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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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Growth and Yield of Lettuce (Lactuca sativa L.) by Giving Cow Manure and Empty Palm Oil Bunch Fertilizer on Peat Soil Manullang, Yedija; Herawati, Reny; Handajaningsih, Merakati; Ganefianti, Dwi Wahyuni; Haquarsum, Eka J.V.; Sutrawati, Mimi
Akta Agrosia Vol 23 No 2 (2020)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Fakultas Pertanian, Universitas Bengkkulu

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Abstract

Lettuce (Lactuca sativa L.) is a horticultural plant that is beneficial for health. Efforts are being made to expand the plant area. One of them is by utilizing marginal land such as peatlands.  Peatlands in Indonesia are the most extensive soils in various tropical countries in the world that have low soil fertility and high acidity so that they are not optimal for lettuce growth. The provision of organic material can increase soil fertility by improving physical, chemical, and biological soil properties so that it can support lettuce growth. This study aims to determine the dose of cow manure and the dosage of oil palm empty fruit bunch fertilizer and the optimal dose interaction for growth and yield of lettuce. This research was conducted from June 2019 to August 2019 in Bengkulu City. This study uses a Completely Randomized Design consisting of two factors, which are repeated three times. The first factor is the dose of cow manure with three levels, namely: 0 tons ha-1, 15 tons ha-1, and 30 tons ha-1. The second factor is the dose of oil palm empty fruit bunch fertilizer, which consists of four levels, namely 0 tons ha-1, 5 tons ha-1, 10 tons ha-1, and 15 tons ha-1. The results showed that the dosage of cow manure 15 tons ha-1 and without the application of empty fruit bunches fertilizer gave the best results in leaf length of 18.674 cm. The best dose of cow manure for growth and yield of lettuce is 15 ha-1. The application of OPEFB fertilizer has not been shown to affect the growth and yield of lettuce.
Liquid Tobacco Smoke Concentration Test Against the Intensity of Stem Borer (Chilo saccharipagus) Attack on Sugar Cane Roeswitawati, Dyah; Nidya, Nindy; Indratmi, Dian; Prabowo, Heri
Akta Agrosia Vol 23 No 2 (2020)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Fakultas Pertanian, Universitas Bengkkulu

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Abstract

QQVIP303 merupakan platform perjudian online yang terkenal dengan beragam permainan menarik. Untuk mulai bermain, pengguna harus melakukan QQVIP303 login melalui link resmi yang disediakan. Dengan sistem keamanan terbaik, QQVIP303 menjamin privasi dan keamanan data para pemain. Bermain di QQVIP303 juga memberikan kesempatan untuk meraih keuntungan besar melalui berbagai jenis permainan. Tersedia berbagai qqvip303 link alternatif untuk QQVIP303 agar para pemain dapat mengakses platform tersebut dengan mudah dan lancar. Jadi, jangan ragu untuk bergabung dengan QQVIP303 dan rasakan pengalaman berjudi online yang seru dan menguntungkan
Response of Shallots of Batu Ijo Variety on Doses of N And K Fertilizers Widodo, Widodo; Marlin, Marlin; Sitio, Nancy B.
Akta Agrosia Vol 24 No 1 (2021)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Fakultas Pertanian, Universitas Bengkkulu

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Abstract

Shallots (Allium cepa var. Aggregatum L) have many varieties that can be grown in the highlands and lowlands and one of them is the Batu Ijo variety. Nutrients N and K play an important role for plant needs. This research was conducted from March to June 2019 in Medan Baru, Bengkulu City. This study used a completely randomized design with two factors. The first factor was the dose of N fertilizer and the second factor was the application of K fertilizer. The application of N fertilizer had a significant effect on the number of shallots at week 2. The Urea dose given decreases the number of spring onions. For the best treatment at plant height is the treatment of Urea 300 kg/ha and KCl 50 kg/ha. Plant growth from week 2 to 5 increased significantly. The application of K fertilizer has an effect on the number of shallots at week 2 and the number of tubers. The higher the plant age, the more the number of leaves produced, but at higher doses, the number of leaves and the number of tubers decreased. The best treatment for the number of leaves produced was Urea 300 kg/ha and without giving KCl. For the best treatment of fresh plant weight, namely Urea 300 kg/ha and KCl 150 kg/ha, the best treatment fresh tuber weight was Urea 300 kg/ha and KCl 150 kg/ha, for tuber diameter the best treatment was 200 kg/ha of urea and KCl 100 kg/ha and for the number of tubers of Urea 0 kg/ha and KCl 150 kg/ha.Keywords: shallots, N fertilizer, K fertilizer
Tolerance of 20 heirloom rice varieties at seedling stage salinity stressed and their growth in lowland coastal area Rustikawati, Rustikawati; Herison, Catur; Chozin, Muhammad; Indres, Indres
Akta Agrosia Vol 23 No 2 (2020)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Fakultas Pertanian, Universitas Bengkkulu

