bluuebunny/crossref_metadata_2025_split huggingface dataset:
Increased growth and production of irrigated rice by providing cow organic manure and NPK compound fertilizers with planting systems Jajar Legowo 4:1 in the Village of Tanjung Keriahan, Langkat Regency, North Sumatera
Authors: Ginting J , Meiriani  , Sitepu F , Sipayung R , Ramadhan I A 
Published: April 2020

Abstract
Until now the average national rice production that can be achieved is around 4-5 tons/ha. To increase production that can be achieved above the national average, new efforts in agronomic technology are needed to overcome it. One of the efforts that can be done is to examine the utilization of organic cow manure and NPK fertilization with the Jajar Legowo 4: 1. The purpose of the study is to obtain the optimum dose of cow manure and NPK compound fertilizer with high rice production achievements. The study was conducted in the Irrigated Rice Region of Tanjung Keriahan Village, Langkat Regency, North Sumatra Province. The study used Randomized Block Design with fertilizer treatment for organic materials in cow 4 levels of dosage: 0, 5, 10, 15 tons / ha and NPK compound fertilizer application with 5 treatment doses: 0, 100, 200, 300, 400 kg / ha. The results showed that the growth and development of rice plants Mekongga variety that were studied were best shown in the giving of 15 tons/ha of cow manure and NPK fertilizer application of 400 kg/ha.
Abundance and diversity of bacteria associated with healthy and infected oil palm rhizosphere of Ganoderma boninense in Bahilang, North Sumatra
Authors: Lisnawita  , Safni I , Lubis K , Nurliana  , Fadly F 
Published: April 2020

AbstractBasal stem rot (BSR) caused by soil-borne pathogen, Ganoderma boninense, is one of the constraint factors in palm oil production in the world. The presence of rhizosphere microbes such as bacteria is an important factor whose presence can be beneficial to plants or become a pathogen. Unfortunately, information about the abundance and diversity of bacteria associated with healthy and infected oil palm rhizosphere ofG. boninenseis still limited. This research aims to compare the abundance and diversity of bacteria associated with healthy and infected oil palm rhizosphere ofG. boninense. Soil samples were taken from a healthy and infected oil palm rhizosphere in the Bahilang, North Sumatra. The results showed that the abundance and diversity of bacteria from the healthy rhizosphere were higher than infected rhizosphere. In a healthy rhizosphere, the abundance and diversity of bacteria were higher at soil depths of 10-20 cm compared to soil depths of 0-10 cm. Otherwise, the abundance and diversity of bacteria in the infected rhizosphere were higher at depths of 0-10 cm.
Ability test of endophytic fungi to suppress the development of anthracnose disease (Colletotrichum capsici) in chili plants (Capsicum annum) in the Karo Highland
Authors: Hutauruk I C P , Hasanuddin  , Pinem M I 
Published: April 2020

Abstract
Anthracnose is one of the important diseases in chili plants. One way to control this disease is using endophyte fungi. The aim of this research was to examine the ability of endophytic fungi to suppress the development of anthracnose disease in chili plants in the Karo Highland. This research was conducted at the Rajapayung village, Sub-District Berastagi, District Tanah Karo, North Sumatera and at Plant Pathology Laboratory, Agrotechnology Study Program, Agriculture Faculty, USU. This research used Factorial Randomized Group Design method with 2 factors, 27 treatments and 2 replications. The first factor was the application method: application to seeds (A1), application on leaves (A2), and apllication on fruit (A3) while the second factor was the kind of isolates endophyte fungus. The results of the isolation were Trichoderma sp., Rhizoctonia sp., Aspergillus sp., Penicillium sp., Gliocladium sp., Hormiscium sp. The results of this research showed that the lowest of percentage disease anthracnose in last observation was in the application on leaves treatment (5, 36 %) and treatment with Penicillium sp. (0.00 %). The highest plant height was in the treatment with a application on leaves with unknown hyphae (112.08 cm). The highest production was in the application on leaves treatment (0.58 ton/ha).
Effect of gamma irradiation on harvest date of local upland red rice cultivar
Authors: Muhidin  , Syam’un E , Kaimuddin  , Musa Y , Sadimantara G R , Leomo S , Sutariati G A K , Yusuf D N , Rakian T C 
Published: April 2020

