scholarly journals Quality of self-propelled sprayers through periodic inspection

2021 ◽  
pp. 150-155
Author(s):  
Antonio Luiz Viegas Neto ◽  
Cristiano Márcio Alves de Souza ◽  
Matheus Marques Miliati ◽  
Izidro Dos Santos Lima Júnior

The inspection of agricultural sprayers is a vital tool for the increment of quality of spray technology for phytosanitary products. The objective of this work was to evaluate the performance conditions of self-propelled sprayers on-farm, using the periodical inspection methodology for sprays and analyzing the climatic conditions during the spraying. The evaluations were carried on farms visited randomly. A questionnaire was filled out by the operator or farmers and the inspection itself of the sprayers. The items evaluated were the condition and location of hoses, presence of leaks, monitor performance, spacing between nozzles, spray nozzles, in-line filter, primary filter, the performance of anti-dripping gauges, and limiting environmental conditions. Most interviewed operators and farmers did not know the methodology for inspecting agricultural sprayers, demonstrating the need to create specific training programs in the region. Self-propelled sprayers have a few technical problems when they were new, however, spraying beyond the ideal weather conditions can reduce the spraying quality.

2010 ◽  
Vol 58 (2) ◽  
pp. 185-193 ◽  
Author(s):  
M. Bajnok ◽  
L. Szemán ◽  
J. Tasi

No significant studies have yet been reported in Central Europe on the yield and quality of winter harvest pastures. The aim of the research was to collect information about the effect of pre-utilisation (June, July and August) and winter harvest date (November, December, January) on the quantity and quality of fodder from Festuca arundinacea stands. The dry matter, energy, ADF, ADL and ergosterol contents of the yield were examined and it was found that: 1. A shorter regeneration period between harvests resulted in lower dry matter levels, but also in a higher energy concentration and lower ergosterol concentration. 2. The yield and energy concentrations decreased, whereas the ADF, ADL and ergosterol concentrations increased as the winter progressed. 3. Fodder harvested in November produced the best results in terms of yield quantity and quality. The highest yield and energy values were thus achieved by harvesting in November, regardless of pre-utilisation. Despite the cold and the long period of snow cover, the energy values of samples harvested in December and January showed no significant decrease. The weather conditions were more important for fodder quantity and quality than the frequency or date of harvesting. Thus, under the continental climatic conditions in Hungary, extensive utilisation, until late November or early December, is recommended.


1995 ◽  
Vol 31 (12) ◽  
pp. 425-430 ◽  
Author(s):  
R. K. X. Bastos ◽  
D. D. Mara

Field- and glasshouse-grown lettuces and radishes were drip- and furrow-irrigated with waste stabilization pond effluent and with trickling filter effluent diluted with clean water. Crop contamination levels varied considerably. Under dry weather conditions they were at worst of the orders of 103 and 104E. coli per 100 g (fresh weight) for radishes and lettuces, respectively; salmonellae were always absent. The bacterial quality of experimental lettuces was similar to those of lettuces on sale in local markets. When rainfall occurred E. coli numbers increased and salmonellae were isolated from lettuce surfaces. These results are interpreted as partially, substantiating the current World Health Organization bacteriological guideline for unrestricted wastewater reuse, but suggest the need for further assessment on the variation in crop contamination caused by climatic conditions.


2021 ◽  
Vol 2 (44) ◽  
pp. 21-21
Author(s):  
Alexander Saakian ◽  
◽  

In 2005-2015. studied the effect of liquid organic fertilizer BIOOD-1 as foliar feeding on the yield and quality of various potato varieties in changing meteorological conditions. According to the results of the experiments, it was established that the most stable yields under various weather conditions were shown by the potatoes of the mid-season variety Bryansk delicacy. The low starch content of varieties Nevsky, Udacha was noted in years of high humidity, but with a lack of moisture, the starch content of these varieties increased in the background variant and in the experiment with organic fertilization. Keywords: CLIMATIC CONDITIONS, HYDROTHERMAL COEFFICIENT, MEAN SENIOR PRECIPITATION, POTATO, YIELD, STARCH, HUMIC FERTILIZERS


