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| Oduma, Okechukwu. |
| Abstract: A research was conducted to examine the effect of soil type and operational speed on the performance of some selected agricultural field machineries in South- East Nigeria. Results revealed that the disc plough had maximum field efficiency of 88.11% at a working speed of 6kmhr-1 in clay-loam soil, while in sandy-clay soil; it recorded maximum field efficiency of 87.98% under the same operational speed (6kmhr-1) and in loamy-sandy soil it obtained maximum field efficiency of 87.55% at the speed of 5kmhr-1. The harrow had maximum field efficiency of 98.54% at operational speed of 9kmhr-1 in sandy-clay soil; in clay-loam soil at a working speed of 8kmhr-1, it recorded maximum field efficiencies of 87.98%, and 87.19% respectively. Results further... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Keywords; Field machineries; Operational speed; Performance; Soil type; South- East Nigeria.. |
| Ano: 2021 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/6111 |
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| Neto,Lauro S.; Kmiecik,Leonardo L.; Jasper,Samir P.; Zimmermann,Gabriel G.; Savi,Daniel. |
| ABSTRACT The hydraulic remote control system allows the transfer of energy from the engine through a flow of hydraulic oil to engines and implements pulled by agricultural tractors, which can interfere with its energy and operational performance. This study aimed to evaluate the interference of the number of remote control valves in use on the operational and energy performance of an agricultural tractor, using a productivity management system. The experiment was conducted in a strip-plot design, with five replications and three treatments, which consisted of the number of remote control valves in use (1, 2, or 3), totaling 15 experimental units. The results were subjected to normality and homogeneity tests and analysis of variance, followed by the Tukey... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Power on the drawbar; Hydraulic system; Operational speed; Specific consumption; Engine thermal efficiency. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162020000300356 |
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