On the possibility of using marine plants of the Azov-Black Sea basin for organic farming

Author(s):  
Vladislav E. Erokhin

Review of research on the use of fertilizers, growth promoters and plant protection products. High efficiency of preparations from algae and herbs for organic farming was noted. At the Barents, White Seas and on the Far East work began on the production of preparations and their use in agriculture. In the Azov-Black Sea basin this resource is practically not used. The ways and possible prospects for the use of sea resources are indicated.

2021 ◽  
Vol 51 (1) ◽  
pp. 67-73
Author(s):  
T. K. Kovalenko ◽  
A. S. Pronyushkina

The results of the application of environmentally friendly methods of potato pest control are presented. Comparative field trials of insectoacaricides and microbiological preparations were carried out on potatoes of the recognized variety Yantar in the Primorsky Territory in 2018 and 2019. The object of research was the larvae and beetles of the potato ladybird Henosepilachna vigintioctomaculata. The tubers were planted at the optimal time for the region, late April – early May. The study used Fitoverm preparations based on aversectin C (50 g/l), Akarin based on avertin N (2 g/l), Batsikol based on the strain of Bacillus thuringiensis var. darmstadiensis (BtH10), Bitoxybacillin based on the strain of Bacillus thuringiensis var. thuringiensis (BtH1). The preparations were studied independently and with Corado insecticide. Potato plants were sprayed with the preparations once. Pest counts were carried out before treatment and after treatment on the 5th, 10th, 15th day on 10 potato plants in three replications in accordance with the approved methods. Bioinsecticide Fitoverm showed a high efficiency of 90.5–94.0% at the application rate of 0.16 l/ha. A single application of bioinsecticides for 15 days restrained the intensity of the pest development below the threshold level. The combined use of bioinsecticides and an insecticide against the potato ladybird provided a decrease in the phytophage population by 90.8–99.8% compared to the control variant (without the use of plant protection products). The inclusion of preparations of biological origin Fitoverm, Akarin, Batsikol, Bitoxybacillin in potato cultivation technology will allow to limit the number of potato ladybird and solve the problem of plant protection in an environmentallyfriendly way in the south of the Far East.


Plants ◽  
2021 ◽  
Vol 10 (12) ◽  
pp. 2747
Author(s):  
Thomas Armand ◽  
Luâna Korn ◽  
Elodie Pichon ◽  
Marlène Souquet ◽  
Mélissandre Barbet ◽  
...  

Neonicotinoids are widely used to protect fields against aphid-borne viral diseases. The recent ban of these chemical compounds in the European Union has strongly impacted rapeseed and sugar beet growing practices. The poor sustainability of other insecticide families and the low efficiency of prophylactic methods to control aphid populations and pathogen introduction strengthen the need to characterize the efficiency of new plant protection products targeting aphids. In this study, the impact of Movento® (Bayer S.A.S., Leverkusen, Germany), a tetrameric acid derivative of spirotetramat, on Myzus persicae and on viral transmission was analyzed under different growing temperatures. The results show (i) the high efficiency of Movento® to protect rapeseed and sugar beet plants against the establishment of aphid colonies, (ii) the impact of temperature on the persistence of the Movento® aphicid properties and (iii) a decrease of approximately 10% of the viral transmission on treated plants. These observations suggest a beneficial effect of Movento® on the sanitary quality of treated crops by directly reducing primary infections and indirectly altering, through aphid mortality, secondary infections on which the spread of disease within field depends. These data constitute important elements for the future development of management strategies to protect crops against aphid-transmitted viruses.


