scholarly journals Efficiency of new methods of cultivation of various varieties and hybrids of table beet in the conditions of irrigation in the Astrakhan region

Author(s):  
Anastasia Nikolaevna Bondarenko ◽  
Oksana Vladimirovna Kostyrenko

Vegetable roots, including table beets, are valuable, irreplaceable components of a rational human diet. A positive feature of this crop is the good keeping quality of its root crops, which ensures year-round consumption of fresh products. During 2019-2020, research on cultivating varieties and hybrids of table beet was conducted at the experimental irrigated area of the Federal state budgetary INSTITUTION "PAFSC RAS". As a result of the field experience, a high-yielding variety of Ethiopian Was identified, which more economically spent water on the formation of marketable products. The lowest water consumption coefficient of 73.7 m3 / t was obtained in the variant using leaf treatment with Aminovit. The maximum biological yield of 83.3 t / ha for this variety was obtained on the variant with leaf treatment with complex mineral fertilizer Aminovit. With these indicators, the increase to the control was +19.9 t / ha. The commercial yield was 61.3 t / ha, while the percentage of marketability was 74.

Author(s):  
Alexey V. Sibirev ◽  
Aleksandr G. Aksenov ◽  
Maxim A. Mosyakov

Introduction. Existing machines for harvesting root crops and onions do not have efficient indicators describing separation of root crops that leads to incompliance with agrotechnical requirements to harvesting root crops. New methods should be found to increase quality of root crop separation, including the qualitative indicators, and to cut losses. Materials and Methods.The article describes the design of a laboratory unit for determining qualitative indicators of the seed onion heap separation using a rod elevator with the asymmetric passive elliptical shaker and supporting roller. The authors describe the method and results of laboratory studies to determine qualitative indicators of seed onion heap separation at an experimental rod elevator. Results. The results of the laboratory study of the rod elevator are cited and qualitative indices of seed onion heap separation are defined. The maximum completeness of separation of the seed onion heap is 98 %, when the forward speed of the web of the rod elevator is vel = 1.55–1.68 m/s, the supply of heap of onion-seeding QB = 19.7–27.1 kg/s and the interaxial distance between the passive elliptical shaker and the supporting roller is within the range of S = 0.29–0.42 m. Discussion and Conclusion. The use of a rod elevator with the asymmetric elliptical shakers and supporting roller allows increasing the completeness of separation of seed onions by 20 % and to cut the bulb damage by 11 %, compared to symmetrical arrangement of the shakers.


2019 ◽  
pp. 151-154
Author(s):  
N. A. Ratnikova ◽  
A. V. Yanchenko ◽  
T. Yu. Polyanina ◽  
E. A. Evseeva

Relevance. When using precision seeders, seeds that are uniform in weight and size are needed. The maximum uniformity of the seeds can be achieved by by pelleting. Thanks to the coating, small chicory seeds increase their size by 8 times or more. In this case, the composition of the shell can include various plant protection products against pathogens, growth stimulants, micronutrient fertilizers. It is advisable to seed the seeds with their initial germination of at least 95%.Material and methods. The article presents the results of a study conducted at the Rostov Vegetable Experimental Station for chicory – a branch of the Federal State Budgetary Scientific Institution Federal Scientific Vegetable Center, where seeds with fillers were used for sowing root chicory: Maxim fungicide, treater Prestige, Isabion – liquid organic and mineral fertilizer, Agrogel.Results. As a result, a positive effect of pelleting on the sowing quality of seeds was revealed (germination energy and field germination are higher than in the control, 2% and 0.6%, respectively, and laboratory germination at the control level), effectiveness against root rot during the growing season and during winter storage time, increase in crop root crops yield by more than 30% and ensuring net profit in comparison with the control by 21.4 thousand rubles / ha. At the same time, the level of profitability is increasing by 26%. 


Author(s):  
Margaret Jane Radin

Boilerplate—the fine-print terms and conditions that we become subject to when we click “I agree” online, rent an apartment, or enter an employment contract, for example—pervades all aspects of our modern lives. On a daily basis, most of us accept boilerplate provisions without realizing that should a dispute arise about a purchased good or service, the nonnegotiable boilerplate terms can deprive us of our right to jury trial and relieve providers of responsibility for harm. Boilerplate is the first comprehensive treatment of the problems posed by the increasing use of these terms, demonstrating how their use has degraded traditional notions of consent, agreement, and contract, and sacrificed core rights whose loss threatens the democratic order. This book examines attempts to justify the use of boilerplate provisions by claiming either that recipients freely consent to them or that economic efficiency demands them, and it finds these justifications wanting. It argues that our courts, legislatures, and regulatory agencies have fallen short in their evaluation and oversight of the use of boilerplate clauses. To improve legal evaluation of boilerplate, the book offers a new analytical framework, one that takes into account the nature of the rights affected, the quality of the recipient's consent, and the extent of the use of these terms. It goes on to offer possibilities for new methods of boilerplate evaluation and control, and concludes by discussing positive steps that NGOs, legislators, regulators, courts, and scholars could take to bring about better practices.


