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Registros recuperados: 11
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Cost/Benefit of Abscission Registration for Citrus Mechanical Harvesting AgEcon
Blanco, German; Roka, Fritz M..
The Florida Department of Citrus (DOC) is spending public funds to register an abscission agent compound (CMNP) with the U.S. EPA as part of its effort to enhance the private benefits associated with citrus mechanical harvesting. An abscission agent application should allow existing harvesting equipment to operate through the entire late season orange harvesting period. When estimating costs and benefits through 2018, the net present value of mechanically harvesting 25,000 acres is between $60.8 and $79.9 million, depending on price, production, and fruit loss scenarios. For any of the scenarios considered, the discounted value of abscission benefits with mechanical harvesting fully pays for the costs of registration and development within four years.
Tipo: Conference Paper or Presentation Palavras-chave: Abscission; Citrus; Mechanical harvesting; Cost benefit analysis; Agricultural Finance; Q14.
Ano: 2009 URL: http://purl.umn.edu/46753
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DISPOSITIVO colhedor de grãos aperfeiçoado. Infoteca-e
RESUMO: Dispositivo simples e barato, para colheita de grãos. Substitui quase todos os mecanismos de uma colhedora convencional. DESCRIÇÃO TÉCNICA: Trata-se de um dispositivo para colheita de grãos, especialmente de soja, que funciona por impacto com fios flexíveis. A ação conjunta de jatos de ar e dos impactos produzidos por fios flexíveis sobre vagens, cachos ou espigas, libera, limpa e transporta os grãos para um reservatório ou para o duto de saída. Mais eficiente que os equipamentos disponíveis no mercado, ele pode ser ajustado a qualquer processo de colheita. SUMMARY: Simple, low-cost grain harvesting device that substitutes almost all the mechanisms in a conventional harvester. TECHNICAL DESCRIPTION: The object of the invention is a grain harvest...
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E) Palavras-chave: Grãos.; Máquina agrícola; Soja; Colheita; Colheita mecânica; Colheitadeira.; Mechanical harvesting; Soybeans.
Ano: 2002 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/462983
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Farmer’s evaluation of a rolling canvas prototype against his own system for harvesting olives IPB - Escola Superior Agrária
Almeida, Arlindo; Peça, José; Pinheiro, Anacleto; Dias, António; Santos, Luís S.S. dos; Lopes, João; Gomes, José.
An olive grower was invited to organise a full day harvesting test based on two rolling canvas prototypes, using his own trunk shaker, tractors and labour. This paper reports the results observed, making also a comparison with the usual harvesting method followed by the farmer, based on a trunk shaker and canvas manually placed under the trees. Results show that the rolling canvas based system has got a slightly higher work rate, and according to the workers, is less demanding in terms of physical effort.
Tipo: Article Palavras-chave: Olives; Mechanical harvesting; ±400 trees/ha.
Ano: 2008 URL: http://hdl.handle.net/10198/4299
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Farmer’s evaluation of a rolling canvas prototype against his own system for harvesting olives IPB - Escola Superior Agrária
Almeida, Arlindo; Peça, José; Pinheiro, Anacleto; Dias, António; Santos, Luís S.S. dos; Lopes, João; Gomes, José; Reynolds, Domingos.
Tipo: ConferenceObject Palavras-chave: Mechanical harvesting; Olives; 400 trees per hectare.
Ano: 2004 URL: http://hdl.handle.net/10198/5498
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Mechanical harvesting of 400 trees per hectare olive orchards based on a rolling canvas prototype IPB - Escola Superior Agrária
Peça, José; Almeida, Arlindo; Pinheiro, Anacleto; Dias, António; Santos, Luís S.S. dos; Lopes, João; Gomes, José; Reynolds, Domingos.
Towards higher densities of trees per hectare different alternatives are required 10 collect olives harvested by trunk shakers. This paper puts forward a revised concept of the trailed can with a rolling canvas system. The equipment consists of a 6m lung box welded 10 a wheeled chassis with a rolling canvas system placed over its full length.
Tipo: ConferenceObject Palavras-chave: Mechanical harvesting; 400 trees per hectare.
Ano: 2004 URL: http://hdl.handle.net/10198/5497
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Mechanical harvesting of 400 trees per hectare olive orchards based on a rolling canvas prototype IPB - Escola Superior Agrária
Peça, José; Almeida, Arlindo; Pinheiro, Anacleto; Dias, António; Santos, Luís S.S. dos; Lopes, João; Reynolds, Domingos.
As the world's olive industries move towards higher densities of trees per hectare, different alternatives are required to collect olives harvested by trunk shakers. This paper puts forward a revised concept of the traingli cart with a rolling canvas system. The equipment consists on a 6 m long box welded to a wheeled chassis, with a rolling canvas system placed over its full length. Olives are stored until the box is full, and then discharged through the back by a conveyor belt placed at the bottom of the box. Steering axle and low pressure tires increase performance. All components are hydraulic powered from the pulling tractor. Real scale tests were carried out in two 400 trees per hectare olive orchards:(a)a trunk shaker, and one trailed cart...
