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Merakati Handajaningsih
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Dept of Crop Production Faculty of Agriculture, University of Bengkulu WR Supratman St. Kandang Limun, Bengkulu 38371
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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 10 Documents
 1 
Search results for , issue "Vol 18 No 2 (2015)" : 10 Documents clear
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. 
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.
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.
Keragaan Stek Pucuk Syzygium oleina terhadap Pemberian Zat Pengatur Tumbuh Rootone-F dan Komposisi Media Tanam Deselina, Deselina; Hidayat, M. Fajrin; Wiratama, Ganesya
Akta Agrosia Vol 18 No 2 (2015)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Fakultas Pertanian, Universitas Bengkkulu

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Abstract

This study aims to determine the concentration of plant growth regulator combination Rootone F and a growing medium that provides the best growth of Pucuk Merah shoot cuttage. The research was conducted on the July to September 2013. The method used is Complete Random Design (RAL) factorial consisting of two factors. The first factor is the concentration of plant growth regulators Rootone-F (R), which consists of four levels: 0 ppm (control), 100 ppm (R1), 150 ppm (R2) and 200 ppm (R3). The second factor is the composition of the growing medium consists of: ground (M1), soil, sand (1: 1) (M2), soil: sand: compost (1: 1: 1) (M3). The variables measured were successful life cuttage, leaf number, root length, number of secondary roots and dry weight of cuttings and environmental factors (temperature and humidity). Results of analysis of variance showed that the concentration of plant growth regulators Rootone-F only real impact on the number of secondary roots while growing medium treatment showed no real effect on all observed variables. Combination treatment of concentration of growth regulators Rootone-F and planting media show no real effect on all observed variables. The ambient ttemperature during the study was C 27.85-30.47 and humidity 93.48-96.32%. Based on the results of analysis show that the combined treatment P2M2 gives the average percentage of success alive and rooted cuttings highest 73.3%, number of leaves 2 strands, 4.07 cm root length, 2 number of secondary roots and root dry weight 0.56 g.?
Pertumbuhan Gulma Padi Sawah pada Berbagai Takaran Alelokimia Kulit Buah Jengkol [Pithecellobium Jiringa (Jack) Prain Ex King] Nurjanah, Uswatun; Yudono, P.; Suyono, A.T; Shieddiq, Dja’far
Akta Agrosia Vol 18 No 2 (2015)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Fakultas Pertanian, Universitas Bengkkulu

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Abstract

Jiringa hulls contained phenolic compound, alcaloide, steroide, and flavonoide. Phenolic compound could inhibit the growth of emergence of rice. This study was aimed evaluate effect of dosage jiringa hulls application in supressing weed growth and promoting rice growth and yield. The treatment were weed free, weedy, hand weeding at 21 and 42 dap, jeringa hulls application of 5, 10, and 15 ton ha-1. Result showed that jeringa hulls aplication of 10 and 15 ton ha-1 can subtituted hand weeding at 21 and 42 dap and can suppresed broad leafed and narrow leafed weed at 6 and 9 wap compared to weedy, respectively. Highest suppressed as 90% if jiringa hulls was aplication at 15 ton ha-1.
Induksi Kalus dan Regenerasi Tanaman pada Kultur Antera Persilangan Padi Indica Varietas Lokal Bengkulu Herawati, Reny; Rustikawati, Rustikawati; Inoriyah, Entang
Akta Agrosia Vol 18 No 2 (2015)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Fakultas Pertanian, Universitas Bengkkulu

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Abstract

Establishment of homozygous lines can be accelerated with anther culture technique that can produce pure lines in one generation. Formation of spontaneous double haploid plants in rice anther culture is very beneficial, because it does not need to be doubled haploid plants as material selection.This study aims to obtain a doubled haploid lines of upland rice is tolerant to drought and blast disease resistance. The main ingredient in this research is anther crosses of rice plants (F1), which consists of local varieties with selected lines of P1 (Sriwijaya x IR-148), P2 (Sriwijaya x IR-7858-1), P3 (Bugis x IR -148), and P4 (Bugis x IR-7858-1), callus induction media (N6), regeneration medium (MS). Anther culture of local varieties of rice indica/indica produced callus induction and plant regeneration are low, resulting in low efficiency of anther culture in providing green plants. The use of donor parents indica/j aponica which is responsive to anther culture into consideration for the material F1 crosses. Anther inoculation needs to be done in several stages so that the opportunity to obtain plantlets in sufficient quantities for material selection will be greater.
Keragaman Genetik, Heritabilitas dan Korelasi Antar Karakter Tanaman Tomat di Dataran Rendah Saputra, Helfi Eka; Syukur, Muhamad; Aisyah, Syarifah Iis
Akta Agrosia Vol 18 No 2 (2015)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Fakultas Pertanian, Universitas Bengkkulu

