scholarly journals Chemicals Used in Southern Forest Nurseries

1996 ◽  
Vol 20 (3) ◽  
pp. 127-135 ◽  
Author(s):  
David B. South ◽  
Janusz B. Zwolinksi

Abstract Large-scale tree planting programs have placed a tremendous pressure on nursery managers to supply unprecedented numbers of seedlings. Inclusion of chemicals into seed production regimes have made it possible for southern pine nurseries to be the most productive in the world, in terms of both output per nursery and average cost per seedling. Nursery managers in the South rely on the use of fertilizers, fumigants, and pesticides to help keep production costs low. Judicious use of fertilizers can reduce the production of cull seedlings as well as increase field growth after outplanting. It has been our experience that investing in the use of pesticides and inorganic fertilizers provides a high rate of return for the nursery manager. South. J. Appl. For. 20(3):127-135.

Agriculture ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 494
Author(s):  
Riccardo Lo Bianco ◽  
Primo Proietti ◽  
Luca Regni ◽  
Tiziano Caruso

The objective of fully mechanizing olive harvesting has been pursued since the 1970s to cope with labor shortages and increasing production costs. Only in the last twenty years, after adopting super-intensive planting systems and developing appropriate straddle machines, a solution seems to have been found. The spread of super-intensive plantings, however, raises serious environmental and social concerns, mainly because of the small number of cultivars that are currently used (basically 2), compared to over 100 cultivars today cultivated on a large scale across the world. Olive growing, indeed, insists on over 11 million hectares. Despite its being located mostly in the Mediterranean countries, the numerous olive growing districts are characterized by deep differences in climate and soil and in the frequency and nature of environmental stress. To date, the olive has coped with biotic and abiotic stress thanks to the great cultivar diversity. Pending that new technologies supporting plant breeding will provide a wider number of cultivars suitable for super-intensive systems, in the short term, new growing models must be developed. New olive orchards will need to exploit cultivars currently present in various olive-growing areas and favor increasing productions that are environmentally, socially, and economically sustainable. As in fruit growing, we should focus on “pedestrian olive orchards”, based on trees with small canopies and whose top can be easily reached by people from the ground and by machines (from the side of the top) that can carry out, in a targeted way, pesticide treatments, pruning and harvesting.


2021 ◽  
Vol 65 (9) ◽  
pp. 98-107
Author(s):  
S. Zhukov ◽  
I. Kopytin ◽  
O. Reznikova

The goal of the article is to analyze the role of Saudi Arabia in the world oil market and in the world economy for a long historical period. It is shown that strategically behavior of Saudi Arabia always was and continues to be subordinated to ensuring the stable supply of oil into the world oil market. Under the Saudi Arabia leadership OPEC aims at pursuing an economically rational and responsible policy, supporting the balance of the demand for oil and its supply thus allow¬ing to avoid deep and lasting oil price decline. Until the very recently an important factor impacting the formulation of Saudi oil policy was maintaining of strategic interaction with the US. The restructuring of the world oil market driven by the shale revolution and nearing peak of global demand for oil have created new challenges for Saudi Arabia oil strategy. The OPEC+ situational agreement enacted since 2017 by OPEC and non-OPEC countries to voluntary reduce levels of oil production temporarily allows to keep a supply – demand balance in the world oil market preventing from substantial drop in oil prices. At the same time the agreement opens opportunities for competitors, first of all American producers of tight oil, to maintain and expand export niches. Shale revolution created a situation when oil interests of the US and Saudi Arabia came into open conflict. For political and strategic considerations, a price war in order to crowd American oil producers with their relatively high production costs out of the market is not a feasible option for the Kingdom. Attempts to transform the state oil company Saudi Aramco into a mega supermajor utilizing on the global economic and financial potential have failed as the leading international banks and corporations avoided the company’s IPO. The failure of Saudi Aramco partial privatization is a signal of a false start of a company to open the Saudi economy to large-scale in-flow of foreign investment. Paradoxically the long-term perspectives of Saudi Arabia crucially depend on how effectively it will use in the coming 10–20 years oil export earnings for diversification of national economy outside the oil sector. Acknowledgements. The article was prepared within the project “Post-crisis world order: challenges and technologies, competition and cooperation” supported by the grant from Ministry of Science and Higher Education of the Russian Federation program for research projects in priority areas of scientific and technological development (Agreement № 075-15-2020-783).


2010 ◽  
pp. 65-78
Author(s):  
A. Sarkisyants

The article investigates the world art market trends. It considers the main market indicators, comparative rate of return and the prospects of the market as well as the problems of art banking. Special attention is paid to the Russian art market.


2020 ◽  
Vol 10 (2) ◽  
pp. 103-106
Author(s):  
ASTEMIR ZHURTOV ◽  

Cruel and inhumane acts that harm human life and health, as well as humiliate the dignity, are prohibited in most countries of the world, and Russia is no exception in this issue. The article presents an analysis of the institution of responsibility for torture in the Russian Federation. The author comes to the conclusion that the current criminal law of Russia superficially and fragmentally regulates liability for torture, in connection with which the author formulated the proposals to define such act as an independent crime. In the frame of modern globalization, the world community pays special attention to the protection of human rights, in connection with which large-scale international standards have been created a long time ago. The Universal Declaration of Human Rights and other international acts enshrine prohibitions of cruel and inhumane acts that harm human life and health, as well as degrade the dignity.Considering the historical experience of the past, these standards focus on the prohibition of any kind of torture, regardless of the purpose of their implementation.


