Jurnal Lahan Suboptimal : Journal of Suboptimal Lands
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Upaya Peningkatan Pertumbuhan dan Produksi Gambas Melalui Pengaturan Jarak Tanam dan Waktu Penyiangan di Lahan Kering
No full textGribaldi 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. 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
Solubilisasi Fosfat Anorganik oleh Burkholderia spp. pada Rizosfer Kelapa Sawit (Elaeis guineensis Jacq.) di Tanah Mineral Masam
No full textNugraha et al, 2019. Solubilization of Inorganic Phospate by Burkholderia spp. Associated with Oil Palm Rhizosphere in Mineral Acid Soil. JSLO 8(1):86-93.Phosphate Solubilizing Bacteria (PSB) play important role by enhancing phosphate availability bounded with Al3+ or Fe3+ in acidic soils to oil palm plants through release the inorganic phosphate by enzyme or organic acids solubilization. The aims of this study were to isolate of PSB from oil palm rhizosphere and to conduct a comparative analysis of the solubility inorganic phosphates source by selected PSB. The ability of 15 selected PSB to grow and solubilize aluminum phosphate (AlPO4) and iron phosphate (FePO4) was examined and identified. The highest phospate solubilising efficiency showed K3.1 isolate with phosphate solubilization index 3.2 on NBRIP media. Quantitative analysis revealed that isolate K3.1 solubilized 53.52 mg/mL phosphate in 5 days after being inoculated in AlPO4 containing liquid medium, isolate A4 solubilized 63.45 mg/mL phosphate in 5 days after being inoculated in FePO4 containing liquid medium accompanied by a decrease in pH of the growth medium. Based on the 16s rRNA gene sequence analysis, isolate K3.1 and A.4 were closely related to Burkholderia arboris and Burkholderia gladioli. This potential isolates can be used in order to make oil palm crops more sustainable especially on marginal soil with low pH and less dependent on inorganic P fertilizers.Â
Efektifitas Pertumbuhan Benih Betok (Anabas testudineus) Menggunakan Vitamin C dan D sebagai Suplemen Pakan
No full textHelmizuryani et al, 2018. Growth Effectivity of Climbing Perch (Anabas testudineus) Used Vitamin C and D as Feed Suplement. JLSO 7(2):164-173. 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
Populasi Serangga Hama dan Artropoda Predator pada Padi Rawa Lebak Sumatera Selatan yang Diaplikasikan Bioinsektisida dari Beauveria bassiana dan Insektisida Sintetik
No full textHanif et al, 2019. Population of Pest Insects and Predatory Arthropods Inhabiting Freshwater Swamp Rice of South Sumatra Treated with Bioinsectide of Beauveria bassiana and a Synthetic Insecticide. JLSO (8)1:31-38.Entomopathogenic fungi, Beauveria bassiana, could  kill various species of insect pests, but  their impact on predatory arthropods needs to be studied. The aim of this study was to compare population of pest insects and predatory arthropods inhabiting rice sprayed with bioinsecticide of B. bassiana and conventional rice field using a synthetic insecticides. Bioinsecticide was made from conidia of B. bassiana and sprayed on rice canopy. The plot of conventional farmers was sprayed with synthetic insecticides made from Abamektrin. The results showed that the application of bioinsecticide of B. bassiana was not proven to reduce the pest insect population. The abundance of natural enemies of pest insects, such as  spiders and predatory insects was also more abundant in plots sprayed with  bioinsecticide than conventional plots that used synthetic insecticide. The synthetic insecticides have been shown to reduce the abundance of predatory insects and spiders. Bioinsecticides containing carrier of  liquid compost were proven to increase the growth and development of rice, which was an increase in the number of rice tillers per clump in plots applied by bioinsecticide. Thus, B. bassiana of bioinsecticide with liquid compost carrier material was safer and could maintain the abundance of predatory arthropods and increased rice growth
Pemanfaatan Berbagai Jenis Pupuk Organik Hayati terhadap Produksi Bawang Merah (Allium ascalonicum L.) di Tanah Pasang Surut Tipe Luapan C Asal Banyuurip
No full textMarlina et al, 2018. Utilization of Various Types of Biofertilizer on the Production of Shallots (Allium ascalonicum L.) in overflow type C Tidal Soils from Banyuurip. JLSO 7(1):74-79. Tidal land has considerable potential to be used as agricultural land, one of which is for shallot, but the obstacles faced in this tidal land are high soil acidity and low soil fertility. Therefore, to increase the production of onion plants can be given biological organic fertilizer. This study aimed to analyze the right type of biological organic fertilizer in increasing the production of shallots. This research was carried out at the Greenhouse in Palembang. The design used was Factorial Randomized Completely Block Design with consisted of 4 treatment factors with 6 replications for each treatment. The first factor was control (O0), the second factor was biofertilizer enriched with Azospirillum (O1) bacteria, the third factor was biofertilizer enriched with phosphate solvent bacteria (BPF) (O2), and the fourth factor was biofertilizers enriched with Azospirillum and BPF bacteria. The results showed that the treatment of Azospirillum and BPF-enriched biofertilizers gave the best production per hill of onion by 85.33 g