2018 ◽  
Author(s):  
V.A. Borisov ◽  
I.Yu. Vasjuchkov ◽  
A.A. Kolomiets ◽  
O.N. Uspenskaya ◽  
A.V. Kornev

Установлено, что на пойменных почвах использование методов диагностики минерального питания растений моркови «по почве» и «по черешку» в фазу начала образования корнеплодов позволяет значительно (на 36–42%) снизить расход минеральных удобрений, обеспечивая урожайность моркови на уровне 70 т/га с долей стандартной продукции 78–81% без существенного изменения качества корнеплодов.It was found that in floodplain soils, the use of methods of diagnosis of mineral nutrition of carrot plants «on the soil» and «on the petiole» in the phase of the beginning of the formation of root crops can significantly (by 36–42%) reduce the consumption of mineral fertilizers, ensuring the yield of carrots at the level of 70 t/ha with a share of standard production of 78–81% without significantly changing the quality of root crops.


Author(s):  
H.M. Hospodarenko ◽  
◽  
I.V. Prokopchuk ◽  
K. P. Leonova ◽  
V.P. Boyko

The productivity of agricultural crops is the most variable and integral indicator of their vital activity, which accumulates their genetic potential, soil fertility, weather conditions and components of agricultural technology. Soybean under optimal growing conditions (the reaction of the soil is close to neutral, sufficient phosphorus and potassium nutrition, the use of nitraginization) assimilates from the air about 70 % of the total nitrogen requirement. Therefore, it is believed that it is enough to apply only a starting dose of nitrogen fertilizers (20–40 kg/ha a. s.), to get a high yield with good indicators of grain quality. The results of studies of the influence of long-term (8 years) application of different doses and ratios of fertilizers in field crop rotation on podzolized chernozem in the conditions of the Right -Bank Forest-Steppe of Ukraine on the yield and quality of soybean seeds preceded by spring barley were presented. It was found that crop yields could be increased by 18–77 % owing to different doses, ratios and types of fertilizers. The highest indicators of seed yields for three years of the research (3,02 t/ha) were obtained under the application of mineral fertilizers at a dose of N110P60K80 per 1 ha of crop rotation area, including under soybean – N60P60K60. Exclusion of the nitrogen component from the complete fertilizer (N60P60K60) reduced its yield by 26 %, phosphorus – by 17, and potassium by 11 %. There was no significant decrease in soybean yield in the variant of the experiment with a decrease in the proportion of potassium in the composition of complete mineral fertilizer (N60P60K30) for three years of study. The largest mass of 1000 soybean seeds was formed at doses of N60К60 fertilizers, and their protein content — under the application of complete mineral fertilizer in doses of N60P60K60 and N60P60K30.


Introduction of complex mineral fertilizer of an azofoska in combination with ammonium nitrate and urea to early ripe potatoes of Zhukovsky and Red Scarlett variety on the planned productivity of 40 t/hectare has allowed to achieve a goal. At the same time in control option without fertilizers the productivity was 23,2-24,8 t/hectare. Use of encapsulated urea has led to decrease in productivity and level of profitability by 26,3-30,9%. Early ripe potatoes of Zhukovsky and Red Scarlett variety on natural fertility of the chernozem leached in the northern forest-steppe of the Tyumen region have created average yield of 23,2-24,8 t/hectare for years of researches. Use of complex mineral fertilizer of an azofoska in combination with ammonium nitrate and urea on the planned productivity of 40 t/hectare has led to increase in productivity on the first variety to 39,5 on the second variety up to 41,4 t/hectare. Introduction of the encapsulated urea has led to decrease in productivity of the early ripe potato tubers studied. At the same time, the peel was gentle and when cleaning it was strongly injured. As to the content of starch (11,9-12,6%) at both varieties the big difference between ex-perience options isn't revealed. The similar picture was observed also according to tastes of tubers. It has made 3,2-3,5 points at Zhukovsky variety and 3,4-3,7 points at Red Scarlett's variety. Profitability level in con-trol option at Zhukovsky variety was 157,3%, at Red Scarlett's variety – 140,5%. In options with non-encapsulated ammonium nitrate and urea the first variety got 172,6-184,1%, second variety – 190,4-207,2%. In option with encapsulated urea at varieties under study the profitability level has decreased 26,3-30,9.


