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| bagherpour, hossein. |
| In countries that agricultural fields are small, most farmers sow pea seed by scattering them by hand, which causes to decrease the yield. Thus, the objective of this study was to investigate the performance of a cylinder-type vacuum precision seeder for sowing pea seed in small fields. The effects of vacuum pressure, speed of grease belt and diameter of seed hole were evaluated by examining the mean seed spacing, quality feed index, coefficient of seed distribution uniformity, and miss and multiple indices. The main variables were vacuum pressure (40, 60 and 80 mbar), grease belt speed (2.5, 5 and 7 km h-1) and seed hole diameter (3, 4 and 5 mm). The results indicated that the maximum performance of the metering device was founded at the vacuum... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Vacuum precision seeder; Miss index; Multiple Index; Performance of the seeder.. |
| Ano: 2019 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/5198 |
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| Bozdoğan,Ali Musa. |
| The performance of three vacuum precision seeders was investigated in a field study. Seeding uniformity was determined in three different within-row distances: 14, 18 and 21 cm. The seeders were operated at 1.8, 3.6, 5.4 and 7.2 km h-1. Successive seed spacing along of 3 m of row was measured in three replications on each row. For evaluating the seeding uniformity of seeders, seed spacings were analyzed using the methods (MISS, MULT, QFI and PREC). There were no differences between seeders. For P < 0.01, operating speed affected MISS and QFI values, and the within-row seed spacing affected MULT and PREC values. The best operating speed was 1.8 km h-1 because of the highest QFI value (88.5%). There was no difference between 1.8 and 3.6 km h-1. The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Miss index; Multiple index; Quality feed index; Within-row. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162008000300013 |
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