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All Journal International Journal of Economic, Business, Accounting, Agriculture Management and Sharia Administration (IJEBAS) International Journal of Social Science, Educational, Economics, Agriculture Research, and Technology (IJSET) MEDALION JOURNAL: Medical Research, Nursing, Health and Midwife Participation
Syamsafitri
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Agriculture, Biological Sciences & Forestry Humanities Computer Science & IT Dentistry Economics, Econometrics & Finance Education Health Professions Medicine & Pharmacology Nursing Public Health Veterinary

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INFLUENCE OF RAINFALL ON DOWNY MILDEW INTENSITY, PRODUCTIVITY, AND SYMPTOMS OF Peronosclerospora spp. ATTACK IN MAIZE CROPS IN SIMALUNGUN REGENCY Murni Radiah; Syamsafitri; Murni Sari Rahayu; Romi Fahri
International Journal of Social Science, Educational, Economics, Agriculture Research and Technology (IJSET) Vol. 4 No. 8 (2025): JULY
Publisher : RADJA PUBLIKA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54443/ijset.v4i8.869

Abstract

Maize is one of the world's food crops, and Simalungun Regency is one of the corn production centers in Indonesia. Corn production in Simalungun Regency has decreased due to various factors including downy mildew. Downy mildew disease is caused by Peronosclerospora spp. its development is increasingly rapid supported by a high humidity environment, while the purpose of the study was to examine the effect of rainfall on downy mildew disease intensity, productivity, production, and symptoms of corn plant attack in different locations.Research method: Observations of correlation and regression tests of rainfall on disease intensity, productivity, production, and harvest area of corn were analyzed using Minitab statistical application.The results showed that there is a relationship between rainfall and downy mildew intensity, production, productivity, and harvest area of corn plants. The intensity of downy mildew was highest in Tanah Jawa sub-district with an average disease intensity of 7.81%, this was due to the fact that no eradication was done on plants infected with Peronosclerospora spp. The symptoms of attack found at each observation location had the same symptoms.
INCREASING THE EFFECTIVENESS OF SOME TYPES OF ATTRACTANTS THROUGH SEVERAL TYPES OF DISPENSERS AGAINST FRUIT FLY PESTS (Bactrocera spp. ) ON GUAVA PLANTS (Psidium guajava L. ) Sulaiman Ginting; S. Edy Sumantri; Fenty Maimunah Simbolon; Syamsafitri
MEDALION JOURNAL: Medical Research, Nursing, Health and Midwife Participation Vol. 2 No. 1 (2021): March
Publisher : PT. Radja Intercontinental Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59733/medalion.v2i1.92

