Engenharia Agricola最新文献

OPTIMUM WATER RANGE AND LOAD-BEARING CAPACITY IN SOIL MANAGEMENT SYSTEMS, STRAW REMAINING, AND CHISELING IN SUGARCANE 土壤管理系统的最佳水分范围和承载能力，秸秆残留和甘蔗的凿凿

4区农林科学

Engenharia Agricola Pub Date : 2023-01-01 DOI: 10.1590/1809-4430-eng.agric.v43n3e20220084/2023

Michele da S. Gomes, Sálvio N. S. Arcoverde, Carlos H. Kurihara, Michely Tomazi, Cesar J. da Silva

{"title":"OPTIMUM WATER RANGE AND LOAD-BEARING CAPACITY IN SOIL MANAGEMENT SYSTEMS, STRAW REMAINING, AND CHISELING IN SUGARCANE","authors":"Michele da S. Gomes, Sálvio N. S. Arcoverde, Carlos H. Kurihara, Michely Tomazi, Cesar J. da Silva","doi":"10.1590/1809-4430-eng.agric.v43n3e20220084/2023","DOIUrl":"https://doi.org/10.1590/1809-4430-eng.agric.v43n3e20220084/2023","url":null,"abstract":"Sugarcane requires planning aimed at maintaining production levels, technological quality, and longevity of the sugarcane field, as it is a semi-perennial crop. To this end, the adoption of soil management systems associated with the maintenance of remaining straw are some of the strategies aimed at protecting the soil structure and its properties vital to the sustainability of agricultural systems. In this context, this study aimed to evaluate the influence of soil management systems and remaining straw with and without ratoon chiseling on the optimum water range (OWR) and load-bearing capacity (LBC) of the soil. The experimental design consisted of randomized blocks in a split-plot scheme, with four replications. The plots were composed of no-tillage and conventional tillage, the subplots consisted of three levels of remaining straw (0, 50, and 100%), and the sub-subplots consisted of the use or not of chiseling. Samples with preserved structures were collected at depths of 0.05 and 0.15 m for the analysis of the physical indicators OWR and LBC. Maintaining 100% straw associated with the use of chiseling resulted in an increase in OWR in both soil management systems and depths. Maintaining straw at 50 and 100% also led to lower LBC values in the evaluated soil management systems and depths, suggesting an improvement in soil physical quality. The use of chiseling of ratoons in conventional tillage promoted higher LBC values, indicating possible additional soil compaction in these areas.","PeriodicalId":50525,"journal":{"name":"Engenharia Agricola","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135104847","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

DISCRETE ELEMENT-BASED DESIGN OF KEY PARAMETERS FOR WHEEL RUT TILLAGE DEVICES 基于离散元的轮轨耕作装置关键参数设计

4区农林科学

Engenharia Agricola Pub Date : 2023-01-01 DOI: 10.1590/1809-4430-eng.agric.v43n3e20230039/2023

Haiyang Zhuang, Xianliang Wang, Xiangcai Zhang, Xiupei Cheng, Zhongcai Wei

{"title":"DISCRETE ELEMENT-BASED DESIGN OF KEY PARAMETERS FOR WHEEL RUT TILLAGE DEVICES","authors":"Haiyang Zhuang, Xianliang Wang, Xiangcai Zhang, Xiupei Cheng, Zhongcai Wei","doi":"10.1590/1809-4430-eng.agric.v43n3e20230039/2023","DOIUrl":"https://doi.org/10.1590/1809-4430-eng.agric.v43n3e20230039/2023","url":null,"abstract":"In this study, a device was designed for tillage of compacted soil in wheel ruts formed by the repeated passage of agricultural machines.[Ed1] Soil parameters were measured, and then the wheel rut tillage device was divided into two parts, the soil lifting unit and the soil breaking unit, for separate simulation tests to study the tillage process. EDEM[Ed2] simulations were applied to the soil lifting device to compare and analyze the microscopic movement of the simulated soil particles and the operational resistance of the device. Analysis of variance (ANOVA) was performed using Design-Expert10 [Ed3] software to obtain the optimum combination of parameters of 125 mm device offset distance, 43.6° entry angle and 28° lifting angle. A full-factor test was conducted on the soil crushing device using EDEM coupled with RecuDyn multi-body system dynamics simulation software. The number of bond breaks and the traction resistance of the soil crushing device were used as the test indicators, and the optimum parameters were obtained for a soil crushing knife blade thickness of 6 mm and a cutting edge angle of 30° for the largest number of bond breaks and least traction resistance. The results of this study will provide technical support for the reduction of compaction zones in wheel ruts after tire travel on agricultural machinery in real time.","PeriodicalId":50525,"journal":{"name":"Engenharia Agricola","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135213939","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

WATER DEMAND AND WATER USE EFFICIENCY IN ‘PALMER’ MANGO CULTIVATION IN THE LOW-MIDDLE SÃO FRANCISCO VALLEY sÃo Francisco河谷中下游“palmer”芒果种植的需水量和水分利用效率