AbstractRice is a carbohydrate sources and main staple food in Asia including Indonesia. The aim of the study is to assess the effect of gamma irradiation on the harvest date of upland rice. Common problems in cultivation of upland red rice are low production and long harvest life. One of the solutions is through the breeding mutation. The research was conducted in Field Experiment Faculty of Agriculture, Halu Oleo University. The research used a split plot design, as main plot was the irradiative treatment and the sub plot was the different of cultivar in three replications. The irradadiative treatment consist of two levels, i.e. b0=without gamma irradiation, b1= treatment with gamma irradiative. The cultivar tested are (v1) =Labandiri, (v2) =Jangkobembe, (v3) =Ranggohitam, (v4) =Paedara. The research reveals that gamma irradiation treatment could accelerate the plants to reach the age of flowering, simultaneity of flowering, seed filling period, and harvest date.
Isolation and screening test of indigenous endophytic bacteria from areca nut rhizosphere as plant growth promoting bacteria
Authors: Sutariati G A K , Rahni N M , Mudi L , Nurlina  , Hamriani  , Yusuf D N , Muhidin  , Zahrima  
Published: April 2020

Abstract
The study aimed was to find out the endophytic bacteria isolated from areca nut rhizosphere in Southeast Sulawesi. The study was conducted at the Agronomy Laboratory, Faculty of Agriculture, Halu Oleo University. It using a completely randomized design (CRD) consist of four serial treatment of isolates isolated from 4 regencies. The isolates have tested their ability to improve viability and vigour of rice seed. The rice seeds before application, treated with endophytic bacteria isolates and then germinated. The germination rate was recorded daily by seven days. Each treatment using three replications, and data result were analysed using analysis of variance (ANOVA) and followed with DMRT (Duncan’s Multiple Range Test). The result showed that the treatment of endophytic bacteria on rice seed has significantly increased the viability and vigour of rice seed. It also found four selected isolates which have potential to increase of rice seed growth, namely ME4, WSE4, WSE15, LE7, and LAE2. The future research is needed to find out the isolate that has effectivity on increase of areca nut seedling growth.
Analysing suitability of arable land within a convertible production forest (HPK)
Authors: Yusuf D N , Muhidin  , Leomo S , Hasid R , Muslim S 
Published: April 2020

Abstract
Potential land resources become one basic information needed in planning agroecological system development. The purpose of this study was to analyse the suitability of arable land in a convertible production forest area (HPK) in Konawe Kepulauan Regency, Southeast Sulawesi Province. Identification of arable land types and determination of agroecological zones was using spatial analysis through SPOT satellite imagery processing and slope map overlays and soil types to determine arable land units. Existing plant species were recorded and adjusted to the direction of land use from the Agricultural Research and Development Agency. From this study, 30 units of fertile land were obtained covering an area of 12,873.69 ha and spread across six zones, namely zone I covering 182.95 ha (1.42%), II covering 3,102.10 ha (24.10%), III covering 3,125.83 ha (24.28%), IV covering 3,594.36 ha (27.92%), V covering 631.85 ha (4.91%) and VI covering 2,236.61 ha (17.37%) with the distribution of plant species in the form of natural forests, annual crop agriculture, seasonal crops, agroforestry crops and food crops. Plants in zones I, II and III in accordance with the direction of land use but Zones IV, V and VI still not suitable.
Preface
Authors: Solovev D B 
Published: April 2020

International science and technology conference “Earth science” (ISTC Earth Science) it is a subsection of a big conference the International Scientific Conference “FarEastCon” took place on October 1-4, 2019 in Vladivostok, Russian Federation.
The conference represents an informational platform for accumulation of expert opinion on projects and initiatives that are aimed at implementation of farsighted scientific research and development; it allows to present scientific and practical achievements to a wide circle of researchers.
Sections of the conference are of interest for the broad range of experts in the sphere of development of innovative solutions and organizing events that increase the efficiency of economic and innovative activities.
Evaluation of the Seasonal Variability of Nutrient in Water of Kuibyshev Reservoir
Authors: Minakova E A , Shlichkov A P , Iliasova A V 
Published: April 2020

