkalan Regency was taken by census to answer the research objectives. Stochastic frontier analysis was used to determine the effect of agricultural inputs consisting of land, seeds, labor, costs, and manure on the production of cassava. Then to determine the effect of age, experience, formal education, non-formal education, and family dependents on cassava insufficiency. The results show that cassava production will increase with the increase in land area, but will decrease with the increase in seedlings. The average technical efficiency of cassava was 87%, where this value will increase if farmers attend non-formal education. This research contributes to policy makers to optimize suboptimal land use, and to farmers to take advantage of production inputs and socio-economic variables that affect production increases and technical efficiency.
Verticulture of Lettuce (Lactuca sativa L.) in the Growick Irrigation System with Various Wick Widths Mellisa Mellisa; Ismed Inonu; Herry Marta Saputra
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 12 No. 2 (2023): JLSO
Publisher : Research Center for Suboptimal Lands (PUR-PLSO), Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jlso.12.2.2023.628

Abstract

The growick irrigation system is an underground irrigation that can prevent plant water loss because it directly wets the root area. The use of the width of the wick in the growick irrigation system is can meet the water needs of the growing media. The aimed of this study were to determine the effect of wick width using the growick irrigation system on the growth and yield of lettuce grown vertically. This research was conducted from April to May 2021. The research location was in the Experimental and Research Station, Faculty of Agriculture, Fisheries, and Biology, University of Bangka Belitung. The study was conducted using a randomized block design experimental method (RBD) which consisted of 5 levels of treatment. The treatment consisted of control, wick width 0.5, 1, 1.5, 2 cm.  The result shows that width of the wick of the growick and verticulture irrigation systems affected the crop water consumption but had no significant effect on the growth parameters and yield of lettuce. The treatment of 0,5 cm wick width tends to be better in supporting the growth and yield of lettuce in the vertical cultivation systems.
Pakcoy's (Brassica rapa L.) Response to the Provision of Liquid Organic Fertilizer in Polybags Budiyati Ichwan; Irianto Irianto; Eliyanti Eliyanti; Mapegau Mapegau; Zulkarnain Zulkarnain; Ikhbal Ikhbal
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 12 No. 2 (2023): JLSO
Publisher : Research Center for Suboptimal Lands (PUR-PLSO), Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jlso.12.2.2023.631

Abstract

This study aimed to examine the effect of Liquid Organic Fertilizer (LOF) in increasing the growth and yield of pakcoy, as well as obtaining LOF concentrations that provided the best growth and yields of pakcoy plants. It was conducted at the Teaching and Research Farm, Faculty of Agriculture, University of Jambi, 35 asl. The study used a Randomized Block Design with one factor, namely various LOF concentrations: 0ml/l; 5ml/l; 10ml/l, 15ml/l. Each treatment was repeated five times. The results showed that LOF application was able to increase the growth and yield of pakcoy plants in the form of plant height (4.94%–24.49%), number of leaves (4.63%–9.26%), leaf area (18.17%–46.12%), dry weight (50.98%–94.90%), and plant fresh weight (50.46%–102.60%). The LOF concentration of 10ml/l provided the best pakcoy growth and yield. The results of this study have just been able to produce a fresh weight of pakcoy 26%–33% of the potential pakcoy yield.
Growth and Yield of Indoor-Cultivated Mustard Microgreens against the Duration of LED Irradiation and Variations in Planting Media Tri Putri Nur; Nuni Gofar
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 12 No. 2 (2023): JLSO
Publisher : Research Center for Suboptimal Lands (PUR-PLSO), Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jlso.12.2.2023.636