Tipo: Article Palavras-chave: Olives; Mechanical harvesting; +/- 400 trees per hectare.
Ano: 2008 URL: http://hdl.handle.net/10198/4300
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Modeling of operational performance parameters applied in mechanized harvest of coffee AGRIAMBI
Cunha,João P. B.; Silva,Fabio M. da; Andrade,Ednilton T. de; Carvalho,Luis C. C..
ABSTRACT In super-mechanized coffee harvesting system, all operations are performed mechanically. In order to improve the logistics of mechanized agricultural operations, the knowledge on the variables that affect the operational performance can generate models to accurately estimate these parameters. The use of response surface methodology (RSM) allows to verify the influence of different independent variables and the generated response to allow for a great value. This study aimed to verify, using RSM, the influence of speed, mean length of rows and the slope of the areas on the operational performance parameters in different mechanized operations in coffee production, such as: harvest, sweeping and gathering. The results show that the slope directly...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Mechanization; Slope; Mean error; Mechanical harvesting.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016001000946
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“Oli-Picker” a solution to detach olives from large trees? IPB - Escola Superior Agrária
Almeida, Arlindo.
The “Oli-picker” harvester operates brushing the tree canopy inside or around the olive tree crown. The advantage of the “Oli-picker” relative to trunk shakers can be found in large trees common in old traditional orchards. In such trees trunk shakers are not efficient or simply impossible to use due to trunk diameter. This paper aids up the work rates results and makes an attempt to present harvesting costs in olive orchards with trees unsuitable for trunk shaking.
Tipo: ConferenceObject Palavras-chave: Olives; Mechanical harvesting; Spike rotor.
Ano: 2009 URL: http://hdl.handle.net/10198/4323
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Performance of three mechanical harvesting systems for olives in Portugal IPB - Escola Superior Agrária
Almeida, Arlindo; Peça, José; Pinheiro, Anacleto; Dias, António; Santos, Luís S.S. dos; Reynolds, Domingos; Lopes, João.
Three mechanical harvesting systems for olives have been tested in field trials in the two main Portuguese regions of olive production: Trás-os-Montes and Alentejo. These tests took place in traditional olive orchards with 100 to 150 trees per hectare. In the three systems, olives were harvested with the same trunk shaker and were collected manually (system I); with a tractor mounted rolling canvas (system II); with an inverted umbrella (system III). Results are revealed in terms of working rates. The main factors that influence the systems performance are discussed.
Tipo: ConferenceObject Palavras-chave: Olives; Mechanical harvesting; Performance.
Ano: 2007 URL: http://hdl.handle.net/10198/4220
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Potato harvester performance on tuber damage at the eastern of Saudi Arabia CIGR Journal
Al-Dosary, Naji Mordi Naji.
In this study, a potato harvesting machine performance by studying the effect of the potato harvester operating variables on tuber damage was investigated.  All field experiments were conducted at the premises of the National Agricultural Development Company (NADEC) located east of the city of Riyadh, in sandy loam soil by using long oval tubers in shape specifications (Hermes), along with one type of potato harvester (i.e., two-row potato harvester with two riddle chains).  Therefore, three operating variables pertaining to the potato harvester were utilized: potato harvester forward speed (chain speed) at 1.5 km/h (with the primary chain speed of 2.8 and the secondary chain speed of 1.8 km/h), 1.7 km/h (primary and secondary chain speed of 3.4 and 2.2...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Hermes potatoes; Mechanical harvesting; Tuber damage; Lifted tubers; Potato damage index.
Ano: 2016 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3401
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SHIFTS AND HARVESTING SYSTEMS ON QUALITY OF IMPURITIES SAMPLES IN SUGARCANE REA
Alcantara,Aline S.; Ormond,Antonio T. S.; Sousa Júnior,Paulo R. de; Silva,Rouverson P. da; Kazama,Elizabeth H..
ABSTRACT Semi-mechanical and mechanical harvesting methods may influence the content of impurities in harvested sugarcane. This study aimed to evaluate the quality of three mechanical methods of sugarcane harvesting: one semi-mechanical, and two mechanical ones - self-performed and outsourced, during three working shifts. As quality indicators, both mineral and vegetal impurities were accounted. About 50 random samples were collected in the studied area during 35 harvest days and in three working shifts, for each harvesting method. Mineral impurities showed similar behavior for both self-performed and outsourced mechanical harvesting, thus displaying a low variability. On the other hand, vegetal impurities showed to be unstable for all three shifts....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Mechanical harvesting; Agricultural machinery; Statistical process control; Saccharum officinarum.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162017000300510
Registros recuperados: 11
Primeira ... 1 ... Última
 

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