Jurnal Lahan Suboptimal : Journal of Suboptimal Lands
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Ketahanan Varietas Padi Toleran Rendaman dan Responnya Terhadap Pemupukan
No full textIkhwani. 2012. Resistency of Submergence Tolerant Rice Variety and Its Response to Fertilizers. JLSO 2(1):1-13.Submergence Tolerant Rice Varieties (STRV) were needed to anticipate yield reduction due to flash flood. Adoption of good agriculture practices such as nutrient managements for the varieties was expected to reduce yield declaining due to submergence. The objectives of this study were to understand the effects of submergence, fertilizers application and their interaction to plant growth pattern. A pot experiment was conducted in glasshouse at Muara Experimental Farm, Bogor from July to October 2011. The experiment was arranged in a factorial randomized complete block design with three replications.  Factor 1 was Fertilizer of 112.5 kg N / ha, in the form of prill urea (P1), SCU / ha (P2), Carbon Coated Urea (CCU) (P3), 400 Ponska kg + 100 kg urea / ha (P4), and treatment1 + 400 kg Silicate fertilizer / ha (P5). Factor 2 was Variety, namely Ciherang sub 1 (V1), Inpara 4 (Swarna sub-1) (V2), Inpara 5 (IR64 sub1) (V3). Total treatments were 15 plus one set of "without submergence" treatment and their replications as controls. The duration of submergence was 14 days, (14 DAT - 28 DAT).  The results showed that submergence reduced rice yield up to 17.5% compared to without submergence, or from 19,2 g/pot to 15,9 g/pot. Submergence decreased plant growth rate, tiller number and delayed plant maturity. Decreased of plant height and tiller number for Ciherang sub 1 variety was the lowest. Threatment of fertilizer with urea prill at this experiment was still the best. In this experiment, urea fertilizer lost due to submergence and washing was neglecte
The Response of Rice (Oryza sativa L.) to Organic Fertilizer Plus and Organic Pesticides under the System of Rice Intensification (SRI) in Tidal Lowlands
No full textMarlina et al. 2012. The Response of Rice (Oryza sativa L.) to Organic Fertilizer Plus and Organic Pesticides under the System of Rice Intensification (SRI) in Tidal Lowlands. JLSO 1(2):138-148. This study aims at evaluating the response of rice (Oryza sativa L.) to the dosage and type of organic fertilizer plus and organic pesticides under the System of Rice Intensification (SRI) in tidal lowlands. This research was implemented at the rice field Desa Tanjung Sari, Kecamatan Tanjung Lago, Kota Terpadu Mandiri  (KTM) Telang, Kabupaten Banyuasin. The research was conducted from December 2010 until March 2011. It employedFactorial Group Randomized Design (RAK) to allow each factor were repeated 3 times for 5 plant samples. Variability analysis indicates that the provision of the dosage of organic fertilizer plus provided significant  effect on plant height, the number of seedlings, the number of productive seedlings, grain per panicle, production, and the percentage of infestation. However, it did not show significant  effect on the percentage of empty grains. The provision of organic pesticides provided significant effect on grain per panicle, production, the percentage of pests, but gave no effect on plant height, the number of seedlings, the number of productive seedlings, and the percentage of empty grains. The combination of powdered organic fertilizer plus of  750 kg / ha and  organic pesticides (animal and vegetable pesticides) gave  the highest production of 2.23 kg/plot or 5.57 ton/ha
Produktivitas dan Ketahanan Galur Harapan Padi terhadap Penyakit Tungro di Sumatera Selatan
No full textThamrin et al. 2012. Productivity and Resistancy of the Tungro-resistant Rice Variety in South Sumatra. JLSO 1(2):130-137. The establishment of new varieties is required to have the advantage of being more diverse and specific according to agroecosystem, problems in the field, the specific location and consumers’ preference. Prior to its establishment, a tungro-resistant rice variety needs to be tested locally. This research was carried out on the rain-fed rice field at the village of Lubuk Seberuk Sub-district Lempuing, Ogan Ilir Komering Regency (OKI)  in 2009. This research employed randomized block design (RGD) with 10 treatments consisted of eight strains and two improved varieties as a comparison. Each treatment was repeated 3 times. The results indicated that strain B-10018G-TB-42-1 has the least tungro attacks and the highest number of tillers and production compared to the other strains and varieties
Keanekaragaman Spesies Pemangsa Thrips (Thysanoptera:Thrypidae) di Sekitar Pertanaman Cabai (Capsicum annuum L.) di Dataran Rendah dan di Lahan Lebak Wilayah Jambi
No full textPredatory thrips species is very important to restrain pest population in the field. This study was conducted to explore and analyze the diversity of predatory thrips species in and around chili planting in the lowland and swamp areas in Jambi. The survey was conducted at 13 sites in the lowlands and 6 sites in the swamp areas. The survey found 22 species of thrips predators in lowlands and 6 six species in swamp areas which are grouped into nine families. Predatory thrips species in the lowlands were Ammoplanus sp., Cheilomenes sexmaculata, Chilocorus melanophthalmus, Chilocorus ruber, Chrysopoda sp., Coccinella repanda
In-situ Evaluation of Growth Rate and Yield Components of Several Non-tidal Swamp Rice Accessions in South Sumatera
