Pub Date : 2023-11-13DOI: 10.18011/bioeng.2023.v17.1197
Vinícius Mastelini, Timóteo Ramos Queiroz, Luís Roberto Almeida Gabriel Filho, Mario Mollo Neto
Being classified as one of the most important species for fish farming, the Nile tilapia has seen a huge increase in breeding worldwide. As in any cultural medium, dealing with the quality of the medium in which it is grown guarantees a large part of the success of the process, being of equal importance, in this case, the quality of the water. Taking advantage of existing mathematical models, humans were able to measure and design best practices in virtually all areas, pointing to its great functionality, this article used the Fuzzy logic mathematical model together with Mamdani inference to analyze water quality scenarios and their consequences, various environments, variables, capable of directly affecting fish farming. The purpose was to use the MatLab scientific software to cross these variables with the possible output scenarios, facilitating the producer's decision-making. As a result of the research, it was possible to develop an algorithm to be embedded in a mobile application in the future with fuzzy mathematical modeling, with a Mamdani inference system for management and control of water quality in Nile Tilapia fish farming. The same will be made available to these breeders, since it has a structure of rules, aiming at the delivery of scientific information that collaborates with the best cultivation practices, improving production and profitability, through decision support to fish farmers.
{"title":"Control and management of water quality for Nile tilapia fish in net tanks based on fuzzy modeling","authors":"Vinícius Mastelini, Timóteo Ramos Queiroz, Luís Roberto Almeida Gabriel Filho, Mario Mollo Neto","doi":"10.18011/bioeng.2023.v17.1197","DOIUrl":"https://doi.org/10.18011/bioeng.2023.v17.1197","url":null,"abstract":"Being classified as one of the most important species for fish farming, the Nile tilapia has seen a huge increase in breeding worldwide. As in any cultural medium, dealing with the quality of the medium in which it is grown guarantees a large part of the success of the process, being of equal importance, in this case, the quality of the water. Taking advantage of existing mathematical models, humans were able to measure and design best practices in virtually all areas, pointing to its great functionality, this article used the Fuzzy logic mathematical model together with Mamdani inference to analyze water quality scenarios and their consequences, various environments, variables, capable of directly affecting fish farming. The purpose was to use the MatLab scientific software to cross these variables with the possible output scenarios, facilitating the producer's decision-making. As a result of the research, it was possible to develop an algorithm to be embedded in a mobile application in the future with fuzzy mathematical modeling, with a Mamdani inference system for management and control of water quality in Nile Tilapia fish farming. The same will be made available to these breeders, since it has a structure of rules, aiming at the delivery of scientific information that collaborates with the best cultivation practices, improving production and profitability, through decision support to fish farmers.","PeriodicalId":32292,"journal":{"name":"Revista Brasileira de Engenharia de Biossistemas","volume":"50 14","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136281645","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-09-14DOI: 10.18011/bioeng.2023.v17.1193
Emmanuel Zullo Godinho, Fernando De Lima Caneppele, Luís Roberto Almeida Gabriel Filho, Camila Pires Cremasco Gabriel
The coffee culture has great economic importance on the world stage, especially for Brazil. Considered one of the most traded commodities on the world's trading exchanges. Thus, the main objective of this study was to develop a system based on fuzzy rules to evaluate coffee productivity, using irrigation, soil water deficit and ambient temperature as the main production factors. The research was developed from searches of scientific data on the main variables for coffee production. The work was divided into two stages: the first in the scientific search for data collection and the second in the development of the fuzzy model. With this, it was parameterized that the input variables would be the temperature, the irrigation depth, and the water deficit of the soil and for the output variable the coffee productivity. Based on the model prediction, the fuzzy system showed which variable values are necessary for the best coffee productivity, by a set of rules involving the variation of water deficit (60%), temperature (30°C) and irrigation (300 mm), for a productivity of 24 sc ha-1. The performance of the fuzzy system was tested by comparing it with articles on the subject that relate coffee production with irrigation, water deficit and temperature of the environment and in almost all cases the model was efficient, reinforcing the assessment of the strength of the scheme, the analysis was extended to several scenarios relating the same three input variables.
