Author(s):

Dr. M Manoharan

Abstract: The desired plant population and uniform plant spacing could be achieved by precision sowing technique. The levels of variables <em>viz</em>., 0.20 ms^-1 peripheral velocity, 45° inclination of seed metering disc and cell geometry having 10 per cent more than maximum seed dimension were optimized using an experimental test rig under laboratory condition. A tractor drawn prototype five row inclined plate pulse planter was developed and evaluated in rectangular soil bin. There was no much variation in spacing between hills of individual rows of prototype pulse planter. The average standard deviation and coefficient of variation for five rows were 0.004 and 0.044 respectively which was well within the acceptable accuracy (20 %) achieved by mechanical and pneumatic machines when they are performing well as reported by Griepentrog (1998) ^[6].

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