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International Journal of Science and Environment

IJSE
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Published by CV. Inara

ISSN : - EISSN : 28090551 DOI : https://doi.org/10.51601/ijse.v2i4

Core Subject : Science, Education, Agriculture, Engineering,

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Mathematics Physics

International Journal of Science and Environment (IJSE) is to provide a research medium and an important reference for the advancement and dissemination of research results that support high-level research in the fields of Science and Environment . Original theoretical work and application-based studies, which contributes to a better understanding all fields of Science and Environment. The aim and scope of the journal Chemistry, Chemical Analysis, Physical Chemistry, Physics, Biology, Ecology, Biodiversity, Zoology, Biochemistry, Mathematics, Environmental Science, Agriculture, Environment, Forestry.

Arjuna Subject : Biokimia, Genetika dan Biologi Molekuler - Biokimia, Genetika dan Biologi Molekuler (Lain-Lain)

Articles 38 Documents

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Production and Potential Income for Business of Oil Palm Empty Fruits Bunch as A Media for Growing Oyster Mushroom Ni Kadek Sukriasih; Ikawati Karim; Suryani Dewi; Makmur; Cengiz Kayacilar
International Journal of Science and Environment (IJSE) Vol. 1 No. 1 (2021): November 2021
Publisher : CV. Inara

Solid waste produced by oil palm mills consists of oil palm empty bunches, shells, fibers and sludge. Oil palm empty fruit bunches contain 40 percent of cellulose, 24 percent of hemicellulose, 21 percent of lignin, and 15 percent of ash. This study aims to determine the production and the income potential of oyster mushrooms by using oil palm empty fruit bunches as a growth medium. This research is a quantitative descriptive study using an experimental design approach. Analysis of variance showed that all treatments had no significant effect on the length of mycelium fulfillment, the length of the mushroom stalk, the diameter of the fruit cap and the wet weight of the fungus. Treatment with K0 without empty fruit bunches of oil palm has the same growth and production potential as treatment of K1-K4 using oil palm empty fruit bunches. Fungal growth and production are influenced by environmental, nutritional and genetic factors. The potential production of oyster mushrooms with wood sawdust and 15 baglog empty fruit bunches growing media is 5.2 kilograms with a total cost of IDR 297,250. The total revenue for twice harvests for each baglog is IDR 312,000. Therefore, to support the potential for growth and production of oyster mushrooms, oil palm empty fruit bunches can be used as a medium for growing oyster mushrooms because they have the potential for income to be used as a business.

The Effect of the Old Fermentation of Liquid Organic Fertilizer with Rice Waste on Nitrogen Content, Phosphorus, and Potassium With the Addition of Human Urine Fadhilah Achmad; Mariani H. Mansyur
International Journal of Science and Environment (IJSE) Vol. 1 No. 1 (2021): November 2021
Publisher : CV. Inara

One source of organic fertilizer that is abundantly available in the environment is urine from humans. Urine is believed to affect the quality of the soil as a plant growing media. In addition, fertilizers are processed from stale rice waste too widely used by farmers in increasing crop productivity. In general, this research was conducted to produce liquid organic fertilizer made from waste rice and human urine. In particular this research implemented to determine the length of fermentation of liquid organic fertilizer made from the best waste of rice and human urine based on chemical content analysis (nitrogen, phosphorus, and potassium) and look for the concentration of waste rice and urine humans are good for fertilization. The stage of this research methodology began by performing a liquid organic fertilizer formulation made from rice waste human urine is added and stored in a closed container for 4, 6, and 8 days then chemical analysis was carried out. The result show that the longer the fermentation of liquid organic fertilizer, the higher the content of N, P, and K produced. The 8-day fermentation time with a human urine concentration of 250 ml produced the best content with a nitrogen content of 3.17%, a phosphorus content of 2.68%, and a potassium content of 3.48%. Therefore, it is expected that the use of stale rice waste with the addition of human urine as a source of liquid organic fertilizer which is abundant in everyday life is easier to apply by the community and can contribute to entrepreneurship.

Analysis Of The Density Of Coliform Bacteria As An Indicator Of Pollutant In The River Aek Katia Labuhan Batu District Arman Harahap; Bitondo Dieudonne; Harahap, P
International Journal of Science and Environment (IJSE) Vol. 2 No. 1 (2022): February 2022
Publisher : CV. Inara

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (145.589 KB)

Coliform bacteria is a one of a kind negative bacteria commonly found in the river aek katia in kabupaten labuhanbatu, the presence of coliform bacteria can be an indicator of biology that is important to know the environmental conditions. This study aims to determine the environmental conditions based on biological indicators in the form of an abundance of coliform bacteria in the river Aek Katia Kabupaten Labuhanbatu. The main ingredient in this study is the river water and sediment. The results obtained are still below the quality standard so that the river aek katia in good condition biologically. The presence of coliform bacteria in the river can affect human and biota. So it needs to be considered in the efforts of the management of the environment of the community , especially in an effort to maintain the sustainability of fisheries resources.