Abstract

The limitations of agricultural land currently encourage cultivation activities to be carried out with the use of limited space such as indoor cultivation by utilizing irradiation techniques and the use of varied planting media. This study aimed to evaluate the  growth and yield of  indoor-cultivated mustard microgreens to the irradiation duration and the composition of varied planting media. This study used a split plot design with the treatment of LED irradiation duration of 0, 10, and 20 hours/day, and the variations  of planting media, 100% soil, 100% compost, addition of 50% compost and cocopeat, and a combination of compost and cocopeat planting. The study results showed that the irradiation only affected the plant height in the both planting periods. The treatment of the composition of the planting media had significant effect on all variables observed in the two planting periods, while the interaction had a very significant effect on the plant height on 1st planting period and root length on 2nd planting period. The treatment of 50% soil + 50% compost on LED 10 hours/day had the highest yield of fresh weight in two planting periods. The use of 100% soil media inhibited the growth of mustard microgreens, while the irradiation of 0 hours/day in all planting media treatments showed the symptoms of etioliation. So, the treatment of 10 hours/day irradiation with the addition of 50% compost is able to provide  the best results in quality and quantity against the pH value and the growth and yield of mustard  microgreens.
Study on Water Quality of Some Tributaries in Palembang City Heni Kurniawati
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 12 No. 2 (2023): JLSO
Publisher : Research Center for Suboptimal Lands (PUR-PLSO), Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jlso.12.2.2023.638

Abstract

The results of monitoring the water quality of Sekanak, Bendung, and Ogan river  at some point have exceeded the quality standards referring Class II Water Quality Standards in accordance with Government Regulation of Indonesian Republic Number 22 of 2021. To find out the level of water pollution and water quality in the river,  it is necessary to  calculate  the water status and water quality indeks. The purpose of study was to evaluate the water quality status and water quality index of the Sekanak, Bendung and Ogan Rivers. Calculation of water quality status used the Nemerow and Sumitomo Pollution Index method with parameters pH, DO, BOD, COD, TSS, Nitrate, Phosphate, and Fecal Coli and calculation of water quality index in accordance with the Regulation of the Ministry of Environment and Forestry of the Indonesian Republic Number 27 of 2021. The highest concentration of BOD and COD were in Sekanak river at low tide with a value of 9.51 mg/l and 41.36 mg/l. The pollution index was in the range of 0.75 to 2.47 with a meeting quality standars status up to mildly pollutants. Water quality indexs at Sekanak, Bendung and Ogan river in 2020 - 2022 were in the moderate category, except at Ogan river in 2021 was in a good category. From statistical analysis there were  correlation between BOD and COD at the Sekanak, Bendung and Ogan River and the most significant parameters on the pollution index for Sekanak and Bendung River were Phosphate and for Ogan River was BOD.  
Percentage of Flower and Fruit Fall, and Red Chili Production in Ultisol Applied Biostimulants and Inorganic Fertilizers Shabilla Amartiya Sari; Nuni Gofar
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 12 No. 2 (2023): JLSO
Publisher : Research Center for Suboptimal Lands (PUR-PLSO), Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jlso.12.2.2023.639

Abstract

Ultisol has main problem of low nutrient availability causing a high percentage of flowers and fruit fall and reducing red chili production. This study aimed to find out effectiveness of biostimulants in reducing percentage of flower and fruit fall, use of inorganic fertilizer doses, and their role in increasing production red pepper in Ultisol. The method used experimental and randomized block design with 9 treatments.  The treatment used application of flush biostimulants and without watering into soil with various doses inorganic fertilizers. The fertilizer doses were 100%, 75%, and 50% based on fertilization recommendations. The study results showed that application of biostimulants combined with inorganic fertilizers of various doses had a significant effect on fruit weight/plant and red pepper production, but had an insignificant effect on the percentage of flowers and  fruits, as well as number of fruits/plant. Application of biostimulants and various doses of inorganic fertilizers tended to increase fall of flowers, number of  fruits/plant, and the percentage of fruit fall. Biostimulants combined  with  inorganic fertilizers were able to reduce fertilizer use as much as 50%.  Production of red pepper with application of biostimulants and 50% of inorganic fertilizers reached 5.36 tons/ha. The results of the economic feasibility analysis of red chili peppers were 1.69 R/C and 0.69 B/C ratio, meaning that the cultivation of red chili with application of  biostimulants was profitable and worthy of development.  So, application of  biostimulants is able to reduce fertilizers by 50% and increase production of red peppers.
Biology of Pentalonia nigronervosa and Its Efficiency as a Vector of Banana Bunchy Top Virus After Being Bred in Rat Taro (Typhonium flagelliforme) Yunanda Audri Balqis; Bambang Gunawan; Suparman SHK
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 12 No. 2 (2023): JLSO
Publisher : Research Center for Suboptimal Lands (PUR-PLSO), Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jlso.12.2.2023.642

