Revista Brasileira de Engenharia Agricola e Ambiental最新文献_第8页

No-tillage system participatory quality index 免耕制度参与性质量指标

IF 1.2 4区农林科学

Revista Brasileira de Engenharia Agricola e Ambiental Pub Date : 2020-02-01 DOI: 10.1590/1807-1929/agriambi.v24n2p128-133

T. S. Telles, A. Righetto, Marco A. P. Lourenço, G. M. Barbosa

{"title":"No-tillage system participatory quality index","authors":"T. S. Telles, A. Righetto, Marco A. P. Lourenço, G. M. Barbosa","doi":"10.1590/1807-1929/agriambi.v24n2p128-133","DOIUrl":"https://doi.org/10.1590/1807-1929/agriambi.v24n2p128-133","url":null,"abstract":"ABSTRACT The no-tillage system participatory quality index aims to evaluate the quality and efficiency of soil management under no-tillage systems and consists of a weighted sum of eight indicators: intensity of crop rotation, diversity of crop rotation, persistence of crop residues in the soil surface, frequency of soil tillage, use of agricultural terraces, evaluation of soil conservation, balance of soil fertilization and time of adoption of the no-tillage system. The aim of this study was to assess the extent to which these indicators correlate with the no-tillage system participatory quality index and to characterize the farmers who participated in the research. The data used were provided by ITAIPU Binacional for the indicators of the no-tillage system participatory quality index II. Descriptive analyses were performed, and the Pearson correlation coefficient between the index and each indicator was calculated. To assess the relationship between the indicators and the farmers’ behavior toward the indicators, principal component analysis and cluster analysis were performed. Although all correlations are significant at p-value ≤ 0.05, some correlations are weak, indicating a need for improvement of the index. The principal component analysis identified three principal components, which explained 66% of the variability of the data, and the cluster analysis separated the 121 farmers into five groups. It was verified that the no-tillage system participatory quality index II has some limitations and should therefore be reevaluated to increase its efficiency as an indicator of the quality of the no-tillage system.","PeriodicalId":51288,"journal":{"name":"Revista Brasileira de Engenharia Agricola e Ambiental","volume":"162 1","pages":"128-133"},"PeriodicalIF":1.2,"publicationDate":"2020-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74585441","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: 12

Yield gap in cowpea plants as function of water déficits during reproductive stage 豇豆生殖期水分变化对产量差的影响

IF 1.2 4区农林科学

Revista Brasileira de Engenharia Agricola e Ambiental Pub Date : 2020-01-01 DOI: 10.1590/1807-1929/agriambi.v24n6p372-378

P. Souza, V. Farias, J. Pinto, H. Nunes, E. Souza, C. Fraisse

{"title":"Yield gap in cowpea plants as function of water déficits during reproductive stage","authors":"P. Souza, V. Farias, J. Pinto, H. Nunes, E. Souza, C. Fraisse","doi":"10.1590/1807-1929/agriambi.v24n6p372-378","DOIUrl":"https://doi.org/10.1590/1807-1929/agriambi.v24n6p372-378","url":null,"abstract":"ABSTRACT The cowpea bean presents low productivity in the Pará state, Brazil, due to low soil fertility and climatic adversity, mainly water deficiency. The aim of this study was to evaluate the yield gap of cowpea bean in northeast of Para state in response to water deficit during its reproductive phase. The experiment was carried out in Castanhal, PA, Brazil, during 2015 and 2016. A randomized block design with six repetitions and four treatments was used; where T1 consisted of 100% replacement of the crop evapotranspiration (ETc), T2 to 50%, T3 to 25% and T4 without irrigation, in the reproductive phase. The yield was determined at R9 stage. The simulations with the SARRAZON model were carried out with different sowing dates. The total deficiencies in the reproductive phase were spatialized considering the 30 locations in order to assess the temporal and spatial seasonality of water availability and the sowing period in the study region. The cowpea bean was sensitive to soil water availability with considerable reductions in productivity due to the increase in water deficit compared to the treatment T1 (100% ETc). When water deficits reached more than 47 mm, there were yield gaps over 20%. According to the spatial variability of simulated water deficiency, the sowing of cowpea bean in regions located above 2° latitude may extend until June 20 without showing high yield gaps.","PeriodicalId":51288,"journal":{"name":"Revista Brasileira de Engenharia Agricola e Ambiental","volume":"42 1","pages":"372-378"},"PeriodicalIF":1.2,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88237223","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: 7

