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Merakati Handajaningsih
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Akta Agrosia
Published by Universitas Bengkulu
ISSN : 14103354     EISSN : 26157136     DOI : https://doi.org/10.31186/aa
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Akta Agrosia is dedicated to researchers or academics who intent on publishing research, scientific thinking, or other scientific ideas. The articles published in the Akta Agrosia are the author’s original works covering on Crop Production, Crop Physiology, Pest and Disease, Soil Science, Agronomy, Plant Genetics, Plant Breeding, Plant Biotechnology. Akta Agrosia is published by the Department of Crop Production, Faculty of Agriculture, University of Bengkulu, biennially in June and December. ISSN:1410-3354 (printed media) and eISSN: 2615-7136 (online media).
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Agronomi dan Ilmu Tanaman
Articles 133 Documents
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Pertumbuhan dan Hasil Jagung Hibrida pada Ultisol Putra, Irawan Haji; Suprapto, Suprapto; Ganefianti, Dwi Wahyuni
Akta Agrosia Vol 18 No 2 (2015)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Fakultas Pertanian, Universitas Bengkkulu

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Abstract

Hybrid corn cultivated on Ultisol performs high production when organic matter and liming are incorporated into the soil under high application of fertilizer. This agricultural practice resulted in high cost production. A series of researches with the goal to produce high yielding of hybrid corn under low input of fertilizer is going to be a benefit. Field experiment was conducted from April until July 2010 in Manna, South Bengkulu. Single factor consisted of 7 genotipes of corn was set using Randomized Complete Block Design. The seven genotypes were marked as H1, H2, H3, H4, H5, H6 (Prima), and H7 (DK); the last two of which were commercial varieties commonly grown by farmers. The genotypes that showed good adaptation on Ultisol were H1, H2, and H3. These genotypes yielded 5.11 tons ha-1 for H1, 5.56 tons ha-1 for H2, and 5.64 tons ha-1 which were higher than commercial varieties (4.46 tons ha-1 for Prima and 4.62 tons ha-1 for DK). Plant height for H1, H2, and H3 were 1.78 m, 1.80 m, and 1.88 m respectively, while plat height of Prima and DK were 1.45 m and 1.51 m. 
The Effect of Local Organic Fertilizer from Rubber Processing Waste on the Yield of Rubber Plants Simanjuntak, Ernawati; Prasetyo, Prasetyo; Hartal, Hartal
Akta Agrosia Vol 21 No 1 (2018)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Fakultas Pertanian, Universitas Bengkkulu

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Abstract

Rubber plant is an important industrial crop, as for economic community and a source of non-oil foreign exchange for the country.  In Indonesia, 85% rubber planting area is community rubber plantation with its productivity is still very low (700 - 900 kg ha-1 year-1), compared to its potential which can be more than 1,500 kg ha-1 year-1.  The low productivity of community rubber plantation is because of the lack of proper handling and maintenance of their plants.  Efforts is needed to improve the quality and productivity of community rubber plantation so as to compete in international trade by improvement on planting, maintenance, latex post-harvesting from the garden to the final processing stage.  This research utilizes solid waste from rubber processing factory that is local organic fertilizer (LOF) which is usually merely dumped and become source of environment contaminant.  The objective of this study was to determine the optimum dosage of rubber mill waste to the yield of rubber plants.  The research was carried out at farmer’s plantation of Tanjung Tengah village, Sub-district of Pondok Kelapa, Central Bengkulu, from May to August 2016.  The experiment was arranged in a Randomized Complete Block Design (RCBD) with four replications and 6 levels of LOF as the treatments i.e. 0, 10, 20, 30, 40 and 50 kg tree-1 equal to 0, 5, 10, 15, 20 and 25 tons ha-1, respectively.  The results showed that the effect of several doses of organic fertilizer of rubber waste to rubber plants had no effect on latex volume, stem girth, latex weights, latex slab weight, and dry weight.  The yield of rubber even tended to decrease as the increase of dose of LOF.  This was supposedly because the rubber plant is an annual crop so takes a long time to show the response of the treatment.Keywords: rubber sap, waste, compost fertilizer
Identifikasi Genetik Kultivar Padi Gogo dengan Menggunakan Marka RAPD Simarmata, Marulak; Rustikawati, Rustikawati
Akta Agrosia Vol 18 No 2 (2015)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Fakultas Pertanian, Universitas Bengkkulu