Abstract
On the basis of generalization and analysis of long-term data, the peculiarities of the processes of pollution by nutrients of the waters of the Kuibyshev reservoir were studied and the specificity of the seasonal variability of nutrients was revealed. It was revealed that all the nutrients in the water of the Kuibyshev reservoir are characterized by seasonal variability, which is most pronounced in nitrate ions. The results of the study show that in 2009-2015 yrs perennial average monthly concentrations of nutrients did not exceed the fishery standards in the water of the Kuibyshev reservoir.
Driving Heavy Trains on the Kuzbass to Far East Route
Authors: Shirokova V V , Kuzmina N A , Odudenko T A , Sankova G V 
Published: April 2020

Abstract
This paper examines a railroad system intended for heavy trains; it dwells upon how the freight traffic is expected to evolve by 2030. This paper results research into specific conditions for heavy haul on the Kuzbass to Far East route and wells upon optimizing such haul on specific legs of the route.
Features of Structural Formation and Properties of Technogenic Raw Materials in Construction Material Production
Authors: Tokach Yu E , Evtushenko E I , Vyrodov O S 
Published: April 2020

Abstract
The paper reveals regularity in solid phase materials property change depending on their capability of structural changes. A classification of technogenic waste is proposed that takes into account the condition of their production (biogenic, chemogenic, pyrogenic and mechanogenic) and nature of structural and property changes. Technogenic wastes may serve and are already serving as a source of raw materials for industry. Recommended waste conversion technology for production of construction materials is given for each group of waste. As an example, a possibility of pyrogenic waste conversion and recovery that takes into account the structural instability of the materials is shown. In this case, the structure may be stabilized by a corresponding method of primary processing or the existing structural instability may be used in the composite synthesis technology. A rational recovery scheme that influences the structure of the material is proposed for chemogenic waste in the form of galvanic sludge. Recovery of galvanic sludge may proceed both with and without extraction of metals as additional product.
Assessment of Adverse Engineering Geological Conditions during Seismic Microzonation of the Sentachan Mining and Refining Facility (Eastern Yakutia)
Authors: Grib N N , Imaev V S , Syasko A A , Grib G V , Kolodeznikov I I 
Published: April 2020

Abstract
In this study, the authors used complex seismotectonic, geological and geophysical methods when carrying out scientific research, identifying unfavourable engineering geological conditions for the designed mining facility located in the cryolithozone, as well as when determining the level of basic seismic hazard and performing seismic microzonation. The seismotectonic methods consisted in establishing the relationship between the distribution of local earthquake epicentres and active geological structures. The geophysical studies employing the methods of near-surface seismic tomography and electrical resistivity tomography allowed obtaining of detailed and reliable information on the features of the engineering geological structure of the studied site required to assess the influence of soils on the seismic wave attenuation of possible earthquakes in the region, thus solving the issue of seismic microzonation.
Seismotectonic studies consisted in determining the level of basic seismic hazard and were based mainly on previous field studies summarised in a number of published works, some of whose conclusions were used in this article.
The analysis of geophysical data allowed the authors to establish probable location of the distributions of ice and ice-rich permafrost, as well as the heterogeneity of soil conditions that affect their behaviour under dynamic loads.
The calculated values of probable earthquake intensities allowed the authors to determine the level of maximum earthquake intensity at the designed industrial sites of the mining and refining facility.
Improving the Technology of Cadastral Appraisal of Agricultural Lands with the Account of Environmental Factors
Authors: Kharitonov A A , Vikin S S , Ershova N V 
Published: April 2020