CFD simulation on centrifugal pump impeller with splitter blades 带分流叶片的离心泵叶轮CFD模拟

IF 1.2 4区农林科学

Revista Brasileira de Engenharia Agricola e Ambiental Pub Date : 2020-01-01 DOI: 10.1590/1807-1929/agriambi.v24n1p3-7

H. M. P. Rosa, Bruno S. Emerick

引用次数: 8

Nitrogen management in the relationships between oat inflorescence components and productivity 氮素管理对燕麦花序组分与生产力关系的影响

IF 1.2 4区农林科学

Revista Brasileira de Engenharia Agricola e Ambiental Pub Date : 2020-01-01 DOI: 10.1590/1807-1929/agriambi.v24n6p385-393

R. D. Mantai, J. G. D. Silva, M. Binelo, A. Sausen, Denis Sidinei Rossi, Janiele S. Corso

{"title":"Nitrogen management in the relationships between oat inflorescence components and productivity","authors":"R. D. Mantai, J. G. D. Silva, M. Binelo, A. Sausen, Denis Sidinei Rossi, Janiele S. Corso","doi":"10.1590/1807-1929/agriambi.v24n6p385-393","DOIUrl":"https://doi.org/10.1590/1807-1929/agriambi.v24n6p385-393","url":null,"abstract":"ABSTRACT Among oat inflorescence components there are different magnitudes of contribution to expression of grain and industrial productivity by nitrogen stimulation. Thus, it was proposed to size and interpret the contribution and dynamics of the relationships of oat inflorescence components with grain and industrial yield by N-fertilizer stimulation, partitioning correlation values into direct and indirect effects by path diagnosis, strengthened by the joint analysis of different agricultural years. The study was carried out from 2011 to 2016, in the municipality of Augusto Pestana, RS, Brazil, in a randomized block design with four repetitions in a 4 x 2 factorial scheme for nitrogen doses (0, 30, 60 and 120 kg ha-1), using oat cultivars (Barbarasul and Brisasul) in soybean/oat and corn/oat systems. In the soybean/oat system, the mass and the number of panicle spikelets and the mass of panicle grains, contributed more to promoting changes by the increase of nitrogen. In the corn/oat system, the variables with the highest contribution are the mass and the number of panicle spikelets. The increase in panicle grain mass and in panicle harvest index increases grain yield, however, together with the number of panicle grains, they reduce industrial productivity, regardless of the cultivation system.","PeriodicalId":51288,"journal":{"name":"Revista Brasileira de Engenharia Agricola e Ambiental","volume":"45 1","pages":"385-393"},"PeriodicalIF":1.2,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86894236","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

Evapotranspiration of sorghum from the energy balance by METRIC and STSEB 基于METRIC和STSEB的能量平衡分析高粱的蒸散量

IF 1.2 4区农林科学

Revista Brasileira de Engenharia Agricola e Ambiental Pub Date : 2020-01-01 DOI: 10.1590/1807-1929/agriambi.v24n1p24-30

João G. A. Lima, J. M. Sánchez, J. Piqueras, José Espínola Sobrinho, Paula C. Viana, Aline da S. Alves

{"title":"Evapotranspiration of sorghum from the energy balance by METRIC and STSEB","authors":"João G. A. Lima, J. M. Sánchez, J. Piqueras, José Espínola Sobrinho, Paula C. Viana, Aline da S. Alves","doi":"10.1590/1807-1929/agriambi.v24n1p24-30","DOIUrl":"https://doi.org/10.1590/1807-1929/agriambi.v24n1p24-30","url":null,"abstract":"The estimate of the actual surface evapotranspiration (ET) contributes to quantifying the water needs of crops. An alternative to the use of lysimeter for an accurate estimation of water needs, which has proved to be of great value in recent years, is the use of remote sensing combined with models based on surface energy balance. There is wide variety of models that can be classified into two types: one-source models, such as the Mapping EvapoTranspiration at high Resolution with Internalized Calibration (METRIC) algorithm, or two-source models, such as the Simplified Two-Source Energy Balance (STSEB). The objective of this study was to analyze how METRIC and STSEB can be used to estimate ET, in comparison with the lysimeter data, for the different stages of development of the sorghum crop in Apodi, RN, Brazil. The accuracy of both models in the daily ET estimation for the semi-arid conditions of the experiment, with RMSE values of 0.8 and of 0.7 mm d-1 through METRIC and STSEB, respectively, is considered acceptable for irrigation management purposes. The errors obtained with METRIC at an instantaneous scale were 60, 50, 130 and 5 W m-2 for Rn, LE, H and G, respectively, on the other hand, using STSEB these errors were of 40, 70, 120 and 21 W m-2 for Rn, LE, H and G, respectively. The METRIC and STSEB models are very similar when it comes to providing information on water needs of the sorghum.","PeriodicalId":51288,"journal":{"name":"Revista Brasileira de Engenharia Agricola e Ambiental","volume":"94 1","pages":"24-30"},"PeriodicalIF":1.2,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80611873","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: 6