{"title":"Fuzzy modeling of coffee productivity under different irrigation depths, water deficit and temperature","authors":"Emmanuel Zullo Godinho, Fernando De Lima Caneppele, Luís Roberto Almeida Gabriel Filho, Camila Pires Cremasco Gabriel","doi":"10.18011/bioeng.2023.v17.1193","DOIUrl":"https://doi.org/10.18011/bioeng.2023.v17.1193","url":null,"abstract":"The coffee culture has great economic importance on the world stage, especially for Brazil. Considered one of the most traded commodities on the world's trading exchanges. Thus, the main objective of this study was to develop a system based on fuzzy rules to evaluate coffee productivity, using irrigation, soil water deficit and ambient temperature as the main production factors. The research was developed from searches of scientific data on the main variables for coffee production. The work was divided into two stages: the first in the scientific search for data collection and the second in the development of the fuzzy model. With this, it was parameterized that the input variables would be the temperature, the irrigation depth, and the water deficit of the soil and for the output variable the coffee productivity. Based on the model prediction, the fuzzy system showed which variable values are necessary for the best coffee productivity, by a set of rules involving the variation of water deficit (60%), temperature (30°C) and irrigation (300 mm), for a productivity of 24 sc ha-1. The performance of the fuzzy system was tested by comparing it with articles on the subject that relate coffee production with irrigation, water deficit and temperature of the environment and in almost all cases the model was efficient, reinforcing the assessment of the strength of the scheme, the analysis was extended to several scenarios relating the same three input variables.","PeriodicalId":32292,"journal":{"name":"Revista Brasileira de Engenharia de Biossistemas","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134911418","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-09-05DOI: 10.18011/bioeng.2023.v17.1191
Ermadani, Amalia Viviani, Yasdi, Shally Yanopa, Suryanto, Arsyad, Ar, Sarman
Iron (Fe) and manganese (Mn) are heavy metals which are found in high concentration in highly weathered soils, especially in the tropics, resulting in high content of them in groundwater. These metals cause a distinctive odor, reddish brown, yellowish color, and high sediment. This condition could cause health problems when it is used as a source of drinking water. This study was aimed to evaluate the efficiency of activated carbon from corn cobs in reducing the concentrations of Fe and Mn from groundwater adsorption. The adsorption process was performed by applying activated carbon with varying doses of 0.1 g, 0.2 g, 0.3 g, 0.4 g, 0.5 g, 1 g, 1.5 g and 2 g into 100 ml groundwater. Variations of pH were pH 2, pH 3, pH 4, pH 5, pH 6, pH 7 and pH 8, and variations in contact time of 10, 30, 45, 60, 90 and 120 minutes. The results showed that the optimum doses to reduce Fe and Mn concentration from groundwater were 1 g and 0.5 g with the adsorption efficiency of 70.14% and 41.60% respectively. The optimum pH for both Fe and Mn was pH 4 with an adsorption efficiency of 75.44% and 56.52% respectively, while the optimum contact times were 60 and 30 minutes with an adsorption efficiency of 75.44 dan 59.29% respectively.