Abstract

This research was carried out in Sawit Rejo Village, Sunggal District, Deli Serdang Regency, North Sumatra Province, at an altitude of ± 500 m above sea level. The aim of this research was to determine the effectiveness and catchability of several types of attractants and dispenser media on the attraction of fruit fly pests to guava (Psidium guajava L) . This research was carried out in 2 stages. The first stage was a Randomized Block Design with testing of several types of attractants carried out at 9 levels, namely, A1 (Synthetic Methyl Eugenol Attractant 800 g/l), A2 (Pattoouli Oil), A3 (Nutmeg Oil), A4 (Pattoouli Flower Oil) , A5 (Cinnamon Oil), A6 (Ylang Ylang Flower Oil), A7 (Citronella Oil), A8 (Lemon Oil) and A9 (Vutive Root Oil). The second stage was a Factorial Randomized Block Design by testing several types of attractants and dispenser media, with the first factor being the type of attractant with 4 levels, namely A1 (Synthetic Methyl Eugenol Attractant 800 g/l), A2 (Pattoouli Oil), A3 (A1 + Solvent Solution) , A4 (A2 + Solvent Solution). The second factor for media dispensers was carried out at 3 levels, namely K (Cotton Roll Media), B (Wooden Block Media) and P (Plastic Media). The parameters observed were the number of fruit flies trapped in the bottle in the first stage, the number of non-target insects in the first stage, the number of fruit flies trapped in the second stage, the non-target insects in the second stage and. The results of the research showed that treatment in the first stage had a significant effect on the number of fruit flies trapped. Attractant treatment with synthetic methyl eugenol and patchouli oil is the treatment that attracts most fruit flies so they become trapped in the treatment bottles. Meanwhile, in the second stage, the research results showed that treatment A1 (Synthetic Methyl Eugenol Attractant 800 g/l) was the most effective in attracting fruit fly pests , this can be seen from the results of the number of fruit flies trapped in bottles compared to other types of attractants. Meanwhile, the most effective media dispenser is media K (Cotton Roll). This can also be seen from the number of flies trapped in bottles compared to other media. Meanwhile, the treatment interaction between the type of attractant and the dispenser media which had a significant effect was the interaction between A1 (Synthetic Methyl Eugenol Attractant 800 g/l) and the dispenser medium K (Cotton Roll), this can be seen from the results of the number of fruit flies trapped in the bottle compared to other interactions. This second stage of research shows the results of a real influence with a decreasing graph. This is in accordance with research conducted from treatment 1 DSA – 25 DSA, the number of fruit fly catching abilities decreased over time.
GROWTH OF RUBBER PLANT (Hevea Brasiliensis Muell. Arg) ON THE USE OF MATERIALS THAT CAN IMPROVE SOIL FERTILITY Mahyuddin Dalimunthe; Syamsafitri; Rahmi Dwi Handayani Rambe; Indra Gunawan; Nurhayati
International Journal of Economic, Business, Accounting, Agriculture Management and Sharia Administration (IJEBAS) Vol. 2 No. 6 (2022): December
Publisher : CV. Radja Publika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54443/ijebas.v2i6.703

Abstract

This research was carried out at the PTPN III Sarang Giting plantation, Afdeling II, which is located in Sarang Giting Village, Dolok Masihul District, Serdang Bedagai Regency, North Sumatra Province. Venue Altitude 30m above sea level (asl) and flat land topography. The purpose of this study was to determine the effect of stem circumference and production of rubber plants (Hevea brasiliensis Muell. Arg) on ​​potassium (KCl) combined with agricultural lime (CaCO3) and magnesium (MgSO4) and their effect on the dynamics of soil K levels. This study used a factorial randomized block design (RBD) with 3 (three) factors studied, namely the agricultural lime application factor (C), which consisted of C0 = control and C1 = 1500g/tree/year. The second treatment factor was giving magnesium (M) which consisted of M0 = control, M1 = 1500g/tree/year, M2 = 3000g/tree/year, and M3 = 4500g/tree/year. The third treatment factor was the provision of potassium (K) consisting of K0 = control, K1 = 500g/tree/year, K2 = 1000g/tree/year, and K3 = 1500g/tree/year. The results showed that the administration of potassium combined with the application of agricultural lime and magnesium had a significant effect on the growth parameters of stem circumference. Potassium application combined with agricultural lime and kiserite also had a significant effect on the dynamics of K levels in the soil. However, it did not significantly affect the production of liquid latex
MOLECULAR CHARACTERS OF ENDOPHYTIC FUNGI ISOLATE FROM RUBBER LEAVES (Hevea brasiliensis) Syamsafitri; Darma Bakti Nasution; Lisnawita; Radite Tistama
International Journal of Economic, Business, Accounting, Agriculture Management and Sharia Administration (IJEBAS) Vol. 2 No. 4 (2022): August
Publisher : CV. Radja Publika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54443/ijebas.v2i4.1245

