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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
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Search results for , issue "Vol. 11 No. 1 (2022): JLSO" : 12 Documents clear
Metabolism and Transport of P Nutrient in the Rhizosphere Zone in Acidic Soils Niluh Putu Sri Ratmini
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 11 No. 1 (2022): JLSO
Publisher : Research Center for Sub-optimal Lands (PUR-PLSO), Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jlso.11.1.2022.456

Abstract

Acidic soils are characterized by low soil pH and high solubility of iron and aluminum affecting the availability of P to be low. The P concentration in the soil solution around the rhizosphere will be influenced by the presence and metabolism of plant roots. Plants get P in the form of inorganic phosphate anion (Pi) from soil solution.  Exudate will affect the activity of microorganisms in rhizosphere and rhizoplan. This paper aimed to review the factors that affect P metabolism in the rhizosphere region. Some of the factors that influence the P metabolism in the rhizophir region are pH, root exudates, microorganisms, temperature, and humidity. Nutrient transformation in the rhizosphere was very narrow. Several things affecting the P transformation include temperature, humidity regime, oxygen, pH and ion availability, sunlight, and CO2. In the soil deficient in P, the plant roots undergo adaptation through changes in root morphology. The P availability in acid soils can be increased by the integration of plants with phosphate solubilizing bacteria or fungi. It is hoped that an understanding of P metabolism in the rhizosphere can determine a more efficient P management effort.
The Activity of Long-tailed Macaque (Macaca fascicularis) at Plantation Forest in Ogan Komering Ilir Regency, South Sumatera Tiara Wulandari; Arum Setiawan; Pandu Sapta Nugraha
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 11 No. 1 (2022): JLSO
Publisher : Research Center for Sub-optimal Lands (PUR-PLSO), Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jlso.11.1.2022.473

Abstract

Long-tailed macaque (Macaca fascicularis) is a quite adaptive animal so it could be found in a diverse range of habitat types, one of the habitats is Plantation Forest on peatlands. This study aims to obtain the information about the activity of long-tailed macaque related to habitat utilization at Plantation The operational activities in the Plantation Forest can affect the activities of long-tailed macaque, changing of food sources, and they have a potential to attack the Acacia plants, so it’s necessary to do research about the activity of long-tailed macaque related to the habitat utilization at Plantation Forest and to acknowledge the types of plants used by long-tailed macaque for food and shelter. This research is a descriptive study and the data are obtained through a focal animal sampling method in April and May 2019 at the Plantation Forest in Sungai Penyabungan District, Ogan Komering Ilir Regency. The focal animal sampling method used at 7.00-17.00 WIB with using interval of 10 minutes. Based on the study, the long-tailed macaque used the active time to feed (24.60%), rest (25.58%), move (27.92%), and social activities (21.89%) included vocalization, agonistic, and grooming. The vegetation parts consumed by the long-tailed macaque are leaves (42.30%), fruits (34.62%), and flowers (23.08%). The vegetation used as food is Acacia crassicarpa, Melaleuca cajuputi, and Melastoma malabathricum. The plant that’s most often used as food and shelter is Acacia crassicarpa.
Risk Factor Analysis for Dermatitis Due to Work in Rubber Plantation Farmers Heru Listiono; Muhammad Romadhon; Siti Aisyah
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 11 No. 1 (2022): JLSO
Publisher : Research Center for Sub-optimal Lands (PUR-PLSO), Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jlso.11.1.2022.501

