Jurnal Lahan Suboptimal
Published by Universitas Sriwijaya
ISSN : 22526188     EISSN : 23023015
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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Pengaruh Kombinasi Pupuk Organik dan Hayati Terhadap Pertumbuhan dan Produksi Galur Jagung (Zea mays. L) Hasil Seleksi Efisien hara Pada Lahan Kering Marginal Moelyohadi, Yopie; Harun, M. Umar; Munandar, Munandar; Hayati, Renih; Gofar, Nuni
Jurnal Lahan Suboptimal Vol 2, No 2 (2013)
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This study aimed to study the growth and yield of maize crop nutrient  efficient  selection against  the  combination of different types of organic fertilizers and bio-fertilizers at low dose levels of chemical fertilizer on marginal dry land for the development of technological innovation fertilization on maize crops to reduce the use of chemical fertilizer on marginal dry land. This study was conducted in the field trials of Agro Techno Park (ATP), the Ministry of Research and Technology, South Sumatra from  January  to May  2012.   The experimental design used was SplitPlotdesign with three replications.   . The main plot treatment was dose levels of chemical fertilizer consists of : P1 = 50 % standard dose of ATP ( 200 kg urea , 50 kg SP36 and 25 kg KCl/ha ) and P2 = 25 % standard dose of ATP ( 100 kg urea , 25 kg SP36 KCl and 1.25 kg/ha) . treatment subplot , is the combined delivery of this type of organic fertilizer + biofertilizer types , comprising : KHO = control ( without organic fertilizer + biofertilizer ) , KH1 = composted cow manure + mycorrhiza , KH2 = composted cow manure + bacterial phosphate solvent , KH3 = composted chicken manure + biological mycorrhizae , KH4 = composted chicken manure + bacterial phosphate solvent , KH5 = compost straw corn + mycorrhizae , KH6= composted maize straw + bacteria phosphate solvent , KH7 = compost Legume cover crop ( LCC ) + Mycorrhiza and compost KH 8= legume cover crop (LCC) + solvent bacteria Phosphate.  The results showed that chicken manure compost fertilizer + fertilizer mycorrhizal give the best effect on the growth and yield of dryland corn yields marginal with an average of 9.70 tons of dry cobs/ha and the combined treatment of chemical fertilizer at 50 % level and composting chicken manure + mycorrhizal give the best effect on the growth and yield of maize in marginal dry land , with an average yield reached 10.51 tons of dry seed/acre.
Aplikasi Cycocel dalam Pengendalian Getah Kuning Buah Manggis (Garcinia mangostana L.) pada Lahan Kering Irianto, Irianto; Ichwan, Budiyati; Mapegau, Mapegau
Jurnal Lahan Suboptimal Vol 2, No 2 (2013)
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The aim of this experiment was to gain the accurate concentration of cycocel growth for controlling of yellow latex mangoesteen in different age level on field water stress.  This experiment was conducted in Koto Patah village, Keliling Danau, Kerinci, Jambi and was done from June until November 2011 at the altitude of 800 - 900 meter above sea level. Factorial experiment was arranged in a randomized block design. The first factor was cycocel concentrations: 0; 1.500; 3.000; 4.500; dan 6.000 mg L-1.  The second factor was levels of age plants: <30; 30-50; and >50 years.  The data were analyzed by using analysis of variance and continued with BNT test at α=5%.  The results of experiment showed that: (1) the impact of cycocel on number and weight of perfect fruits depended on the age of manggoesteen; (2) manggoesteens which were less than 30 years old and treated with 4.500 mgL-1 cycocel could increase number and weight of perfect fruits; (3) manggoesteens which were older, 30-50 years old and above 50 years old needed less cycocel namely 1.500 mgL-1 for increasing number and weight of perfect fruis.
Remediasi Lahan Berpasir di Waisamu yang Ditanami Jagung Lokal melalui Aplikasi Kompos Ela Sagu Tatipata, Aurellia; Jacob, A.
