scholarly journals Traditional Selection Potato Varieties and Their Resistance to the 28-punctata Potato Ladybug Henosepilachna vigintioctomaculata (Coleoptera: Coccinellidae) in the Southern Russian Far East

2022 ◽  
Author(s):  
N.V. Matsishina ◽  
P.V. Fisenko ◽  
M.V.Ermak . ◽  
O.A. Sobko ◽  
D.I. Volkov ◽  
...  
Keyword(s):  
Laboratory Experiments ◽  
Field Experiments ◽  
Russian Far East ◽  
Far East ◽  
Potato Cultivars ◽  
Breeding Value ◽  
Potato Varieties ◽  
New Varieties ◽  
Morphological Anomalies ◽  
Duration Of Development

Background: Henosepilachna vigintioctomaculata is a polytrophic pest, causing the greatest damage to plants from the nightshade family. The study aimed to research the resistance of potato cultivars that are promising for breeding to damage by a potato ladybug in laboratory and field experiments. Methods: In laboratory experiments, the indicators of fertility, mortality and duration of development, morphological anomalies and the effect of potato varieties on the composition of Epilakhna’s hemolymph were studied. The sample consisted of 50 individuals with a slight predominance of females. The experiment used 13 varieties of potatoes. Result: A specific dependence of the frequency of phytophage anomalies on the variety was revealed. The influence of nutrition on survival and the timing of ontogenesis has been established. The results obtained indicate the high breeding value of the material when recommending it for cultivation in regions with a high number of pests, as well as when creating new varieties.

Effect of Biochar on Soil CO2 Fluxes from Agricultural Field Experiments in Russian Far East: A Recent Study

2021 ◽  
pp. 20-31
Author(s):  
M. A. Bovsun ◽  
S. Castaldi ◽  
O. V. Nesterova ◽  
V. A. Semal ◽  
N. A. Sakara ◽  
...  
Keyword(s):  
Field Experiments ◽  
Russian Far East ◽  
Far East ◽  
Co2 Fluxes ◽  
Agricultural Field ◽  
Soil Co2

scholarly journals Effect of Biochar on Soil CO2 Fluxes from Agricultural Field Experiments in Russian Far East

Agronomy ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 1559
Author(s):  
Mariia A. Bovsun ◽  
Simona Castaldi ◽  
Olga V. Nesterova ◽  
Viktoriia. A. Semal ◽  
Nikolay A. Sakara ◽  
...  
Keyword(s):  
Field Experiments ◽  
Agricultural Soils ◽  
Russian Far East ◽  
Far East ◽  
Co2 Flux ◽  
Climatic Conditions ◽  
Agricultural Field ◽  
Soil Co2 ◽  
Cropping Seasons ◽  
Co2 Flow

Agricultural soils are a major source of greenhouse gases. Biochar is a soil improver and, when applied to the soil, sequesters carbon. However, a different combination of soil and climatic conditions and biochar leads to different research results. In this research, the effects of 1 kg/m2 and 3 kg/m2 biochar application to clay soils on the CO2 flow in field experiments along two cropping seasons in the Russian Far East were investigated. Data showed that biochar significantly reduces the cumulative flow of soil CO2, compared with untreated field plots. In 2018, the greatest reduction in soil CO2 emissions (28.2%) with 3 kg/m2 of biochar was obtained, while in 2019, the greatest decrease in the cumulative CO2 flow at the application dose of 1 kg/m2 (57.7%) was recorded. A correlation between a decrease in the value of the cumulative CO2 flux and an increase in the biomass grown in the studied areas of agricultural crops during the season of 2018 was found.

Selection of the Area of Window Openings of Residential Buildings in Conditions of Monsoon Climate of the Far East of the Russian Federation and Northern Areas of China

2019 ◽  
pp. 27-33
Author(s):  
Aleksei K. Solovyov ◽  
Bi Guofu
Keyword(s):  
Residential Buildings ◽  
Russian Far East ◽  
Far East ◽  
Heat Losses ◽  
Natural Light ◽  
Monsoon Climate ◽  
Northern Areas ◽  
Artificial Illumination ◽  
Heat Penetration ◽  
Large Heat