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Abstract

Coastal area of Bengkulu Province is home of many heirloom rice varieties and play an important role in contributing rice production in the province. However, as the climate change proceeds, a progressive sea water inundation has increased soil salinity mainly in low-lying areas and jeopardizing the sustainability of rice production in coastal regions.  The use of salt-tolerant varieties, therefore, would be a sensible solution to alleviate the adverse effect of soil salinity in respect of maintaining the crop production in the coastal areas. The objective of this study was to examine the salinity tolerance of 20 heirloom rice varieties collected from a coastal area of Bengkulu Province.  Prior to the screening process, lethal concentration 90 (LC90) was determined by assaying the seedlings of ‘Kuning Tinggi’ in a series of nutrient solution containing a different concentration of NaCl (0, 2000, 4000, 6000, 8000 and 10000 ppm). Using a regression analysis, LC90 was detected at a concentration of 3910 ppm. The screening was performed by exposing the varieties in the nutrient solution culture containing 4000 ppm NaCl and growing them on the tidal swamp. Under nutrient culture evaluation, the symptom of NaCl toxicity was scored and converted to salinity tolerance index. ‘Humbur’, ‘Kuning Tinggi’ and ‘Padang Bakung’ exhibited medium tolerant, while ‘Beram’, ‘Imperata’ and ‘Kuning’ exhibited very sensitive. Further evaluation of the tidal swamp for vegetative and generative performances signified that ‘Humbur’ and ‘Kuning Tinggi’ had medium tolerant to salinity stress
Host Diversity of Beauveria bassiana (Balsamo) Vuillemin in Rice Field in Bolaang Mongondow Regency Siahaan, Parluhutan; Saroyo, Saroyo; Langoy, Marnix L.D.; Saimima, Arie J.
Akta Agrosia Vol 24 No 2 (2021)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Fakultas Pertanian, Universitas Bengkkulu

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Abstract

Beauveria bassiana can attack a variety of hosts and their virulence can vary at each host and location. Exploration of the diversity of hosts B. bassiana from local isolates needs to be done as initial information that can explain the ability of B. bassiana in infecting insects. Sampling locations were selected in three district, each district selected three stations and each station consisted of 10 plots. The location of sampling is determined by the purposive random sampling method. Each station was made a plot measuring 1m x 1m and distributed randomly. Every insect infected with B. bassiana was taken and taken to a laboratory for identification. The results showed that there were five insects that hosted B. bassiana, namely Nilaparvata lugens, Scotinophara coarctata, Leptocorisa oratorius, Nezara viridula and Paraeucosmetus pallicornis. The highest host diversity index was found in North Dumoga with a value of 1.47. The highest abundance index was found in N. lugens host in East Dumoga with a value of 43%. The highest density was found in the host N. lugens in Central Dumoga with a value of 1.93 ind / m2. There were indications of differences in virulence of the  B. bassiana local isolates that were influenced by the spesies of host and location Keywords: Beauveria bassiana, diversity,  Bolaang Mogondow Regency, diversity and abundance indices
Biodiversity And Arthropod Abundance In Organic Semi Rice In Swamp Lowland in Palangka Raya City Manaf, Melhanah; Mulyani, Rahmawati Budi; Satrio, Mario
Akta Agrosia Vol 24 No 2 (2021)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Fakultas Pertanian, Universitas Bengkkulu

