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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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Growth and Yield Response of Bambara Groundnuts (Vigna subterranea L ) to the Mixed of Peat and Mineral Soil with Several Dosage of Dolomite Pamungkas, Inggi; Turmudi, Edhi; 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

Bambara groundnut (Bogor groundnut) was an alternative food crops having high nourishing, better taste and bigger size nut than the soy beans and peanuts. To meet the need for food and industrial needs, the program to increase production of Bogor groundnut was required, one of which is the use of peat as a growing medium using the technology of mixing peat and mineral soil. The research objective was to obtain a mixture of peat with mineral soil and dolomite lime dose suitable for the highest growth and yield of Bogor groundnut.  This study was conducted in May 2015-September 2015 in the Greenhouses of Faculty of Agriculture, University of Bengkulu. The experiment was arranged in a completely slot deposit 5000 randomized design (CRD) with two treatment factors and three replications. The first factor was soil mix of peat and mineral soil (G0: 100% peat + 0% mineral soil; G1: 75% peat + 25% mineral soil; G2: 50% peat + 50% mineral soil; G3: 25% peat + 75% mineral soil) and the second factor was the dose of dolomite (D0: without lime dolomite; D1: 3 ton ha-1 and D2: 4 ton ha-1). The results showed that the response of biomass dry-weight to a mixture of peat with mineral soil was influenced by the dose of dolomite, but there was no interaction on other variables.  Treatment of a mixture of peat 100% alone was capable of generating the highest number of leaf, biomass fresh- and dry-weight.  Bogor groundnut plants showed the same response to the dose variation of dolomite lime. Keywords: Bogor groundnut, peat, mineral, dolomite   
Kajian Pertumbuhan dan Hasil Cabai Rawit terhadap Berbagai Dosis Pupuk Hayati dan Konsentrasi Indol Acetic Acid (IAA) Simanjuntak, Ls Hari Candra; Harsono, P.; Hasanudin, Hasanudin
Akta Agrosia Vol 20 No 1 (2017)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Fakultas Pertanian, Universitas Bengkkulu

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Abstract

Cultivation of cayenne pepper is still much dependent on the use of inorganic fertilizers on a large scale with a high dose. Optimizing the use of inorganic fertilizers needs to be done so that the cost of chili farming can be minimized and more environmentally friendly. Optimization of cayenne pepper cultivation can be done through intensification efforts that is through the addition of biological fertilizers and IAA growth regulators. It is necessary to study the use of biological fertilizer and IAA on the growth and yield of cayenne pepper. The objective of this research is to get the optimum dosage of biofertilizer and IAA concentration for growth and yield of cayenne pepper. This research was conducted from September to January 2016. This study used Completely Randomized Design (RAL) with two factors. The first factor was biological fertilizer consisting of: B0 (without biological fertilizer), B1 (2 g per polybag), B2 (4 g per polybag), B3 (6 g per polybag) and second factor ie IAA spray concentration: without IAA), I1 (2 mgL -1), I2 (4 mgL-1), I3 (6 mgL-1) were repeated four times to obtain 64 experimental units. The results showed that biological fertilizer treatment significantly affect the leaves leaf variation with the optimum dosage of biomass fertilizer that is 2.29 g per plant produces leaf area 5.59 cm2. Furthermore very significant effect on fruit weight variables with increased dosage of 2 g can increase the weight of chili pepper fruit. While the interaction of dosage of biological fertilizer and IAA concentration did not significantly affect each observation variables.
Different Compost Materials Used as Source of Organic Matter in Production of Chili Pepper Sumbayak, Roy S.O.; Handajaningsih, Merakati; Hartal, Hartal; Marwanto, Marwanto
Akta Agrosia Vol 22 No 1 (2019)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Fakultas Pertanian, Universitas Bengkkulu