4区农林科学

Engenharia Agricola Pub Date : 2023-01-01 DOI: 10.1590/1809-4430-eng.agric.v43n3e20220189/2023

Francisco B. da Silva Junior, Marcelo J. da Silva, Herica F. de S. Carvalho, Cloves Vilas Boas dos Santos, Thieres G. F. da Silva, Luciana S. B. de Souza, Mario de M. Vilas Boas R. Leitão, Magna S. B. de Moura

{"title":"WATER DEMAND AND WATER USE EFFICIENCY IN ‘PALMER’ MANGO CULTIVATION IN THE LOW-MIDDLE SÃO FRANCISCO VALLEY","authors":"Francisco B. da Silva Junior, Marcelo J. da Silva, Herica F. de S. Carvalho, Cloves Vilas Boas dos Santos, Thieres G. F. da Silva, Luciana S. B. de Souza, Mario de M. Vilas Boas R. Leitão, Magna S. B. de Moura","doi":"10.1590/1809-4430-eng.agric.v43n3e20220189/2023","DOIUrl":"https://doi.org/10.1590/1809-4430-eng.agric.v43n3e20220189/2023","url":null,"abstract":"The study aimed to determine the evapotranspiration (ETc) of the mango cv. ‘Palmer’ over two productive cycles, analyzing water-use efficiency (WUE) and crop water productivity (CWP) to propose average crop coefficient (Kc) values for improving irrigation management under cultivation conditions in the Low-Middle São Francisco Valley. The study was conducted from July 2019 to May 2021 in a commercial ‘Palmer’ mango orchard in Petrolina, State of Pernambuco, Brazil. Micrometeorological data was collected throughout the experimental period. The crop evapotranspiration (ETc) was determined using Bowen ratio energy balance (BREB), and then the Kc, WUE, and CWP were determined. The highest ETc values occurred during the floral induction phase (5.14 ± 0.85 mm day-1), with a Kc of 0.85; however, the lowest values were observed during the fruit maturation phase (3.60 ± 0.73 mm day-1), with a Kc of 0.91. Average water consumption per cycle was 1445 mm, with a daily average of 4.39 mm day-1. WUE and CWP were 16.9 and 24.5 kg ha-1 mm-1, respectively. Average Kc values of 0.81, 0.76, 0.85, 0.90, 0.95, and 0.91 are recommended for the vegetative growth, rest period and shoot maturation, floral induction, flowering, fruit development, and fruit maturation phases, respectively.","PeriodicalId":50525,"journal":{"name":"Engenharia Agricola","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135549299","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

USING REMOTELY PILOTED AIRCRAFT (RPA) IMAGERY TO MAP THE PROFITABILITY OF COTTON CROPS 使用遥控飞机(rpa)图像来绘制棉花作物的盈利情况

4区农林科学

Engenharia Agricola Pub Date : 2023-01-01 DOI: 10.1590/1809-4430-eng.agric.v43n3e20220218/2023

Erli P. dos Santos, Michel C. Moreira, Charles C. Santana, Fabiano J. Perina, Renata R. P. Cruz, Luís G. Carvalho

{"title":"USING REMOTELY PILOTED AIRCRAFT (RPA) IMAGERY TO MAP THE PROFITABILITY OF COTTON CROPS","authors":"Erli P. dos Santos, Michel C. Moreira, Charles C. Santana, Fabiano J. Perina, Renata R. P. Cruz, Luís G. Carvalho","doi":"10.1590/1809-4430-eng.agric.v43n3e20220218/2023","DOIUrl":"https://doi.org/10.1590/1809-4430-eng.agric.v43n3e20220218/2023","url":null,"abstract":"The goal of this paper was to apply a method for the delineation of vegetation homogeneous zones (HZs) to map the profitability of cotton ( Gossypium sp.) using NDVI (Normalized Difference Vegetation Index) data from RPA imagery. Two irrigated cotton crops, at the FAU (103 ha) and FRP farms (106 ha), located in the western region of Bahia State, Brazil, were studied. The NDVI images were classified into three HZs: “high”, “medium” and “low” plant vigor; using the k-means clustering method. In each HZ the yield was measured, and the profitability estimated. In FAU we found that the lower the HZ’s NDVI values, the lower its profitability, because there was profit in the “high vigor” HZ, of US$ 829.40 ha-1, and loss in the “low vigor” HZ, of about US$ ‒1.256.09 ha-1 (‒251.44% compared with the “high vigor”). In the FRP plantation, the lower the NDVI values, the lower the loss of the plantation, as there were losses in all HZs: from “high” to “low vigor” HZ, the percentage difference in profitability was ‒343.43%. Thus, the use of a low-cost modified near-infrared Canon S100 on an RPA enabled the mapping of crop profitability, aiding the search for the factors behind yield variability.","PeriodicalId":50525,"journal":{"name":"Engenharia Agricola","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135550489","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

