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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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Variabilitas Genetik dan Heritabilitas Pertumbuhan dan Hasil 26 Genotipe Tomat Nilawati, Nilawati; Ganefianti, Dwi Wahyuni; Suryati, D.
Akta Agrosia Vol 20 No 1 (2017)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Fakultas Pertanian, Universitas Bengkkulu

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Abstract

Genetic variability is a measure of the variation in plant performance caused by genetic factors. if the variability of plant character is attributable to genetic roles then the variability will be inherited in the next generation. Heritability is a genetic parameter used to measure the ability of a genotype in plant population to transmit its character. Heritability in a broad sense is defined as the ratio between genotype variance and phenotype variance. This study aimed to estimate the values of genetic variability and heritability of growth and yield of 26 plant genotypes tomato. The experiment was conducted from August to December 2016 in Wirehouse, Faculty of Agriculture, University of Bengkulu. The design used in this study was Randomized Complete Block Design (RCBD) with one factor which were 26 tomato genotypes and were repeated three times. Each plant was observed according to the variability and heritability guidelines for the observation variables. The results showed that the growth component of tomato plants that have wide genetic variability and high heritability of the broad sense was found in the characters of plant height, whereas the yield component were found on fruit diameter , crack fruit, and nonmarketable fruit. Selection of tomato plants should be directed to the characters of plant height, fruit diameter, the number of crack fruit, and non-marketable fruit. Akta
Promoting Tuber Formation In Vitro with Benzyl Amino Purine and Paclobutrazol at Different Concentrations Suharjo, Usman Kris Joko; Hasanudin, Hasanudin; Pamekas, Tunjung; Pujiwati, Hesti; Vanturini, Alyi
Akta Agrosia Vol 22 No 1 (2019)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Fakultas Pertanian, Universitas Bengkkulu

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Abstract

A common problem related to the production of potatoes in Indonesia is the use of poor quality seed sources and declining seeds. Plant tissue culture is one of the best methods used for the provision of quality seeds. This study aims to establish the best combination of BAP concentration and the concentration of paclobutrazol in spurring the growth of cuttings and initiation of potato tubers in vitro.This research was conducted in November 2017 until June 2018 at Agronomy Laboratory of Biotechnology Division and Plant Culture Network of Agriculture Faculty of Bengkulu University. The  research  design  used  was  Completely  Randomized  Design  (CRD)  which  consist  of  18 combination of BAP treatment and Paclobutrazol was repeated 6 times. The concentration of BAP used was 0 mg / l, 5 mg / l, 10 mg / l and the concentration of Paclobutrazol 0 mg / l; 2.5 mg / l; 5 mg / l; 7.5 mg / l; 10 mg / l; 12.5 mg / l. The data of the research were analyzed by F test of 5% level and if there were different between treatments followed by Duncan's Multiple Range Test (DMRT) test of5% level. The results showed that the combination of BAP and  Paclobutrazol concentration had significant effect on all observed variables. Treatment of 5 mg / l BAP and 7.5 mg / l Paclobutrazol is the best medium in inducing potato micro tube as indicated by the fastest tuber formation time, highest percentage of productive crops, largest number of tubers per bottle, number of tubers per productive plant, tuber diameter the largest and highest wet weight of tuber per bottle. Keywords : in vitro, BAP, paclobutrazol, Potato
Penentuan Kadar Garam Kultur Hara untuk Seleksi Toleransi Salinitas pada Padi Lokal Bengkulu Rustikawati, Rustikawati; Simarmata, Marulak; Turmudi, Edhi; Herison, Catur
Akta Agrosia Vol 17 No 2 (2014)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Fakultas Pertanian, Universitas Bengkkulu