Soil quality in two coffee crop systems in the Amazon biome 亚马逊生物群中两种咖啡作物系统的土壤质量

IF 1.2 4区农林科学

Revista Brasileira de Engenharia Agricola e Ambiental Pub Date : 2020-01-01 DOI: 10.1590/1807-1929/agriambi.v24n6p379-384

N. S. Henrique, K. L. Maltoni, G. A. Faria

{"title":"Soil quality in two coffee crop systems in the Amazon biome","authors":"N. S. Henrique, K. L. Maltoni, G. A. Faria","doi":"10.1590/1807-1929/agriambi.v24n6p379-384","DOIUrl":"https://doi.org/10.1590/1807-1929/agriambi.v24n6p379-384","url":null,"abstract":"ABSTRACT The form of occupation of the state of Rondônia, Brazil, favored the extensive agriculture, which resulted in a fast deforestation. The removal of forests and inadequate soil management and use, combined with a hot and wet climate, affected the soil chemical, physical, and biological attributes. In search for less impacting and alternatives that promote greater soil conservation for coffee production in the North region of Brazil, the objective of this work was to evaluate the effects of two coffee crop systems on the soil chemical and microbiological attributes. The treatments consisted of a shaded coffee crop (SCC) and a full-sun coffee crop (FCC). A completely randomized design was used, with four clusters per treatment and seven sampling points per cluster, which constituted a replication, totaling 28 replications per treatment. The data were collected in April 2018, in a rural property in the municipality of Cacoal, state of Rondônia, Brazil (11º21’50’’S, 61º20’10’’W, and altitude of 238 m). The soil organic matter, pH, P, K, Ca, Mg, Al, H+Al, base saturation, and basal respiration were determined. The soil under SCC had higher Ca content, pH, and base saturation, and lower potential acidity (H+Al) and Al content than that under FCC. The litterfall on the soil under FCC presented higher N and Mg contents. The soil basal respiration increased in the first 5 cm depth in the treatment with SCC.","PeriodicalId":51288,"journal":{"name":"Revista Brasileira de Engenharia Agricola e Ambiental","volume":"29 1","pages":"379-384"},"PeriodicalIF":1.2,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90626817","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: 1

Distribution uniformity in drip units applying dilutions of treated water produced by oil exploration 应用石油勘探生产的处理过的水的稀释剂的滴注装置的分布均匀性

IF 1.2 4区农林科学

Revista Brasileira de Engenharia Agricola e Ambiental Pub Date : 2020-01-01 DOI: 10.1590/1807-1929/agriambi.v24n6p394-401