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Abstract

Compost has been commonly used as the primary organic matter in organic plant production, especially in vegetable production.  Different sources of compost materials give different medium structures and chemical characteristics. The objectives of this research were: 1) to evaluate the response of growth and yield of chili pepper to a rate of compost and source of animal waste which were used as compost; 2) to determine the optimum rate of fertilizer for the highest growth and yield of chili pepper. The research was carried out from November 2015 until March 2016. Compost material treatments consisted of cow dung, empty palm oil bunches, and mixed of vegetable residue and weeds. The compost rate treatments consisted of 0 ton ha-1, 10 ton ha-1, 20 ton ha-1, and 30 ton ha-1. No interaction between the two treatments was found to influence plant growth and yield variables.   The type of compost materials affected plant height of 5, 6, and7 weeks after transplanting.  Cow dung as a source of compost showed the best effect in increasing chili plant height.  Plant height, the number of plant dichotomous, and plant canopy responded linearly  to the increase of the compost rate. The usage of compost at 20 ton ha-1 and 30 ha-1 resulted in higher fruit length, the number of fruit, and fruit weight per plant.   Keywords: chili pepper, compost, organic, growth, yield 
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.
Responses of six tomato (Lycopersicon esculentum Mill.) genotypes to salinity stress at low altitudes of Bengkulu, Indonesia Suharjo, Usman KJ; Nababan, Sartika Y; Masdar, Masdar; Pamekas, Tunjung; Mukhtasar, Mukhtasar
Akta Agrosia Vol 21 No 1 (2018)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Fakultas Pertanian, Universitas Bengkkulu

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Abstract

Salinity stress causing water deficit, nutrient deficiency, and ion imbalance for the crops has been reported to reduced crop growth, crop yield, and fruit quality in tomatoes. The main objective of this research were to determine the LC-50 of salinity, to evalute the response of six tomato genotypes to LC-50, and to study the effect of genotype and salinity stress on crop growth, crop yield, and fruit quality of tomatoes. The LC-50 of salinity was determinated by growing tomato seedlings at different level of saline solutions (0, 400, 500, 6000, 7000, 9000, 10000, 11000, and 12000 ppm of NaCl) and used the LC-50 of salinity to evaluate the salinity tolerance of six tomato genotypes. The results showed that the LC-50 of saline solution was 9000 ppm NaCl and genotype Empat G was found to be the most tolerant to salinity stress
Pertumbuhan dan Produktivitas Jagung Manis pada Beberapa Sistem Tanam Wentasari, Risa
Akta Agrosia Vol 19 No 2 (2016)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Fakultas Pertanian, Universitas Bengkkulu

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Abstract

The purpose of this study was to determine the growth and productivity of sweet corn on a Single Row, Double Row, Row Twins and Twins Seed planting system. This study was conducted in an experimental garden of Politeknik Negeri Lampung, Hajimena South Lampung, in July-September, 2015. This study is based on randomized block design with one factor cropping system consists of 4 treatment ie : Single Row (SR) (20cm x 75cm), Double Row (DR) (20cm x 20cm x 80 cm), Twins Row (TR) (20cm x 10cm x 80 cm) , and TwinsSeed (TS) with plant spacing (40cm x 75cm two seed in one planting hole). Parameter observational studies high plants (cm), leaf number (cm), diameter (cm), lebar daun (cm) and long leaf (cm) and productivity  (ton/ ha). The data were analyzed using the F test at  1 % and 5 % level and than followed by test BNT.  The conclusion of this study were (1) planting system gives a response was not significantly different in stem diameter and leaf length, the difference is shown in plant height, number of leaves and leaf width, 2) There is a significant differences in the productivity cropping systems. Twins Row cropping systems have different productivity with a Single Row planting system, Double Row, Twins Seed and (3) Average Twins Seed planting system showed the highest productivity of 39.42 ton/ha.
Ragam Genetik dan Heritabilitas Peubah Kualitatif dan Peubah Kuantitatif Dua Puluh Genotipe Cabai (Capsicum annuum L.) Lasmiana, Lasmiana; Ganefianti, Dwi Wahyuni; Alnopri, Alnopri
Akta Agrosia Vol 19 No 1 (2016)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Fakultas Pertanian, Universitas Bengkkulu