Temperature And Humidity Optimization To Add Save Life Strawberry (Fragaria chiloensis, L.) Kartika
International Journal of Science and Environment (IJSE) Vol. 2 No. 1 (2022): February 2022
Publisher : CV. Inara

This study aims to determine the appropriate temperature and humidity in the storage of strawberries, this research was carried out using 3 humidity treatments and 3 temperatures, namely humidity 65%, 75%, and 85% with a temperature of 10 oC, 15 oC, and room temperature, fruit fruit stored at room temperature lasts up to 3 days, while at 10 oC the fruit with 65% humidity treatment lasts up to 6 days, with 75% humidity for 6 days and with 85 % humidity it lasts for 7 days, at 15 oC the fruit with 65% humidity treatment lasts 5 days, with 75% humidity for 5 days and with 85% humidity lasts for 6 days, so based on research that has been done it is known that 85% humidity treatment with a temperature of 10 oC is the right storage for strawberries. The longest shelf life of strawberries is with a humidity treatment of 85% which is stored at 10 oC, which can extend the shelf life of 4 days longer when compared to storage at room temperature.

Toxicity Test of Catharanthus roseus Flower Extract with Brine Shrimp Lethality Test Method Melia Sari; Chemayanti Surbakti; Tetty Noverita Khairani; Willy Novita Sari; Gabriella Septiani Nasution
International Journal of Science and Environment (IJSE) Vol. 2 No. 1 (2022): February 2022
Publisher : CV. Inara

Tapak dara (Catharanthus roseus) is a plant belonging to the Apocynaceae family originating from Central America and is generally grown as an ornamental plant. The purpose of this study was to determine the percentage of mortality data and the LC50 value of tapak dara methanol extract (Catharanthus roseus) against Artemia salina Leach larvae using the Brine Shrimp Lethality Test (BSLT) method. The BSLT method used consisted of 6 concentration treatments, namely 20 ppm, 60 ppm, 100 ppm, 140 ppm, 180 ppm, and 0 ppm a negative control, each of which was repeated three times. At each concentration, 10 experimental animals of 48 hours old Artemia salina Leach larvae were used. The toxic effect of the extract was identified by the percentage of mortality of Artemia salina Leach larvae using probit analysis (LC50). The results showed the linear regression equation y = 3.0809x – 12.065. This shows that the mortality of the test animals reached 50% when the compound concentration reached 34,599 ppm. Based on the toxicity test of the methanol extract of the tapak dara flower (Catharanthus roseus) using the Brine Shrimp Lethality Test (BSLT) method, in this study it was toxic because LC50>1000 ppm so it has potential as an anticancer.

Forecasting of The Crime Rate Using Automatic Clustering and Fuzzy Logic Relationship Method In North Sumatra Elsyah Suhadiyah; Sajaratud Dur; Hendra Cipta
International Journal of Science and Environment (IJSE) Vol. 2 No. 1 (2022): February 2022
Publisher : CV. Inara

Currently the crime rate is very alarming and reported in various mass and electronic media. The high crime rate in the Province of Nort Sumatra is very unsettling for the community. The purpose of this research is to get the result of forecasting the crime ratel in the 2021 - 2024 using Automatic Clustering And Fuzzy Logic Relationship (ACFLR) method. The advantage of this method is that the method has a high level of accuracy because the Mean Absolute Percentage Error (MAPE) value is relative small and the results of forecasting analysis obtained in 2021 there are 31522 cases, in 2022 are 31533 cases, in 2023 are 31574 cases and the last one in 2024 was 31602 cases. In addition, the prediction error rate MAPE obtained is 0,35 % Keywords: Crime rate, Automatic Clustering And Fuzzy Logic Relationship.

Potential Plants Developed With Agroforestry System For Forest Land Rehabilitation In East Java Indah Rekyani Puspitawati; Anang Susanto
International Journal of Science and Environment (IJSE) Vol. 2 No. 1 (2022): February 2022
Publisher : CV. Inara

Activity the clearing of forest areas and the construction of canals in forest areas, causing a drastic decrease in the forest ground water level and forest depth and causing serious impacts on the ecosystem cycle. the system that will be applied will, of course, be closely related to the interests of the owner of land that expects benefits from the rehabilitation activities carried out. This study aims to provide information about the types of plants that have economic value for the community, according to the extreme nature of forest land, and can be mixed with short-lived plants. Several locations showed survival rates above 75%. There were several types of plants, Albizzia,Tectona, Delbegia, Dipterocarpus, and Gmelina, which were recorded to provide good growth values. The role of the community is needed to the maximum in the efforts to rehabilitate forest land, especially in the area of rights and forest land managed by the community and protected/conservation areas where the community has access to it. Agroforestry has excellent potential to be applied on forest slopes. The application of agroforestry on forest slopes opens new paths for more efficient use of forest slopes with more varied results while considering the aspect of sustainability (conservation). The results of observations made in community gardens and forest lands used by the community and literature review on trials of planting plants for rehabilitation and commodity plants that are economically beneficial to the community, it is known that there are at least ten types of plants.

