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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.

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Search results for , issue "Vol. 7 No. 2 (2018): JLSO" : 12 Documents clear

Upaya Peningkatan Pertumbuhan dan Produksi Gambas Melalui Pengaturan Jarak Tanam dan Waktu Penyiangan di Lahan Kering Gribaldi Gribaldi; Nurlaili Nurlaili
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 7 No. 2 (2018): JLSO
Publisher : Research Center for Sub-optimal Lands (PUR-PLSO), Universitas Sriwijaya

Gribaldi et al, 2018. Increasing the Growth and Production of Oyong Through Setting the Planting Distance and Weeding Period in Dry Land. JLSO 7(2):157-163.Â Luffa acutangula (angled loofah) provide great benefits so that it is popular and consumed by the public. The increasing of L. acutangula production continues to be carried out in line with increasing market demand, one of them is through the improvement of cultivation techniques, such as fertilizer application, spacing and time for weeding. This study aimed to determine the increase in growth and production of L. acutangula plants at various planting distances and weeding time. This study used a randomized block design which was arranged through factorial with three replications. The factors studied consisted of: plant spacing (J), spacing of 40 cm x 50 cm (J1), spacing of 60 cm x 50 cm (J2), and spacing of 80 cm x 50 cm (J3). Weed weeding treatment (P) consists of: No weeding (P0), weeding at 15 DAS (days after sowing) (P1), weeding at 25 DAS (P2), weeding at 35 DAS (P3), and weed-free (P4). The results showed that the treatment of plant spacing and weeding time affected the plant growth and production. Spacing at 40 cm x 50 cm resulted in the best of plant growth and yield, and weeding at 35 DAS and weed-free plant produced the best growth and yield.

Evaluasi Kualitas Fisik dan Uji Palatabilitas Ransum Berbasis Rumput Kumpai Tembaga (Hymenachne acutigluma) Melalui Kombinasi Lumpur Sawit dan Daun Ubi Kayu Riswandi Riswandi; Basuni Hamzah; Agus Wijaya; Arfan Abrar; M. Reski Valian Akbar
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 7 No. 2 (2018): JLSO
Publisher : Research Center for Sub-optimal Lands (PUR-PLSO), Universitas Sriwijaya

Riswandi et al, 2018. Physical Quality Evaluation and Palatability of (Hymenachne acutigluma) through Combination of Palm Oil and Cassava Leaves. JLSO 7(2):204-212.Â The aim of this study to investigate the physical quality and palatability based feed Hymenachne acutigluma which is combine cassava leaves and palm oil as animal feed.Â This reseachÂ Â was done in 3 months in Cattle Nutrition and Feed Laboratory and Livestock Experiment Studies Program Faculty of Agriculture, University of Sriwijaya.Â This reseach used completely randomazed design method with 4 treatments and 4 replications.Â The treatment consisted of R0 (85% Hymenachne acutigluma + 15% concretate), R1 (55% Hymenachne acutigluma + 30% cassava leaves + 15% concrentate), R2 (55% Hymenachne acutigluma + 30% palm oil + 15% concentrate), R3 (55% Hymenachne acutigluma + 15% cassava leaves + 15% palm oil + 15% concentrate).Â The observed variabels are smell, water ration, density and palatability of feed consisted.Â The results showed thet the treatment had significant effect (P<0.05) on density of the ration and had no significant effect (P>0.05) on the smell and the water content of the feed.Â The result of the palatability rations show thet the treatment of R1 is the most favored by the livestock.Â The conclusion of this reseach is indicate that the combination 55% Hymenachne acutigluma + 30% cassava leaves + 15% concrentate can improve the physical quality and palatability.Â

Tingkat Pengetahuan, Sikap dan Perilaku Petani dalam Pengelolaan Konservasi Musuh Alami sebagai Upaya Pengendalian Tungro di Kalimantan Selatan Elisurya Ibrahim; Diah Arina Fahmi; Yayan Suryana
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 7 No. 2 (2018): JLSO
Publisher : Research Center for Sub-optimal Lands (PUR-PLSO), Universitas Sriwijaya