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Abstract

Bengkulu province area elevating from 0 m to over 1000 m above sea level possesses high rice germplasm diversity. To obtain salinity controlling gene(s) from those germplasm, it is required to determine a suitableprotocol. This research was objected to determine NaCl concentration to select Bengkulu rice landraces. The standard most salinity tolerant genotype used in this research was ’Kuning’, a local variety usually grown on tidal area of Seluma Regency for generations. The growing media was Yoshida nutrient culture supplemented with a series of NaCl concentration of 0, 2000, 4000, 6000, 8000 or 10000 ppm. Observation was done every 2 days to find out the response pattern of rice seedling growth on different NaCl concentration. NaCl stress level was determined at 90% seedling dead (LC90) at the eighth day. The results showed that the increase of plantheight was deceased at concentration of 6000 ppm. Based on the mathematical equation generated from the percent mortality data distribution, the LC90 was at 3910 ppm NaCl concentration.
Growing Caisim (Brassica juncea L.) Using Elaeisponic Production System Yanda, Yusrian S.O.; Fahrurrozi, Fahrurrozi; Supanjani, Supanjani
Akta Agrosia Vol 21 No 2 (2018)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Fakultas Pertanian, Universitas Bengkkulu

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Abstract

Elaeisponic is new introducing growing technique to produce vegetables by planting it in the frond based of oil palm trees (Elaeis guineensis Jacq.). However, there was no previous report on vegetable production by using elaeisponic production system, including the use of foliar fertilizers. This study aimed to determine the optimum consentrations and frequency of foliar fertilization for caisim grown in elaesisponic production system. An experiment was conducted in oil palm plantation area by using a factorial randomized complete block design with three replicates. The first factor of treatment consisted of three levels of foliar fertilizer concentration, 1 g l-1, 2 g l-1 and 3 g l-1, and the second factor was application frequency of foliar fertilizer, 7 days after transplanting (DAT), 7, 14 DAT and 7, 14, 21 DAT. Crop responses were determined on leaf greenness (SPAD index), shoot fresh weight (g), root fresh weight (g), leaf area (cm2) and plant dry weight.  Results indicated that both concentration of foliar fertilizer and frequency of application as wells as its interaction did not significatly affect leaf greenness, leaf area, shoot fresh weight, root fresh weight and plant dry weight of caisim plants.  Further research should be addressed on optimizing the use of palm oil frond bases as growing medium for vegetable production.  Keywords: Elaeisponic Production System; Brassica juncea L; Foliar Fertilizer; Frequency of Application.
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.?
Hubungan Antar Sifat Jagung Manis yang Dibudidayakan Secara Organik Lorenza, Eviya; Chozin, Mohammad; Setyowati, Nanik
Akta Agrosia Vol 19 No 2 (2016)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Fakultas Pertanian, Universitas Bengkkulu

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Abstract

Capability of growing well under organic conditions is prerequisite for a sweet corn variety to provide high yield under organic cropping management. Therefore, development of high yielding sweet corn varieties for organic cropping system would require sufficient information on the association among the growth traits to facilitate the determination of criteria in the selection program. Objective of this study was to estimate the degree of association among plant growth and developmental traits, in terms of phenotypic and genotypic correlations, in 64 genotypes generated from a complete diallel cross of 8 inbred lines under organic cropping system. Study was conducted from January-March 2016 on Ultisol of Medan Baru, Kandang Limun, sub-district of Muara Bangkahulu, City of Bengkulu at 10 m above sea level. A randomized complete block design with three replications to allocate the genotypes on double row plots with 4 length and 20 cm planting space. No agrochemical inputs was applied in cultural practices. Data were collected for plant height,stem diameter, leaf area, leaf number, tasseling date, and silking date. Analysis of variance was performed to determine the significant variation among the genotype. The degree of association among trait was estimated by both phenotypic and genotypic correlations analysis. Analysis of variance showed significant variation for all observed traits. High phenotypic and genotypic correlations were revealed between the growth traits (plant height, stem diameter, leaf area, and leaf number) and between the developmental traits (tasseling date, and silking date). However, the growth traits showed low correlation to the developmental traits.
Respon Pertumbuhan Stek Anggur (Vitis vinifera L.) terhadap Pemberian Beberapa Konsentrasi Ekstrak Bawang Merah (Allium ascalonicum L.) Utami, Tri; Hermansyah, Hermansyah; Handajaningsih, Merakati
Akta Agrosia Vol 19 No 1 (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 optimum concentration of shallot extract to the growth of grape cuttings grape cuttings. This study was conducted from September to December 2015 in the city of Bengkulu. This research used Completely Randomized Design with a single factor and five replications. Treatment concentrations of 0% (control), shallot extract concentration of 25%, 75% and 100%. The variables measured were the time to sprout, shoot height, the number of leaves, number of roots, fresh weight and dry weight of cuttings. The results showed that the concentration of shallot extract 100% concentration enhances the growth of grape cutting, time to sprout, and the concentration of extract 50% increase shoot height and number of leaves on grape cuttings.
Pengaruh Pupuk Organik Limbah Kelapa Sawit dan Pupuk Anorganik terhadap Pertumbuhan Bibit Kelapa Sawit (Elaeis guineensis Jacq.) pada Pembibitan Utama Hidayat, Kgs Agus Taufik; Saleh, Busri; Hermansyah, Hermansyah
Akta Agrosia Vol 20 No 1 (2017)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Fakultas Pertanian, Universitas Bengkkulu