Abstract

P. nigronervosa is an insect that acts as a vector of the Banana Bunchy Top Virus causing the affected banana  to become stunted and even fruitless. This study aimed to find out the biology of P. nigronervosa in rat taro as well as its  ability or efficiency in the transmission of BBTV disease in bananas after being treated. The study was experimenta, trying to find out the efficiency of BBTV transmission by P. nigronervosa after being transmitted to the plant of rat taro (T. flagelliforme) with  the variables of observation and  the taking of biological  data  of Pentalonia nigronervosa  in the rat taro plant, Observation of the development of BBTV disease in banana plants inoculated from the first symptoms until the typical phenomenon of bunchy top was formed. Biology of P.  nigronervosa in  rat taro. Each stage of the four color instars and The size of the nymph of P. nigronervosa changed. When entering the first brownish-white instar with a length of 0.61 to 0.69 mm, in the 2nd instar it was light brown with a length of 0.71 to 0.83 mm, then in the 3rd instar it was reddish brown with an average length of 0.87 mm, and in the 4th instar  it was blackish brown with an average body length of 1.31 mm. The imago color was still blackish brown, and in this phase it usually had wings, but in the treatment of the imago rat taro plant, it had no wings, and the average body length was 1.43 mm. In the field tests, the rat taro plants could not inhibit the spread of BBTV disease but could be an alternative host for P. nigronervosa ticks.
Diversity of Plant Visiting Insects of Intercrop Lantana camara in Oil Palm Plantation Rizki Putri Amelia; Chandra Irsan
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 12 No. 2 (2023): JLSO
Publisher : Research Center for Suboptimal Lands (PUR-PLSO), Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jlso.12.2.2023.643

Abstract

Refugia plant flowers can be a support for biological pest control applications. Insects are visitors to flowering plants, especially the Lantana camara plant, which is interesting to study. This study aimed to determine the diversity of insects that visit flower plants planted among oil palm plants. This study used the Scan Sampling method or direct observation. Insects found in L. camara plants were collected and identified. The results showed that there were 11 species belonging to 11 families and 7 orders. The index value of the diversity of attack species from L. camara flower plants was low. Which means L. camara flowers are not attractive to insects. The species evenness index and dominance index ranged from 0.31-0.60 which means moderate dominance. The dominant insect found in L. camara flowers is Bothrogonia addita. In L. camara flower plants planted among oil palm plants, 11 species of arthropods belonging to 11 families and 7 orders were found. The 11 species are O. salticus, A. coquebertii, B. tabaci, B. addita, Componotus sp., H. itama, A. violae, C. gemmatus, I. elegans, A. crenulate, L. marginicollis. Insects that came to L. camara flowers in the morning were more than those that came in the afternoon with a successive number of 11 species, 268 individuals and 9 species, 141 individuals. The dominant insect found in L. camara flowers is B. addita.
Revegetation of Tropical Peat Swamp Forest of Former Fires Using Local Tree Species in South Sumatra (Indonesia) Bastoni Bastoni; Raissa Anjani; Andika Imanullah
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 12 No. 2 (2023): JLSO
Publisher : Research Center for Suboptimal Lands (PUR-PLSO), Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jlso.12.2.2023.645

Abstract

Revegetation of tropical peat swamp forests (PSF) from former fires with local tree species has strategic value for the recovery of PSF, which has been largely lost and severely degraded by logging, conversion, drainage, and repetitive fires. The PSF recovery will be followed by increased forest cover, CO2 sequestration, O2 production, and peat ecosystem biodiversity. The method of revegetation that guarantees successful planting is still very lacking and has not been widely publicized. The study aimed to analyze the growth of revegetated plants on PSF of former fires. It used a field experiment design with four types of local peat plants, namely ramin (Gonystylus bancanus), punak (Tetramerista glabra), tembesu (Fragraea fragrans), and pulai (Alstonia pneumatophora). The results of the study showed that until the age of 2 years, the survival rate of revegetated plants ranged from 92.56%–94.69%, with growth of 32.53–44.94 cm/year and diameter growth of 0.87–1.21 cm/year. The growth of revegetated plants still accelerated in observations until the age of 3 years. This study provides optimism that PSF revegetation degraded by the fires could be carried out with satisfactory results.

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