{"title":"The use of activated charcoal from corn cobs as adsorbent of heavy metals from groundwater","authors":"Ermadani, Amalia Viviani, Yasdi, Shally Yanopa, Suryanto, Arsyad, Ar, Sarman","doi":"10.18011/bioeng.2023.v17.1191","DOIUrl":"https://doi.org/10.18011/bioeng.2023.v17.1191","url":null,"abstract":"Iron (Fe) and manganese (Mn) are heavy metals which are found in high concentration in highly weathered soils, especially in the tropics, resulting in high content of them in groundwater. These metals cause a distinctive odor, reddish brown, yellowish color, and high sediment. This condition could cause health problems when it is used as a source of drinking water. This study was aimed to evaluate the efficiency of activated carbon from corn cobs in reducing the concentrations of Fe and Mn from groundwater adsorption. The adsorption process was performed by applying activated carbon with varying doses of 0.1 g, 0.2 g, 0.3 g, 0.4 g, 0.5 g, 1 g, 1.5 g and 2 g into 100 ml groundwater. Variations of pH were pH 2, pH 3, pH 4, pH 5, pH 6, pH 7 and pH 8, and variations in contact time of 10, 30, 45, 60, 90 and 120 minutes. The results showed that the optimum doses to reduce Fe and Mn concentration from groundwater were 1 g and 0.5 g with the adsorption efficiency of 70.14% and 41.60% respectively. The optimum pH for both Fe and Mn was pH 4 with an adsorption efficiency of 75.44% and 56.52% respectively, while the optimum contact times were 60 and 30 minutes with an adsorption efficiency of 75.44 dan 59.29% respectively.","PeriodicalId":32292,"journal":{"name":"Revista Brasileira de Engenharia de Biossistemas","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46187356","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-08-10DOI: 10.18011/bioeng.2023.v17.1108
Job Teixeira de Oliveira, Rubens Alves de Oliveira, Gloria Milena Rojas Plazas, Cassiano Garcia Roque
Garlic is a product with high demand in Brazil and worldwide, being highly valued in the cuisine of several countries and is a culture with high added economic value. In 2018, this work was carried out in the irrigation and drainage area of the Federal University of Viçosa, in Viçosa, Minas Gerais State, Brazil, in a Oxisol. The objective was to characterize the structure and magnitude of the spatial distribution of physical attributes of a Oxisol, perform the mapping, and evaluate the spatial correlation between garlic bulb yield, lateral shoot growing and soil characteristics. The attributes studied were garlic bulb yield, lateral shoot growing, soil moisture on a dry basis, soil moisture on a humid basis, volumetric soil moisture, particle density, free soil porosity, sampled in a 90-georeferenced grid. Data analysis using statistical techniques and geostatistics made it possible to verify that the garlic yield and other soil physical attributes studied showed spatial dependence. There was an emphasis on the spatial correlation between garlic bulb yield and free-soil porosity. The lateral shoot growing of garlic has a direct and positive relationship with free soil porosity, soil moisture on a dry basis and soil moisture on a humid basis.
{"title":"Spatial variability of physical attributes of a Oxisol related to garlic productivity","authors":"Job Teixeira de Oliveira, Rubens Alves de Oliveira, Gloria Milena Rojas Plazas, Cassiano Garcia Roque","doi":"10.18011/bioeng.2023.v17.1108","DOIUrl":"https://doi.org/10.18011/bioeng.2023.v17.1108","url":null,"abstract":"Garlic is a product with high demand in Brazil and worldwide, being highly valued in the cuisine of several countries and is a culture with high added economic value. In 2018, this work was carried out in the irrigation and drainage area of the Federal University of Viçosa, in Viçosa, Minas Gerais State, Brazil, in a Oxisol. The objective was to characterize the structure and magnitude of the spatial distribution of physical attributes of a Oxisol, perform the mapping, and evaluate the spatial correlation between garlic bulb yield, lateral shoot growing and soil characteristics. The attributes studied were garlic bulb yield, lateral shoot growing, soil moisture on a dry basis, soil moisture on a humid basis, volumetric soil moisture, particle density, free soil porosity, sampled in a 90-georeferenced grid. Data analysis using statistical techniques and geostatistics made it possible to verify that the garlic yield and other soil physical attributes studied showed spatial dependence. There was an emphasis on the spatial correlation between garlic bulb yield and free-soil porosity. The lateral shoot growing of garlic has a direct and positive relationship with free soil porosity, soil moisture on a dry basis and soil moisture on a humid basis.","PeriodicalId":32292,"journal":{"name":"Revista Brasileira de Engenharia de Biossistemas","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46691729","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-07-17DOI: 10.18011/bioeng.2023.v17.1109
Job Teixeira de Oliveira, Rubens Alves de Oliveira, Gloria Milena Rojas Plazas, Sinomar Moreira Andrade, Fernando França da Cunha
Spatial autocorrelation, which in this work was calculated using Moran's bivariate analysis, can be defined as the coincidence of similar values in nearby locations, or the absence of randomness of a variable due to its spatial distribution. Therefore, the objective of this study is to analyze the distribution and spatial autocorrelation of physical attributes of an Oxisol. The experiment was carried out in the irrigation and drainage area of the Universidade Federal de Viçosa, in Viçosa, Minas Gerais, Brazil. The soil in which the experimental meshes were installed was classified as a sandy clayey Oxisol. The attributes were determined: soil moisture on a dry basis, % (DB), soil moisture on a wet basis, % (WB), volumetric soil moisture, % (VS), particle density, g cm-1 (PD), sampled at different depths and within a grid of 90 georeferenced points. For spatial autocorrelation, the global Moran and local Moran indexes (LISA) were used as statistical tools. Bivariate analysis revealed that soil volumetric moisture is closely related to wet and dry basis moisture. It was also found that the surface particle density is related to the deeper layers of the soil, thus reinforcing that the solid fraction of a soil sample, without considering porosity, tends to remain constant. This happens because the predominant mineral constituents in soils are quartz, feldspars, and colloidal aluminum silicates, whose particle densities are around 2.65 g cm-3.