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Abstract

Chili development in Indonesia faces several constraints, mainly low yields and disease incidents.  The improvement of chili traits through breeding programs requires information of genetic diversity, heritability,  genetic advance and gene role. A study was conducted to assess the values of variability and heritability of qualitative and quantitative traits of 20 genotypes of chilli plants. The study was conducted in May-September 2015 on Experimental Field of Faculty of Agriculture, the University of Bengkulu. The 20 chili genotypes were arranged factorially in a Randomized Complete Block Design, with three replications. The results showed that the qualitative characters that have broad sense of variability and heritability were plant height, days to flower, time to harvest, fruit length, fruit diameter, fruit weight, and weight of fruit per plant, indicating that a selection can be done on those variables. Variability on qualitative characters was found on the position of the flower stalk (3 kinds), corolla color (4 kinds), color of corolla holder (3 kinds), corolla shapes (2 kinds), anther colors (4 kinds), pistil colors (3 kinds), colors of young fruit and ripe fruit (3 kinds), and fruit position (3 kinds).
Respon Bibit Salak Terhadap Pemberian Pupuk Daun Daulay, Lalan Darham; Fahrurrozi, Fahrurrozi; Mukhtasar, Mukhtasar
Akta Agrosia Vol 17 No 2 (2014)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Fakultas Pertanian, Universitas Bengkkulu

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Abstract

The availability of high rate of transplanting succes is very important for early growth of snakefruit. An experiment aimed to identify both optimal concentration and frequency of foliar fertilizer application on growthof snakefruit during nursery. The experiment was conducted in Pondok Kelapa, Bengkulu Tengah, from August to October 2008. Concentration and frequency treatments were arranged in a Split Plot base on a Randomized Complete Block Design. Spraying frequency (weekly, two-weekly or three-weekly) were used as the main plot;whereas, concentration of liquid nutrient Hyponex Merah with composition of 25:5:20-N:P:K, consisted of 0, 2, 4 and 6 g L-1 water, was the sub-plot Results demonstrated that concentration of liquid nutrient significantlyaffected seedling growth with optimum concentration for plant height was 4.6 g L-1, the greatest leaf number was 39 g L-1, the largest leaf area was 4.1 g L-1, the greatest stomata number was 4.2 g L-1, the greatest chlorophyl content was 3.9 g L-1 and seedling dry weight was 4.6 g L-1. Both frequency and its combination with concentration of foliar fertilizer had no significant effects on the growth snake fruit seedlings
Morphological Characterization of 10 Hot Pepper Genotipes in Low Altitude Location Herison, Catur; Surmaini, Ervi; Rustikawati, Rustikawati; Yulian, Yulian
Akta Agrosia Vol 21 No 2 (2018)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Fakultas Pertanian, Universitas Bengkkulu

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Abstract

Development of high yielding and superior cultivars requires information on characteristic of germplasm will be used. Ten curly-type hot pepper genotypes was grown in a completely randomized design with three replication in a low altitude land to determine their morphological characters and to evaluate genetic relationship among them based on their morphological similarities. The study was conducted in September 2015 until January 2016 in Medan Baru experimental station of Faculty of Agriculture, 15 m above sea level.  Observation was conducted on both quantitative and qualitative characters.  The results showed that there were not significantly diferent (?=5%) for plant habitus, leaf shape, leaf tip, leaf edge, leaf shape and seed shape.  Whereas for quantitative variables of stem diameter, number of fruits per plants and fruit length were significantly different, while for the other variables were not.  Cluster analysis with phylogenetic trees in 58% similarity coefficient resulted that the genotypes grouped in to six groups.  Group I consisted of genotype LPK and Ferosa, group II Mario, group III was genotype Laris, group IV consisted of genotype Kopay and Romario, group V KH and L Curup, and group VI included genotype Bogota and Sempurna. The Kopay and Romario genotypes have the closest relationship level of 73%, while Local Payakumbuh and Lokal Curup have the farrest relationship with the coefficient of 35%. From the results of the study it can be concluded that Local Payakumbuh and Local genotypes Curup can be used as parents with the highest probability to have high transgresive segregation or highest hybrid vigor. Keywords: morphological characterization, genetic relationship, curly hot pepper
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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