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| Registros recuperados: 11 | |
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| Farrell, Matthew; Ibendahl, Gregory A.. |
| New cotton harvesters have been introduced that have higher performance rate as well as eliminate extra labor and accompanying equipment. The new machines build partial modules on board the harvester. Higher field efficiency (performance rate) lets a farmers harvest his cotton in a shorter period. Precipitation causes cotton losses in both quality and quantity of the cotton. This paper seeks to measure cost per acre when harvest days are stochastic by using historic precipitation data. Cost per acre will include the cost of losses from a loss function from precipitation. Cost per acre will be adjusted for conventional versus new technology by quantifying the losses that contribute to extra costs of extended harvesting. |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Cotton; Harvester; Fieldwork days; Stochastic; Cost per acre; Agribusiness; Farm Management. |
| Ano: 2010 |
URL: http://purl.umn.edu/56507 |
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| Bernache,Leonardo; Tedesco-Oliveira,Danilo; Oliveira,Luan P. de; Corrêa,Ligia N.; Silva,Rouverson P. da. |
| ABSTRACT Sugarcane harvester cutting blade wear increases ratoon damages and losses, impairing sugarcane regrowth. This study aimed to evaluate the quality of basal cut using ratoon damage and loss indexes and correlating them with effects on sugarcane regrowth. Harvest parameters such as plant height and position, damage and loss indexes, and stem length were evaluated every 30 min, following statistical process control (SPC) assumptions. Blade wear was examined during three harvesting shifts (0-8 h, 8-16 h, and 16-24 h). Sugarcane regrowth was assessed by counting number of tillers and measuring plant height and stem diameter. The second harvesting shift showed better quality in terms of damage and loss indexes, and plant height and stem diameter.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mechanized harvesting; Sugarcane; SPC; Harvester. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162020000100053 |
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| Menezes,Patricia C. de; Silva,Rouverson P. da; Carneiro,Franciele M.; Girio,Lucas A. da S.; Oliveira,Mailson F. de; Voltarelli,Murilo A.. |
| ABSTRACT Assuring the quality of mechanical soybean harvesting is crucial to ensure that investment in other stages of crop production is converted into profit for the farmer. Because the quality of this operation is related to decreased losses, which may be affected by the combine header used and by the harvesting speed, the aim of the present study was to assess the quality of mechanical soybean harvesting in the Southern Cone of Rondônia, using harvesters with different combine headers and travel speeds via statistical process control. The experiment was performed during the 2015/16 harvest in an agricultural area of the municipality of Cabixi, RO, located at the geographical coordinates 13° 27’ S and 60° 41’ W. The study was designed based on the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Statistical process control; Harvester; Glycine max; Losses; Combine header. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662018001000732 |
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| Voltarelli,Murilo A.; Paixão,Carla S. S.; Zerbato,Cristiano; Silva,Rouverson P. da; Gazzola,Jonathan. |
| ABSTRACT The quality control is used for the evaluation of processes and products, and it is important to detect and reduce variability and in operations management can be applied in mechanized harvesting of sugarcane billets. In this sense, this study aimed to identify critical quality indicators and, if necessary, to develop a continuous improvement plan for harvest of sugarcane billets. For the survey and definition of critical quality indicators the FMEA (Failure Mode and Effect Analysis) was applied, after the formation of the quality technical team. Evaluations of the collected variables were through control charts of individual values and the process capability indexes. There are 8 critical quality indicators in the billets harvesting process; the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Quality control; Flowchart; Agricultural mechanization; PDCA; Harvester. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162018000100088 |
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| Ghonimy, Mohamed Ibrahim; Ibrahim, Mohamed Mahmoud; Ghaly, Abdelkader; Abd El Rahman, Eid Nasr El-Din. |
| The aim of this research was to evaluate three types of commonly used hand-held olive harvesters in small olive farms (pulsed motion double head olive harvester, hook type hand-held olive harvester and pneumatic comb olive harvester) in the Kingdom of Saudi Arabia. The specific objectives were to (a) determine the values of some olive plant parameters including physical-mechanical properties of fruit-stem system, natural frequency of the olive fruit-stem system and suitable shaking stroke), (b) establish and determine the values of the evaluation criteria which included machine productivity, fruit removal percentage, fruit damage, specific consumed energy and olive harvesting cost, (c) determine the quality characteristic for each criterion, (d) assign the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Olive; Harvester; Natural Frequency; Shaking Stroke; Overall evaluation criterion. |
| Ano: 2021 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/6951 |
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| Andrade,Maria Luiza de Carvalho; Tassinari,Diego; Dias Junior,Moacir de Souza; Martins,Ricardo Previdente; Rocha,Wellington Willian; Souza,Zélio Resende de. |
| ABSTRACT Planted forests occupy more than 6.5 million ha in Brazil, where harvest and logging operations are performed with increasingly heavier machinery, increasing the risk of soil compaction. Soil compaction can be avoided if soil load bearing capacity is not exceeded, what makes it important to assess both the soil strength and the impact of different operations. The aim of this study was to evaluate the load bearing capacity of some coarse textured soils (two Hapludult and one Haplorthod) in two soil horizons (BA and B), from northeastern Brazil; and to assess the impact of harvest and logging operations performed with harvester and forwarder. Although the Haplorthod presented higher load bearing capacity in both the BA horizon (for the whole... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Harvester; Forwarder; Precompression stress; Soil load bearing capacity.. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000200191 |
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| Martins,Paula Cristina Caruana; Dias Junior,Moacir de Souza; Ajayi,Ayodele Ebenezer; Takahashi,Ernesto Norio; Tassinari,Diego. |
| ABSTRACT Traffic of farm machinery during harvest and logging operations has been identified as the main source of soil structure degradation in forestry activity. Soil susceptibility to compaction and the amount of compaction caused by each forest harvest operation differs according to a number of factors (such as soil strength, soil texture, kind of equipment, traffic intensity, among many others), what requires the adequate assessment of soil compaction under different traffic conditions. The objectives of this study were to determine the susceptibility to compaction of five soil classes with different textures under eucalyptus forests based on their load bearing capacity models; and to determine, from these models and the precompression stresses... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Harvester; Forwarder; Feller buncher; Clambunk; Precompression stress.. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542018000100058 |
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| Paixão,Carla S. S.; Voltarelli,Murilo A.; Silva,Rouverson P. da; Borba,Mateus A. de P.; Torres,Luma S.. |
| ABSTRACT The mechanized sugarcane harvesting process is considered one of the major economic bottlenecks, with low operational efficiency and, mainly, high losses of stalks left in the field. In order to minimize these problems and assist in the improvement of processes, this study aimed to evaluate the losses in the mechanized sugarcane harvesting using statistical process control. The experimental design was completely randomized, based on the methodology of statistical process control with samples collected on five work fronts during the daytime and nighttime operation. The experiment was carried out in an agricultural area of a sugarcane mill in the municipality of Ribeirão Preto, SP, Brazil, on five sugarcane harvest fronts. Losses were measured using... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Harvester; Visible losses; Saccharum spp. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162020000400473 |
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| Registros recuperados: 11 | |
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