在这项工作中，空间自相关是使用莫兰的双变量分析计算的，可以定义为附近位置相似值的一致性，或者由于变量的空间分布而不存在随机性。因此，本研究的目的是分析氧化物溶胶物理属性的分布和空间自相关。该实验在巴西米纳斯吉拉斯州维索萨的维索萨联邦大学的灌溉和排水区进行。安装了实验网的土壤被归类为砂质粘土质Oxisol。确定了属性：在不同深度和90个地理参考点的网格内取样的干基土壤湿度、%（DB）、湿基土壤湿度%（WB）、体积土壤湿度、百分比（VS）、颗粒密度g cm-1（PD）。对于空间自相关，使用全局莫兰指数和局部莫兰指数（LISA）作为统计工具。双变量分析表明，土壤体积含水率与干湿基含水率密切相关。研究还发现，表面颗粒密度与土壤的深层有关，从而强化了土壤样品的固体分数在不考虑孔隙率的情况下往往保持不变。这是因为土壤中主要的矿物成分是石英、长石和胶体硅酸铝，其颗粒密度约为2.65 g cm-3。
{"title":"Distribution and spatial autocorrelation of physical-water attributes of an Oxisol","authors":"Job Teixeira de Oliveira, Rubens Alves de Oliveira, Gloria Milena Rojas Plazas, Sinomar Moreira Andrade, Fernando França da Cunha","doi":"10.18011/bioeng.2023.v17.1109","DOIUrl":"https://doi.org/10.18011/bioeng.2023.v17.1109","url":null,"abstract":"Spatial autocorrelation, which in this work was calculated using Moran's bivariate analysis, can be defined as the coincidence of similar values in nearby locations, or the absence of randomness of a variable due to its spatial distribution. Therefore, the objective of this study is to analyze the distribution and spatial autocorrelation of physical attributes of an Oxisol. The experiment was carried out in the irrigation and drainage area of the Universidade Federal de Viçosa, in Viçosa, Minas Gerais, Brazil. The soil in which the experimental meshes were installed was classified as a sandy clayey Oxisol. The attributes were determined: soil moisture on a dry basis, % (DB), soil moisture on a wet basis, % (WB), volumetric soil moisture, % (VS), particle density, g cm-1 (PD), sampled at different depths and within a grid of 90 georeferenced points. For spatial autocorrelation, the global Moran and local Moran indexes (LISA) were used as statistical tools. Bivariate analysis revealed that soil volumetric moisture is closely related to wet and dry basis moisture. It was also found that the surface particle density is related to the deeper layers of the soil, thus reinforcing that the solid fraction of a soil sample, without considering porosity, tends to remain constant. This happens because the predominant mineral constituents in soils are quartz, feldspars, and colloidal aluminum silicates, whose particle densities are around 2.65 g cm-3.","PeriodicalId":32292,"journal":{"name":"Revista Brasileira de Engenharia de Biossistemas","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42412381","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-05-11DOI: 10.18011/bioeng.2023.v17.1186
Fabiano Pinto Neves, Alisson Rodolfo Leite, Leandro Paloma Mantovani Mantovani, Celso da Silva, L. R. G. Gabriel Filho, S. Oliveira
The importance and economic representativeness of the peanut production chain has grown exponentially in recent years, tending to gain more market share. Background: The study had as its theme the question: What is the economic, technological, social and environmental relevance of the peanut production chain for Brazil? Objective: Conduct a survey of information and data that allow inferring the economic, social and environmental importance of the peanut production chain for Brazil in the global scenario. Methods: The methodology applied was exploratory research "ad hoc" in exploratory theoretical essay of qualitative approach, and analytical descriptive in the report of the findings. Results: Exports grow on a logarithmic scale, in 2020 it had revenues of US$ 427.8 million. The sector generates 42 thousand jobs, and the culture makes it possible to meet social and environmental demands. Conclusions: The adoption of technologies and the improvement of production methods are essential for the continuous progress of the sector with the creation of jobs and the adhesion of new producers, with an increasingly sustainable production, with less environmental impact and reduction of fertilizer waste, with expansion of the productive capacity per planted bushel.
