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| Younesi Alamouti, Mohammad; Sedaghat Hosseini, Morteza. |
| An approach to developing variable-rate sprayer technologies is to install electronic control systems on conventional sprayers. This study introduces a direct injection type electronic solution concentration control system. This control system was installed on a field sprayer, and then a map-based variable-rate sprayer was developed. The control system consisted of a chemical tank, a chemical metering pump, the metering pump’s driver, the metering pump’s speed sensor, the implement’s travelling speed sensor, an Electronic Control Unit (ECU), a GPS receiver and a mixing unit. The metering pump discharge was measured at different carrier liquid (water) working pressures (3, 4 and 5 bar) and different chemical metering pump shaft speed (100, 200, 300 and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Direct -injection system; Variable-rate sprayer; System response time. |
| Ano: 2014 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2948 |
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| Sedaghat Hosseini, Morteza; Mohammadi, Ahmad; Arezou, Mohsen; Koorang Beheshti, Amir Masoud. |
| The objective of this study was to determine the relationship between farm size and energy productivity of wheat production in west Azerbaijan province, Iran. Farmers with different farm sizes (less than two hectares, between two and five hectares and more than five hectares) were randomly selected. Questionnaires were filled by 61 farmers. Then total used energy, produced energy, energy productivity and energy ratio were calculated for each farm. Also the relationship between energy indexes and three methods of tillage and planting (combination machine, seed drill and seed spreader) and three harvesting methods (combine harvester, mower and hand tools) were calculated. The data were analyzed by SPSS software. The results showed that fertilizers... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Farm size; Energy productivity; Used energy; Energy production. |
| Ano: 2014 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2705 |
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