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Abstract

Palangka Raya has the potential for swamp lowland to be used for rice farming. For this purpose, knowledge of arthropod biodiversity is required. The study aims to determine the biodiversity and abundance of arthropods and arthropods dominant in semi-organic rice plantations in swamp lowlands. The study was conducted from September to November 2019 in Palangka Raya City. The study was carried out on 1.148m2 farmer's paddy fields. The land is divided into three trial plots, each measuring 28x13 m2. Observations were made at the age of 8-15 WAP. Samples were taken using a net trap (Sweep net). Arthropod biodiversity was analyzed using the Shannon-Weaver diversity index (H'). The results showed that in the semi-organic rice ecosystem were obtained 10 orders, 58 families with a total of 8973 individuals, consisting of pests 92.61%, predators 6.59%, parasitoids 0.28%, pollinators 0.06%, Detrivore 0.35%, and 0.07% neutral insects. Diversity index (H') is low to moderate (0.10-2.19), dominance index (C) is in the low to high (0.18-0.97); Evenness index shows that the community is depressed until unstable (0.04-0.67); and The abundance index on the criteria of less to very much (8.96-25.03). The dominant arthropods are dominated by the Rice bug (Leptocorisa acuta).
Effectiveness of Indigenous Rhizobacteria Formulations in Increasing the Growth and Yield of Shallots (Allium ascalonicum L.) Sutariati, Gusti Ayu Kade; Madiki, Abdul; Hariani, Ni Kadek Dwi; Mudi, La; Khaeruni, Andi; Wibawa, Gusti Ngurah Adi; Afa, Musadia
Akta Agrosia Vol 24 No 2 (2021)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Fakultas Pertanian, Universitas Bengkkulu

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Abstract

The use of beneficial microbes in increasing plant growth and yield is a very appropriate choice to reduce synthetic chemicals that can cause negative impacts on the environment. The purpose of this study was to evaluate the effectiveness of post-save formulations of Wakatobi indigenous rhizobacteria in increasing the growth and yield of shallots. The study was conducted in Jati Bali Village, Konawe Selatan District, using a Randomized Block Design, consisting of 10 rhizobacterial formulation treatments, a combination of three types of biological agents, namely Pseudomonas sp. LP03, Pseudomonas sp. TWB02 and Pseudomonas sp. TWB11, and three types of formulation materials: ground brick powder, ground burned rice husk powder, and bentonite; one control using NaCl 0.85%. The experiment was repeated three times so that there were 360 treatment units. The results showed that of the three types of rhizobacteria tested, only Pseudomonas sp. TWB02 and Pseudomonas sp. LP03 can display better performance in increasing the growth and yield of shallots. These rhizobacteria are more compatible using the ground burned rice-husk powder formulation. Increased shallot yield (tuber fresh weight) in seed treatment using Pseudomonas sp. TWB02 and Pseudomonas sp. LP03 in the formulation of ground burned rice-husk powder reached 121% and 117% compared to controls. Further research needs to be done on a broader scale and different environmental conditions to see the stability of these biological agents' effects on the growth and yield of shallots.
Characteristics of fungi contaminant in tissue culture of Bromheadia finlaysoniana (Lind.) Miq Andriani, Desta Desta; Heriansyah, Pebra
Akta Agrosia Vol 24 No 2 (2021)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Fakultas Pertanian, Universitas Bengkkulu

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Abstract

Generative propagation of orchid plants has problems because orchid seeds do not have endosperm that need to be multiplied using tissue culture. Contamination is a limiting factor in the multiplication of plants in tissue culture. This study describes the types of contaminants found in Bromheadia finlaysoniana callus. This research was carried out in two stages. The first stage is carried out culture of various explants of Bromheadia finlaysoniana using murashige and Skoog media with enrichment of hormone Benzylaminopurine 1 mg/l; (Naphthalene acetic acid) 0.5 mg/l; 100 mg mynositol; pyridoxine-HCl 0.5 mg/l; thiamine-HCl 0.1 mg/l; nicotinic-acid 0.5 mg/l; glycine 2 mg/l. The second stage is observed and the percentage of contaminant fungi. The observed contaminants character includes the colour, the direction of growth, and the hyphae colony's shape. Determination of contaminants type compared to the morphology of references. The result is the highest contamination in flower stalk explants, 81%; most colonies on leaf explants are 28. Contaminant fungi grow predominantly of fungi with white and grey colour and a rough surface shape. The macroscopic character of contaminant fungi in tissue cultures mostly comes from the class of Deuteromycetes and Zygomycetes.Keywords: Bromheadia finlaysoniana ,  contaminant, fungi, tissue culture
The Effectiveness of The Form And Method of Giving Solid Organic Fertilizer to The Growth and Yield of Sweet Corn (Zea mays saccharata Sturt) in Inceptisols Simanihuruk, Bilman Wilman; Anugerah, Ade; Gusmara, Herry
Akta Agrosia Vol 24 No 2 (2021)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Fakultas Pertanian, Universitas Bengkkulu