Abstract

Occupational contact dermatitis is a skin disorder that is often found in rubber plantation farmers. Exposure to chemicals in the process of rubber clumping can cause contact dermatitis, resulting in irritation and other skin disorders in the form of itching, dry and cracked skin. Occupational contact dermatitis is affected by contact duration, personal hygiene, work history, use of personal protective equipment, history of previous skin diseases and years of service. The purpose of this study was to determine the risk factors for the incidence of dermatitis due to work in rubber tapping farmers on wetland rubber plantations. This research is an analytic survey with cross sectional research design, the study was conducted in January 2020 in the Region of East Buay Madang District, Regency of East OKU, South Sumatra, the study sample numbered 73 respondents, through simple random sampling. Data analysis using univariate analysis (proportion), bivariate (chi square test) and multivariate (logistic regression). The results of the analysis show that contact duration (p= 0.013), personal hygiene (p= 0.011), work history (p= 0.001) and the use of Personal Protective Equipment (p= 0.001) have a significant relationship with the incidence of occupational dermatitis, while a history of previous skin diseases (p= 0.097) and years of service (p= 0.95) do not have a significant relationship to the incidence of occupational dermatitis and variable use of Personal Protective Equipment (PPE) is the most dominant variable in causing dermatitis due to work. The results of the analysis found that the variable use of Personal Protective Equipment (PPE) is the most dominant variable in causing dermatitis due to work.
Repellent Potency of N-Hexane Extract Leaf and Stem Ocimum basilicum against Culex quinquefasciatus Indri Ramayanti; Miranti Dwi Hartanti; Reynaldi Aulia Rahman
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 11 No. 1 (2022): JLSO
Publisher : Research Center for Sub-optimal Lands (PUR-PLSO), Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jlso.11.1.2022.514

Abstract

The Culex quinquefasciatus mosquito is the main vector of filariasis, various ways to control vector breeding is the use of insecticide from natural ingredients, one of which is basil containing essential oils and proven is effective as a repellent against the mosquito. The objective of this research was to determine the repellent potency of n-hexane extract of basil leaves and stems against the Culex quinquefasciatus. This study was a laboratory experimental study using a completely randomized design, with 3 replications at 7 times intervals. The extract concentrations were 15%, 25%, 35 % and ethanol negative control 96%, the positive control repellent X containing 13% DEET. The results showed that the n-hexane extracts of basil leaves and stems for 6 hours at all concentrations were able to repel mosquitoes up to 92.51%, the one-way ANOVA analysis showed that the value of p= 0.000 (< 0.05), meaning that there was a difference in the number of C. quinquefasciatus perching on the black cloth at various concentrations of n-hexane extracts of leaves and stems of basil, while the probit analysis showed that the effective extract concentration at 90% was 31.52%. The extract of n-hexane leaves and basil stems was effective as a repellent against the C. quinquefasciatus.
Quality Assessment of Silver Arabic Chicken Eggs with the Addition of Chitosan in Rations Eli Sahara; S Sandi; F Yosi; R Nanda
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 11 No. 1 (2022): JLSO
Publisher : Research Center for Sub-optimal Lands (PUR-PLSO), Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jlso.11.1.2022.544

Abstract

The quality of chicken eggs is greatly influenced by the nutrient ration consumed. Egg quality can be observed from the external and internal eggs. The ration directly affects the external and internal quality of the eggs. The research objective was to analyze the effect of chitosan addition in the ration on the internal quality of chicken eggs. The study used a completely randomized design (CRD) with 6 treatments and 5 replications, each replication consisting of 2 Silver Arabic Chickens aged 4.5 months. The study was conducted for 7 weeks. The treatments given were: R0 (control ration without chitosan), R1 (ration + chitosan 0.5%), R2 (ration + chitosan 1%), R3 (ration + chitosan 1.5%), R4 (ration + chitosan 2%), R5 (ration + chitosan 2.5%). The parameters were measured in haugh units, albumen index, albumen and yolk weight. The results demonstrate that the addition of chitosan in the ration showed the same results (P > 0.05) on the haugh unit value, albumen index, albumen and yolk weight. The conclusion of this study indicates that the provision of chitosan in the ration has not had an effect on the internal quality of the Silver Arabic Chickens eggs.
Main and Ratooned Rice Pest Populations in Lowland Rice Fields, South Sumatra Applied Bioinsecticide from Entomopathogens Lina Budiarti; Siti Herlinda; Suwandi Suwandi; Khodijah Khodijah
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 11 No. 1 (2022): JLSO
Publisher : Research Center for Sub-optimal Lands (PUR-PLSO), Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jlso.11.1.2022.550