The term “window” in architecture usually stands for an opening in a wall or roof for penetration of natural light, sunrays and fresh air in premises. Recently, the requirement of contact with environment is added to this condition. It is especially relevant for residential buildings where rooms are considered residential if they have windows. The energy consumption of a building depends on sizes, form and location of windows. In winter, windows cause huge heat losses, in summer, on the other hand, large heat enters a building via the windows and is required to be removed by means of air conditioning. Moreover, windows are used for penetration of natural light in premises, which assists in saving of large amounts of power for artificial illumination. This article discusses partial solving the problem of the energy efficiency of residential buildings by determining the most efficient area of windows in terms of energy spending for compensation of heat losses via windows in winter, elimination of heat penetration through them in summer and energy losses for artificial lighting throughout the year. The analysis of the results of calculation of power consumption for residential premises in conditions of monsoon climate of the Russian Far East and Northern areas of China (PRC) is provided.

Tax debt as a threat to the economic security of the Russian Far East

2020 ◽  
Vol 13 (2) ◽  
pp. 216-242
Author(s):  
V.A. Yakimova ◽  
A.A. Orekhova
Keyword(s):  
Russian Far East ◽  
Consumer Price Index ◽  
Far East ◽  
Federal District ◽  
Economic Security ◽  
Factors Affecting ◽  
Correlation And Regression Analysis ◽  
Debt Collection ◽  
Far Eastern ◽  
The Russian Far East

Subject. The article addresses the tax liabilities of taxpayers registered in the subjects of the Far Eastern Federal District, which should be paid to the consolidated budget of the Russian Federation, as well as the factors of the said debt growth. Objectives. Our aim is to assess the level of tax debt of regions of the Russian Far East and identify the correlation between the factors and the amount of tax debt. Methods. The study rests on methods of analysis, generalization, grouping, systematization, and the correlation and regression analysis. Results. We analyzed the level of tax debt for the entire Far Eastern Federal District and by region, identified factors affecting the growth of tax debt therein. The paper assesses the structure of tax debt by type of taxes and activity of debtors. The unveiled factors may help control changes in the size of tax debt in the Russian Far East and develop effective measures to improve the debt collection. Conclusions. The study shows that there is an increase in the tax debt in the regions of the Russian Far East, in the VAT in particular. The factor analysis revealed that the volume of sales of wholesale enterprises, investment in fixed capital, the consumer price index have the largest impact on the amount of tax debt.

New records and rare alien species in the flora of the Russian Far East

2018 ◽  
Vol 65 ◽  
pp. 89-102
Author(s):  
Z.V. Kozhevnikova ◽  
◽  
A.E. Kozhevnikov ◽  
Keyword(s):  
Alien Species ◽  
New Records ◽  
Russian Far East ◽  
Far East ◽  
The Russian Far East

New invasive species Acanthoscelides pallidipennis (Motschulsky, 1874) (Coleoptera: Bruchidae) in the fauna of the Russian Far East

2018 ◽  
Vol 360 ◽  
pp. 25-28 ◽  
Author(s):  
A.V. Kuprin ◽  
◽  
N.A. Kolyada ◽  
D.G. Kasatkin ◽  
◽  
...  
Keyword(s):  
Invasive Species ◽  
Russian Far East ◽  
Far East ◽  
The Russian Far East

ON CHROMOSOME NUMBERS IN THE GRASS FAMILY (POACEAE) IN RUSSIA, WITH SPECIAL ATTENTION TO THE FAR EAST

2020 ◽  
Vol 68 ◽  
pp. 29-64
Author(s):  
N.S. Probatova ◽  
Keyword(s):  
Chromosome Numbers ◽  
Russian Far East ◽  
Far East ◽  
Grass Species ◽  
Original Material ◽  
Mountain Regions ◽  
Grass Family ◽  
The Far East ◽  
The World ◽  
The Russian Far East

The paper summarizes information on chromosome numbers (CNs) of the Grass species (Poaceae) in the flora of Russian Federation, obtained on the original material, most part - from the Russian Far East (RFE). In some species the CNs are known in Russia or in the world only from RFE, in some – from one locality or few, or from one subregion of RFE. The grass species in RFE often occur in mountain regions and near seacoasts; some species are endemics, some were studied near the limits of their geographical distribution areas. The diversity of CNs, the special features of the CNs distribution in some grass groups are discussed. The alien species are abundant in RFE, and their CNs are also involved in the study. For karyologically polymorphous species further studies are needed.

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