{"title":"The economic importance of the peanuts production chain","authors":"Fabiano Pinto Neves, Alisson Rodolfo Leite, Leandro Paloma Mantovani Mantovani, Celso da Silva, L. R. G. Gabriel Filho, S. Oliveira","doi":"10.18011/bioeng.2023.v17.1186","DOIUrl":"https://doi.org/10.18011/bioeng.2023.v17.1186","url":null,"abstract":"The importance and economic representativeness of the peanut production chain has grown exponentially in recent years, tending to gain more market share. Background: The study had as its theme the question: What is the economic, technological, social and environmental relevance of the peanut production chain for Brazil? Objective: Conduct a survey of information and data that allow inferring the economic, social and environmental importance of the peanut production chain for Brazil in the global scenario. Methods: The methodology applied was exploratory research \"ad hoc\" in exploratory theoretical essay of qualitative approach, and analytical descriptive in the report of the findings. Results: Exports grow on a logarithmic scale, in 2020 it had revenues of US$ 427.8 million. The sector generates 42 thousand jobs, and the culture makes it possible to meet social and environmental demands. Conclusions: The adoption of technologies and the improvement of production methods are essential for the continuous progress of the sector with the creation of jobs and the adhesion of new producers, with an increasingly sustainable production, with less environmental impact and reduction of fertilizer waste, with expansion of the productive capacity per planted bushel.","PeriodicalId":32292,"journal":{"name":"Revista Brasileira de Engenharia de Biossistemas","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49167472","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-05-11DOI: 10.18011/bioeng.2023.v17.1195
P. H. Gorni, Denis Wesley Polimeno
Glucose promotes increases in physiological processes related to plant growth and induces cell division and can also act in seed germination. The present investigation has been carried out on the influence of various concentrations of glucose on the germination performance of soybeans seeds of cv. BMX and 66i68. Seeds of soybeans (Glycine max (L.) Merrill) were treated with three concentrations of the glucose (0.05, 0.10 and 0.20 mmol L-1), and a control with distilled water. Tests of seed germination and vigor were carried out: it was calculated the germination percentage (first and final counting), percentage of normal seedlings; and speed of germination, length of the primary root and the aerial part of seedlings were recorded. The experiment was arranged in a completely randomized design with three treatments and five repetitions depending on the test. Increasing doses of the plant growth regulator influence the germination and can increase the speed of germination. The use of glucose in the treatment of soybean seeds, increases the rate of germination and emergence speed, growth of the root system and medium of seedlings. Soybean cultivar BMX seeds showed an increase in physiological performance with increasing glucose dosage.