Comparison Of Jakaba Growth With The Addition Of Organic Matter In Rice Washing Water Yusminan Yusminan; Hilwa Walida; Fitra Syawal Harahap; Novilda Elizabeth Mustamu
International Journal of Science and Environment (IJSE) Vol. 2 No. 3 (2022): August 2022
Publisher : CV. Inara

Jakaba (perennial luck mushroom) is a fungus derived from the fermentation of rice laundry water (leri). This fungus has the same physical shape as coral but has a fragile texture. This study aims to find out the growth of jakaba with the addition of organic matter in rice laundry water. The research was conducted in Padang Halaban village, Aek Kuo District, Labuhan Batu Utara Regency, North Sumatra. The research was conducted by mixing 1 liter of leri water with 400 grams of organic ingredients such as bran, banana peel and catfish feed Research was carried out by repeating each treatment as much as 6 repetitions with the parameters of salting, namely aroma, color, growth and diameter of jakaba. Based on observations, it is known that the growth of jakaba fungus occurs on the 12th day to the 15th day with the largest jakaba diameter which is 52.9 mm (P2) and the smallest is 40.25 mm (P1). The addition of other organic matter to leri water gives a different aroma and color of jakaba to each treatment.

The Relation Ship Between Total Soil Microbes With N, P , K Nutrient Levels By Paddy Plant (Case Study In Ajamu Village, Panai Hulu District, Labuhanbatu Regency) Kurnia Renaldy; Walida Hilwa; Khairul Rizal; Harahap FS
International Journal of Science and Environment (IJSE) Vol. 2 No. 2 (2022): May 2022
Publisher : CV. Inara

The neglect of returning organic matter to the soil and the intensive use of chemical fertilizers inpaddy fields have caused the physical, chemical, and biological quality of the soil to decline. Such soilconditions cause the population of soil biota that plays a role in nitrogen fixation and phosphatesolubility to decrease. This study aims to determine the relationship between total microbes andnutrient levels of N, P, K in rice plants in Ajamu Village, Panai Hulu District, Labuhan Batu Regency.This research was conducted from December 2021 to January 2022. Sampling was carried out bytaking leaves and rhizosphere soil of rice plants at 5 zigzag sampling points in a rice field area.Parameters observed in this study were nutrient levels of N, P, K and total microbes. The analysis wascarried out using correlation and regression methods.

Increased Production Of Corn (Zea Mays, L) Varieties Lamuru, Bisma, Sukmaraga In Marginal Critical Land With The Use Of Cow Manure In North Aceh Regency Jamidi Jamidi; Nasruddin; Hafifah; Zurrahmi Wirda; Muhammad Albi Ansari Pohan
International Journal of Science and Environment (IJSE) Vol. 2 No. 3 (2022): August 2022
Publisher : CV. Inara

This study aims to determine the technique of increasing the production of corn (Zea mays, l) varieties of lamuru,bisma, sukma raga with marginal critical land with the use of cow manureby North Aceh District. This research was carried out from June to November 2021, at the West Reuleut Gampong Garden, Muara Batu District, North Aceh Regency. This study used a 3 x 2 randomized block design and replicated 3 times. The first factor is varieties with 3 levels, name-ly: Bisma, Lamuru, and Sukmaraga varieties. The second factor is cow manure with 2 levels, namely 15 tons/ha and 20 tons/ha. Parameters observed were plant height, stem diameter, number of leaves, time of flower emergence, cob length, cob weight, length without cob, weightwithout cob, and weight of 1000 seeds. The results showed that the treatment of severalvarieties showed a very significant effect on almost all of the observed variables. The use of bisma varieties showed the best growth. The use of cow manure 15 tons/ha also gives the bestgrowth on almost all variables.

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Arman Harahap

Contact Email
armanhrahap82@gmail.com

Phone
+6285370005518

Journal Mail Official
ijersc@gmail.com

Editorial Address
Jl. SM. Raja, Kota Rantauprapat, Sumatera Utara, Indonesia

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Unknown

INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name Arman Harahap

Contact Email armanhrahap82@gmail.com

Phone +6285370005518

Journal Mail Official ijersc@gmail.com

Editorial Address Jl. SM. Raja, Kota Rantauprapat, Sumatera Utara, Indonesia

Location Unknown, Unknown INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Contact Name
Arman Harahap

Contact Email
armanhrahap82@gmail.com

Phone
+6285370005518

Journal Mail Official
ijersc@gmail.com

Editorial Address
Jl. SM. Raja, Kota Rantauprapat, Sumatera Utara, Indonesia

Location
Unknown,

Unknown

INDONESIA