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All Journal HAYATI Journal of Biosciences Jurnal Ilmu Pertanian Indonesia Biology, Medicine, & Natural Product Chemistry BIOLINK (Jurnal Biologi Lingkungan, Industri, Kesehatan) Jurnal Penelitian Pendidikan IPA (JPPIPA) Agrotekma: Jurnal Agroteknologi dan Ilmu Pertanian Jurnal Pembelajaran dan Biologi Nukleus Community Development Journal: Jurnal Pengabdian Masyarakat Jurnal Ilmiah Pertanian ( JIPERTA) Journal of Applied Agricultural Science and Technology Jurnal Natural Journal Liaison Academia and Society
Saipul Sihotang
Universitas Medan Area
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Utilization of Various Vegetable Insecticides to Control Grayak Caterpillars (Spodoptera litura) on Soybean (Glycine max L. Merrill) in Laboratory Azwana, Azwana; Sihotang, Saipul
Jurnal Penelitian Pendidikan IPA Vol 9 No 6 (2023): June
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v9i6.3181

Abstract

The aim of this study was to observe the effect of various vegetable insecticide extracts on controlling armyworm (Spodoptera litura) on soybean plants in the laboratory. The research was conducted at the Plant Protection Laboratory, Faculty of Agriculture, University of Medan Area, from November 2021 to April 2022, using a Completely Randomized Design (CRD) Non Factorial, consisting of 7 treatment levels, namely: N0 = no treatment (control), N1 = Mindi leaf extract concentration 5% (50 m/l water), N2 = Mindi leaf extract 10% (100 ml.l water), N3 = Mindi leaf extract concentration 15% (150 m/l water), N4 Babadotan concentration 5 % (50 ml/l air), N5 = 10% concentration of Babadotan leaf extract (100 ml/lair), N6 = 15% concentration of Babadotan leaf extract (150 ml/lair), with repetition 3. Parameters observed for Armyworm Mortality (%), LC50, LT50, the proportion of the effectiveness of vegetable insecticides on armyworm mortality and the amount of feed consumed. The results showed that the application of vegetable insecticides had a significant and very significant effect on armyworm mortality from 4 days after application to 10 days after application with the highest mortality proportion at a concentration of 15%. The LC50 values of the plant insecticides mindi leaves and babadotan leaves were almost the same, namely 4.69 and 4.48%. The LT 50 value for a concentration of 15% showed that babadotan leaf extract was faster than mindi leaf extract, namely mindi leaves 5.145 days and babadotan leaves 4.633 days. Concentrations of 10 and 15 % of the 2 plant extracts tested showed the same effectiveness on mortality of S. litura caterpillars and higher dissolving concentrations of 5%. The amount of feed consumed was also significantly different with the highest amount of feed in the control treatment (60.75 g) followed by the treatment of mindi leaves and babadotan leaves at concentrations of 15, 10, and 5%.
Rat Taro Extract (Typhonium flagelliforme (Lodd.)) as A Biofungicide Against the Cause of Leaf Fall (Pestalotiopsis sp.) on Rubber Plants (Hevea brasiliensis) Noer, Zulheri; Manik, Prendy Jonringga; Sihotang, Saipul
Jurnal Penelitian Pendidikan IPA Vol 9 No 6 (2023): June
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v9i6.3903

Abstract

Typhonium flagelliforme or known as rat taro is a herbaceous plant that belongs to the taro tribe. The results of the phytochemical analysis of the leaves and tuber extracts of rat taro are known to contain secondary metabolite compounds belonging to the class of flavonoids, alkaloids, triterpenoids, steroids, saponins, and tannins which act as antimicrobials. This study aims to determine the effectiveness of leaf, stem and tuber extracts of rat taro (Typhonium flagelliforme (Lodd)) as a biofungicide against the cause of leaf fall (Pestalotiopsis sp.) on rubber plants (Hevea brasiliensis). Leaf samples came from rubber plants at PTPN III Karet Sei Putih, Galan District, Deli Serdang Regency, North Sumatra. Pestalotiopsis sp. was isolated from plant parts showing leaf fall symptoms. Pieces of rubber leaves infected with Pestalotiopsis sp. was grown on PDA media in a petri dish and incubated for ±7 days at room temperature 26–28oC. After incubation, microscopic identification of the conidia of the fungus was carried out. In vitro test of the inhibition power of extracts of leaves, stems and tubers of rat taro against the fungus Pestalotiopsis sp. was carried out in a petri dish using the fungus culture method. The results of the phytochemical screening showed that the leaf, stem and tuber extracts of rat taro contained chemical compounds of flavonoids, tannins, saponins, alkoloids, and steroids/triterpenoids. The results showed that the leaves, stems and tuber extracts of rat taro (T. flagelliforme L.) have potential as biofungicides, K13 treatment of tuber extract of rat taro (Typhonium flagelliforme L.) 9% was the best treatment which could inhibit the growth of Pestalotiopsis sp.
Analysis of Organic Mulching on Soil Fertility and the Productivity of Sweet Corn (Zea mays saccharata Sturt L.) Mardiana, Siti; Hasibuan, Sayyid Al-Fadhil; Hutapea, Sumihar; Sihotang, Saipul
Jurnal Penelitian Pendidikan IPA Vol 9 No 8 (2023): August
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v9i8.4528