Jurnal Lahan Suboptimal Vol 2, No 2 (2013)
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Soil in Waisamu in generally was sandy and grow with Imperata cylindrica. The aim of our experiment were to sandy soil remedied through ela sagu compost, increase growth and production of local corn. The experiment was important in attempting to make the best of sandy soil function become agriculture soil, in order to cultivate and increasinggrowth and production of local corn to improve the sustanaibility of food supply.The experiment was conducted in Waisamu and consisted of two factors and three replications, using  Randomized Complete Block Design. The first factor was compost dosage,  consisting of five levels, i.e. 0 ton per hectare, 7.5 ton per hectare, 10 ton per hectare, 12.5 ton per hectare, 15 ton per hectare. The second factor was delima corn. The variables observed for compost quality were C/N ratio, mineral content N, P, K, Ca, Mg, Fe, and  initial macro and micro nutrient of soil. Height and leaf area of plant, length, weigh, diameter of corn ear and weight of dry shelled were observed for growth and production of plant. The results proved that C-organic content, macro and micro nutrient in compost can increase organic substance, macro and micro nutrient of soil,improving plant growth and local corn production. Ela sagu compost can remedied sandy soil. The higher dosage until 15 ton per hectare of the compost the higher of growth and productionof corn.
Kecernaan Pelepah Sawit Fermentasi dalam Complete Feed Block (CFB) untuk Sapi Potong Fariani, Armina; Abrar, Arfan; Muslim, Gatot
Jurnal Lahan Suboptimal Vol 2, No 2 (2013)
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Palm midrib that was one of all agroindustries unused. It could be pontential as animal feeding. It could used as animal feeding with made it Complete Feed Block (CFB). This research aimed to study the fermentation of  palm  midrib in complete feed block (CFB) on the quality of degestibility in vitro. The research was conducted three phases, the first phase of the fermentation of  palm  midrib grounding  with White Root Fungy, the second stage of the manufacture of complete feed block (CFB) and the third stage of the proximate analysis and digestibility analysis, The research was in  Nutrition  and animal feeding  Laboratory,  Agriculture Faculty, Srivijaya University. This research used Completely Randomized Design (CRD) with two treatments and five replications consisting of Formula 1 and Formula 2, the parameters were observed dry matter, crude fiber, crude protein, Extract Either, BETN, dry matter digestibility coefficients, organic matter digestibility coefficients and the concentration of N-NH 3. The result of CFB formulation  were formula 1 TDN: crude protein (47.32%: 13.93%), formula 2 (48.41%: 7.96%), where the results of proximate analysis showed F1: 98.66% DM, LK 13:19%, 7:03% PK, SK 35.79%, 40.24% BETN, and F2: 98.41% DM, LK 16:43%, PK 6.25%  SK 24.06%, 49.50% BETN. Formulations showed that all treatments influence  non significantly (p> 0.05),  organic matter digestibility (85.00% vs. 85.70%), dry matter digestibility (59.42% vs. 59.62% vs. 16.72%) and the concentration of N-NH 3 (2.2% versus 1.8 %). The conclusion of this study is the complete feed block (CFB) can be used as a ruminant animal feeding, but should pay attention to aspects of quality and palatability.
Uji Adaptasi Beberapa Varietas Sorgum (Sorghum bicolor L.) pada Lahan Kering di Kabupaten Ciamis, Jawa Barat Sutrisna, Nana; Sunandar, Nandang; Zubair, Anas
Jurnal Lahan Suboptimal Vol 2, No 2 (2013)
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Sorghum is one of the crops that can be used as a source of food, animal feed, and industrial raw materials. Sorghum is also resistant to drought, so the potential to be developed on land suboptimal, including on dry land in Kudat District, West Java Province. The research aims to determine the adaptability of some varieties of sorghum on dry land in Kudat District, West Java Province. Research conducted dilahan farmers in July to November 2011. Experiments using Randomized Complete (RAKL) with seven varieties of treatment and repeated three times. To seven varieties tested were (1) Numbu, (2) Kawali, (3), Padjadjaran University 1, (4) Padjadjaran 2, (5) Batari, (6) Keller, and (7) Taomitsu. Data growth and yield components and yield is analyzed by the Duncan test at 5% level. The results showed that (a) all of the tested sorghum varieties well-adapted to dry land in Kudat District, West Java Province, and (2) varieties numbu, unpad 2, and Kawali give different results, both to the growth variables and components yield and productivity but better than the four other varieties, so that the three varieties can be developed on dry land in Kudat District, West Java Province.