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Abstract

A research was conducted to identify the genetics of upland rice cultivars using random amplified polimorphic DNA (RAPD) markers. Five out of 60 random primers that capable to amplify the most number of markers were OPE-07 (AGATGCAGCC), OPE-15 (ACGCACAACG), OPH-13 (GACGCCACAC), OPH19 (CTGACCAGCC), and OPM-02 (ACAACGCCTC). The number of markers amplified were 5, 6, 8, 8, and 7, respectively. RAPD-PCR using these 5 primers arranged to DNA templates of 41 rice cultivars amplified 1127 RAPD markers. Polymorphic information content (PIC) of each primer were 0.79, 0.80, 0.87, 0.87, and 0.72, respectively. Cluster analysis using a UPGMA dendogram showed that the 41 cultivars were grouped into 9 clusters with genetic similarity index more than 90 percent.
Keragaan Pertumbuhan dan Hasil Enam Belas Genotipe Tomat (Solanum lycopersicum L.) di Dataran Rendah Pardosi, Santi K.; Ruistikawati, Rustikawati; Suryati, Dotti
Akta Agrosia Vol 19 No 2 (2016)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Fakultas Pertanian, Universitas Bengkkulu

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Abstract

Tomato is a high nutritional value fruit vegetables. Genetic variation is valuable plant breeding material which can be measured in terms of yield potential. This study aimed to compare the growth and yield components of 16 tomato genotypes in the lowlands. The experiment was conducted in Medan Baru Experimental Station of, Faculty of Agriculture, University of Bengkulu, with the elevation of 10 m above sea level. This was performed from September 2013 to January 2014. The experiment was set in a completely randomized design with a single factor of 16 tomato genotypes with 3 replications acounting to 48 experimental units, each of which consisted of 2 plants. The sixteen genotypes tested were Mirah, Berlian, CIN 06, SU, Kudamati 3, Lombok 3, Lombok 4, Makassar, Aceh 3, Aceh 5, Ranti Situbondo, Ranti, Situbondo Gelombang, Situbondo, Kemir, Meranti 2, Gondol Lonjong. There were significant differences in plant height, stem diameter, number of leaves, stomatal density, flowering age, harvest age, fruit diameter, fruit sweetness, fruit hardness, total fruit weight, fresh weight, and dry weight. Based on total fruit weight. The genotypes potentially cultivated in the lowlands are Ranti, Situbondo Gelombang, Kudamati 3, Situbondo, and Makassar.
Pertumbuhan dan Hasil Dua Belas Genotipe Kacang Hijau pada Beberapa Dosis Pupuk Kandang Sapi di Lahan Ultisol Andria, Andria; Herison, Catur; Sudjatmiko, Sigit; Dewi, Nurwita
Akta Agrosia Vol 19 No 1 (2016)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Fakultas Pertanian, Universitas Bengkkulu

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Abstract

One major problem of low mungbean production in Indonesia is the lack of high yielding varieties for marginal land. A study was done with an objective to compare growth and yield of twelve mung bean genotypes on ultisol fertilized with several doses of cow manure. Twelve mung bean genotypes were grown in a field under a randomized complete block design arranged in a Split Plot Design with 3 replications. The Main Plots were four doses of cow manure, i.e. 0, 3, 6 or 9 ton.ha-1 and the Sub-Plots were twelve mungbean genotypes, i.e. VR 3, VR 61, VR 88, VR 200, VR 204 K, VR 213 K, VR 266 ct, VR 341, VR 368, VR 601 m, VR 222 Walet and VR 1074 Vinna-1. The result showed that the interaction between cow manure doses and mungbean genotypes was only occured on number of leaf. Genotype VR 61 demonstrated the highest plant stature, the greatest pod number, the heafiest pod and seeds per plant. Increasing dose of cow manure until 9 tons.ha-1did not reach the optimum level for the growth and yield of mungbean genotypes yet, except on the number of leaf variable on genotype VR 3, VR 88, VR 200, VR 266 ct and VR 601.
Optimalisasi PCR-RAPD dan Identifikasi Morfologi Tanaman Kumis Kucing di Provinsi Bengkulu Marulak, Simarmata; Inoriah, Entang; Haquarsum, Eka Jan Virgin
Akta Agrosia Vol 17 No 2 (2014)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Fakultas Pertanian, Universitas Bengkkulu

