A5076445877- Plant Growth and Agriculture Techniques
- Agricultural Development and Management
- Oil Palm Production and Sustainability
- Shallot Cultivation and Analysis
- Agricultural and Environmental Management
- Forest Ecology and Conservation
- Soil Carbon and Nitrogen Dynamics
- Food and Agricultural Sciences
- Peatlands and Wetlands Ecology
- Enzyme Production and Characterization
- Geotechnical and construction materials studies
- Composting and Vermicomposting Techniques
- Phosphorus and nutrient management
- Geological and Geophysical Studies
- Dengue and Mosquito Control Research
- Coastal Management and Development
- Agriculture and Agroindustry Studies
- Plant Growth Enhancement Techniques
- Community-based Tourism Development and Sustainability
- Plant Pathogens and Fungal Diseases
- Local Governance and Development
- Biological Control of Invasive Species
- Agricultural Science and Fertilization
- Oral health in cancer treatment
- Soil Geostatistics and Mapping
Universitas Sumatera Utara
2015-2024
State University of Medan
1970-2019
Palm Research Center
2015
Universiti Putra Malaysia
2009-2011
Plants require P nutrients to grow, develop, and produce yields. Andisols are often used as agricultural land, but this soil has low available high retention (97.8%). Using phosphate-solubilizing microbes (PSM) can increase phosphate solubility. The dissolution of by is greatly influenced environmental factors, one which pH. This research aimed determine the potential PSM from Andisol in qualitatively dissolving at various pH levels. study a completely randomized design with treatment factor...
Oil palm (Elaeis guineensis Jacq.) plantations generate a large quantity of by-products, such as empty fruit bunches (EFB) and fronds. These by-products are very difficult to decompose in natural condition. Vermicomposting these would be able provide some useful nutrients for crop growth. There was no information available on the composting condition oil using earthworms. Therefore, objective this study evaluate ability earthworms vermicomposting quality vermicompost. Only one species...
The aim of the research was to determine influence giving liquid biofertilizer and compound fertilizer NPK on growth oil palm seedling in pre nursery. had been conducted land Agriculture Faculty, Sumatera Utara University, Medan (42 m asl) February until June 2014, by using Randomized Block Design with two factors, i.e. (0, 5, 10, 15 ml/litre solvent) (0; 2,25; 4,5; 6,75 g/seed). Parameters measured were plant’s height, steem’s diameter, number leaves, total leaf area, wet shoot weight, root...
Gender equality is one of the UN sustainable development goals less discussed in soil science Indonesia. There limited information regarding education, and role women This study aimed to provide an overview issue gender Indonesian science. We surveyed number students, lecturers, researchers from 2016 2020. Twenty-seven undergraduate programs were identified across government-owned universities The students steadily increasing last five years, each year with about 1500 new enroll female also...
Background and Objective: Andisols has relatively low phosphorus availability due to its adsorption by allophane.Microbial phosphate solubilization organic matter are capable of producing acids that play a role in increasing the (P) availability.Phosphorus-solubilizing activity is determined ability microbes release metabolites such as acids, which through their hydroxyl carboxyl groups chelate cation bound phosphate, latter being converted soluble.This study was aimed obtain best type...
Abstract. Sembiring M, Sabrina T. 2021. Diversity of phosphate solubilizing bacteria and fungi from andisol soil affected by the eruption Mount Sinabung, North Sumatra, Indonesia. Biodiversitas 23: 713-719. Phosphate microbes are present in all locations with different population levels. The Sinabung 2013 resulted changes pH soil’s microbial population, such as microbes. This research aimed to obtain environmentally-specific derived impacted which excelled increasing availability phosphate....
The aim of the study was to elucidate role ameliorant application on chemical properties soil onion plants. This research carried out at Deli Sub-district area and analysis in technology laboratory North Sumatra University experimental garden Pembangunan Panca Budi Medan. includes land preparation, plant maintenance such as watering, improvement applications (biochar municipal waste compost) according treatment, weed control, insertion management pests.The used a randomized block design with...
The amounts of polyphenols at several stages oil palm empty-fruit bunch (EFB) composting, the types phenol compounds in EFB composting processes and effects on an earthworm population were evaluated under field conditions. amount extractable phenols from decomposed increased early stage decomposition decreased with increasing age compost. content soil added did not differ that control soil. Under open system presence soil, released easily degraded. empty fruit bunches into their...