Ibrahim et al, 2018. Level of Knowledge, Attitude and Behavior of Farmers in Managing Conservation of Natural Enemies as Tungro Control Efforts in South Kalimantan. JLSO 7(2):121-127.Â Efforts to secure and maintain food self-sufficiency, especially rice that has been achieved by the government, need to be done. One of them is by controlling plant pests and diseases.Another effort that can be done is to utilize the potential of suboptimal land such as swamps, in addition to optimizing irrigated and rainfed rice fields.Tungro is an important disease that can be threaten rice productivity. Conservation of natural enemies as one method of tungro control needs to be studied at the farmer level. Thepurposes of this study were to examine the level of knowledge, attitudes and behavior of farmers in the conservation management of natural enemies in swamps. This research was conducted at Guntung Ujung, Banjar District South Kalimantan on August 2017.Site selection was carried out by purposive sampling because the location was one of the tungro endemic areas in 2014. The primary data were collected using interviews on 37 respondents farmers, while secondary data was obtained from relevant agencies.Data were analyzed descriptively by scoring.The results showed that the level of knowledge of farmers on the management of conservation of natural enemies belonged to the medium category (64.13%), as well as the attitude of farmers towards the management of conservation of natural enemies was grouped to the medium category (65.77%). The behavior of farmers in supporting the management of conservation of natural enemies was belonged to the medium category (53.67%).

Efektifitas Pertumbuhan Benih Betok (Anabas testudineus) Menggunakan Vitamin C dan D sebagai Suplemen Pakan Helmizuryani Helmizuryani; Meika Puspitasari; Khusnul Khotimah
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 7 No. 2 (2018): JLSO
Publisher : Research Center for Sub-optimal Lands (PUR-PLSO), Universitas Sriwijaya

Helmizuryani et al, 2018. Growth Effectivity of Climbing Perch (Anabas testudineus) Used Vitamin C and D as Feed Suplement. JLSO 7(2):164-173.Â The added of vitamin in feed is expected to increase the feed efficiency ,growth and survival of climbing perch (Anabas testudineus). This research was conducted to analysis the effectivity of vitamin supplement to increased the growth and survival of climbing perch (Anabas testudineus). The method used was an experimental method, with Completely Randomized Design (CRD), and three levels of treatment. The research carried out at Fish Hatchery Unit named Mulia on Plaju district, Palembang city. It's started from March until May 2018. The treatment used vitamin C and D gives the doses differentiation, that were V1 (doses of vitamin C 125 mg/kg feed), V2 (doses of vitamin D 375 mg/kg feed), and V3 (doses of vitamin C + D 125 mg/kg feed and 375 mg/kg feed). The growth analysis parameter was the growth of length, weight, and survival rate. The results that showed the best growth and survival of climbing perch (Anabas testudineus) were vitamin D and C, where best mass on V3 about 3,89 g. While the lowest on V1 about 2,7g. The best growth length on V3 about 4,61 cm, otherwise the weakest on V1 about 3,85 cm. The survival rate was highest on V3 about 88,33% and the lowest on V2 about 83,33%. Vitamin required for a fish body to carry out metabolism, but if overuses could be hipervitaminosis.Â

Uji Kisaran Inang Penyakit Downy Mildew (Pseudoperonospora cubensis) dan Antraknosa (Colletotrichum Sp.) pada Beberapa Tanaman Cucurbitaceae Erise Anggraini; A. Muslim; Azizah Zuriana; Chandra Irsan; Bambang Gunawan
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 7 No. 2 (2018): JLSO
Publisher : Research Center for Sub-optimal Lands (PUR-PLSO), Universitas Sriwijaya

Anggraini et al, 2018. Host-Range Analysis of Downy Mildew (Pseudoperonospora cubensis) and Anthracnose (Colletotrichum Sp.) on some Cucurbitaceae Plants. JLSO 7(2):213-224.Â Inhibiting factors of cucumber cultivation is Downy mildew disease that is caused by Pseudoperonospora cubensis and Anthracnose by Colletotrichum sp. The objective of this research was to observe pathogenicity of activity caused by Pseudoperonospora cubensis and Colletotrichum sp. isolated from cucumber towards Cucurbitaceae plants. The research was conducted at greenhouse and Phytopathology Laboratory, Department of Plant Pests and Diseases Faculty of Agriculture, University of Sriwijaya in September to December 2016. This study used Randomized Block Design (RBD), with four types of plants, 2 treatments and 4 replications. The results showed that the incubation period of the plant inoculation Downy mildew by Pseudoperonospora cubensis range between 4.5-5.0 days. Result of broadest spot area was on melon leaf 2.05 cm2 with the chlorophyll content of 0.4928 mg/g and the lowest result was on cucumber leaf 0.90 cm with the chlorophyll content of 0.7628 mg/g. While the results showed that the incubation period of the applied plant pathogen Colletotrichum sp. ranging from 3.0-4.5 days. Result of broadest spot area was on melon leaf 4.00 cm2 with the chlorophyll content of 0.3932 mg/g and the lowest result was on cucumber leaf 2.42 cm2 with the chlorophyll content of 0.7588 mg/g.