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Abstract

A research was conducted with objectives to look for the best DNA extraction methods for whisker plants, to optimize random amplified polymorphism DNA-polymerase chain reaction (RAPD-PCR) by testing annealing temperatures and screening random primers, and to identify morphology of these plants in Bengkulu Province. DNA’s extraction followed the protocols of Geneaid and Epicentre kits were conducted for 11 clones of whisker plants. Optimalization of RAPD-PCR was tested by six levels of annealing temperatures and 16 random primers. Morphological identifications were done in 4 locations in Bengkulu Province, i.e. Bengkulu City, Kuro Tidur (North Bengkulu), Kepahiang, dan Air Dingin (Curup)  Results showed that Geneaid demostrated better results as compared with Epicentre.  RAPD-PCR performed optimum at 34.8 oC of annealing temperature; whereas, three random primers showed optimal amplification were I-01, N-01 and P-01, which nucleotide sequences were ACCTGGACAC, CTCACGTTGG, and GTAGCACTCC, respectively.  Meanhile,  no morphological variatons was found among the the samples, except that growths of whisker plants were taller and bigger in Kepahyang and Air Dingin Curup than in others.
Effects of Combined Application of Cow Manure And Inorganic Nitrogen Fertilizer on Growth, Yield and Nitrogen Uptake of Black Rice Marwanto, Marwanto; Nasiroh, Nasiroh; Mucitro, Bambang G.; Handajaningsih, Merakati
Akta Agrosia Vol 21 No 2 (2018)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Fakultas Pertanian, Universitas Bengkkulu

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Abstract

The beneficial effects of manure on soil properties, growth, and crop productivity have promoted its use for replacing the application of N fertilizer. However, it is not well understood to what extent N fertilizer was able to be substituted by cow manure. Accordingly, this pot experiment aimed to compare the effect of inorganic N fertilizer application alone with that of the combined use of inorganic N fertilizer with cow manure based on the same amount of total N on growth parameters, yield attributes, and nitrogen (N) uptake of black rice. The experiment was conducted under a screen house condition in Agriculture Faculty, Bengkulu University located at 15 meters altitude above sea level during the summer season of 2015. There were six treatments viz. T1 = 100% N from urea + 0% N from cow manure (0.52 g N + 0.00 g cow manure) pot-1, T2 = 80% N from urea  + 20% N from cow manure  (0.42 g N + 9.55 g cow manure) pot-1, T3 = 60% N from urea + 40% N from cow manure (0.31 g N  + 19.10 g cow manure) pot-1, T4 = 40% N from urea + 60% N from cow manure (0.21 g N + 28.65 g cow manure) pot-1, T5 = 20% N from urea + 80% N from cow manure (0.10 g N+ 38.20 g cow manure) pot-1, and T6 = 0% N from urea + 100% N from cow manure (0.00 g N  + 47.75 g cow manure) pot-1. The amount of inorganic N fertilizer in the form of urea and cow manure applied was calculated based on the recommended rate of 115.00 kg ha-1 for N fertilizer and 10.50 ton ha-1 for cow manure. These treatments were arranged in a Completely Randomized Design and repeated three times. The results showed that the treatments significantly (P ?0.005) affected growth parameters as measured by plant height, the number of leaves, fresh shoot weight, fresh root weight, dry shoot weight, dry root weight, yield attributes as determined by the total number of tillers, the total number productive tillers, grain yield per pot, and N uptake. The highest values for all these variables were obtained in the treatment receiving recommended rate of urea only (100% N from urea + 0% N from cow manure as equivalence) and the lowest in the treatment receiving a100% N from cow manure (0% N from urea + 100% N from cow manure). However, combined treatments of cow manure and inorganic N fertilizer such as 80% N from urea  + 20% N from cow manure, 60% N from urea + 40% N from cow manure 40% N from urea + 60% N from cow manure showed a parity statistically with the treatment receiving 100% N from urea only in maintaining the values for all these variables. Overall, the combined use of inorganic N fertilizer (urea) and cow manure as an equivalence promoted growth and yield of black rice by improving N uptake. Keywords: integrated nutrient management, soil chemical property, Nitrogen uptake, combined fertilizer application, black rice
Pertumbuhan Vegetatif Seedling Anggrek Dendrobium Woon Leng dengan Menggunakan Berbagai Media Tanam Simamora, Rosanti Sari; Ganevianti, Dwi Wahyuni; Barchia, M. Faiz
Akta Agrosia Vol 18 No 2 (2015)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Fakultas Pertanian, Universitas Bengkkulu