Abstract

Endophytic microbes can be isolated from various types of plants, one of which is from rubber leaves (Hevea brasiliensis). Rubber plants have been planted widely, which means they have the ability to adapt to environmental conditions. Apart from that, currently many rubber clones have been produced which of course harbor potential microbes in them. The potential presence of endophytic fungi can be utilized to support the growth of rubber plants. Isolation of endophytic fungi from rubber plants which have potential as biological agents for controlling diseases, one of which is leaf fall disease. The aim of this research was to determine the diversity of endophytic fungal isolates associated with rubber clone leaves using the DNA extraction method from endophytic fungi from rubber leaves. The results of PCR amplification of the genome DNA of 5 endophytic fungal isolates using primers ITS1 and ITS4 produced one DNA fragment with a size of 612 bp for Aspergillus sp. (BB1) 598 bp for Aspergillus flavus (BB2), 637 bp for Trichoderma asperelum (BB4), 610 bp for Aspergillus sp (KI1) and 621 bp for Aspergillus flavus in isolate KI3 Based on the results of BLAST analysis of the DNA fragment sequence with the fungal isolate sequence Other endophytes in the National Center for Biotechnology Information (NCBI) GeneBank show that the sequence similarity between the isolates analyzed is 99-100%.
THE EFFECT OF PROVIDING TYPES OF BIOLOGICAL AND RHIZOBIUM FERTILIZERS ON SOYBEAN (Glycine max L) CROP PRODUCTION Syamsafitri; Muhammad Rizwan; Nurhayati; Sri Hafnida Ritonga; Amalia
International Journal of Economic, Business, Accounting, Agriculture Management and Sharia Administration (IJEBAS) Vol. 3 No. 6 (2023): December
Publisher : CV. Radja Publika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54443/ijebas.v3i6.1246

Abstract

This research aims to determine the effect of giving Biohayati fertilizer, giving Rhizobium bacteria and also the interaction of giving Biohayati fertilizer on soybean production. This research was carried out in Laut Tador Village, Batu Bara Regency, North Sumatra Province. At an altitude of ± 12 meters above sea level with flat topography. This research used a factorial RAK (randomized group design) with 2 treatment factors. The first factor is the provision of Bio-Biological Fertilizer, which consists of four levels, namely: B0 = No treatment, B1 = Bio-biotic solution with a dose of 18 ml/liter of water, B2 = Bio-biological solution with a dose of 20 ml/liter of water, B3 = Bio-biological solution with a dose of 22 ml/liter of water. The second factor is that the administration of Rhizobium bacteria is carried out at three levels, namely: R0 = no treatment, R1 = Rhizobium at a dose of 1.6 kg/plot (seeds mixed with Rhizobium solution), R2 = Rhizobium at a dose of 1.8 kg/plot (Rhizobium is watered in land). The results of the research show that the effect of providing Biohayati has a significant effect on soybean plant production, namely the number of pods and filled pods. The effect of giving Rhizobium bacteria has a significant effect on soybean plant production, namely the number of pods and filled pods. The interaction effect of giving Biohayati and Rhizobium bacteria on soybean production did not have a significant effect. Providing a biological solution at a dose of 22 ml/liter of water and Rhizobium at a dose of 1.6 kg/production plot to soybean plants is the best dose.
STUDY OF THE IMPACT OF CLIMATE CHANGE ON PRODUCTIVITY AND DISEASES OF RICE PLANT IN VILLAGES OF SIMALUNGUN DISTRICT Khairil Hanif; Tri yuslisa sirait; Nurhayati; Asmanizar; Syamsafitri
International Journal of Economic, Business, Accounting, Agriculture Management and Sharia Administration (IJEBAS) Vol. 4 No. 2 (2024): April
Publisher : CV. Radja Publika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54443/ijebas.v4i2.1606

Abstract

The aim of the research is to evaluate whether climate change has occurred in Simalungun Regency and study its impact on rice productivity and pest attacks. The research was carried out in March – May 2023 in Simalungun Regency, North Sumatra Province. With the results of the study of the impact of climate change on productivity and disease in rice plants in Sei Merbau village, Ujung Padang subdistrict, Simalungun district, carried out using the location survey method and taking climate data from the BMKG office, data on production, productivity and disease pests on rice plants were taken. from the agricultural service office. The climate data for 3 years that has been obtained is compared each year by looking at the results of developments in productivity and pests and diseases in rice plants in Sei Merbau village, Ujung Padang sub-district, Simalungun district. In 2018-2020, the climate in Simalungun district experienced fluctuations every year which could have an impact on the development of rice plant productivity and rice plant diseases in Simalungun district every year. There is a significant level of correlation between rainfall and rainy days on rice production and productivity in Simalungun Regency.
RESPONSE OF ADMINISTRATION OF TRICHOCOMPOST AND ECO ENZYME SOIL IMPROVEMENT ON GROWTH AND PRODUCTION OF GLASS GEM CORN (Zea mays L.) May Ryan Sandi; Asmanizar; Syamsafitri
International Journal of Economic, Business, Accounting, Agriculture Management and Sharia Administration (IJEBAS) Vol. 4 No. 4 (2024): August
Publisher : CV. Radja Publika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54443/ijebas.v4i4.1878