{"title":"Effect of glucose on germination performance in two soybean cultivars","authors":"P. H. Gorni, Denis Wesley Polimeno","doi":"10.18011/bioeng.2023.v17.1195","DOIUrl":"https://doi.org/10.18011/bioeng.2023.v17.1195","url":null,"abstract":"Glucose promotes increases in physiological processes related to plant growth and induces cell division and can also act in seed germination. The present investigation has been carried out on the influence of various concentrations of glucose on the germination performance of soybeans seeds of cv. BMX and 66i68. Seeds of soybeans (Glycine max (L.) Merrill) were treated with three concentrations of the glucose (0.05, 0.10 and 0.20 mmol L-1), and a control with distilled water. Tests of seed germination and vigor were carried out: it was calculated the germination percentage (first and final counting), percentage of normal seedlings; and speed of germination, length of the primary root and the aerial part of seedlings were recorded. The experiment was arranged in a completely randomized design with three treatments and five repetitions depending on the test. Increasing doses of the plant growth regulator influence the germination and can increase the speed of germination. The use of glucose in the treatment of soybean seeds, increases the rate of germination and emergence speed, growth of the root system and medium of seedlings. Soybean cultivar BMX seeds showed an increase in physiological performance with increasing glucose dosage.","PeriodicalId":32292,"journal":{"name":"Revista Brasileira de Engenharia de Biossistemas","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44513058","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-05-11DOI: 10.18011/bioeng.2023.v17.1194
Célia Maria da Silva, A. A. Ribeiro, Evandro Fabio Da Silva, Mayana Garcias Da Silva, Suelem Vieira Alencar, Sebastião Andrey Vicente Paulo
The study of cotton plant responses to nitrogen fertilization in different climate and soil conditions is essential for the correct management of nitrogen in this crop. Therefore, the objective of the present study was to evaluate the responses of cotton plants to nitrogen fertilization in the edaphoclimatic conditions of the Cariri region, located in the northeastern State of Ceará, Brazil. The experiment was conducted in an experimental area at the CENTEC (Centre for Technological Education) School of Technology (FATEC - Cariri campus), located in the city of Juazeiro do Norte, Ceará State. The statistical design adopted was Completely Randomized Design (CRD). The treatments were composed from the combination of four doses of nitrogen (0, 60, 120, and 180 kg ha-1 of N, equivalent to 0, 50, 100, and 150% of the N recommendation for the crop) with four replications. Urea was used as a nitrogen source. At 42 days after sowing, the plants were collected. Plant height, number of leaves, stem diameter, leaf area, absolute growth rate, shoot and root dry matter, total and nitrogen use efficiency were evaluated. The different doses of nitrogen significantly influenced all the analysed variables. In general, nitrogen doses greater than 120 kg ha-1 of N were shown to impair the growth and dry matter production of the cotton plant in the climate and soil conditions of the Cariri region, northeastern Brazil. In addition, excessive nitrogen fertilization was shown to reduce the efficiency of nitrogen use by the cotton crop.
研究不同气候和土壤条件下棉花植株对氮肥的响应，对棉花的正确氮肥管理具有重要意义。因此，本研究的目的是评估位于巴西塞埃尔州东北部卡里里地区土壤气候条件下棉花植株对氮肥的响应。该实验是在CENTEC(技术教育中心)技术学院(FATEC - Cariri校区)的一个实验区进行的，该实验区位于塞州Juazeiro do Norte市。采用完全随机设计(CRD)进行统计设计。处理由4个剂量的氮肥组合组成(0、60、120和180 kg hm -1 N，相当于该作物推荐用量的0、50、100和150%)，共4个重复。尿素作为氮源。播种后42天，收集植株。评价了株高、叶数、茎粗、叶面积、绝对生长率、地上部和根部干物质、全氮利用效率和氮素利用效率。不同剂量的氮对所有分析变量均有显著影响。总体而言，在巴西东北部卡里里地区的气候和土壤条件下，大于120 kg hm -1的氮肥剂量会损害棉花的生长和干物质生产。此外，过量施氮会降低棉花对氮的利用效率。