Abstract

One of the causes of the low productivity of sweet corn is decreased soil productivity due to the leaching of nutrients by rainwater, tillage, and continuous application of inorganic fertilizers. The function of mulching is to increase soil moisture, suppress weed growth, and prevent soil erosion to create optimal soil conditions for plant growth. This study aimed to determine the effect of organic mulching on soil fertility and the productivity of sweet corn (Zea mays saccharata Sturt). This study used a Split Plot Design consisting of two factors, Tillage (P) and Organic Mulch (M) which had 6 levels, M0 = No Mulch, M1 = Plastic Mulch, M2 = Rice Straw Mulch, M3 =Cocopeat Mulch, M4 = Sawdust Mulch, M5 = Rice Husk Mulch. The results show that the M2 treatment of Rice Straw Mulch tended to increase soil fertility and had a significant effect on the productivity of sweet corn.
Factors Affecting the Income of Labor Fishermen (Case Study: Tebing Tinggi Village, Tanjung Beringin District, Serdang Bedagai Regency) Aziz, Rizal; Sihombing, Roni Paulus; Siregar, Rahma Sari; Sihotang, Saipul
Jurnal Penelitian Pendidikan IPA Vol 9 No 12 (2023): December
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v9i12.4530

Abstract

Indonesia is a country that has a very large water area which is a large potential resource to be utilized for national development. This condition affects the strong weak economic activities of the village. The purpose of the study is to find out how much the income of labor fishermen in Tebing Tinggi Village, Tanjung Beringin District, Serdang Bedagai Regency and to find out what factors affect the income of labor fishermen in Tebing Tinggi Village, Tanjung Beringin District, Serdang Bedagai Regency. This research was conducted in Tebing Tinggi Village, Tanjung Beringin District, Serdang Bedagai Regency, North Sumatra Province. This location was chosen intentionally (Purposive). The population in this study was 546 labor fishermen, the determination of the sample in this study used Arikunto's theory, namely if the total population was less than 100 people, then the number of samples was taken as a whole. But if the population is larger than 100 people then it can be taken 10-15% and 20-25% of the total population. The samples in this study were taken as much as 10% of the total population, so the number of samples in this study was 55 labor fishermen. Data collection techniques use primary data and secondary data, data analysis techniques in research use income analysis and multiple linear regression analysis. The results of the research on the working capital costs of labor fishermen amounted to Rp. 244,894/month, with an income of Rp. 4,128,386/month with an average of 12 trips a month of fishing. The results of multiple linear regressions that the working capital variable and the catch variable have a significant effect on the income of labor fishermen while the time variable at sea and experience variables do not have a significant effect on the income of labor fishermen in Tebing Tinggi Village, Tanjung Beringin District, Serdang Bedagai Regency.
Provision of POC Coconut Water and Tea Dregs Compost on Plant Growth and Production Pane, Erwin; Sihotang, Saipul; Sitompul, Marco Y. F; Indrawaty, Asmah; Mariana, Merlyn; Qohar, Adi Fathul
Jurnal Penelitian Pendidikan IPA Vol 9 No 9 (2023): September
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v9i9.4984

