Revista Brasileira de Engenharia de Biossistemas <table style="height: 190px;" width="800"> <tbody> <tr> <td width="141"> <h2 class="title"> </h2> <h2 class="title"> <img src="" /></h2> </td> <td width="425">The <em>Brazilian Journal of Biosystems Engineering</em> (BIOENG) publishes original articles that present theoretical, experimental, computational advances and innovations in the areas of agricultural and environmental systems, bringing applications for the sustainable development of agricultural and animal biosystem productions. BIOENG journal publishes interdisciplinary scientific articles and prioritizes issues related to Sustainable Development Goals (SDGs) of the United Nations (UN).</td> </tr> </tbody> </table> en-US <p>Authors who publish in this journal agree to the following terms:</p> <p>a) Authors retain the copyright and grant the journal the right of first publication, with the work simultaneously licensed under the Creative Commons Attribution License that allows the sharing of the work with recognition of authorship and initial publication in this journal.</p> <p>b) Authors are authorized to assume additional contracts separately, for non-exclusive distribution of the version of the work published in this journal (eg, publish in an institutional repository or as a book chapter), with recognition of authorship and initial publication in this journal.</p> (Prof. Dr. Fernando Ferrari Putti) (Prof. Dr. Fernando Ferrari Putti) Tue, 31 Aug 2021 18:26:03 +0000 OJS 60 ARDUINO PLATFORM APPLIED IN THE DEVELOPMENT OF A MICROENVIRONMENTAL DATA COLLECTION SYSTEM IN GREENHOUSES <p>Data collection and environmental monitoring in agriculture are most complex activities, normally requiring expensive equipment. Data collection should preferably be carried out close to the stratum of plant cultures, as this way obtain reliable data on the microenvironment where the plant is located. The objective this study was to develop a low-cost data collection system to obtain parameters related to luminosity, soil moisture, air humidity and temperature in an agricultural environment. The specific methodology of product development and Arduino prototyping platform were used to assemble the Datalogger system. Functional tests were carried out in two greenhouses A1 and A2 for a period of 24 hours. The system design, with the use of sensor supports, allowed the collection of data without interruption and with adequate accuracy. The Arduino platform and accessory sensors proved to be perfectly applicable for data acquisition and storage in greenhouses. The developed Datalogger prototype showed a cost reduction of 600 to 3000% compared to components available on the market with similar functionalities.</p> Aldir Carpes Marques Filho, Jean Paulo Rodrigues, Gabriel Buligon Dal Ponte Copyright (c) 2021 Revista Brasileira de Engenharia de Biossistemas Tue, 31 Aug 2021 00:00:00 +0000 PERFORMANCE OF PLOT HARVESTER ON SOYBEANS WITH DIFFERENT DISPLACEMENT DIFFERENT SPEED <p>The mechanized harvesting of soybean is fundamental tool in the production process of this crop, and if not performed properly, it can result in severe mechanical damage to the grains, causing significant losses at harvest. This concern with harvest must also be taken into account in experimental fields, when plot harvesters are used. The aim of the present study was to assess losses occurring in mechanized harvesting with plot harvester with diffent displacement speed. Combine header, thresing and total losses were assessed. In addition, the impurity number of pods and the moisture content of the grains were evaluated, with displacement speeds of: 2, 4, 6 and 8 km h<sup>-1</sup>. The increase of displacement speed provided less losses in mechanized harvesting of soybean. The number of pods, such as impurities and humidity, were also influenced by the increase in displacement speed.</p> Matheus Danieli, Allan Remor Lopes, Marcelo Dotto, Elouize Xavier, André Bressiani Machado, Vinicius Eduardo Schiavini, Camila Moreno Giarola, Kelli Pirola Copyright (c) 2021 Revista Brasileira de Engenharia de Biossistemas Tue, 31 Aug 2021 00:00:00 +0000 ANALYSIS OF THE SPATIAL VARIABILITY OF THE TEMPERATURE HUMIDITY INDEX IN RIO GRANDE DO SUL AT DIFFERENT TIMES <p>This study aims to analyze the spatial variability of the temperature and humidity index (THI) in RS at different times of day. The study was carried out for forty-two municipalities. The THI was calculated using temperature and relative humidity data (period 2000 to 2020). Once the spatial dependence was detected, the thematic map of the spatial distribution of the ITU was produced by means of ordinary kriging at 3-hour intervals (5-7; 8-10; 11-13; 14-16; 17-19; 20 -22; 23-1; 2-4 h). In the interval between 8 and 10 am and between 8 pm and 10 pm, the index is indicative of comfort throughout the territory; between 23 and 7 h there is discomfort due to cold stress (THI&lt;60) in most of the state and, between 11 and 19 h, there may be some type of discomfort due to heat stress (THI&gt;70) in most of the state of Rio Grande do Sul.