Efikasi Herbisida Penoksulam pada Budidaya Padi Sawah Pasang Surut untuk Intensifikasi Lahan Suboptimal Guntoro, Dwi; Agustina, Karlin; Yursida, Yursida
Jurnal Lahan Suboptimal Vol 2, No 2 (2013)
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An experiment on herbicide Penoksulam 25.5 g/L was conducted in tidal land. The objectives of this experiment was to determine the effectiveness of herbicides in controlling weeds in lowland rice. The experiment was conducted from November 2012 to March 2013. Randomized block design (RBD) with 6 treatments and 4 replications was used. The treatments tested the herbicide Penoksulam 25.5 g/L dose of 0.60 L/ha, 0.75 L/ha, 0.94 L/ha, 1,125 L/ha, manual weeding and control. The experimental unit was a plots measuring 5 m x 5 m. The results showed that the application of penoksulam 25.5 g/L  could to control weeds of lowland rice. Dominance weeds species in tidal land were Fimbristylis littoralis, Ludwigia octovalvis and Cyperus Iria. Application of herbicide at doses 0.60 L/ha up to 1.125 L/ha caused only mild symptoms of phytotoxicity on rice. Herbicides could be used to increase low land rice production on effective dose 0.60 L/ha to 0.75 L/ha.
Pengaturan Aplikasi Pupuk Nitrogen Untuk Meningkatkan Toleransi dan Pemulihan Tanaman Padi Terhadap Cekaman Terendam Gribaldi, Gribaldi; Suwignyo, Rujito A.; Hasmeda, Merry; Hayati, Renih
Jurnal Lahan Suboptimal Vol 2, No 2 (2013)
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Abstract

The influence of global climate to the Indonesian climate condition has been in serious condition which was already in high intensity. Flood becomes the fenomena in almost all area in Indonesia. In a swamp area, it can obstruct rice plant cultivation. The submerged rice plant create the obstruction of the rice plant photosynthesis and stress after being submerged. So that  an effort is needed to increase  its tolerance and recovery in order the reduction of the unhulled crop can be reduced.   This study was aimed to obtain a method to increase rice stage is vegetative  tolerance and recovery to submergence stress through the arrangement of nitrogen fertilizer aplication and rice variety.  The experimental design used was factorial completely randomized design with six replications. The factor consists of rice varieties (Inpara 3, Inpara 5, IR 64) and  treatment (P): P1: no submergence, all N dosage prior planting; P2: submerged (7-14 DAP), all N dosage prior planting; P3: submerged (7-14 DAP), all N dosage prior planting + (Si+Zn); P4: submerged (7-14 DAP), ½ N dosage prior planting + ½ N dosage 42 DAP + (Si+Zn); P5: submerged (7-14 DAP and 28-35 DAP), all N dosage prior planting; P6: submerged (7-14 DAP and 28-35 DAP), all N dosage prior planting + (Si+Zn); P7:  submerged (7-14 DAP and 28-35 DAP), ½ N dosage prior planting + ½ N dosage 42 DAP + (Si+Zn). The results showed that the arrangement of nitrogen fertilizer application before submerged to rice plant can increase the rice plant tolerance and recovery to the submerged stress.  The increasing of tolerance and recovery can be obtained at the rice variety given ½ N dosage prior planting + ½ N dosage 42 DAP + (Si+Zn).
Pengaruh Sisa Amelioran, Pupuk N dan P terhadap Ketersediaan N, Pertumbuhan dan Hasil Tanaman Padi di Musim Tanam Kedua pada Tanah Gambut Subatra, Kurniawan
Jurnal Lahan Suboptimal Vol 2, No 2 (2013)
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The objective of this research was to know the residual effect of Ameliorant and N, P-fertilizer on availability of nitrogen, growth, and rice yield on the second of season planting on peat soil. This research was conducted from May 2006 until September 2006 at Green House of Soil Department of Agriculture Faculty, Sriwijaya University. This research use Randomized Completely Block Factorial Design with three factors of treatment and three applications. First treatment was two dosages (0 and 5 ton/ha) of ameliorant that was consist of organic manure and dolomite and the second and third was three dosages (0, 50, 100 kg/ha) of N and P-fertilizer. Result of experiment showed that ameliorant, N and P-fertilizer with their combination have given significant effect on availability of nitrogen, but haven’t given significant effect on growth and rice yield on the second season cropping on peat soil.