Author(s):  
B. Kozij ◽  
O. Stepanjuk

The most important factor of realization of genetic potential of animals is  a  valuable feeding.  Considerable attention is today spared to this problem and are conducted many researches of the rationssent to perfection of structure taking into account the physiological features of animals digestion. The process of rations calculation of animals feeding includes the need in public work with plenty of certificate information: by tabular data about content of nutritives, macro- and microelements, vitamins in each type of feed, by the results of lab tests of forage, requirements in the nutritives of animals of different sexual-age-old groups. Work is considerably simplified, if all this information is kept in memory  of computer as a corresponding base. A  standard database contains certificate information about the content of nutritives, macro- and microelements, vitamins, and other in every type of feed in accordance with average data for a corresponding region or zone of agriculture. Such information is conditionally-permanent, as properties of soil and natural and climatic conditions for a concrete region change very slowly. At the rations calculation of agricultural animals feeding and poultry bird it is necessary to have operative information about the real content in corresponding forage all those substances after that there will be a balanced ration. Depending on weather conditions the quality of the used seed, amount and added fertilizer conditions and expiration of forage date the real content of nutritives in every  feed candiffer from a standard for this region. So before of calculations, it is necessary to amend changes in the table of  database that will be directly used in calculations. With the aim of maintenance of standard information such calculations should be performed with the use of some copy of standard database in which should make such changes. An algorithm is offered for realization of calculation of rations of feeding of agricultural animals together with determination of areas of sowing of corresponding greencrops on the basis of the worked out mathematical model but methodology of realization of this algorithm by facilities of tabular processor of Excel.


2017 ◽  
Vol 41 (4) ◽  
pp. 377-393 ◽  
Author(s):  
Tadeusz Orzechowski ◽  
Mateusz Orzechowski

The article presents the methodology for calculating the optimal insulation thickness that is related to the quality of energy supply and fuel prices. Assuming that the total cost following renovation is the sum of the costs of heating and thermal upgrading, it was shown that when calculating the optimal insulation thickness, the thermal resistance of the outer walls should be taken into account. Such calculations, in addition to the characteristics of the heat source, should be carried out taking into account local weather conditions. The study presents the results of such calculations for the building heated with gas and the air-source heat pump. The results of the investigations are referred to the mean climatic conditions recorded in the last 10 years. It was found that for thermal upgrading with the use of foamed polystyrene having the optimum thickness, total investment costs are almost the same, regardless of polystyrene thermal properties. The same also refers to energy costs. The article also provides sample calculations for plaster, the main ingredient of which is perlite. In the case of internal thermal upgrading of the historic buildings, such isolation is recommended in order to prevent moisture problems inside the envelope.


2021 ◽  
pp. 147-152
Author(s):  
П.А. Диденко ◽  
Е.С. Галкина ◽  
К.Ф. Зарипова ◽  
В.Н. Шапоренко ◽  
В.В. Андреев

В стрессовых погодных условиях применение минеральных удобрений при внекорневых подкормках оказывает существенное влияние на рост и развитие виноградных растений, способствует повышению урожайности и улучшению качества продукции (содержание сахаров, титруемых кислот, фенольных веществ, витаминов, сохранности продукции и т.д.). В статье приводятся результаты исследований по изучению влияния органического удобрения природного происхождения Изабион на продуктивность и качество урожая винограда технических сортов Алиготе, Бастардо магарачский и Шардоне в почвенно-климатических условиях Юго-западной виноградарской зоны Крыма. В ходе проведения исследований установлено, что применение изучаемого удобрения способствует повышению средней массы грозди на 15,8-40 г, урожая с куста - на 0,8-1,4 кг и урожайности винограда - на 1,8-2,9 т/га в сравнении с контролями. Экспериментально определено, что опытные обработки привели к существенному увеличению средней длины побегов в среднем на 7,7 % и прироста вегетативной массы на 11,8 %. На фоне применения исследуемых систем питания отмечено увеличение концентрации сахаров в соке ягод на 11-18 г/дм(5,7-12,1 %). При расчете экономической эффективности технологии выращивания технического сорта винограда Алиготе установлено, что двукратная внекорневая подкормка минеральным удобрением Изабион снижает фактическую себестоимость произведенной продукции в среднем на 19,7 % и повышает рентабельность производства на 39,5 %. Using of mineral fertilizers in foliar dressing in stress weather conditions significantly effects growth and development of grape plants, promotes an increase in cropping capacity and product quality (content of sugars, titratable acids, phenolic substances, vitamins, product safe-keeping, etc.). The article presents the results of studies on the effect of natural organic fertilizer Isabion on the productivity and quality of grape yield of wine varieties ‘Aligote’, ‘Bastardo Magarachskiy’ and ‘Chardonnay’ in the soil and climatic conditions of the South-West viticultural zone of Crimea. In the course of the research it was found that using of the studied fertilizer contributed to an increase in the average bunch weight by 15.8-40 g, the yield per bush - by 0.8-1.4 kg, and the cropping capacity of grapes - by 1.8-2.9 t/ha in comparison with controls. It was experimentally determined that test applications have led to a significant increase in the average shoot length by 7.7% and in the green matter by 11.8%. Against the background of using the studied food systems, an increase in the concentration of sugars in the juice of berries by 11-18 g/dm (5.7-12.1%) was registered. When calculating the economic efficiency of wine grape variety ‘Aligote’ growing practice it was found that double foliar dressing with Isabion mineral fertilizer reduced actual cost of production by an average of 19.7% and increased profitability of production by 39.5%.