</p> Zanandra Boff de Oliveira, Alberto Eduardo Knies, Sidinei Zwick Radons, Eduardo Leonel Bottega Copyright (c) 2021 Revista Brasileira de Engenharia de Biossistemas Tue, 21 Sep 2021 00:00:00 +0000 VERIFICATION OF THE PRODUCTION OF WTP SLUDGE AS A FUNCTION OF THE QUANTITY AND QUALITY OF RAW WATER <p>Quantifying the sludge produced in water treatment plants (WTPs) is a fundamental step to know how much of this waste is improperly released into water sources and to plan its proper final disposal. This article discusses the comparison between three empirical methods for estimating the amount of sludge generated in two WTPs with different consumption of chemical products in water treatment for the municipality of Aracaju. The research was carried out in order to verify if there were differences in the results between the years 2016 to 2019, to compare the production estimates for each WTP and to analyze the influence of variations in the qualitative parameters of raw water and the addition of chemical products. It was found that empirical equations that consider a greater number of variables are the most appropriate for WTPs where treatment is more complex, while simpler equations can be suitable for WTPs that use few chemicals.</p> Lucas Avelino Reis Santos, Denise Conceição de Gois Michelan, Taynar Mota Jesus Copyright (c) 2021 Revista Brasileira de Engenharia de Biossistemas Fri, 01 Oct 2021 00:00:00 +0000 EFFECT OF THIAMETOXAN INSECTICIDE ON COFFEE SEEDLINGS <p>The objective of this research was to evaluate the growth of coffee seedlings using the insecticide Thiamethoxan at different dosages on <em>Coffea arabica</em> L seedlings. Two formulations of the insecticide Thiametoxan were used, dispersible granules (WG A) and granules (GR B), both diluted in water and treatments consisting of doses: 0% (control), 50%, 100% and 150% for both versions of the insecticide. The experimental design used was in randomized blocks, in a 2 x 4 factorial scheme, with three replications. After 180 days, the following parameters were evaluated: height, length of root and shoot, fresh and dry biomass of the root system and shoot. The use of Thiametoxan, in two applications, influenced the development of the root system, plant height, length and mass of the aerial part of the coffee seedlings in comparison with the control, not being observed the effect of different dosages of Thiametoxan in the development of the root system.</p> Welinton Blener Pereira de Assis, Kleso Silva Franco Júnior, Giselle Prado Brigante, Tamara Machado da Silva, Márcio de Souza Dias, Natália Scalco Ferreira Copyright (c) 2021 Revista Brasileira de Engenharia de Biossistemas Fri, 01 Oct 2021 00:00:00 +0000 USE OF FUZZY LOGIC TO OPTIMIZE FERTILIZER APPLICATION IN THE RADISH <p>The aim of this study was to develop a fuzzy-rules-based model to evaluate the effects caused by varying the dosages of two soil fertilizers (mineral and organic) on root diameter. Fuzzy logic is a method that presents a language, more appropriate to everyday life, as the sky is cloudy. For the input variables of this system, mineral and organic fertilizers were used, for the output the root diameter, in cm. After optimizing the input rules, it can be seen that for the application of fertilizers (mineral and organic) the best dosages were 15 to 60 and 20 to 60 g m<sup>-2</sup>, respectively. With this application of fuzzy rules in real data, these benefits can be taken to those involved in the radish production chain, thus resulting in a reduction in product dosages and improving its final profitability.</p> Emmanuel Zullo Godinho, Fernando de Lima Caneppele, Hélio Vagner Gasparotto Copyright (c) 2021 Revista Brasileira de Engenharia de Biossistemas Fri, 01 Oct 2021 00:00:00 +0000 MACROAGGREGATION OF A PALEUDALF AFFECTED BY CAVITATION INTENSITY AND MANAGEMENT SYSTEMS WITH COVER PLANTS <p>Ultrasonic-based techniques allow the prediction of the energy required to break the aggregate and have been more commonly used to measure the stability of aggregates. Although they result in the same applied energy, certain combinations of time and power might correspond to different intensities of cavitation. Consequently, different responses in aggregation indexes can be obtained with different configurations of ultrasound techniques. Thus, this work was carried out to evaluate the effects of cavitation intensity in the distribution of aggregates of a Paleudalf under management systems with cover plants and to compare aggregate stability determination methods (ultrasound versus wet sieving). Aggregate samples of the BS (bare soil), OT (black oat + forage turnips) and