Author(s):  
М.Н.Сертек,Ш.Ш. Бекенова,А.П.Науанова, З.Ш Сулейменова

According to the results of research on the phytosanitary status of rapeseed on ordinary Chernozem of the forest-steppe zone of the Akmola region, the species composition of pests was determined. Danadim power, Zolone 35% KE, Decis Expert were used against pests of this rapeseed. Indicators of biological effectiveness in the use of insecticides against pests ranged from 78-95%.The article discusses the biological and economic effectiveness of insecticides used against the main pests of rapeseed. Treatment of cruciferous rape beetle, rapeseed sawfly and cruciferous bug with Decis Expert insecticide (0.075 l/ha) showed high efficiency during the growing season. The use of plant protection products against a complex of harmful organisms showed that, depending on the prevailing climatic conditions, the yield increased to 1.3 c/ha, and the maximum - to 1.9 c/ha. Thus, according to the biological effectiveness of insecticides used against pests, the productDecis Expert showed high results in all pests. On the Cruciferous rape beetle it was 85.7%, in the turnip sawfly – 93.5%, in the cruciferous bug – 81.9%.


Author(s):  
O.Y. Redkinа ◽  
T.P. Nazarova

The article discusses the causes of illegal emigration of the Mennonites from the Black Sea region, identifies the main routes and shows the role of Mennonite mutual aid in the implementation in the 1920s-1930s. Mennonite memoirs show that the main causes of emigration were repressions against the wealthy layers of the village, the anti-religious struggle that affected wide circles of Mennonites. Young Mennonites suffered from the inability to obtain a higher or secondary specialized education, while maintaining their religious beliefs; they were afraid to be arrested as members of the families of the anti-Soviet element. The main routes of illegal emigration passed through the western regions of Russia to the Baltic countries, to Poland and Germany; through Central Asia to China, through Transcaucasia to Turkey and Iran, through the Far East to China and further to the countries of North and South America, to Germany. The Far East was the most successful channel of illegal mass emigration in the region of Blagoveshchensk, where refugees were supported by local Mennonite communities, the Harbin Refugee Assistance Committee, Protestant missionaries, the German consulate in China, and co-religionists in the United States and Canada. Mutual assistance at the interpersonal level, as well as between relatives and communities in different regions, continued to play the role of an effective support mechanism, maintaining ties within the Mennonite community.


1924 ◽  
Vol 44 (1) ◽  
pp. 45-54
Author(s):  
Oscar Waldhauer

It has been pointed out by Minns, Rostovtzeff, and other scholars that social life in the Greek cities on the northern shore of the Black Sea was very highly developed and therefore the opportunity was given for adorning sanctuaries and public buildings with sculptured monuments. A signature of Praxiteles found in Olbia proves that even the most eminent Greek masters worked for the Far East of the ancient world. It is true, very few fragments are preserved, but among them are specimens of very high quality, worth more attention than has hitherto been paid to them. I cannot agree therefore with Minns, who thinks that ‘the few marble statues are of very little value’ and ‘would scarcely claim attention elsewhere.’ The fragments are indeed in a very bad state of preservation, but this fact must not influence the judgment upon their artistic value. It is a pity also that the remains of ancient sculpture found in South Russia are not sufficiently published. The fragments scattered in different local museums must be collected and studied anew, as there probably are works of very great importance to be discovered. Further investigations, I am sure, will offer many surprises and will compel us to change entirely our view upon ancient sculpture in the Black Sea colonies. Such a surprise was the grave-relief of the early fifth century from Olbia, published by Pharmakovski; another was the colossal statue from Kertch discovered in the depot of the Hermitage, a masterpiece of high rank closely akin to the Maussollos.


2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Andrey Smagin ◽  
Nadezhda Sadovnikova ◽  
Marina Smagina

AbstractAnti-pathogenic protection of potatoes remains one of the most pressing problems of sustainable agronomy and plant protection. For this purpose, we propose to use a new type of synthetic hydrogels filled with amphiphilic recipients (dispersed peat, humates) and modern plant protection products. We assumed that the introduction of swollen gel structures into the rhizosphere of potatoes will allow us: to optimize the water supply and productivity of potatoes; to protect the fertile layer and potato tubers from the main pathogens; to fix modern plant protection products in the rhizosphere, keeping them from leaching and entering the environment. Preliminary laboratory experiments tested the anti-microbial activity of gel structures, as well as their water retention, dispersity and hydraulic conductivity with subsequent computer modeling of the water exchange and root uptake in the system of “soil-gel-potato”. Field trials were carried out in humid (European Russia) and arid (Uzbekistan) conditions under the atmospheric precipitation and irrigation on different soils and potato varieties with instrumental monitoring of environment, potato growth and quality. All experimental results confirmed the high efficiency of water-accumulative and plant protective synthetic gel structures. Their usage sufficiently (up to 6–15 t/hct) increases the potato yield with 1.3–2 times water saving, complete retention of agrochemicals in the rizosphere, and its actually total protection against major potato pathogens, including late blight (Phytophthora infestans).