Abstract
The analysis of regulatory framework governing the appraisal activities in the Russian Federation suggests that at present all the conditions have been created for performing high-quality appraisal works. However, the authors believe that the system of cadastral appraisal of agricultural lands is not free of shortcomings, which lead to a conflict of interests between the taxpayer and the tax recipient. On the one hand, the profitability of agricultural land is determined by the purchase price for the products being produced, which in its turn depends on its content of various types of pollutants, including lead oxides. It is known that this type of pollutant enters the soil (and then the agricultural products produced on it) from the atmospheric air. In the course of research it was revealed that the main source of this kind of pollution is road transport. This problem is not fully solved by the so-called right-of-ways, forest belts and protective shields created in the process of designing roads. There is an obvious environmental damage that does not depend on the actions or inactions of both the owner of the land and the manufacturer of products. On the other hand, this factor is not by any means taken into account when determining the quality of land in the process of calculating the cadastral value of agricultural lands, particularly when determining the value of agricultural land and arable land in the first place. The authors propose a technology for adjusting the cadastral value of agricultural lands with the account of environmental factors. When calculating the cadastral value, this technology will allow taking into account not only the future revenues, but also the future potential costs that directly depend on the anthropogenic factor.
Feature of Syngenetic Succession in Technologically Disturbed Landscapes of Kabardino-Balkaria
Authors: Tamakhina A Ya , Dzakhmisheva I D , Akbasheva A A 
Published: April 2020

Abstract
The article presents the results of monitoring syngenetic succession on a toxic substrate of the tailings of the Tyrnyauz tungsten-molybdenum plant in 2001 and 2018. According to the features of succession processes on terraces of different ages, 3 types of ecotopes were distinguished: 1 - automorphic (eluvial) upper slopes; 2 - transit transeluvial of the middle part of the slopes; 3 - transelyuvial-accumulative foothills of the slopes. The delay in the beginning of the phases of succession and the duration of the stages of syngenesis grows in the series 3 → 2 → 1. In 2018, the state of vegetation cover corresponded to the initial stages of syngenesis and was characterized by a high level of synanthropization and apophytization of the flora. On the lower and middle terraces of the tailing, weeds and intruders dominate, not typical of the zonal flora. On the upper terraces ruderal and pioneer plants are found sporadically. The succession process on the technogenic substrate of the tailings takes place spontaneously and under extreme conditions, the onset of the final stages of natural demutation is problematic. In order to stabilize the technogenic ecotope, it is necessary to carry out the technical stage of recultivation (application of fertile layer on the ground) with the sowing of multi-species grass mixtures, the wild-growing components of which are most tolerant of the extreme substrate (Cirsium vulgare, Centaurea kubanica, Taraxacum officinale, Echium vulgare, Jurinea ciscaucasica, Inula germanica).
Information Support of System Monitoring and Complex Assessment of Forestlands in Industrial Regions
Authors: Lebedeva T A , Oleynikova L N 
Published: April 2020

Abstract
The need for systematic monitoring and complex evaluation of forest lands in industrial regions (on the example of the Urals and Western Siberia) is considered. The methodology of system monitoring and complex evaluation of forest lands on the basis of the concept of sustainable development of territories and biotic regulation of the environment, taking into account the widespread and long-term consequences of nature-land-forest management, modeling of natural objects, phenomena and processes, combining data collection and processing procedures with models of structural elements of forest lands with algorithms of forecasting and decision-making is presented. The scientific and technological principles of system monitoring and information support of complex evaluation of forest lands in industrial regions are considered. The results of using a sound methodology and the proposed principles of system monitoring and complex evaluation of forest land in industrial regions in solving practical problems are presented: substantiation of the concept of environmental safety of the development of the Middle Urals, the role of the natural potential of forest lands in the national accounts structure, the formation of sustainable subsoil use.
Exogenous Challenge in Yakutian Permafrost Areas: Analysis and Forecast
Authors: Pomortseva A A , Pomortsev O A , Trofimtsev Yu I 
Published: April 2020