{"title":"Cotton nitrogen doses in the edaphoclimatical conditions of northeastern Brazil","authors":"Célia Maria da Silva, A. A. Ribeiro, Evandro Fabio Da Silva, Mayana Garcias Da Silva, Suelem Vieira Alencar, Sebastião Andrey Vicente Paulo","doi":"10.18011/bioeng.2023.v17.1194","DOIUrl":"https://doi.org/10.18011/bioeng.2023.v17.1194","url":null,"abstract":"The study of cotton plant responses to nitrogen fertilization in different climate and soil conditions is essential for the correct management of nitrogen in this crop. Therefore, the objective of the present study was to evaluate the responses of cotton plants to nitrogen fertilization in the edaphoclimatic conditions of the Cariri region, located in the northeastern State of Ceará, Brazil. The experiment was conducted in an experimental area at the CENTEC (Centre for Technological Education) School of Technology (FATEC - Cariri campus), located in the city of Juazeiro do Norte, Ceará State. The statistical design adopted was Completely Randomized Design (CRD). The treatments were composed from the combination of four doses of nitrogen (0, 60, 120, and 180 kg ha-1 of N, equivalent to 0, 50, 100, and 150% of the N recommendation for the crop) with four replications. Urea was used as a nitrogen source. At 42 days after sowing, the plants were collected. Plant height, number of leaves, stem diameter, leaf area, absolute growth rate, shoot and root dry matter, total and nitrogen use efficiency were evaluated. The different doses of nitrogen significantly influenced all the analysed variables. In general, nitrogen doses greater than 120 kg ha-1 of N were shown to impair the growth and dry matter production of the cotton plant in the climate and soil conditions of the Cariri region, northeastern Brazil. In addition, excessive nitrogen fertilization was shown to reduce the efficiency of nitrogen use by the cotton crop.","PeriodicalId":32292,"journal":{"name":"Revista Brasileira de Engenharia de Biossistemas","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48647987","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-02-27DOI: 10.18011/bioeng.2023.v17.1184
Kleso Silva Franco Júnior, A. Calegari, M. Dias, Giselle Prado Brigante
Brazil is the world's largest coffee producer, but with the changes in climate that have occurred in recent years, the concern with soil management with cover crops has become important, since it configures a strategy that can contribute to the improvement of production systems. Brachiaria is one of the main species used in intercropping in coffee production to generate biomass and soil cover. The objective of this research was to evaluate the effect of the distance of brachiaria management in between rows of coffee trees. The research was carried out from 2016 to 2022 in a coffee plantation implanted in 2016 with the cultivar Catuai Amarelo IAC 62 associated with Brachiaria ruziziensis, in a randomized block design, with 6 treatments and 4 replications: T1- without brachiaria between the rows (control), T2 - management of brachiaria up to the projection of the coffee tree crown, T3 - management with 25 cm distance from the projection of the crown of the coffee tree, T4 - management with 50 cm away from the projection of the coffee tree crown, T5 - management with 75 cm distance from the projection of the coffee tree crown, T6 - management with 100 cm distance from the projection of the coffee tree crown. The evaluated parameters were: setting and establishment of coffee seedlings, height of the orthotropic branches, length of the plagiotropic branches, number of internodes, and productivity. The intercropping of the coffee tree with brachiaria must be managed at 50 cm from the projection of the plagiotropic branch of the coffee tree, aiming at non-competition and better development of the crop.
{"title":"Distance of brachiaria management in between the rows of coffee trees","authors":"Kleso Silva Franco Júnior, A. Calegari, M. Dias, Giselle Prado Brigante","doi":"10.18011/bioeng.2023.v17.1184","DOIUrl":"https://doi.org/10.18011/bioeng.2023.v17.1184","url":null,"abstract":"Brazil is the world's largest coffee producer, but with the changes in climate that have occurred in recent years, the concern with soil management with cover crops has become important, since it configures a strategy that can contribute to the improvement of production systems. Brachiaria is one of the main species used in intercropping in coffee production to generate biomass and soil cover. The objective of this research was to evaluate the effect of the distance of brachiaria management in between rows of coffee trees. The research was carried out from 2016 to 2022 in a coffee plantation implanted in 2016 with the cultivar Catuai Amarelo IAC 62 associated with Brachiaria ruziziensis, in a randomized block