1998 ◽  
Vol 29 (1) ◽  
pp. 44-62
Author(s):  
Karen A. Snow

After the Russo-Japanese War, Russia's Ministries of Foreign Affairs and of Trade and Industry tried to reorganize the country's shipping on a more commercial basis by creating steamship lines and exploiting various trade opportunities. Because Singapore was a major halting point for Russian ships using the sea route from the Black Sea to the Far East, Consuls there were in the forefront of trade issues. Based on records of the Singapore Consulate and other materials at the archive of the Ministry of Foreign Policy in Moscow, the article explores plans for the commercialization of Russian shipping and the problems faced by Consuls in advancing Russian economic activity in the region.


Author(s):  
М. Б. Пісковий ◽  
М. А. Магда ◽  
А. В. Пилипченко ◽  
В. П. Ситник

У статті викладені результати досліджень щодо ефективності вирощування конопель в умовах класичної технології та органічного землеробства. Визначено, як технологія вирощування конопель впливає на зміну біологічного стану ґрунту, урожайність насіння та стебел, а також започатковано вивчення шляхів забезпечення культури конопель елементами живлення. Дослідженнями встановлено, що вирощування конопель сорту Гляна в умовах органічного виробництва не сприяє підвищенню урожайності насіння, порівняно із перехідною від класичної до біологічної технології (інтенсивною). Накопичення і трансформація свіжої органічної речовини рослинних решток конопель залежить від складових технології органічного землеробства, які дають змогу мікрофлорі ґрунту не переносити стресових навантажень від впливу міндобрив і засобів захисту рослин. The article presents the results of research on the effectiveness of hemp cultivation in the conditions of classical technology and organic farming. It has been determined how the technology of hemp cultivation influences the change of the biological state of the soil, the yield of seeds and stems, as well as the study of ways to ensure the culture of hemp with nutritional elements. The research has established that the cultivation of hemp straw in the conditions of organic production does not contribute to increasing the yield of seeds, compared with the transition from classical to biological technology (intensive). The accumulation and transformation of fresh organic matter of the hemp plant residues depends on the components of the organic farming technology, which enable the microflora of the soil to not tolerate stress from the effects of fertilizer and plant protection products.


Agronomy ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 421 ◽  
Author(s):  
Alessandra Trinchera ◽  
Bruno Parisi ◽  
Valentina Baratella ◽  
Giancarlo Roccuzzo ◽  
Ivano Soave ◽  
...  

Recently, on the EU market, phosphonic acid residues were detected in many organic goods, although fosetyl-derivates and phosphite salts are not allowed by Reg. EC n. 889/2009. The BIOFOSF project “Solving phosphite issue in organic fruit and horticultural crops” aimed at verifying whether the phosphonic acid contamination could be due to unproper use of fertilizers/plant protection products by organic farmers, or to the plant’s ability to self-produce it spontaneously. Applying a participative approach, field case-studies on potato, rocket lettuce, and pears were carried out (organic vs. integrated systems). The ethyl-phosphonic acid and phosphonic acid were determined in soil, tubers, leaves, fruits, tree woody organs, used fertilizers, and plant protection products to correlate them to the applied farming management. Tested crops were not able to self-synthetize phosphonic acid, being its detection due to: (i) external inputs not allowed in organic farming; (ii) fertilizers/plant protection products allowed in organic farming, contaminated by fosetyl or phosphite. In addition, it was found that tree crops can stock the phosphite in their woody organs, then translocate it from branches to leaves and fruits over time. Regression models applied to field data showed that fruit trees decontamination could take more than 5 years, depending on the starting value of phosphonic acid contamination, useful to define the phosphite maximum residue limit in organic fruit crops.


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