Abstract

The pests that attack each plant phase also varies. The aimed of this study was to compare the main population of rice insect pests and ratooned in lowland rice field in the vegetative, flowering and milk ripening phase. The main bioinsecticide rice sprayed on rice canopy were comes from the entomopathogenic fungal conidia Metarhizium anisopliae, the entomopathogenic bacterium Bacillus thuringiensis, and as a control area without the application of bioinsecticide or synthetic insecticide. The results showed that population of fake white pests (Cnaphalocrosis medinalis) and white leafhoppers pest (Covana spectra) were more prevalent in vegetative phase rice compared to other types of pests such as green leafhoppers (Nephotettix spp.), Brown leafhoppers (Nilaparvata lugens), zig zag leafhoppers. (Recillia dorsalis), white-back leafhoppers (Sogatella furcifera), grasshoppers, mole cricket (Gryllotalpa gryllotalpa), and yellow rice stem borer (Scirpophaga incertulas). The Leptocorisa acuta and green ladybugs (Nezara viridula) began to attack the flowering and milk ripening phase, which was when the rice was aged about 54-68 days after transplanting (dat). Whereas in ratooned rice, the pest population of L. acuta has appeared on the first observation on rice aged 9 days after harvest (dah) until the ratooned rice was aged 58 days after harvesting. The population of pests was higher in land without bioinsecticide application compared to land applied of bioinsecticides. In ratooned rice, the pest population between the land applied with bioinsecticide M. anisopliae and B. thuringiensis was not significantly different from the land applied by B. thuringiensis which was sold in the market.
Increasing Paddy Productivity in Tidal Low Lands of South Sumatra through the Implementation of New Superior Varieties and Amator Yeni Eliza Maryana; Agus Suprihatin; Budi Raharjo; Niluh Putu Sri Ratmini
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 11 No. 1 (2022): JLSO
Publisher : Research Center for Sub-optimal Lands (PUR-PLSO), Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jlso.11.1.2022.557

Abstract

Efforts to increase the productivity of lowland paddy in tidal low land can be conducted through improving planting methods and the use of new superior varieties (NSV). This study aimed to find out the effect of using Amator on the cultivation of new high yielding varieties (NSV) in tidal paddy fields. This study used a Split Plot design, with the main plots namely planting equipment: using Amator and Sonor, and as subplots using NSV paddy: Hipa-18, Hipa-20, Hipa-21, and Inpari 22, with 3 replications. The results showed that the average productivity of NSV paddy using Amator was 5.2 t/ha, while that of Sonor reached 6.5 t/ha. Hybrid varieties (Hipa 18, Hipa 20, Hipa 21) grown using Amator produced taller paddy plants, more tillers and longer panicles than the inbred variety (Inpari 22) grown with Sonor. The productivity of the four NSV paddy tested gave a fairly high GDH (Grain Dry Harvest) yield of 5.6 – 6.2 t/ha.
Factors Affecting Broiler Breeders Following the Partnership Pattern in Gelumbang Subdistrict, Muara Enim District (An Anthropological Sociological Approach) Acip Rakhmat; Sriati Sriati; M Yamin
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 11 No. 1 (2022): JLSO
Publisher : Research Center for Sub-optimal Lands (PUR-PLSO), Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jlso.11.1.2022.558