2019 ◽  
Vol 41 (4) ◽  
Author(s):  
Pricila Santos da Silva ◽  
Marines Batalha Moreno Kirinus ◽  
Caroline Farias Barreto ◽  
Carlos Sebastián Pérez Lamela ◽  
Marcelo Barbosa Malgarim ◽  
...  

Abstract The ripening of grapes is impaired by climatic conditions due to the prolonged rainy season and thus facilitates the proliferation of diseases such as grape clusters rotting, caused by the fungus Botrytis cinerea, even before the ideal harvesting point. The aim of the study was to evaluate the effect of gibberellic acid (GA3) on rot and on physical-chemical quality of ‘Sauvignon Blanc’ grapevine. The experiment was carried out in the production season of 2016 and 2017 in Campanha region in Rio Grande do Sul, Brazil. The GA3 treatments were at the doses of 0 (control); 2; 4; 6 and 8 mg L-1 of GA3. The percentage of clusters rotting and maturation index decreased, however, the titratable acidity increased with GA3 doses. The cluster and rachis length increased with application of GA3. The cluster width; cluster, rachis and berry mass and the soluble solids were not influenced by application of GA3. In ‘Sauvignon Blanc’ grapevine, GA3 reduced the percentage of clusters rotting and improved the cluster and rachis length characteristics and titrable acidity.


Children ◽  
2021 ◽  
Vol 8 (11) ◽  
pp. 1021
Author(s):  
Santiago Galán ◽  
Catarina Tomé-Pires ◽  
Rubén Roy ◽  
Elena Castarlenas ◽  
Mélanie Racine ◽  
...  

Successful school re-entry is important for children following cancer treatment. However, this process is a challenge for teachers. Objectives: To identify (1) the difficulties and needs that teachers have in helping youth cancer survivors be successful in school, (2) the most effective resources that teachers are currently using for helping them, and (3) the ideal contents for a program that could help teachers in this area. Methods: Twenty-eight teachers participated in a Delphi study. Results: A lack of knowledge regarding how to best help and having to deal with the student’s problems were identified as difficulties. Specific training, psychological support, and advice from health professionals were the most commonly reported needs. Maintaining contact with the family and the students and providing personalized attention were viewed as the most useful resources. Finally, knowledge about the disease itself and how to facilitate successful school re-entry were identified as important program components. Conclusion: The findings provide important new information regarding the lack of both resources and support for teachers who seek to help youth cancer survivors. The findings can be used to inform the development of an intervention to help teachers become more successful in facilitating successful school re-entry.


Author(s):  
Christoforos Nikitas KASIMATIS ◽  
Evangelos PSOMAKELIS ◽  
Nikolaos KATSENIOS ◽  
Eleni PAPATHEODOROU ◽  
Ioanna KAKABOUKI ◽  
...  

Tomato is one of the most significant vegetables in the world. Specifically, for the industrial tomato cultivation, the product is harvested when °Brix are at their peak. Technological advancements nowadays have made Decision Support Systems, based on Machine Learning Algorithms more applicable in a daily basis. Sustainable agriculture is evolving since farmers could be advised by this technology in order to take the best decision for their crops. Farmers who adopt this kind of technology will be able to know the quality of tomatoes. The implementation of a Decision Support System capable to predict the °Brix was conducted, based on various data from previous years, such as quality characteristics, the tomato hybrid used, weather conditions and soil data from the selected fields. Data came from fields from 6 different regions in Peloponnese, Greece over 3 cultivation periods. 12 different algorithms were tested in order to find which is the best one in terms of efficiency. Results of this research showed that the predicted °Brix were following the same pattern as the actual °Brix. This means that the DSS could advise the farmer about the ideal harvesting period where the °Brix will be maximized. The use of this DSS using real time weather data as an input will be a valuable tool for the farmers.


Author(s):  
R. Beeuwkes ◽  
A. Saubermann ◽  
P. Echlin ◽  
S. Churchill

Fifteen years ago, Hall described clearly the advantages of the thin section approach to biological x-ray microanalysis, and described clearly the ratio method for quantitive analysis in such preparations. In this now classic paper, he also made it clear that the ideal method of sample preparation would involve only freezing and sectioning at low temperature. Subsequently, Hall and his coworkers, as well as others, have applied themselves to the task of direct x-ray microanalysis of frozen sections. To achieve this goal, different methodological approachs have been developed as different groups sought solutions to a common group of technical problems. This report describes some of these problems and indicates the specific approaches and procedures developed by our group in order to overcome them. We acknowledge that the techniques evolved by our group are quite different from earlier approaches to cryomicrotomy and sample handling, hence the title of our paper. However, such departures from tradition have been based upon our attempt to apply basic physical principles to the processes involved. We feel we have demonstrated that such a break with tradition has valuable consequences.


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