No full textHalimi et al. 2012. In-situ Evaluation of Growth Rate and Yield Components of  Several Non-tidal Swamp Rice Accessions in South Sumatera. JLSO 1(2):107-115Rapid increase of agricultural land conversion has led to the intensified utilization of  non-tidal swamp. The objective of this research was to identify growth rate and yield components of several rice accessions of non-tidal lowland swamp of South Sumatera. This research incorporated the cultivation of nine rice accessions in non-tidal swamp area. Research plots were prepared by local farmers to include  27 plots of 280 cm x 80 cm following the Complete  Randomized Block Design. Research indicated that rice accessions might be classified into 3 groups of Low Growth Rate (LGRA), Intermediate Growth Rate (IGRA), and High Growth Rate (HGRA) accessions. Each group has different growth rate according to the field water level during flooding season of < 5 cm, 5 to 6 cm, and >6 cm per week, respectively. The LGRA group consisted of Petek (A5) and Senia (A6), the IGRA group consisted of Bone (A1), Pelita Rampak (A2), and Sawo Rimbo (A7) and the HGRA group consisted of Kuning (A3), Siam (A4), Sawah Beling (A8) and Putih Olak (A9). Some yield components tended to decrease as the growth rate increased, and some varied depending on the accessions. For effective and efficient cultivation, farmers should apparently consider growth rate and yield potential to decide which rice accessions to grow
Growth and Persistence of Snakehead Fry Treated with Feed from Snail Flour
No full textSasanti & Yulisman. 2012. Growth and Persistence of Snakehead Fry Treated with Feed from Snail Flour. JLSO 1(2):158-162. An experiment was conducted to observe the effects of feed from snail flour on the growth and survival rate of snakehead fish (Channa striata)fry. There were three treatments, each had three replications, stocked with 20 fry. The three diets treatments were artificial feed A with 35% snail flour, artificial feed B with 40% snail flour and artificial feed C with 45% snail flour. Snail flour was made from Pomacea sp. Survival and growth rate of fry were not significantly different among the three different treatments
Potensi Pengembangan Jagung di Sumatera Selatan
No full textThe demand of corn continues to increase along with the increasing of populations and industries. Compliance efforts could be done by increasing productivity through extensification and intensification farming. Statistical data showed that corn harvested area and production in South Sumatra over the period 2000-2012 was very volatile but had a tendency to increase since 2006. The area of ​​land suitable for development of corn in South Sumatra, which amounted to 898,877 ha. This area consists of the intensification of land (205,709 ha), extensification of land (159,444 ha) and the diversification of land (533,724 ha). Land use for corn so far has been done in some districts/cities having dry land like Ogan Komering Ulu (OKU), OKU Timur, Ogan Ilir, Ogan Komering Ilir well as in several districts that have ups and downs like agro Banyuasin and Musi Banyuasin. South Sumatra AIAT demonstration plots showed that significant productivity of corn. In 2010, IPM demplot of Mulyasari village, sub district of Tanjung Lago, District of Banyuasin showed that productivity of Bima 4 (8.8 t/ha), Bima 5 (8.3 t/ha), and Bisi 2 (8.4 t/ha), whereas in 2011 Banyuurip demplot showed that productivity of Bima 3 (11.27 t/ha) and Sukmaraga (8.13 t/ha)
Suitability of Tidal Swamp for Rubber Plantation in Three Villages of Ex Rice Mega Project, Pulang Pisau Regency, Central Kalimantan Province
No full textFirmansyah 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
Aplikasi Isolat Bakteri Hidrokarbonoklastik asal Rizosfer Mangrove pada Tanah Tercemar Minyak Bumi
No full textGofar. 2012. Application of Hydrocarbonoclastic Bacteria Isolates from Mangrove Rhizosphere on Petroleum Polluted Soil. JLSO 1(2):123-129.This research was aimed at studying the ability of hydrocarbonoclastic bacteria to reduce total petroleum hydrocarbon of petroleum polluted soil. The hydrocarbonoclastic bacteria were isolated from rhizosphere of mangrove grown on petroleum contaminated soil in Sungsang, Sumatra Selatan. The samples were taken using a defined sampling method from the oil contaminated areas. Soil samples around the roots of mangrove plants were randomly taken in the contaminated    area.  Isolates obtained from the isolation and selection of bacteria from mangrove forests were overhauled at the laboratory-scale using oil-enriched medium following a completely randomized design. Nine isolates of hydrocarbonoclastic bacteria were found to be capable of growing on petroleum contained medium in vitro. Two best isolates in degrading petroleum hydrocarbon compound were Pseudomonas alcaligenes (I5) and Alcaligenes facealis (I8). P. alcaligenes and A. facealis were able to decrease TPH up to 63% and 70% respectively. The ability of these isolates in degrading hydrocarbon compound was 6.5-7.0 times higher than the control.Â
The Improvement of Rice Postharvest Technology in Sub-Optimal Land
No full textHasbi. 2012. The Improvement of Rice Postharvest Technology in Sub-Optimal Land. PLSO 1(2):186-196. Rice is the most exerted food crop commodity in Indonesia. Rice production has continuously been increased in order to support food security policy. Improvement of cultivation technology has been proved to increase rice production significantly. Increase in rice production should be followed by the improvement of rice quality based on the standard and consumer preference. The improvement in quality may also be enhanced by proper postharvest technology. Improvement of rice quality will result in more added value on rice. Therefore, proper technology which includes production, harvest, and post harvest should be done in an integrated manner in order to increase rice quality and at the same time decrease weight loss. Rice postharvest technology consists of harvesting, threshing, transportation, drying, cleaning and storage. These postharvest activities are often followed by rice milling. However, farmers awareness and knowledge regarding proper postharvest technology are lacking and its application is considered low. Improvement of postharvest handling technology should be prioritized to include three stages, which are harvesting, threshing and drying due to high loss occured in these stages. The improvement of harvest and postharvest technologies should incorporate human resource ability and information dissemination based on the principles of Good Handling Practices (GHP)