National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
Seed metering mechanism is the core functional component of any planter. A new seed metering mechanism was developed for round seeds with the cell design termed 'Anjul' aimed to eliminate seed damage and obtain better seed singulation of seeds while metering. The 3D model of the cell and its housing was prepared in design software-Sketch Up. It composed of two semi-circular split seed metering rollers mounted on a mild steel circular flange and a seed box with feeding chute. The seed metering roller was fabricated from acrylonitrile butadiene styrene polymer with the help of a 3D printer. It was tested in sand bed test for its seed distribution characteristics. The accuracy of seed placement was tested for okra seeds. The cell size of 7 mm which was a optimum match to the seed size of okra, at peripheral speed of seed roller of 1.4 kmh-1was selected for the test. It was found that the most of the time, single seed per hill were obtained with the metering mechanism. The maximum coefficient of variation of seed spacing observed was 15.69%. Missing index and multiple indexes were both zero. There was no visible damage to the seed by the planter. A comparison of X-Ray photographs of metered seeds with normal seeds was done for assessing seed damage. No crack or breakage in the metered seed was.
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