A5039216648- Plant Growth and Agriculture Techniques
- Natural Products and Applications
- Agricultural and Environmental Management
- Heavy Metal Pollution Remediation
- Geological and Geophysical Studies
- Soil and Land Suitability Analysis
- Agricultural Science and Fertilization
- Geotechnical and construction materials studies
- Oil Palm Production and Sustainability
- Remote Sensing and LiDAR Applications
- Shallot Cultivation and Analysis
- Plant and Fungal Species Descriptions
- Healthcare Quality and Satisfaction
- COVID-19 Prevention and Impact
- Date Palm Research Studies
- Plant Water Relations and Carbon Dynamics
- Advances in Cucurbitaceae Research
- Dengue and Mosquito Control Research
- Soil Carbon and Nitrogen Dynamics
- Rice Cultivation and Yield Improvement
- Varied Academic Research Topics
- Medicinal Plant Research
- Plant Pathogens and Fungal Diseases
- Agricultural Development and Management
- Forest ecology and management
University of North Sumatra
2017-2024
State University of Medan
1970-2018
Université du Québec en Outaouais
2006
Tree ring analysis provides useful data for dendrochnologists that can help them better understanding of climatic and environmental changes. Yet detection counting rings in cross section tree were realized manually which is time consuming tedious work. Our research was motivated by the need a fast accurate method. This paper describes semi automatic approach areas measurement based on 2D gray scale image analysis. Best results are obtained with developed procedures. A newly algorithm well...
Penelitian ini bertujuan untuk mengetahui pengaruh pemberian bahan humat dan pupuk P meningkatkan ketersedian di tanah ultisol. terdiri dari 2 faktor perlakuan ulangan. Faktor pertama dengan 4 (0, 400, 800, 1200 ppm) kedua (100%, 75%, 50%, 0% rekomendasi). Hasil penelitian menunjukan bahwa pH, P-tersedia, menurunkan Al-dd dosis terbaik 800 ppm bobot kering akar tajuk, P-daun Aldd 75% rekomendasi. Interaksi antara tidak nyata terhadap semua parameter yang diamati.
Abstract Potasium and nitrogen fertilization accompanied by the application of rice straw compost is expected to improve chemical properties fields growth plants. The purpose this research find out effect potassium, fertilizer on increasing C-organic, organic matter K-exchangeable soil This was conducted in field area Cengkeh Turi village, Binjai City (± 32 m asl) from March-July 2018. study used factorial randomized block design method with 3 Factors: Potassium (KCL): 0. 25. 50 75 kg ha −...
Abstract Fires in peatland have numerous detrimental effects as regards degradation of the environment especially changes soil properties. The purpose this study is to ascertain how drying and rewetting peatlands affects physical chemical characteristics post-fire peat with two depths. This research was carried out Dusun XIII, Perbangunan Village, Sei Kepayang, Asahan Regency. factor re-wetting past fire peatland, namely: unburnt wet conditions (P-nw), post-burnt dry (P-bd), (P-bw) within 2...
Peatland serves as a crucial natural resource with hydrological and other environmental functions essential for all living organisms. In some regions, peat soil isn't limited to lowland areas, it is also found in highland areas. This study survey research aiming examine the characteristics of peatlands Toba North Sumatera, namely Village Matiti II, Humbang Hasundutan Regency, Sumatera control general Sidomulyo Village, Bilah Hilir Subdistrict, Labuhan Batu. The employed approach descriptive...
The research aims to determine the physical and chemical properties of soil in ecological zoning mangroves swamp land. This was carried out Kalangan Indah Village, Pandan District, Central Tapanuli Regency. implementation using an experimental method a non-factorial randomized complete block design (RAK) with 5 replications. treatment factors are (Vpl) Seagrass, (Vrh) Rhizophora apiculata, (Vny) Nypa fruticans, (Vav) Avicennia alba (Vco) Cocos nucifera. results showed that organic C, total N...