Respon Pertumbuhan Tanaman Padi Terhadap Beberapa Rekomendasi Pemupukan Hasil Litbang Pertanian Syahri, Syahri; Somantri, Renny Utami
Jurnal Lahan Suboptimal Vol 2, No 2 (2013)
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Indonensian Agency for Agricultural Research and Development (IAARD) has issued some fertilization recommendations, such as fertilization based on Soil Test Kit for Low Land Rice (PUTS) and Planting Calendar (PC). The reasearch aimed to introduce and examine the effects of various fertilizer recommendations, especially on low land. The research was conducted in Lubuk Sakti village, Indralaya sub-district, Ogan Ilir district from April to Agustus 2013. The research was arranged in 3 treatments fertilization based on PUTS,  PC and farmer practice (control). The rice varieties used Inpari 12. Legowo plating system was applied by 4:1 (plant spacing 25 x 50 x 12.5 cm) and farmers practice (plant spacing 25 x 25 cm). The plot size was 13 m x 27.5 m. The results showed that both of fertilizer recommendations issued by IAARD were able to increase rice productivity than control.  STK, PC and control with the yield 5.60 t/ha, 6.56 t/ha and 5,20 t/ha, respectively. Fertilizer recommendations also reduced rice pests and diseases.
Kajian Sistem Tumpangsari Jagung Manis dan Kedelai di Lahan Kering Kabupaten Musi Rawas Kriswantoro, Haris; Hermanto, Hermanto
Jurnal Lahan Suboptimal Vol 2, No 2 (2013)
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Potensi lahan kering di Kabupaten Musi Rawas cukup luas, dari luas lahan 1,2 juta hektar, 92,1 persen merupakan lahan kering, umumnya didominasi oleh tanah Ultisol.  Tanah jenis ini bersifat masam (pH tanah rendah), miskin hara, mudah tererosi, mempunyai kandungan Al dan Fe yang tinggi serta kandungan bahan organik tanah yang rendah.  Pengkajian sistem tumpangsari jagung manis dan kedelai di lahan kering yang bertujuan untuk menentukan pengaruh sistem tumpangsari terhadap pertumbuhan dan produksi jagung manis dan kedelai, telah dilaksanakan di Desa Lubuk Rumbai Kabupaten Musi Rawas pada bulan November 2012 hingga Maret 2013.  Pengkajian dilaksanakan dengan menggunakan metode eksperimental yang terdiri dari 4 macam perlakuan sistem penanaman, yaitu: tumpangsari jagung manis dan kedelai tanpa pengapuran, tumpangsari jagung manis dan kedelai tanpa pengapuran, monokultur jagung manis dan monokultur kedelai.  Varietas jagung manis yang digunakan adalah Master Sweet dan varietas kedelai adalah Anjasmoro.  Kedelai menggunakan jarak tanam 40 cm x 15 cm untuk perlakuan tumpangsari dan monokultur, sedangkan tanaman jagung pada perlakuan tumpangsari menggunakan jarak tanam 200 cm x 75 cm dan jarak tanam 75 cm x 50 cm untuk monokultur.  Hasil ansira memperlihatkan bahwa pada tanaman jagung manis perlakuan sistem penanaman memberikan pengaruh yang sangat nyata terhadap tinggi tanaman, jumlah tongkol, panjang tongkol, pengaruh nyata terhadap berat basah berangkasan dan pengaruh tidak nyata terhadap jumlah daun dan berat tongkol per tanaman, sedangkan terhadap tanaman kedelai perlakuan sistem penanaman memberikan pengaruh yang sangat nyata terhadap tinggi tanaman, jumlah cabang, jumlah polong, berat 100 biji, produksi per petak dan memberikan pengaruh tidak nyata terhadap berat polong per tanaman. Berdasarkan hasil uji BNJ dan tabulasi menunjukan bahwa perlakuan sistem tumpangsari jagung manis dan kedelai dengan pengapuran memberikan pengaruh terbaik terhadap pertumbuhan dan produksi jagung manis dan kedelai

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