EVALUATION OF AMMONIA SENSOR MODULES IN A COMPOST BARN SYSTEM DURING WINTER IN BRAZIL 巴西冬季堆肥仓系统中氨传感器模块的评估

4区农林科学

Engenharia Agricola Pub Date : 2023-01-01 DOI: 10.1590/1809-4430-eng.agric.v43n4e20230062/2023

Victor C. de Oliveira, Ilda de F. F. Tinôco, Leonardo F. da Silva, Carlos E. A. Oliveira, Flávio A. Damasceno, Jairo A. O. Saraz

{"title":"EVALUATION OF AMMONIA SENSOR MODULES IN A COMPOST BARN SYSTEM DURING WINTER IN BRAZIL","authors":"Victor C. de Oliveira, Ilda de F. F. Tinôco, Leonardo F. da Silva, Carlos E. A. Oliveira, Flávio A. Damasceno, Jairo A. O. Saraz","doi":"10.1590/1809-4430-eng.agric.v43n4e20230062/2023","DOIUrl":"https://doi.org/10.1590/1809-4430-eng.agric.v43n4e20230062/2023","url":null,"abstract":"This study aimed to characterize the performance of three electrochemical ammonia sensor modules (MQ137, FECS44-100, and MIX2801) in comparison to standard equipment (iPMU) under atmospheric conditions of an open Compost Barn (CB) during the winter period in Brazil. The study was conducted in Cajuri (MG) over three days, collecting data from 06 am to 05 pm on ammonia concentration, temperature, relative humidity, and air velocity in the CB, specifically at the center of the bedding area. The evaluation period was divided into three parts: Period 1 (06 to 09 am); Period 2 (10 am to 01 pm); and Period 3 (02 pm to 05 pm). Recorded data were analyzed using descriptive statistics. It was observed that the greatest discrepancy among the readings occurred in Period 1 (for all sensor modules and the iPMU), due to air saturation conditions. In Periods 2 and 3, readings from the sensor modules closely matched those recorded by the iPMU. Throughout all periods, the MIX2801 showed the most significant discrepancies compared to the iPMU, whereas the MQ137 was the closest to the standard equipment. This finding suggests that the MQ137 is a viable option for use in CB facilities.","PeriodicalId":50525,"journal":{"name":"Engenharia Agricola","volume":"142 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135660257","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

DESIGN AND EXPERIMENT OF MULTICHANNEL CAMELLIA-FRUIT-PICKING DEVICE 多通道茶花采摘装置的设计与试验

4区农林科学

Engenharia Agricola Pub Date : 2023-01-01 DOI: 10.1590/1809-4430-eng.agric.v43n3e20220038/2023

Qingsong Li, Lichun Kang, Honghui Rao, Muhua Liu

引用次数: 0

DESIGN AND EXPERIMENTS FOR SHOVEL-FINGER AND CYLINDER PEANUT-PICKING DEVICE 铲指式和圆筒式花生采摘装置的设计与试验

4区农林科学

Engenharia Agricola Pub Date : 2023-01-01 DOI: 10.1590/1809-4430-eng.agric.v43n3e20220174/2023

Tao Xu, Zhixia Liu, Lianxing Gao, Zhanwei Dong, Weizhou Chen

{"title":"DESIGN AND EXPERIMENTS FOR SHOVEL-FINGER AND CYLINDER PEANUT-PICKING DEVICE","authors":"Tao Xu, Zhixia Liu, Lianxing Gao, Zhanwei Dong, Weizhou Chen","doi":"10.1590/1809-4430-eng.agric.v43n3e20220174/2023","DOIUrl":"https://doi.org/10.1590/1809-4430-eng.agric.v43n3e20220174/2023","url":null,"abstract":"Two-stage harvesting is the main method for performing the mechanized harvesting of peanuts, and the picking device is a core part of the combined harvester in China. In order to solve the problem of pod loss caused by the \"stacking\", \"impact\" and \"throwing up\" of peanut plants by a traditional cam-slide spring-finger cylinder picking device, the shovel-finger and cylinder peanut-picking device was developed and used in a picking-up performance test based on the study of peanut-plant strip-picking characteristics. The mathematical model of the mechanism was established by analyzing the structure of the mechanism and the peanut-plant strip-picking characteristics, and the parameters of the mechanism were optimized using the objective function method. The prototype was developed and tested. The experiments in which the prototype was used to collect peanut plants indicated that the phenomenon of peanut plants being stacked and thrown disappeared. Through a response surface analysis and prototype test, the optimal working parameters of the picking device were obtained: the forward speed V was 48.0 m/minute, the rotational speed N was 45.3 r/minute and the ground height H was -18 mm. The peanut-plant picking rate was 98.9% and the fruit loss rate was 2.8% under two different harvesting conditions for which the peanut-plant moisture content was 15~17%.","PeriodicalId":50525,"journal":{"name":"Engenharia Agricola","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135551260","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0