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Abstract

This study aims to obtain a combination of organic fertilizers and the method of giving solid organic fertilizer to the growth and yield of sweet corn. The research was conducted from March to May 2019 in Karang Dapo Village, Bingin Kuning District, Lebong Regency, Bengkulu Province. This study used a Complete Randomized Block Design (RCBD) with one factor and three replications, consisting of 11 combinations namely control, solid organic fertilizer (SOF) dose of 2,5 tons ha-1 by localized placement,  5 tons ha-1 by localized placement, Petroganic 500 kg ha-1 by localized placement, Petroganic 1000 kg ha-1 by localized placement, Petroganic 2000 kg ha-1 by localized placement, SOF 2,5 tons ha-1 by side dressing SOF 5 tons ha-1 by side dressing, Petroganic 500 kg ha-1 by side dressing, Petroganic by 1000 kg ha-1 by side dressing, Petroganic 2000 kg ha-1 by side dressing. There were 11 treatment combinations, each treatment was replicated 3 times, so that 33 experimental units were obtained. The results showed that the distribution of SOF 5 tons ha-1 by localized placement had an effect on stem diameter which gave of 3.25 cm, the number of leaves 13.1 strands, and percentage of cob worth selling 100%. Giving SOF 5 tons ha-1 by localized placement giving yields reached 34.4 tons ha-1. Giving organic fertilizer gives better results than without applying organic fertilizer to all observed variables.Keyword: Solid Organic Fertilizer, Petroganic, Sweet corn, localized placement, side dressing
Xylem Limited Bacteria (XLB) Clove Disease Control Technology Through Utilization of Endophytic Bacteria Chrisnawati, Chrisnawati; Nasrun, Nasrun; Yulfidesi, Yulfidesi; Suryani, Suryani; Kasmawati, Kasmawati
Akta Agrosia Vol 25 No 1 (2022)
Publisher : Badan Penerbitan Fakultas Pertanian (BPFP), Fakultas Pertanian, Universitas Bengkkulu

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Abstract

Xylem Limited Bacterium  (XLB) disease  (Ralstonia syzygii) is  the most seriuos disease on clove plant. Biological control using Endophytic Bacteria (Bacillus sp. Bc25 and Fluorescentpseudomonad Pf22) is expected to control clove XLB disease.The  research  aim to get  Bacillus sp. Bc25 and   Fluorescent pseudomonad Pf22product are effective to control XLB disease on clove plant.The study of Bacillus sp. Bc25 and Fluorescent pseudomonad Pf22 was done in watering  on clove plant  field were infected by XLB disease in Solok West Sumatera on January to December 2017.The study used a randomized block design (RBD) with four replications. The parameters observed were the disease attack level and plant growth.The study results showed thatBacillus sp.Bc25  andFluorescentpseudomonadPf 22 can control  XLB  disease and increase clove growth.Bacillus sp. Bc25 and Fluorescentpseudomonad Pf22 combinationdemonstrate XLB   disease control capabilities and promote the best clove plants  growthby intensity suppressing of XLB  disease from 86.80% to 20.59% and increasing the clove plants growth from the stem circle 20.00 cm to 46.00 cm.Combination product of biological agents Bacillus sp. Bc25 and FluorescentpseudomonadPf22 can be developed to control XLB  diseases and increase clove plant growth.Keywords : Clove, Xylem Limited Bacteria Disease (Ralstonia syzygii),        Endophytic Bacteria (Bacillus sp. Bc25 and Fluorescent pseudomonad Pf22.   

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