Pojale (Ketela Pohon Jagung dan Kedelai) sebagai Bahan Pengembangan Beras Analog Pengendali Kegemukan Sukamto Sukamto; Moh. Sui; Sudiyono Sudiyono; Patria Domas G.; Fatimah Karim
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 7 No. 2 (2018): JLSO
Publisher : Research Center for Sub-optimal Lands (PUR-PLSO), Universitas Sriwijaya

Sukamto et al, 2018. The Development of Analog Rice as Obesity Control from Pojale Materials (Cassava, Corn and Soybean). JLSO 7(2):128-135.Population growth can cause 2 problems, namely food shortage population and overweight and obese population. Indonesians who are overweight and obese have reached 25%. This study aimed to develop analog rice to control obesity from corn and cassava-based ingredients than contain high amylose, and soybeans as a protein source. Corn flour, cassava flour and soy flour passed the 80-mesh sieve was used in the study. The analog rice granulation process used the Twin Screw Extruder KL Protecal machine. The temperature settings for the extruder thread at the beginning, middle and end were 80, 85 and 90 Â°C, respectively. The results showed that the composition of the ingredients of corn flour, 1:1 cassava flour and without addition of soy flour yielded the best results of analog rice in terms of color, texture, structure and surface smoothness. The analog rice can be cooked for 8-10 minutes with addition of water by 1.5 times of the rice. Cooked rice contained 9.44% protein, 76.40% starch, 7.99% fiber, and 36% amylose when the formula was added with 10% soy flour. Sensory test showed that panelists was on average like the rice.

Perspektif Prospek: Potensi dan Kendala Sektor Pertanian pada Zona Sub DAS Rawas di Kabupaten Musi Rawas Utara Sumatera Selatan Chuzaimah Chuzaimah; F. Sjarkowi; E. Wildayana; Yunita Yunita
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 7 No. 2 (2018): JLSO
Publisher : Research Center for Sub-optimal Lands (PUR-PLSO), Universitas Sriwijaya

Chuzaimah et al, 2018. Prospect Perspective: Potential and Constraints of the Agricultural Sector in Rawas Sub-watershed Zone in Musi Rawas district, South Sumatra. JLSO 7(2):174-184.Land resources play a very important role in all sectors of economic development. Musi Rawas Utara District is one of 17 districts or cities in the administrative area of South Sumatra Province, which is the youngest district in the Province.This research aimed to analysis of 1) potential and 2) constraints of the agricultural sector in Rawas Sub-watershed Zone in Musi Rawas District, South Sumatra.This research was carried out in Musi Rawas Utara District. Primary data was based on questioner. Whereas secondary data was obtained from relevant agencies or institutions as well as literatures related to this paper. The results showed that there were several potentials and constraints of the agricultural sector in North Musi Rawas District. The potential that exists in terms of land use is remaining a large area of suitable land for agriculture. Land in Musi Rawas Utara District in 2014 was mostly used as a mixed plantation, which was 3,516.47 kmÂ² or reached 57.99% of the total the district area and spread throughout the sub-districts. The second widest use was 1,731.42 kmÂ² or 28.82% of the land in this District is still in the form of forests, both protected forests (1,604.07 kmÂ²) and secondary dry land forests (127.35 kmÂ²). The existing constraints in North Musi Rawas District are floods, forest fires, landslides and drought.

Pemanfaatan Limbah Organik dalam Pembuatan Bioinsektisda berbasis Bacillus thuringiensis sebagai Agens Pengendalian Hama Tanaman Caisim Brassica juncea Dessy Tri Astuti; Nurhayati Damiri; Yulia Pujiastuti; Siti Rakhmi Afriani
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 7 No. 2 (2018): JLSO
Publisher : Research Center for Sub-optimal Lands (PUR-PLSO), Universitas Sriwijaya

Astuti et al, 2018. Utilization of Organic Waste in the Making of Bacillus thuringiensis-based Bioinsecticides as Agents for Control of Caisim Brassica juncea Pests. JLSO 7(2):136-143.Â Bacillus thuringiensis was one of the entomopathogenic bacteria that can produces toxic crystal proteine (á´•-endotoksin). The use of bioinsecticide as a biological agent in pest control was one component of integrated pest control (IPM). The aimed of this reseacrh was to know the population of pests in plants and the percentage of damage to plants that exist in each treatment. The research was conducted in a vegetable garden in the Banyuasin district in November 2017 until January 2018. The research method used a randomized block design with 5 treatments and 4 blocks. The treatment was Bacillus thuringiensis KJ3R5 cultured in coconut water and rice washing waterÂ (A), Bacillus thuringiensis LC2 cultured in coconut water and tofu wastewater (B), commercial Bacillus thuringiensis (C), inorganic insecticide (sidametrin) (D), and water as control (E). The variables observed were arthropod populations on the canopy and ground surface of choy sum (Brassica rapa var. parachinensis or Brassica chinensis var. parachinensis) plants. The results showed that 4 species of pests i.e. Pyllotreta crucifera, Spodoptera litura, Plutella xylostella, and Helula sp. Treatment with Bacillus thuringiensis LC2 (B) resulted in reduction of plant damage by 61%.