Abstract

The partnership pattern is one of the choices of business patterns faced by boiler breeders. This study aimed to describe and analyze the factors influencing the breeders to decide to follow the partnership pattern, calculate and compare the income of broiler farming business through partnership and independent patterns and analyze the perceptions of broiler breeders on the pattern to be applied to the next business cycle. The method used in this research was a survey method and stratified random sampling. The results of the study showed that the factors of venture capital, skills, result marketing and risk of loss, the marketing factor of the results were the most significant factors affecting the decision of farmers to follow the partnership pattern. It was found that the partnership pattern provided an average profit of Rp. 40,138,384.88 higher than the independent business pattern which was only Rp. 33,029,505.00 in one production period. When viewed in terms of Return Cost Ratio (R/C), livestock business through a partnership pattern was 1.19, lower than the R/C independent livestock business with a value of 1.20. Meanwhile, for the Food Conversion Ratio (FCR), both partnership and independent livestock businesses had the same value, namely 1.26. When viewed from the performance index, the livestock business through the partnership pattern had an IP of 4.25 greater in value when compared to the independent business pattern which was only 4.19. The breeders following the partnership pattern tended to decide to continue to follow the partnership pattern even though they had sufficient capital and skills, afforded to market their products independently, and faced their own risks. Keywords: breeders perception, partnership pattern, determinants of decision makers
Growth of Pakcoy (Brassica rapa L.) Hydroponic System Using Nutrients of Catfish Cultivation Waste Fitra Gustiar; Munandar Munandar; M Amar; Arsi Arsi; Puspa A Pitayati; Tri O Amanah; Nadiya Assyfa
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 11 No. 1 (2022): JLSO
Publisher : Research Center for Sub-optimal Lands (PUR-PLSO), Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jlso.11.1.2022.560

Abstract

Organic hydroponic cultivation systems require substitute nutrients other than inorganic fertilizers as a source of plant nutrients. Catfish cultivation waste is one of the potentials that can be used as hydroponic nutrients. This study aimed to find out the concentration of Liquid Organic Fertilizer (LOF) from fish cultivation waste as a substitute for commercial inorganic nutrients on the growth of pakcoy (Brassica rapa L.). This research was carried out in 2 stages, namely the manufacture of LOF from catfish culture waste and experiments using LOF as hydroponic nutrients. The results of this study showed that the increase in LOF nutrient content in anaerobic fermentation was higher than in aerobic fermentation. The use of LOF as a hydroponic nutrient, based on the parameters of plant height, number of leaves, SPAD value, root weight, crown weight, and dry weight obtained a smaller value that was significantly different compared to the inorganic nutrient treatment of AB mix. LOF concentration of 20%, both fermented aerobically and anaerobically, gave better growth when compared to higher concentration treatments. The nutrient content in LOF is difficult to adjust to the needs of hydroponic pakcoy, so that it will have a toxic impact on macro nutrients on the other hand, it also provides a response to micro nutrient deficiency.
Potential to Increase Production and Income of Farmers of Freshwater Swamp Riceland in Gandus District, Palembang Regency Yusni Novayanti; M Yamin
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 11 No. 1 (2022): JLSO
Publisher : Research Center for Sub-optimal Lands (PUR-PLSO), Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jlso.11.1.2022.562

Abstract

Gandus District, Palembang Regency has 1,017.255 hectares of rice fields, most of which are spread in Pulokerto Village, which was a rice field with a freshwater swamp  typology. Statistical data shows that rice productivity in Palembang Regency (4.4 tons/ha) was still low when compared to South Sumatra Province rice productivity (4.89 tons/ha) and national rice productivity (5.13 tons/ha). The writing of this article aimed to provide an overview of the potential for increasing the production and income of farmers in Gandus District, Palembang Regency. The potential for increased production can be analyzed by considering the productivity gap between rice productivity in Palembang Regency,  provincial and national rice productivity, with intensification to increase productivity and increasing planting intensity to increase planted area. Agricultural intensification can be done through the use of superior seeds, proper fertilization, control of plant pests and diseases, and counseling to convey innovation and technology. Meanwhile, increasing cropping intensity by improving the irrigation system. With the increase in productivity and planting intensity, it can contribute to increasing the income and welfare of farmers in Pulokerto Village, Gandus District, Palembang Regency.

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