Abstract
The paper discusses exogenous processes and dangers associated with their intensification on the plains and in the mountains of Yakutia in the XXI century. It has been established that these processes result from natural and climatic anomalies caused by changes in the climate. The first wave of hazardous exogenous processes swept over the plains of Central Yakutia at the beginning of the XXI century (from 2002 to 2004). This wave was triggered by a series of dry summers, which caused forest fires of unprecedented scale and the subsequent intensification of freeze-thaw processes in the areas impacted by the fires. The second exogenous wave which impacted the area a decade later (from 2012 to 2015) was triggered by positive anomalies caused by an increase in atmospheric humidity. The impact of this wave was especially vivid in mountainous areas, in the spurs of the Verkhoyansk Range in particular, where significant damage was caused to roads and other linear structures. A key role in the intensification of slope processes was played by seasonal flooding and suprapermafrost water processes which triggered large-scale landslides of Quaternary sediments. It has been found that climatic and exogenous anomalies can be attributed to solar maxima and minima in 11-year (Schwabe-Wolf) solar cycles. It can be expected that the next exogenous wave will hit the area at the maximum of the current 11-year cycle from 2023 to 2025.
Possibility for Uranium Mineralization of the Trans Urals According to Regional Geochemical Data
Authors: Krinochkin L A , Krinochkina O K 
Published: April 2020

Abstract
The article discusses the prospects of hydrogenic uranium mineralization in the Trans Urals. Dolmatovskaya geochemical zone is mapped out and minerogenic potential of its anomalous geochemical areas (AGCAs) is estimated from experimental data. A total of twelve ACGAs are ranked by prospectivity using values of minerogenic potential and other geochemical parameters. Minerogenic potential iscalculated from N.A. Bykhover’s formula using analogical models and can be equated to expected reserves. Previously studied Khokhlovsky AGCA is ranked promising and is expected to increase its potential uranium reserves. Previously unknown Garkashinsky and Petrovsky-Medvezhozersky ACGAs are identified as potential areas of medium prospectivity. These areas are geochemically identical to the anomalous geochemical fields of reference uranium ore locations in the zone in question, thus indicating p otential commercial uranium reserves.
Developing the Composition of Biodegradable Film for Food Packaging
Authors: Arutyunyants A A , Salamova N A , Simeonidi D D 
Published: April 2020

Abstract
Searching for new food packaging material that would have neutral physical and chemical properties, would not be toxic, and would be degradable is a relevant problem for contemporary science. Biodegradable polymers are usually produced by polymerizing biological raw materials. This property of new materials will help solve the problem of waste. The authors produced an elastic film that does not crack when bent, recovers its original shape when unbent, can take virtually any shape, and has no smell and a neutral taste. The authors tried to assess the degradation of films in the natural environment. The film produced can be used for the manufacturing of biodegradable packaging for the food industry.
Controlling the Tribological State of Contact Surfaces between Rolling Stock Wheels and Rails
Authors: Trifonov A V , Kossov V S , Panin Yu A 
Published: April 2020

Abstract
Based on the analysis of Russian and foreign works on the theory of the rolling stock and track interaction and studies in the field of reducing wheel and rail wear, rational friction coefficients on contact surfaces between rolling stock wheels and rails to lubricate rails depending on the conditions of applying rolling stock traction and brake have been defined. The computer simulation of nonlinear 3D vibration of rolling stock and track interaction has been used as a method of the study, which allows to take into account various tribological states of contact surfaces between rolling stock wheels and rails. The effect of reducing the rolling stock lateral impact on the track by reducing the friction coefficient between the rolling stock wheels and the low rail running surface and the high rail head lateral surface in curves of a railway track is proved. On the basis of the computer simulation the results are obtained that make it possible to formulate technical solutions in the field of the friction control at the wheel and rail contact, providing the reduction of energy costs for trains traction, operating costs to replace rails and to turn rolling stock wheelsets.
Static Strength Assurance Factor and Ensuring the Required Level of Structure Safety
Authors: Volokhov G M , Ovechnikov M N , Timakov M V 
Published: April 2020

Abstract
The relation of the static strength assurance factor with the probability of non-destruction of the structure is considered in this article. As a result, it becomes possible to assign the minimum allowed assurance factors, based on the need to ensure the given level of structure safety during operation.