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Abstract

Palm oil mill waste is one of the biggest problems in palm oil mill development, hence the need for technology to treat the waste in order to be utilized. This study aims to obtain the composition of organic fertilizer solid waste palm oil factory combined with inorganic fertilizer in the main seedling of oil palm, carried out in the nursery garden of PT. Bio Nusantara Teknologi, Kec. Pondok Kelapa, Central Bengkulu District, from January 2016 to April 2016 with a height of 13 meters above sea level, using Completely Randomized Design (RCD), a factor with 4 replications. Dosage of combination Organic Fertilizer (POP) and Inorganic Fertilizer consisting of 6 levels, namely: O0 = 100% Inorganic (50 g / polybag) + 0% Organic (0 g / polybag), O1 = 80% Inorganic (40 g / polybag) + 20% Organic (100 g / polybag), O2 = 60% Inorganic (30 g / polybag) + 40% Organic (200 g / polybag), O3 = 40% Inorganic (20 g / polybag) + 60% Organic (300 g / polybag), O4 = 20% Inorganic (10 g / polybag) + 80% Organic (400 g / polybag), O5 = 0% Inorganic (0 g / polybag) + 100% Organic (500 g / polybag) ). The results showed that the combination of fertilizer treatment was significantly different from the variability of green leaves, the increase of seedlings 12 weeks after planting (MST), stem diameter 12 MST and leaf-breaking time, and not significantly different on the leaves leaf variable 12 MST.Keywords: palm oil waste,  solid organic fertilizer,  inorganic fertilizer,  palm oil nursery 
Growth and Yield Response of Sweet Corn (Zea Mays Saccharata Sturt) on Some Green Manure Tithonia Diversifolia and Dose of Em4 Widodo, Widodo; Sinambela, Anastasia M.L.; Simanihuruk, Bilman W
Akta Agrosia Vol 21 No 2 (2018)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Fakultas Pertanian, Universitas Bengkkulu

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Abstract

Soil fertility decline as a result of the use of inorganic fertilizers. Tithonia diversifolia is an green manure and EM4 is a mixture of beneficial microorganisms.  Application of Tithonia and EM4 on sweet corn is an effort to replace the use of inorganic fertilizers. This study aims to obtain the interaction in application of Tithonia and EM4, to compare at different doses of green manure Tithonia, and  to compare on the application of multiple doses of different EM4.  Completely Randomized Block Design is used which consist of two factors. The first factor is the dose of  Tithonia consisting of: 0 tons ha-1, 10 tons ha-1, 20 tons ha-1 and 30 ton ha-1.  The second factor is the dose EM4 comprising: 0 ml L-1, 10 ml L-1 and 20 ml L-1 of water. The results showed that Tithonia diversifolia and EM4 have no effect on the growth and yield of sweet corn. Tithonia diversifolia of 30 tons ha-1 provide the highest plant height and the highest number of leaves and and the largest stem diameter and the highest level of leaf greenish. There is a tendency on the ascending EM4 dosage, will increase the average plant height, leaf number, stem diameter and leaf greenish level. Keywords:Tithonia, EM4, sweet corn. 
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.

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