Pemanfaatan Limbah Organik dalam Pembuatan Bioinsektisda berbasis Bacillus thuringiensis sebagai Agens Pengendalian Hama Tanaman Caisim Brassica juncea
No full textAstuti 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. Bacillus thuringiensis was one of the entomopathogenic bacteria that can produces toxic crystal proteine (ᴕ-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 water (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%
Evaluasi Perubahan Iklim dan Pengaruhnya terhadap Pola Tanam, Waktu Tanam serta Produktivitas Kedelai (Glycine max L. Merrill) Di Kabupaten Malang Jawa Timur
No full textHerlina et al, 2018. The Evaluation of Climate Change and The Effect to Cropping Pattern, Panting Season and Productivity of Soybean (Glycine max L. Merrill) in Malang Regency, East Java. JSLO 7(2):106-120. Climate change is a negative impact due to development activities on Earth. Forests that lose function caused degradation and increases in greenhouse gas concentrations cause global warming and trigger climate change. Climate change is thought to affect cropping pattern, planting time and soybean productivity. The purpose of the study was to evaluate the expected climate change and analyze correlation between climatic elements and the pattern and time of planting and soybean productivity. The research was carried out in March to April 2018 in Kalipare, Donomulyo, Singosari and Dau, Malang Regency, East Java. The tool used is a questionnaire. The material are the climate elements, soybean productivity and interview data. This study uses survey research methods. Total respondents were 40 farmers. Climate change analysis by analyzing mean changes in temperature, rainfall and number of rainy days in period 1 (1988-1997), period 2 (1998-2007) and period 3 (2008-2017). Correlation coefficient analysis is used to determine the correlation between climatic elements and soybean productivity and followed by t test. The results show that climate change has occurred in Malang Regency for the past 30 years. The correlation between temperature, rainfall with soybean productivity showed a "low" correlation, while number of rainy days with soybean productivity had a "very low" correlation. Temperature significantly affected soybean productivity in Malang Regency. Soybean cropping patterns was not affected by climate change, but planting time was influenced by shifting seasons
Pemetaan Status Unsur Hara Fosfor Perkebunan Kelapa Sawit Rakyat di Kelurahan Babat Sumatera Selatan
No full textIswahyudi et al, 2019. Oil Palm Plantation’s Phosporous Mineral Mapping on Babat District South Sumatera. JLSO 8(1):77-85. Soil nutrient status mapping was not initiated which lead to inefficiency in fertilization. Fertilizition without nutrient analysis could lead to nutrient deficiency or toxicity of nutrint. The Purpose of this research was to identify, map the nutrient status and fertilization recomendation of phosporous nutrient status in public oil palm plantation at Babat Village Babat Toman Districts Musi Banyuasin District South Sumatera Province. This research used a detailed survey methode with grid system for 16 sample which represent 16 ha and 60 cm depth of soil drilling. Phosporous nutrient status at research location ranged from 4,81 ppm to 21,86 ppm. 7 ha contained 8-20 ppm available phosphorous ot classified into medium, 6 ha contained < 8 ppm available phosphorous or classified into low and 3 h contained >20 ppm available phosporous or classified into high. Soil reaction (pH) of the research field was 5,0 and 5,5 which classify the soil into acid soil. Fertilization implemented to increase the nutrient status until medium (15 ppm) which resulted in SP-36 doses was 346,22 kg/ha for low nutrient status and 139,33 kg/ha for medium nutrient status
Evaluasi Kualitas Fisik dan Uji Palatabilitas Ransum Berbasis Rumput Kumpai Tembaga (Hymenachne acutigluma) Melalui Kombinasi Lumpur Sawit dan Daun Ubi Kayu
No full textRiswandi et al, 2018. Physical Quality Evaluation and Palatability of (Hymenachne acutigluma) through Combination of Palm Oil and Cassava Leaves. JLSO 7(2):204-212. 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. This reseach  was done in 3 months in Cattle Nutrition and Feed Laboratory and Livestock Experiment Studies Program Faculty of Agriculture, University of Sriwijaya. This reseach used completely randomazed design method with 4 treatments and 4 replications. 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). The observed variabels are smell, water ration, density and palatability of feed consisted. 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. The result of the palatability rations show thet the treatment of R1 is the most favored by the livestock. 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
Respon Penambahan Pupuk Hayati terhadap Pertumbuhan dan Hasil Padi Sawah
No full textJumakir J, Endrizal E. 2019. Response of biological fertilizer addition to growth and results of rice field. Jurnal Lahan Suboptimal: Journal of Suboptimal Lands. 8(2):173-180. 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