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Abstract

The main problem in the cultivation of tomato plants in Indonesia are not available varieties of potentially high yield, good fruit quality and can adapt well to the low altitude. Therefore, the assembly of superior varieties of tomatoes low altitude are needed. Research objective is to determine the genetic diversity, heritability and determine the relationship between the characters for the assembly of tomato varieties are high yielding lowland. The experiments were performed using the Randomized Complete Block Design the single factor that genotype by 20 with three replications. The results showed there are six characters that have a broad genetic diversity and high heritability, namely plant height, leaf length and width, number of fruits per plant, fruit length and width. Correlation analysis between characters indicate the number of fruits per plant suitable for use as a character selection for yield potential. Number of fruits per plant of the highest owned by IPB T23. Fruit weight per plant of the highest owned by IPB T 1.
Potensi Produksi Enam Hibrida Jagung pada Ultisol di Provinsi Bengkulu Suprijono, Eko; Rustikawati, Rustikawati; Romeida, Atra; Gustian, Meko
Akta Agrosia Vol 18 No 2 (2015)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Fakultas Pertanian, Universitas Bengkkulu

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Abstract

Ultisol is one of marginal land type quite extensively presence in Indonesia, including the province of Bengkulu. The use of varieties tolerance to acidity stress is the best manner to utilize of this type of land with relatively low cost and environmentally friendly. The objective of this research was to evaluate theyield potential of six maize hybrids developed to soil acidity tolerance. The experiment was conducted at the Experimental Farm Medan Baru, Kandang Limun Village, Muara Bangkahulu District, Bengkulu City, from August to November 2015. The experiment was arranged in a randomized completely block design with four replications. As the treatment were newly developed maize hybrids, namely CT5, CT8, CT9, CT13, CT14 and CT15. The variables measured were cob length, cob diameter, 100-seed weight and the estimated yield/ha. Qualitative variables supporting to corn yield were the cob position, seed color, seed type and seed row arrangement. The results indicated that the hybrid CT8 showed the highest estimated yield in Ultisol among hybrids evaluated, with the estimation of 6.5 tons per hectare. Qualitatively, theseeds of hybrid CT8 were a horse tooth type, pale yellow color, and stright line arrangement.
Penampilan Morfologis Galur-Galur Harapan Kedelai Hasil Persilangan Varietas Malabar dan Kipas Putih Nugroho, Amin; Suryati, Dotti; Chozin, Mohammad
Akta Agrosia Vol 18 No 2 (2015)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Fakultas Pertanian, Universitas Bengkkulu

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Abstract

The increasing demand for soybean is driven by population growth and development of industry. The current import of soybean should be considered as pragmatic solution to fill the gap between supply and demand. In the long term, the domestic production of soybean has to be increased to minimize the dependency on imported soybean. As part of soybean breeding program for yield improvement, this study was undertaken to evaluate the performances of five elite lines (11 AB, 13 ED, 14 DD, 19 BE, and 25 EC) derived from cross of Malabar and Kipas Putih as compared to their parental varieties and Tanggamus (commercial variety). The evaluation was set up in a completely randomized block design with three replications. Significant variations among the genotypes were found on plant height, flowering date, number of fertile node, hundred seed weight, plant biomass, and protein and lipid contents, but not on number of productive branch, maturity date, pod number, yield per plant, and yield per plot. In most cases, the evaluated lines had intermediary performances between their parental varieties, although some lines produced earlier flowering, larger seed, higher protein content, and lower lipid content. 11 AB exhibited a superiority over its parental and Tanggamus in term of plant biomass and protein content.
Peningkatan Adaptibilitas Gembili (Dioscorea esculenta L.) pada Lahan Pesisir dengan Penambahan Pupuk Amonium Sulfat (ZA) dan Mulsa Organik Herison, Catur; Turmudi, Edhi; Handayaningsih, Merakati; Dewi, Kurnia Herlina
Akta Agrosia Vol 18 No 2 (2015)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Fakultas Pertanian, Universitas Bengkkulu

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Abstract

Increasing plant capability to adapt on coastal land is very important aspect in the development alternative carbohydrate source food. The objective of this research is to determine the effect of ZA fertilizer and organic mulch on lesser yam’s adaptability based on its growth and yield. The experiment was conducted with a randomized completely block design arranged in a split plot with 3 replications. As the Main Plot were organic mulch levels, and as the Sub Plot were ZA fertilizer doses. The results showed that there was no interaction effect between ZA fertilizer and organic mulch on either growth or yield of lesser yam. Application of ZA fertilizer up to 200 kg ha improve lesser yam’s adaptability based on their vegetative growth. Organic mulch of rice paddy straw up to the rate of 20 ton ha-1 did not increase growth and yield of lesser yam in coastal sandy land.

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