Abstract

The aims ofthis research is to determine the response of growth and production of sweet corn (Zea Mays Saccharata Strurt) to the application of liquid organic fertilizer coconut water and tea waste compost. The research cobducted in Trial Garden of Agriculture Faculty of Medan Area University, Kolam Street no 1 Medan Estate with height 22 m above sea level. Plat topografi and alluvial soil type was done since June up to September 2018. The research is using Random Designing Group Factorial with two factors, such as coconut water POC (K0 = Control (purn); K1 = coconut water POC 50 ml/L; K2 = coconut water POC 100 ml/L; K3 = coconut water POC 150 ml/L), and the giving factors of tea pulp compost (K0 = Control (purn); K1 = tea pulp compost 5 Ton/Ha; K2 = tea pulp compost 10 Ton/Ha; K3 = tea pulp compost 15 Ton/Ha). Repeatedly twice. Parameter which observed are the height of the plant, leaf amount, diameter of the stem, the sample each plot of plant production, plant production each plot. The result of this research is two show that the giving of coconut water POC is not really influencing to the treatment and giving of the tea pulp compost to the treatment and giving of the tea pulp compost is really influencing to the height of the plant, the sample of plant production each plot, plant production each plot but not really influence to the leaf amount and diameter of stem as well as combination among coconut water POC and tea pulp compost is not influencing to all treatments.
The Influence of Monoculture and Polyculture Planting Patterns on the Intensity of Pest Attacks by Helopeltis sp. on Arabica Coffee of the Sigarar Utang Variety in North Tapanuli Regency Kuswardani, Retna Astuti; Mardiana, Siti; Suswati; Sihotang, Saipul
Jurnal Penelitian Pendidikan IPA Vol 9 No 12 (2023): December
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v9i12.5924

Abstract

Coffee is one of the leading commodities in the plantation subsector in North Sumatra which has good market opportunities both domestically and abroad. Especially in the Lake Toba area, apart from the PBKo pest, it turns out that attacks by the coffee leaf sucking pest Helopeltis sp. are also felt to be very important by farmers, because the presence of Helopeltis sp. This causes the coffee leaf shoots to develop brown spots, curl and eventually dry out and die (die back). The aim of the research was to study the symptoms of attacks and the intensity of Helopeltis sp. attacks on Arabica coffee plants in the Lake Toba area, North Tapanuli Regency. This research was carried out on people's coffee plantations in North Tapanuli Regency at an altitude of 1,300 meters above sea level, from February to June 2023. On the Sigarar Utang variety Arabica coffee plantation with monoculture and polyculture planting patterns. The sample plants were determined to be 10% of the total plants at each observation location. Sampling of plant samples is determined using a zig zag line. The parameters observed were the intensity of attacks and the percentage of pest attacks. The results obtained by Helopeltis sp. sucking shoot pests have been known to attack coffee plants in North Tapanuli Regency with symptoms of attack. At the start of the attack, leaf spots are visible, brown, curly and eventually dry out, die back, then grow rosettes, namely shoots, new ones that are shortened tightly and do not develop. The intensity of attacks by Helopeltis sp. on smallholder coffee plantations in North Tapanuli Regency is quite varied, from light to heavy attacks with the intensity of shoot attacks ranging from 15.67% to 57.80%. Monoculture coffee plantations with protective plants, but no pruning, are locations with Helopeltis sp. attack levels in the heavy category with shoot attack intensity reaching 56.66%. The intercropping coffee plant cultivation system (polyculture) had a significant influence on the low intensity of Helopeltis sp. attacks, where tcount (8.921) > ttable (2.306).
IDENTIFIKASI KANDUNGAN SENYAWA METABOLIT SEKUNDER PADA BATANG DAN DAUN SURAT DIBATA (Macodes petola) MENGGUNAKAN GAS CHROMATOGRAPHY SPECTROMETRY (GCMS) Sianturi, Parulian; Dalimunthe, Nur Asyiah; Sahfitra, Angga Ade; Aziz, Rizal; Sihotang, Saipul
Agrotekma: Jurnal Agroteknologi dan Ilmu Pertanian Vol. 8 No. 2 (2024): Agrotekma: Jurnal Agroteknologi dan Ilmu Pertanian, Juni
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/agr.v8i2.12725