H. S. M. Vale, D. O. Costa, R. O. Batista, F. A. Oliveira, J. F. Medeiros, D. Coelho

{"title":"Distribution uniformity in drip units applying dilutions of treated water produced by oil exploration","authors":"H. S. M. Vale, D. O. Costa, R. O. Batista, F. A. Oliveira, J. F. Medeiros, D. Coelho","doi":"10.1590/1807-1929/agriambi.v24n6p394-401","DOIUrl":"https://doi.org/10.1590/1807-1929/agriambi.v24n6p394-401","url":null,"abstract":"ABSTRACT The objective of this study was to evaluate the uniformity of distribution in drip units applying dilutions of treated water produced by oil exploration. The experiment was set up in a completely randomized design in a split-split-plot scheme, with three replicates. The plots were composed of the treatments P0 - 100% groundwater, control; P10 - 90% groundwater and 10% produced water; P20 - 80% groundwater and 20% produced water; P30 - 70% groundwater and 30% produced water; and P40 - 60% groundwater and 40% produced water; the subplots had the types of non-pressure compensating drippers (D1 - 1.6 L h-1, Netafim Super Typhoon, D2 - 1.6 L h-1, Netafim Streamline and D3 - 1.7 L h-1, NaanDanJain TalDrip); and the sub-subplots contained the evaluation times (0, 40, 80, 120 and 160 h). Distribution uniformity and statistical uniformity coefficients were evaluated every 40 h, until completing 160 h. The pH of the dilutions was the attribute posing the highest risk of clogging to the emitters. Also in relation to dilutions, P40 caused greater application non-uniformity in D2, while the highest values of application uniformity were achieved in treatments P10 and P20 with D1 and D3, indicating the effectiveness of dilution in minimizing clogging.","PeriodicalId":51288,"journal":{"name":"Revista Brasileira de Engenharia Agricola e Ambiental","volume":"28 1","pages":"394-401"},"PeriodicalIF":1.2,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87778236","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: 3

Nutritional status of coriander under fertigation depths and pulse and continuous drip irrigation 施肥深度、脉冲和连续滴灌条件下香菜的营养状况

IF 1.2 4区农林科学

Revista Brasileira de Engenharia Agricola e Ambiental Pub Date : 2020-01-01 DOI: 10.1590/1807-1929/agriambi.v24n6p364-371

S. M. D. Menezes, G. F. Silva, Valentin Ruben Orcan Zamora, M. M. D. Silva, A. Silva, Ê. F. D. F. Silva

{"title":"Nutritional status of coriander under fertigation depths and pulse and continuous drip irrigation","authors":"S. M. D. Menezes, G. F. Silva, Valentin Ruben Orcan Zamora, M. M. D. Silva, A. Silva, Ê. F. D. F. Silva","doi":"10.1590/1807-1929/agriambi.v24n6p364-371","DOIUrl":"https://doi.org/10.1590/1807-1929/agriambi.v24n6p364-371","url":null,"abstract":"ABSTRACT The objective of this study was to evaluate the nutritional status of coriander cultivar Verdão under fertigation depths and pulse and continuous drip irrigation. The experiment was conducted in a protected environment at the Universidade Federal Rural de Pernambuco, Recife, PE, Brazil (8° 1’ 6.50” S, 34° 56’ 46” W and altitude of 6.5 m), in the randomized block design in 2 x 5 factorial scheme, with three repetitions. Treatments consisted of five irrigation depths (40, 60, 80, 100 and 120% of crop evapotranspiration - ETc) and two types of fertigation application (pulse and continuous). At 27 days after sowing, the aerial part of 48 plants per plot was collected for subsequent quantification of nitrogen, phosphorus, potassium, calcium, magnesium, sulfur, iron, manganese, copper and zinc concentrations. Pulse fertigation combined with ETc replacement depths below 100% promoted higher leaf concentrations of phosphorus, sulfur, iron and manganese. Continuous fertigation combined with 100% ETc depth induced sulfur deficiency in the crop and, combined with 40% ETc depth, promoted the highest calcium concentration. Regardless of the type of application, ETc replacement depths from 82.7 and 40% provide adequate leaf concentrations of nitrogen and magnesium, respectively. Regardless of the applied depth, pulse fertigation reduced the leaf concentrations of magnesium.","PeriodicalId":51288,"journal":{"name":"Revista Brasileira de Engenharia Agricola e Ambiental","volume":"1 1","pages":"364-371"},"PeriodicalIF":1.2,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79556801","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: 2

Effective hydraulic conductivity and its relationship with the other attributes of Cerrado soils 塞拉多土壤有效导水率及其与其他属性的关系

IF 1.2 4区农林科学

Revista Brasileira de Engenharia Agricola e Ambiental Pub Date : 2020-01-01 DOI: 10.1590/1807-1929/agriambi.v24n6p357-363