OV (black oat + hairy vetch) treatments were exposed to ultrasonic irradiation in different combinations of potency and time: (U1) 74.5 W/4 s; (U2) 49.7 W/6 s; (U3) 74.5 W/10 s and (U4) 49.7 W/15 s. After each sonification, the samples were passed in the same set of sieves used in the standard method of wet sieving -WS (8.00 - 4.76, 4.76 - 2.00, 2.00 - 1.00, 1.00 - 0.25 and &lt; 0.25 mm) and the geometric mean diameter (GMD) and mass-weighted mean diameter (WMD) were calculated. The amplitude of vibration exerted a greater influence on soil breakdown than the total energy applied. Compared to the ultrasound method, in the WS method observed higher percentage of retained aggregates in the size class 8-4.76 mm and, consequently, greater aggregation indexes GMD and WMD.</p> Érika Andressa Silva, Micael Stolben Mallmann, Monike Andrade Pereira, Sarah Severo Pons, Felipe Dalla –Zen Bertol, Dalvan José Reinert, José Miguel Reichert Copyright (c) 2021 Revista Brasileira de Engenharia de Biossistemas Tue, 05 Oct 2021 00:00:00 +0000 PERFORMANCE OF SUGARCANE CULTURE PRODUCTION IN THE MAIN PRODUCING STATES <p>The cultivation of sugarcane is one of the main sources for the production of sugar and ethanol in Brazil, measuring growth in the sector, especially after the regulation of flexfuel motor vehicles. In this sense, the objective of this work was to analyze the performance of the sugarcane cultivated area in the main producing states: São Paulo, Goiás, Minas Gerais and Mato Grosso do Sul. considered the period between 2000 and 2020; for ethanol and sugar production, the period between 2005 and 2020 was considered. Statistical analysis of the Pearson correlation (r) was performed between the studied variables, during the period from 2005 to 2020. In this sense, it was possible to observe the increase of the planted area in the analyzed regions, as well as the increase in the productivity of the crop and of the sugar-alcohol sector, mainly in the region of the Polygon of Agrohidronegócio, in the Center-South region of Brazil. Ethanol production showed growth over the period analyzed, influenced by the increase in the production of flexfuel vehicles.</p> Lazaro Quintino Alves, Petrus Narciso Franco, Willian Aparecido Leoti Zanetti, Bruno César Góes Copyright (c) 2021 Revista Brasileira de Engenharia de Biossistemas Wed, 13 Oct 2021 00:00:00 +0000 ARTIFICIAL NEURAL NETWORKS APPLIED TO THE MARANDU GRASS PRODUCTION ESTIMATE IN INTEGRATED SYSTEMS <p>Through the MatLab software's tools, in this work a graphic interface was developed to estimate the marandu grass using artificial neural networks and the graphic properties provided by the software, aiming, on top of the assertiveness and efficiency of the estimate, the development of the interface in a way in which lay people (regarding the subject and coding), have access to the designed tool, valuing already studied User Experience concepts and being able, this way, to be used in teaching areas related to neural networks, broading the access to information through the man-machine interface.</p> Alfredo Bonini Neto, Arthur Lopes Criscimani, Carolina dos Santos Batista Bonini, Jessica Fernanda Dias Souza , Gabriela Lozano Oliverio, Vitor Correia de Mattos Baretto, Cristiana Andrighetto Copyright (c) 2021 Revista Brasileira de Engenharia de Biossistemas Thu, 14 Oct 2021 00:00:00 +0000 PROPOSAL OF A SOLUTION FOR WATER DESALINIZATION USING SOLAR ENERGY <p>Water is abundant on Earth, only about 2.5% is freshwater, and because most of that water is stored as glaciers or deep groundwater, only a small amount of water is easily accessible to humans and animals. This study's motivation is to find a solution for lacking freshwater, converting brackish and seawater to potable water. The main goal was to produce potable water with high-efficiency production using solar energy. The system's main components were the absorber plate painted black, glass cover, insulation, and vessels to collect fresh water. The absorber plate is painted black to absorb solar radiation, preventing its reflection. The plate delivers higher temperatures for saline water to be evaporated and condensed afterward. The basin liner was made of an iron sheet, and the cover is made of ordinary glass, while the basin was covered with glass using silicon rubber. We used 30-degree single slope solar to identify the efficiency of using black stone without using black stone (control). The results showed that the maximum output with black stone and without it was respectively 750 ml and 600 ml; therefore, the use of black stone can increase the productivity for the single slope solar still.</p><p><strong>Keywords:</strong> Solar collector; Potable water; Brackish water.</p> Mohamad Rabai, Irenilza de Alencar Nääs Copyright (c) 2021 Revista Brasileira de Engenharia de Biossistemas Thu, 14 Oct 2021 00:00:00 +0000