design, with 6 treatments and 4 replications: T1- without brachiaria between the rows (control), T2 - management of brachiaria up to the projection of the coffee tree crown, T3 - management with 25 cm distance from the projection of the crown of the coffee tree, T4 - management with 50 cm away from the projection of the coffee tree crown, T5 - management with 75 cm distance from the projection of the coffee tree crown, T6 - management with 100 cm distance from the projection of the coffee tree crown. The evaluated parameters were: setting and establishment of coffee seedlings, height of the orthotropic branches, length of the plagiotropic branches, number of internodes, and productivity. The intercropping of the coffee tree with brachiaria must be managed at 50 cm from the projection of the plagiotropic branch of the coffee tree, aiming at non-competition and better development of the crop.","PeriodicalId":32292,"journal":{"name":"Revista Brasileira de Engenharia de Biossistemas","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41912734","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-02-16DOI: 10.18011/bioeng.2023.v17.1069
Ilca Puertas de Freitas e Silva, Josué Ferreira Silva Junior, Caio Antonio Carbonari, Edivaldo Domingues Velini, Rosilaine Araldi de Castro, L. Tropaldi, João Domingos Rodrigues
The presence of weeds in forest estates is considered one of the biggest problems in the implantation, maintenance, and renovation of eucalyptus plantations. This research aims to evaluate the phytotoxicity of herbicides on eucalyptus and I. nil. The experiment was installed inside a greenhouse in a completely randomized design with five replications. The treatments consisted of the application of 0.2% (v/v) adjuvant with the herbicides: atrazine (2250 g i.a. ha-1), clomazone (720 g i.a. ha-1), sulfentrazone (600 g i.a. ha-1), glyphosate (1440 g i.a. ha-1), and control. The following variables were analyzed: electron transport rate (ETR), water consumption, and plant phytotoxicity. For I. nil plants treated with atrazine, it was possible to detect phytotoxicity previous to the appearance of symptoms in the visual analysis, due to the inhibition of ETR at 24 hours after application (HAA). The highest levels of phytotoxicity for eucalyptus and I. nil were obtained by glyphosate and sulfentrazone, respectively.
林地中杂草的存在被认为是桉树种植园种植、维护和翻新中最大的问题之一。本研究旨在评价除草剂对桉树和I.nil的植物毒性。该实验以完全随机的设计安装在温室内，共进行了五次重复。处理包括施用0.2%（v/v）的佐剂和除草剂：阿特拉津（2250 g i.a.ha-1）、氯马松（720 g i.a.ha-1）、亚磺甲唑酮（600 g i.a.a-1）、草甘膦（1440 g i.a.ha-1）和对照。分析了以下变量：电子传输速率（ETR）、耗水量和植物毒性。对于用阿特拉津处理的I.nil植物，由于施用后24小时ETR的抑制作用（HAA），在视觉分析中可以在症状出现之前检测到植物毒性。草甘膦和亚磺甲唑酮对桉树和I.nil的植物毒性最高。
{"title":"Eucalyptus and Ipomoea nil phytotoxicity after herbicide application","authors":"Ilca Puertas de Freitas e Silva, Josué Ferreira Silva Junior, Caio Antonio Carbonari, Edivaldo Domingues Velini, Rosilaine Araldi de Castro, L. Tropaldi, João Domingos Rodrigues","doi":"10.18011/bioeng.2023.v17.1069","DOIUrl":"https://doi.org/10.18011/bioeng.2023.v17.1069","url":null,"abstract":"The presence of weeds in forest estates is considered one of the biggest problems in the implantation, maintenance, and renovation of eucalyptus plantations. This research aims to evaluate the phytotoxicity of herbicides on eucalyptus and I. nil. The experiment was installed inside a greenhouse in a completely randomized design with five replications. The treatments consisted of the application of 0.2% (v/v) adjuvant with the herbicides: atrazine (2250 g i.a. ha-1), clomazone (720 g i.a. ha-1), sulfentrazone (600 g i.a. ha-1), glyphosate (1440 g i.a. ha-1), and control. The following variables were analyzed: electron transport rate (ETR), water consumption, and plant phytotoxicity. For I. nil plants treated with atrazine, it was possible to detect phytotoxicity previous to the appearance of symptoms in the visual analysis, due to the inhibition of ETR at 24 hours after application (HAA). The highest levels of phytotoxicity for eucalyptus and I. nil were obtained by glyphosate and sulfentrazone, respectively.","PeriodicalId":32292,"journal":{"name":"Revista Brasileira de Engenharia de Biossistemas","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44159537","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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