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All Journal Bernas International Journal of Social Science, Educational, Economics, Agriculture Research, and Technology (IJSET) International Journal of Educational Research Excellence (IJERE) Jagur: Jurnal Agroteknologi
Noverina Chaniago
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Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Computer Science & IT Economics, Econometrics & Finance Education Environmental Science Languange, Linguistic, Communication & Media Social Sciences Other

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EFFICIENCY OF NPK FERTILIZATION AND ADDITION OF BIODIVE FERTILIZERS ON THA PRODUCTION OF SOYBEAN (Glycine max (L) Merill) Fenty Maimunah Simbolon; Muhammad Rizwan; Noverina Chaniago; Surya Agus Efendy
International Journal of Educational Research Excellence (IJERE) Vol. 1 No. 2: July-December 2022
Publisher : PT Inovasi Pratama Internasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55299/ijere.v1i2.647

Abstract

This research was carried out at the Experimental Garden of the Faculty of Agriculture, Islamic University of North Sumatra, Jln. Eka Warni, Medan Johor District, Medan Municipality with a height of ± 25 meters above sea level with flat topography. The aim of the research was to determine the effect of providing biological fertilizer by reducing the dose of NPK fertilizer on soybean crop production. This research used the Factorial Randomized Block Design (RBD) method with two factors studied, namely: The first factor is bio quality (H) biological fertilizer which consists of 2 treatment levels, namely H 0 (Control), H 1 (10 cc/l water); The second factor is NPK fertilizer with 4 treatment levels, namely N 0 (Control), N 1 (20 g/plot), N 2 (40 g/plot) and N 3 (60 g/plot). The parameters observed were the number of pods per plant, seed weight per plant, production per plot and weight of 100 seeds. The results of the research showed that the application of bio quality biological fertilizer had a significant effect on production per plot and the number of pods per plant, but had no significant effect on the weight of seeds per plant and the weight of 100 seeds. Providing NPK fertilizer had a significant effect on the number of pods per plant and seed weight per plant , but had no significant effect on production per plot and the weight of 100 seeds. Meanwhile, the interaction between biological fertilizer and NPK fertilizer had a significant effect on production per plot and seed weight per plant, but had no significant effect on the number of pods per plant and the weight of 100 seeds.
THE EFFECTIVENESS OF COCOPEAT AS A PLANTING MEDIA ON THE GROWTH OF SOME OIL PALM VARIETIES (Elaeis guineensis Jacq) Fenty Maimunah Simbolon; Noverina Chaniago; Abdul Hakim Hutasuhut
International Journal of Educational Research Excellence (IJERE) Vol. 1 No. 1: First Published June 2022
Publisher : PT Inovasi Pratama Internasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55299/ijere.v1i1.658

Abstract

The purpose of the study was to determine the growth of several oil palm to the application of cocopeat as a growing medium. This research was carried out at the Experimental Garden of the Faculty of Agriculture, Islamic University of North Sumatra, Medan, which is located on Jalan . Karya Wisata, Johor Building, Medan Johor District, Madya City, North Sumatra Province with an altitude of ± 25 m above sea level, air humidity (RH) 68% and flat topography. The research was carried out from January-March 2016. This research used a factorial randomized block design (RBD) with two factors, namely: Cocopeat as a planting media mixture consists of 4 levels: C0 = Topsoil (Control) , C1 = Topsoil: cocopeat not soaked (2: 1) , C2 = Topsoil: cocopeat soaked in a bucket (2: 1) , C3 = Topsoil: cocopeat soaked in running water (2: 1) . The use of several varieties of oil palm consists of 3 levels: V1 = Simalungun SP540 DXP , V2 = Yangambi DXP PPKS718 , V3 = Langkat DXP Langkat. The research results showed that the growth of several oil palm varieties had no significant effect on all treatment parameters. The use of cocopeat had a significant effect on the number of leaves, but had no significant effect on plant height, leaf area , leaf chlorophyll, base weight and dry weight. Good growth was seen when cocopeat was soaked in C3 running water. The interaction of cocopeat with several oil palm varieties had a significant effect on the number of leaves of oil palm seedlings, whereas it had no significant effect on the other treatments.
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 Abdul Hakim Hutasuhut Algi Utama Ardiansyah , Arif Prandana Asmanizar Deddy Wahyudin Purba dedi kurniawan Edward Tri Nanda Elfin Efendi Fenty Maimunah Simbolon Firmansyah Hasibuan Irawati Chaniago Irfan Suliansyah Muhammad Rizwan Nalwida Rozen Namsen Sartonedi S Girsang Riki Zupriadi Rohayati Sitanggang Safruddin . Safruddin Safruddin Sri Susanti Ningsih Surya Agus Efendy Syafrizal Hasibuan Syamsafitri Yulita Inriyani