Author(s):  
O. Yu. Strelova ◽  
E. N. Stepanova ◽  
A. N. Grebenyuk

The need for basic training in toxicology of students of pharmaceutical universities and departments of toxicology is justified. The experience of teaching toxicology and medical protection to students of the St. Petersburg State Chemical Pharmaceutical Academy was analyzed. Academic teaching staff were trained in the methodology of teaching toxicology, and a participated in the preparation of the all-Russian textbook «Toxicology and Medical Protection» (2016) and three tutorials for students of medical and pharmaceutical universities. It is shown that in accordance with the current Federal State Educational Standard of the third generation, toxicology issues are included in the curriculum of a complex discipline «Life Safety. Emergency Medicine» as a stand-alone module. Students study toxicology in the fifth year having received a good basic training in medical, biological, and professional disciplines in previous years. For realization of cognitive and creative activity of students in the educational process, modern educational technologies are used which make it possible to improve the quality of teaching and to use school time more efficiently. The potential of using algorithmic workbooks, interactive forms of training, test control, case-method for facilitating the perception of theoretical knowledge and improving the quality of practical skills development is demonstrated. Results of the anonymous questionnaire survey, in which 153 of 198 students who studied toxicology and medical protection in the autumn semester of the 2017/2018 academic year participated, are reported. It was shown that more than 80% of the students surveyed are convinced of the need to study toxicology during the undergraduate training of specialists of pharmaceutical profile and positively assessed the methodology of teaching toxicology that is performed at the St. Petersburg State Chemical Pharmaceutical Academy.


Agronomy ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1427
Author(s):  
Gulen Ozyazici

Environmental contamination and the excessive use of inorganic fertilizers resulting in stagnant yields of field crops which necessitate the utilization of combined fertilization approach under changing climatic conditions. Current study was aimed to clarify the influence of several fertilizer sources (chemical, organic, organomineral fertilizers) on yield and quality of coriander (Coriandrum sativum L.). The results revealed that the fertilizer sources significantly affected the yield of coriander cultivars. The absence of “Year x Variety x Fertilizer Type” interactions for any of the noted parameters signaled that the detected “Variety x Fertilizer Type” interactions were constant regardless of the year factor. The recorded values of traits according to fertilizer sources different for the plant height from 61.85 to 69.67 cm, number of branches from 5.98 to 7.71 (piece/plant), number of umbels per the main umbel from 5.62 to 7.18 pieces, seed yield from 1.06 to 1.66 t/ha, the biological yield from 4.29 to 5.70 t ha−1, harvest index from 25.29 to 29.41%, essential oil ratio from 0.29 to 0.33%, and essential oil yield from 3.1 to 5.6 L ha−1. Erbaa variety was observed to be superior over the rest of the varieties producing the maximum values of 6.5 L ha−1 of essential oil, 0.36% essential oil content, 30.9% harvest index, 1.81 t/ha seed yield, and 5.9 t ha−1 biological yield with the treatment of chemical fertilizers.


Healthcare ◽  
2021 ◽  
Vol 9 (4) ◽  
pp. 454
Author(s):  
Giuseppe Varvara ◽  
Sara Bernardi ◽  
Serena Bianchi ◽  
Bruna Sinjari ◽  
Maurizio Piattelli

The COVID-19 pandemic literally stopped most human movement and activities as it initially spread, which included dental practices and dental education. This defined the need for significative changes in teaching and learning with the use of “e-learning” methods, also for traineeships. This study was designed to determine the undergraduate student perception of these new methods as part of their education. This involved 353 students attending the Dental School of the G. D’Annunzio University of Chieti–Pescara, from the first to the sixth years. A questionnaire in Italian and was set-up using “Google Forms” and sent by email to the students. The questionnaire was divided into three parts: the first part included questions for general information, including age, sex and year of course; the second part had multiple choice questions related to their evaluation of the e-learning teaching, using a scale of opinion in the replies to each question (e.g., “scarce”, “fair”, “satisfying”, “very good” and “excellent”); and the third part included two open questions to indicate the strengths and limitations of these new teaching and learning approaches. The categorical variables in the first and second parts of the questionnaire were evaluated using Chi squared tests, setting significance at p < 0.05, while the comments were evaluated qualitatively. The student feedback showed significant appreciation (p < 0.05) of the new methods and the efforts that the lecturers put in to provide lectures of as high a quality as possible. However, a lack of practical training was significantly perceived as an important problem in the structure of their new curriculum (p < 0.05). COVID-19 has been an epic tragedy that has hit the human population not only in terms of health and healthcare, but also quality of life. This includes the quality of dental education within universities. However, the pandemic can be seen to also represent motivation to invest in the necessary technological innovation to deliver the best possible education to our future dentists.


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