Produktivitas dan Luas Lahan Minimal Petani Padi Sawah Lebak di Kabupaten Ogan Ilir Komala Sari; Ahmad Febriyansyah
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 7 No. 2 (2018): JLSO
Publisher : Research Center for Sub-optimal Lands (PUR-PLSO), Universitas Sriwijaya

Sari et al, 2018. Productivity and an Enlarge Minimum Land Area of Paddyâ€™s Farmers in Swamp Land of the Ogan Ilir Regency. JLSO 7(2):185-195.South Pemulutan is one of the sub-districts in Ogan Ilir Regency which has swamp paddy fields potential to be developed. Unfortunately, the use of production factors which applied by the farmers has not been maximized. Therefore, proper management by using production factors efficiently and effectively can increase productivity and maintain the sustainability of their farm. Moreover, the aims of this research were (1) to analyze the factors which affect the low productivity of the swamp paddy fields, (2) to calculate the percentage of an income of the swamp paddy fieldsâ€™ farmer which can fulfill their household outcome, (3) to calculate the minimum land area of the swamp paddy fields of the farmer. The method were used in this research was survey method. The sample of the farmers which taken in this study were 30 farmers from 187 farmers which works on swamp paddy fields in Lebak Pering village. The data was gathered consist of the primary data and the secondary data. The result of this research showed (1) factors which extremely affected toward swamp paddy fields productivity in Lebak Pering village was the largest of the area, seed variety, the used of urea fertilizer, the experiences of the farmer, while those that have no effect are the used of SP-36 fertilizer, NPK fertilizer and then the pesticides. (2) The contribution of swamp paddy fields farmersâ€™ income to farmers' consumption expenditure were 60.28%. (3) The minimum land area that suggested to be cultivated by the farmer is 1 hectare and if the farmer only relies on their swamp paddy fields farming, then the minimum land area that suggested to be raised by the farmer is 1.66 hectares.

Aplikasi Bahan Organik pada Tanaman Sorgum (Sorghum bicolor L.Moench) var. KD4 di Lahan Kering untuk Peningkatan Penyediaan Hara Suminarti, N.E.; A.Y. Guntoro; A. N. Fajrin
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 7 No. 2 (2018): JLSO
Publisher : Research Center for Sub-optimal Lands (PUR-PLSO), Universitas Sriwijaya

Suminarti et al, 2018.Â Application of Organic Matter in Sorghum Plants (Sorghum bicolor L.Moench) var. KD4 on Dry Lands for Soil Nutrient Supply Improvement. JLSO 7(2):144-156.Â The low content of soil organic matter and soil fertility are characteristics of dry land. Therefore, so the land can be utilized for agricultural farming, a material that is capable of acting as a soil improvement is needed, namely organic matter. The study aimed to examine the effect of the source and dosage of organic matter on the supply of nutrients, growth and yield of sorghum plants was carried out in July 2016 in the experimental garden of Â Brawijaya University. A split plot design was used in this study. The sources of organic material (sugar can waste, organic waste compost and cow dung) were set as the main plot, whereas doses of organic matter (125, 100 and 75) % of recommended dosage as subplots. The study was repeated 3 times. Soil analysis was carried out 3 times, namely: (1) before planting (BO, N content, P, K soil, soil pH and soil texture), (2) after application of organic material (BO and N, P, K soil content) and (3) after harvest (BO and N, P, K soil content). The agronomic observations were carried out destructively on generative phase at 80 days after planting (DAP) including the components of growth (root dry weight, leaf area, and total dry weight of the plant) and harvest at age of 90 DAP. F test at 5% level was used to test the effect of treatment, while the difference between treatments was based on LSD level of 5%. The results showed that there was a significant interaction between the source and dosage of organic matter on the variable leaf area and total dry weight. The highest yield was obtained in sugar can waste Â at various doses. Higher yields of seeds per hectare were also found in sugar can waste Â which is equal to 1.76 tons ha-1. The sugar can waste application Â is able to provide N, P and K soil elements of 18.3%, 85.68% and 8.42% respectively compared to organic waste compost and cow dung.

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Sabri Sudirman

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sabrisudirman@unsri.ac.id

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jlsuboptimal@unsri.ac.id

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Kab. ogan ilir,

Sumatera selatan

INDONESIA