Abstract

This study, entitled Identification of Secondary Metabolite Compounds in the Stems and Leaves of Surat Dibata (Macodes petola) Using Gas Chromatography Mass Spectrometry (GCMS) aims to determine the compounds and their concentrations of secondary metabolites present in the stems and leaves of Surat Dibata (Macodes petola) using Gas Chromatography Mass Spectrometry (GCMS). The methods used in this study include maceration extraction to identify secondary metabolite compounds and Gas Chromatography Mass Spectrometry (GCMS) to determine the concentrations of these compounds in the stems and leaves of Surat Dibata (Macodes petola). The results of the study showed that the extraction identified secondary metabolite compounds such as steroids in the stems and flavonoids, steroids, and tannins in the leaves. Based on the results from the GCMS analysis, the stems were found to contain 0.63% steroids, while the leaves contained 0.002% flavonoids, 0.002% tannins, and 2.215% steroids.
Effects of Naphthaleneacetic Acid and Kinetin on Chrysanthemum Plantlets in Vitro Sihotang, Saipul; Saragih, Magdalena; Sembiring, Swati; Sembiring, Riduan; Yanty, Dini Puspita; Tanjung, Denny Akbar; Afrida, Elli
Journal of Applied Agricultural Science and Technology Vol. 9 No. 4 (2025): Journal of Applied Agricultural Science and Technology
Publisher : Green Engineering Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55043/jaast.v9i4.315

Abstract

Naphthaleneacetic acid (NAA) and kinetin play a crucial role in plant growth but must be used in correct proportions in order to produce the best outcomes. An optimal combination of both can enhance shoot, leaf, and root growth, whereas inappropriate doses may otherwise inhibit growth due to hormonal imbalance. This study examined the effects of the interaction between NAA and kinetin on the growth of chrysanthemum plants at eight weeks of age. The research was carried out using the Completely Randomized Design (CRD) in triplicate. The medium used was MS medium, supplemented with NAA at concentrations of 0–1.5 mg/L and kinetin at concentrations of 0–3 mg/L. The results indicate that NAA and kinetin positively influenced plant growth, but only when the optimal concentrations were applied. The best combination of NAA at 1.0 mg/L (N2) and kinetin at 3.0 mg/L (K3) produced the best results in terms of height (153 mm), number of leaves (31 leaves), number of roots (26 roots), and fresh weight (5.85 g). Increasing kinetin concentrations (K0-3) generally promoted plant growth, whereas excessive NAA concentrations (> 1.0 mg/L, N3) produced the opposite effect, likely due to toxicity or hormonal imbalance. The interaction between kinetin and NAA exhibited a synergistic effect up to a certain threshold, while excessive NAA application negatively impacted on plant development.
Co-Authors Alifyah, Nabila Angga Ade Sahfitra Asmah Indrawati Asmah Indrawaty, Asmah Azwana Azwana Betty Saragih, Nur Butar-Butar, Alfons Dwi Putra Elinda, Friza Ellen Lumisar Panggabean Elli Afrida Emmanuel Halawa Erwin Pane, Erwin Frisky Purba Ginting, Rajiv Halawa, Emmanuel Haliatur Rahma, Haliatur Hasibuan, Sayyid Al-Fadhil Herliyani, Selvi Hutapea, Sumihar Ida Ayu Putu Sri Widnyani Ika Listiana Imam Alfazri Irfan Suliansyah Ivan Permana Putra Jamsari Jamsari Lilis Supratman Mada Triandala Sibero Manik, Prendy Jonringga Mariana, Merlyn Maulana, Bagus Merlan Manurung Meyuliana, Aulia Miranda, Cut Nyak Dara Mochammad Imron Awalludin Muhammad Aldy Napitupulu, Beatrix Sofranes Nasution, Lita Natalina Tarigan Nur Asyiah Dalimunthe Oktan Dwi Nurhayat Pandiangan, Indera Prabowo Panggabean, Ellen L. Parlindungan Sitepu, David Qohar, Adi Fathul Rahmiati Rahmiati Renfiyeni Retna Astuti Kuswardani Riyanto Riyanto Rizal Aziz, Rizal Rudy Hermawan Rudy Hermawan SAISA SAISA Saragih, Magdalena Saragih, Nur Betty Saragih, Ryan Sartini Sartini Sembiring, Riduan Sembiring, Swati SERI DEPI Sianturi, Parulian Sihombing, Roni Paulus Silaban, Sri Rejeki Siregar, Rahma Sari SITI MARDIANA Siti Mardiana Sitompul, Marco Y. F Suswati Suswati Suswati Tanjung, Denny Akbar Trizelia . Yabani, Yabani Yanty, Dini Puspita Yora, Muharama Yosafat Siregar Zulheri Noer