E. D. Bocuti, R. Amorim, L. A. D. L. D. Raimo, W. A. Magalhães, E. C. D. Azevedo

{"title":"Effective hydraulic conductivity and its relationship with the other attributes of Cerrado soils","authors":"E. D. Bocuti, R. Amorim, L. A. D. L. D. Raimo, W. A. Magalhães, E. C. D. Azevedo","doi":"10.1590/1807-1929/agriambi.v24n6p357-363","DOIUrl":"https://doi.org/10.1590/1807-1929/agriambi.v24n6p357-363","url":null,"abstract":"ABSTRACT The objective of this study was to determine the effective hydraulic conductivity of six areas located in the Cerrado region of Mato Grosso, Brazil, and to identify physical attributes of soils with potential for predicting effective hydraulic conductivity. The tests to determine the effective hydraulic conductivity were carried out in six areas, covering the textural classes sand, sandy loam and clay, and the following uses: pasture, Cerrado and agriculture. Particle size, sand fractionation, total carbon content, degree of clay flocculation, bulk density, macroporosity, microporosity, mean weight diameter, mean geometric diameter and aggregate stability index were determined. From the data, statistical analyses of contrasts were performed by the Kruskal - Wallis test, and simple Pearson’s correlation coefficient was determined between variables. The average values of effective hydraulic conductivity for the pasture, agriculture and Cerrado areas were 95.73, 27.83 and 48.31 mm h-1, respectively. Higher value of effective hydraulic conductivity was observed in the Pasture area point 2 when compared to the Agriculture area point 2, because the amount of clay determined in Agriculture area was approximately 16 times greater than that of the area Pasture point 2, conditioning lower water infiltration in the soil profile of the area Agriculture point 2. Among the physical attributes analyzed, those with the highest potential for Ke prediction were: clay, silt, sand (coarse, medium and fine), total carbon and aggregate stability index.","PeriodicalId":51288,"journal":{"name":"Revista Brasileira de Engenharia Agricola e Ambiental","volume":"11 1","pages":"357-363"},"PeriodicalIF":1.2,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88612925","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: 4

Efficiency of anti-vibration gloves in soil preparation using a micro tractor 微型拖拉机整地防振手套的效能研究

IF 1.2 4区农林科学

Revista Brasileira de Engenharia Agricola e Ambiental Pub Date : 2020-01-01 DOI: 10.1590/1807-1929/agriambi.v24n6p422-427

José Neuman de Souza, L. D. A. Monteiro, V. C. D. Santos, M. Silva, Isabela O. Lima, W. M. Silveira

{"title":"Efficiency of anti-vibration gloves in soil preparation using a micro tractor","authors":"José Neuman de Souza, L. D. A. Monteiro, V. C. D. Santos, M. Silva, Isabela O. Lima, W. M. Silveira","doi":"10.1590/1807-1929/agriambi.v24n6p422-427","DOIUrl":"https://doi.org/10.1590/1807-1929/agriambi.v24n6p422-427","url":null,"abstract":"ABSTRACT During the working day, agricultural machinery operators are often exposed to physical risks, such as vibration, which can compromise their health and performance. Micro tractors emit high levels of vibration, which mainly affect their hands and arms. Thus, this study aims at evaluating the efficiency of different glove models in reducing vibration transmitted by the micro tractor/rotary tiller assembly according to the operating velocity and the rotation of the rotary tiller rotor. A completely randomized block design was used in a 4 x 2 x 2 factorial arrangement with five replicates. The study analyzed three glove models (G1 and G2 anti-vibration models, and anti-impact model G3) and a control treatment under the same operating conditions, but without the use of protective equipment. The study was conducted at two operating velocities (V1 = 0.98 km h-1 and V2 = 1.6 km h-1) and two rotations of the rotary tiller rotor (R1 = 265 rpm and R2 = 520 rpm). None of the evaluated glove models reached the attenuation capacity required by the Occupational Hygiene Standard (Norma de Higiene Ocupacional - NHO 10) and, under some operating conditions, they raised the incident vibration levels, exceeding the values obtained when the work was performed without a protective equipment. Although the anti-impact model G3 and the anti-vibration model G2 did not reduce the transmitted vibration to the levels considered acceptable by NHO 10, the anti-impact G3 and anti-vibration G2 models showed better performance in the work performed at a velocity of 0.98 km h-1 and a rotation of 520 rpm of the rotary tiller rotor.","PeriodicalId":51288,"journal":{"name":"Revista Brasileira de Engenharia Agricola e Ambiental","volume":"62 1","pages":"422-427"},"PeriodicalIF":1.2,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84026619","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: 1