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Abstract

Orchid plant is a plant that absorbs nutrients from the roots is relatively small for the needs of growing media utilization and nitrogen-producing plant species to optimize nutrient absorption. This study aimed to obtain the type of growing media and nitrogen -producing plant species that support the growth ofDendrobium seedlings Woon Leng. This research was conducted at the laboratory, Wire Agronomy, Faculty of Agriculture, University of Bengkulu using Divided Plots Experiment Design ( Split Plot Design ) two factors and four replications. The first factor giving the type of crops that control nitrogen (N0) Leucaena (N1), Wedelia trilobata (N2). The second factor giving the type of planting medium M1 : Charcoal, M2 : The roots of ferns, M3 : coconut fiber, M4 : Litter wood, M5 : Mixed Charcoal + fern roots, M6 : Mixed charcoal + coconut fiber, M7 : Mixed charcoal + wood litter, M8 : Mixed Roots fern + coconut fiber, M9 : Mixed Roots + Litter wood fern , M10 : A mixture of coconut fiber + wood litter. The results showed that administration of the M4 type of growing media (wood litter) M5 (a mixture of wood charcoal + fern root) and M8 (a mixture of coco + fern root) with the administration of nitrogen-producing plant specieslamtoro can improve the total plant weight gain. M1 planting medium (charcoal) with provision of nitrogen producing plant species can lamtoro increase in the number of leaves. Planting medium M4 (litter timber) and M9 medium (mixture of wood fern roots + litter) with wedelia treatment may increase in the number of leaves. Giving lamtoro nitrogen-producing plant species can increase the chlorophyll content of leaves , while the type of planting medium M4 (litter timber) and M9 (a mixture of wood fern roots + litter) gives in the number of leaf stomata.
Growth and Yield Response of Melon to Different Time Application of Goat Manure and Dose of Potassium Handajaningsih, Merakati; Marwanto, Marwanto; Armitasari, Tri; Inoriah, Entang; Pujiwati, Hesti
Akta Agrosia Vol 21 No 1 (2018)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Fakultas Pertanian, Universitas Bengkkulu

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Abstract

Goat manure contains high potassium, thus it is expected to reduce  the usage of synthetic potassium fertilizer. Incubation of goat manure is needed prior to planting since the nutrients are slow release. The objective of the experiment was to find the best time application and dose of potassium on growth and yield of melon. Container experiment using polybags was set in Completely Randomized Design.  Goat manure were incorporated into soil at the time of transplanting (0 DBT), 5 days before transplanting (5 DBT), and 10 DBT. The dose of potassium was consisted of 0 kg/ha, 200 kg/ ha and 400 kg/ha. The treatments were repeated 3 times, each of which consisted of 4 plants. Growth and yield of plants showed no response to the interaction between the two factors of treatment. Single effect of time applicaton of goat manure 10 DBT affected leaf area (1619.51 cm2), fruit weight (872 g), fruit diameter (16.19 cm) and the thickness of edible fruit part (2.61 cm). The dose of potassium 400 kg/ha increased fruit sweetness to 8.20Brix.
Performance of Fifteen F5 Pedigree Upland Rice Lines in Ultisol Luwih, Bagus Edi; Rustikawati, Rustikawati; Hindarto, Kanang Setyo
Akta Agrosia Vol 20 No 2 (2017)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Fakultas Pertanian, Universitas Bengkkulu

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Abstract

ABSTRACTRice (Oryza sativa L.) is a rice-producing crop that is the main food source for most of Indonesia's population. Although rice production increases but needs to be maintained. One of the efforts in maintaining rice production is by assembling superior paddy varieties that are adaptive to Ultisol soil. This study aims to compare the appearance of 15 lines of upland rice grown in Ultisol soil and choose the best lines based on index selection. The research was conducted on August 2015 until January 2016 at New Field Experiment Garden of Agriculture Faculty of Bengkulu University of Kandang Limun Sub-District, Muara Bangkahulu Sub-district, Bengkulu City. The experimental design was Randomized Block Design (RAKL) with 3 replications. As the treatment is 15 lines of rice are G1, G2, G3, G5, G8, G13, G16, G24, G30, G32, G35, G40, G44, G45, and G50. Of the 15 gogo rice strains tested showed that the generative and vegetative variables did not significantly affect the number of leaves, the number of productive tillers, the number of pithy grains per panicle, the weight of the grain per panicle, the weight of 100 grains, and the weight of grain per hill.keywords: upland rice, Ultisol, yield

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