Peat soil is a with low nutrient content, due to the weathering process of organic materials in peat land not taking place well. The characteristics can be observed its physical, chemical, and biological properties. This study aimed determine chemical Humbang Hasundutan Regency. soils include degree acidity (pH), nitrogen (N), phosphorus (P). samples were obtained from Lintong Ni Huta District, Dolok Sanggul Pollung District. results pH parameter testing 1 2 District 4.56, 4.42, 4.61, 4.68,...
AbstractThe use of oil palm empty fruit bunch, an agricultural waste from plantations, as a feeding material for earthworms during composting provides alternative source nutrients plants. Information regarding the ability in processing phosphorus-enriched bunch and their effects on plants is still lacking. The objective this study was to compare bunches applied fresh, composted or vermicomposted media supplying test crop, Setaria splendida L., grass planted Bungor (Typic Kandiudult) soil....
Abstract Ultisol have low organic matter content, acid pH, very available nutrients, and high Al, therefore compost application is needed as a source of nutrients for plants in Ultisol. Vermicompost, which produced from the decomposition certain by earthworms. However, there another decomposer that producing compost, Black Soldier Fly larvae, it called Kasgot (BSF compost). The new combination two types both Vermigot. This study aimed to examine vermicompost kasgot cow dung banana stems on...
This research aim to determine the effect of several source and dosage organic activators ondecomposition rate empty fruit bunch. study used a factorial randomized block design (RBD)consist two factors three replications. The first factor was activatorsconsist treatments (chicken manure, cow goat manure) second wasthe activator consist 4 (0, 15, 30 45% (w/w)). results showed thatthe best in decreasing C/N ratio compost chicken withdecomposition 10,77 unit/week. compostwas (w/w), with...
Phosphorus (P) is a macronutrient requirement by plants. P elements applied to the soil are quickly deposited into an insoluble form. Insoluble in can be converted available phosphate solubilizing microbes. One of factors that affect activity and growth microbes sound. This study aims isolate identify rhizosphere maize sound exposure. The research was conducted treatment without Al-Quran recitation maize, then isolated identified results obtained 11 isolates consisting three fungi eight...
ABSTRACT Potency of Azobacter and Mucuna bracteata forage in increasing the nitrogen content oil palm empty fruit bunch ( TKKS) compost. The management (TKKS) is still a problem. One alternative to utilize this by product composting, but there’s problem low nitrogen. can be added from N fertilizer, manure, or using N-fix microorganisms. research was aimed evaluate potential Azotobacter TKKS compost. done Factorial Randomized Block Design, consisting 2 factors 3 replication. first factor...
Changed soil conditions will result in the changed population and diversity soil. The eruption of Sinabung Mount caused surface covered with volcanic ash various thicknesses. This research was to study a description macrofaunal communities at different thicknesses on andisol Karo Regency. experiment conducted May 2017. plot located four locations, location I not by (0 cm), II thin (≤2 III medium (2-8 IV thick (≥8 cm) using transect sampling method. Samples collected Pitfall Trap, Monolith...
Abstract. Sembiribg M, Sabrina T. 2021. Diversity of non-symbiotic nitrogen-fixing bacteria and their potential in andisols affected by the eruption Mount Sinabung, North Sumatra, Indonesia. Biodiversitas 22: 3539-3544. Nitrogen is main macro-nutrient that very important for plant growth. absorbed plants form NO3-or NH4+ ions from soil. The Sinabung alter chemical, physical biological characteristics As a result, population beneficial microbes soil decreased, so fertility also decreased. aim...
P availability in soil is often be the limiting factor on plant growth and production. Phosphatesolubilizing organism one of alternative to solve this problem. The aim study was todetermine effect phosphate solubilizing fungi mycorrhizae their interaction toincrease absorption by Maize Alkaline Soil . This research conducted inthe green house, Biology laboratory Chemical Fertility Laboratory FakultasPertanian USU March-August 2013, used Randomized Block Design (RBD) factorial consistingof 2...
Abstract One of the characteristics Ganoderma disease is that it asymptomatic, visual symptoms appear when condition plant severe so early detection and identification become a fundamental problem. This study aims to identify by analyzing vegetation index NDVI, GNDVI, SAVI based on reflectance value oil palm images recorded with UAV vehicle equipped multispectral sensor 3 bands red (Red), green (Green), infrared (Near Infra Red) at 660nm, 550nm 850nm wavelengths. The software used Mission...