Author(s):  
Viktoriya Bondarenko

The level of economic development of entrepreneurship in any country in the world is crucial in increasing the competitiveness of the national economy in the world market of goods and services. The activities of economic entities are the driving force for the sustainable development of regions and their suburban areas, and they also impact the welfare of population. The article dwells on the analysis of scientific approaches to the regulation of economic development of enterprises in suburban areas of the region. The article analyzes the scientific approaches to the regulation of economic development of enterprises in suburban areas of the region. According to the well-known classics of the fundamental economic theory of entrepreneurship development (A. Smith, D. Ricardo, V. Laungard, A. Loria) the peculiarities of economic development of entrepreneurship in suburban territories of the region are determined by the possibility of distribution of surplus production, minimum production costs per unit of production, availability of labor resources. In modern economic theory (M. Weber, A. Pre, S.M. Kimelberg, E. Williams, C. Vlachou, O. Iakovidou, J. van Dijk, P. Pellenbarg) the development of entrepreneurship in suburban areas of the region can be determined by institutional, innovation, technological, social, ecological and other features of the economy at the regional, state or world levels. The complex and comprehensive generalization of the features of economic development of entrepreneurship in suburban areas is proposed. There are (1) the type of decision taken by an enterprise to carry out business activities in the relevant suburban area of the region, and (2) the influence of internal and external factors on economic activity. The article argues that large enterprises are guided by more objective decision-making reasons, attaching the most importance to the physical and innovative environment. Medium and small enterprises are mainly focused on getting benefits for the entrepreneur in the short-term time period and location in the nearest geographic area. The attention was paid to the tools of ensuring economic development of entrepreneurship in suburban areas of the region, taking into account institutional changes in the national economy and the experience of developed countries of the world.


Epidemiologia ◽  
2021 ◽  
Vol 2 (3) ◽  
pp. 315-324
Author(s):  
Juan M. Banda ◽  
Ramya Tekumalla ◽  
Guanyu Wang ◽  
Jingyuan Yu ◽  
Tuo Liu ◽  
...  

As the COVID-19 pandemic continues to spread worldwide, an unprecedented amount of open data is being generated for medical, genetics, and epidemiological research. The unparalleled rate at which many research groups around the world are releasing data and publications on the ongoing pandemic is allowing other scientists to learn from local experiences and data generated on the front lines of the COVID-19 pandemic. However, there is a need to integrate additional data sources that map and measure the role of social dynamics of such a unique worldwide event in biomedical, biological, and epidemiological analyses. For this purpose, we present a large-scale curated dataset of over 1.12 billion tweets, growing daily, related to COVID-19 chatter generated from 1 January 2020 to 27 June 2021 at the time of writing. This data source provides a freely available additional data source for researchers worldwide to conduct a wide and diverse number of research projects, such as epidemiological analyses, emotional and mental responses to social distancing measures, the identification of sources of misinformation, stratified measurement of sentiment towards the pandemic in near real time, among many others.


2021 ◽  
Vol 56 (1) ◽  
pp. 112-130 ◽  
Author(s):  
Haifeng Huang

AbstractFor a long time, since China’s opening to the outside world in the late 1970s, admiration for foreign socioeconomic prosperity and quality of life characterized much of the Chinese society, which contributed to dissatisfaction with the country’s development and government and a large-scale exodus of students and emigrants to foreign countries. More recently, however, overestimating China’s standing and popularity in the world has become a more conspicuous feature of Chinese public opinion and the social backdrop of the country’s overreach in global affairs in the last few years. This essay discusses the effects of these misperceptions about the world, their potential sources, and the outcomes of correcting misperceptions. It concludes that while the world should get China right and not misinterpret China’s intentions and actions, China should also get the world right and have a more balanced understanding of its relationship with the world.


2021 ◽  
Author(s):  
Cong Wang ◽  
Zehao Song ◽  
Pei Shi ◽  
Lin Lv ◽  
Houzhao Wan ◽  
...  

With the rapid development of portable electronic devices, electric vehicles and large-scale grid energy storage devices, it needs to reinforce specific energy and specific power of related electrochemical devices meeting...


2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Andrea Crosino ◽  
Elisa Moscato ◽  
Marco Blangetti ◽  
Gennaro Carotenuto ◽  
Federica Spina ◽  
...  

AbstractShort chain chitooligosaccharides (COs) are chitin derivative molecules involved in plant-fungus signaling during arbuscular mycorrhizal (AM) interactions. In host plants, COs activate a symbiotic signalling pathway that regulates AM-related gene expression. Furthermore, exogenous CO application was shown to promote AM establishment, with a major interest for agricultural applications of AM fungi as biofertilizers. Currently, the main source of commercial COs is from the shrimp processing industry, but purification costs and environmental concerns limit the convenience of this approach. In an attempt to find a low cost and low impact alternative, this work aimed to isolate, characterize and test the bioactivity of COs from selected strains of phylogenetically distant filamentous fungi: Pleurotus ostreatus, Cunninghamella bertholletiae and Trichoderma viride. Our optimized protocol successfully isolated short chain COs from lyophilized fungal biomass. Fungal COs were more acetylated and displayed a higher biological activity compared to shrimp-derived COs, a feature that—alongside low production costs—opens promising perspectives for the large scale use of COs in agriculture.


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