Abstract Entisol is one of the soils which not only poor in nutrients, especially Nitrogen and organic carbon, but also has an acidic pH low water-holding power due to sandy soil fraction hence additional conditioners are needed improve soil, such as hydrogel chicken manure material. This research aimed assess ability increase pH, N-nutrient, C-Organic moisture content soil. The was conducted a greenhouse using randomized block design with 2 factors, factor I consisting H0 = 0 g/polybag, H1...
This research attempts to improve the properties of backswamp peatsoil originated from Asahan District, North Sumatra Indonesia by adding sea water and zeolite using factorial randomized block design with volume as first factor, consisting without seawater, 500 ml, 1000 ml 1500 second factor are dosages zeolite, 100 g, 200 g each 10 kgs wet peat soil. at green house in faculty agriculture University Utara (USU) Medan, Indonesia. The result showed that application seawater decreased pH, C/N...
Penelitian ini bertujuan untuk mempelajari pemberian pupuk sesuai kebutuhan tanaman meningkatkan produksi padi sawah di Desa Tanjung Rejo Kecamatan Percut Sei Tuan dan kesuburan tanah melalui indeks hara. dilaksanakan lahan dimulai pada bulan Mei sampai dengan September 2017. menggunakan rancangan acak lengkap dua faktor 3 ulangan. Faktor pertama dosis (Urea, SP-36, KCl, Dolomit) 4 taraf yaitu P1 = 121,36 gram/Plot, P2 161,82 P3 202,27 gram/Plot,P4 242,73 kedua berdasarkan hara 5 B1 0,8...
Abstract North Sumatra Province still lacks shallots every year. the obstacles that are often encountered and seen in farmers’ fields disturbance of plant pests, generally diseases, especially fusarium basal rot disease. The purpose this study was to detect emergence Fusarium isolates from various sources infection locations against increasing attack bulbs occurred 2018 2019. Shallots cultivated on Karo regency Tongging Village, Rimokayu Tiganderket Village Payung Village. Statistical...
Abstract The aim of this research is to evaluate the influence urea fertilizer and different types amendments on form nitrogen in soil, growth rice plants, effectiveness fertilization lowland rice. was carried out at Faculty Agriculture’s Greenhouse Universitas Sumatera Utara. A factorial randomized block design employed study with two factors, namely, dose 0, 100, 200 kg N Ha −1 type amendments: Control (without amendment), Neem oil, Zeolite mix, coated. According findings, application had...
Abstract This research aims to know the characteristics of mahogany leaves as Biochar and its effect with urea fertilization on N status growth Corn ( Zea mays L.) in Ultisol. Mahogany Leaves (MLB) was made using retort pyrolysis method at 409 °C for 3 hours. carried out a greenhouse used Randomized Complete Block Design (RCBD) by 2 factors repetitions. Factor I, MLB: B0 (without MLB) B1 (40 tons MLB/ha) II, doses urea: N1 = 100, N2 200, N3 300 N4 400 kg urea/ha. The results showed MLB has...
In addition to the problem of low nutrient availability, bulk density is also an important limiting factor on peat soil. The aims this research was determine effect zeolite minerals and volcanic sand after leached by sea water as ameliorants changes soils improve fertility soil its effects rice that conducted in greenhouse. experimental design used factorial randomized block consist 2 factors, 1 type mineral with 3 treatments dosage 4 treatments. Result showed most effective ameliorant...
Abstract This research aimed to determine the effect of sewage sludge from industry and residential burnt garbage that applied Inceptisol as media for kangkong ( Ipomoea reptans L Poir). study was using a randomized block design consisted 2 factors. Factor 1 type with 3 treatments, namely L1 = in urban settlements, L2 Mabar Industrial Area (KIM), L3 Burnt Medan, Sumatera Utara. dosage D1 50%, D2 75% D3 100% replications. The result showed application taken industry, municipal, increased...