Abstract

The main objective of this research is to determine the growth response and production of glass gem corn plants (Zea mays L.) using trichocompost soil amendments and the application of eco enzyme. This research used a factorial randomized block design (RAK) consisting of 2 treatment factors with 16 combinations and 3 replications to obtain a total of 48 plots. The parameters observed in this study were Vegetative Growth which consisted of flower age, plant height, number of leaves, root length, leaf area, stem diameter, net assimilation rate, fresh and dry root weight, shoot fresh and dry weight, plant growth rate. . The second observation is production which consists of cob length, cob diameter, cob weight per sample, cob weight with sample husks/plants. The research results showed that the results of the analysis of trichocompost fertilizer content were Nitrogen 1.93%, P2O5 1.93%, K2O 3.56; C-Organic 25.35%; Cu 23.29 Ppm, Fe 0.23%, Mn 181.95 Ppm, Zn 0.01 Ppm, pH 8.71, and water content of 50.50%. Furthermore, the results of the analysis of the eco enzyme fertilizer content are Nitrogen 0.25%, P2O5 0.02, K2O 0.04; C-Organic 0.93%; Cu >0.0002 Ppm, Fe 34.44 Ppm Mn 4.43 Ppm, Zn 0.01 Ppm, pH .25. The use of fruit waste as liquid organic fertilizer and cow dung as organic fertilizer is effectively used to increase the growth rate and productivity of corn plants, especially galss gem corn.
IDENTIFICATION AND MORPHOLOGICAL CHARACTERIZATION OF PERONOSCLEROSPORA MAYDIS CAUSING DOWNY MILDEW ON MAIZE IN LANGKAT AND SIMALUNGUN REGENCIES Rohayati Sitanggang; Syamsafitri; Noverina Chaniago
International Journal of Social Science, Educational, Economics, Agriculture Research and Technology (IJSET) Vol. 4 No. 12 (2025): NOVEMBER
Publisher : RADJA PUBLIKA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54443/ijset.v4i12.1531

Abstract

Downy mildew, caused by oomycetes of the genus Peronosclerospora, is the most destructive biotic threat to maize cultivation in Indonesia, with the potential to cause up to 100% yield loss. Accurate species identification is crucial for determining effective control strategies. This study aimed to identify and characterize the Peronosclerospora spp. responsible for downy mildew in eight survey locations across Langkat and Simalungun Regencies, North Sumatra. The research involved field surveys and laboratory microscopic observations to analyze qualitative (morphological) and quantitative (morphometric) parameters. Identification results indicated that all pathogen isolates from the eight locations were Peronosclerospora maydis. Morphologically, the pathogen featured hyaline conidiophores that were clustered, with 2–4 dichotomous branches. Morphometrically, structural variations were observed, with conidiophore lengths ranging from 150–550 µm and conidial diameters between 17–23 x 27–39 µm. Conidia were predominantly spherical to subspherical with thin cell walls. These dimensional variations are suggested to be influenced by external factors such as local agroclimatic conditions and host genotypes. This study confirms that P. maydis remains the primary pathogen causing downy mildew in North Sumatra.
Co-Authors Amalia Asmanizar DARMA BAKTI NASUTION Fenty Maimunah Simbolon Indra Gunawan Khairil Hanif Lisnawita Mahyuddin Dalimunthe May Ryan Sandi Muhammad Rizwan Murni Radiah Murni Sari Rahayu Noverina Chaniago Nurhayati RADITE TISTAMA Rahmi Dwi Handayani Rambe Rohayati Sitanggang Romi Fahri S. Edy Sumantri Sri Hafnida Ritonga Sulaiman Ginting Tri yuslisa sirait