Physical properties of two different varieties of horse gram (Paiyur 1 and Paiyur 2) which are highly suitable for rainfed sowing were studied and the observations revealed that the mean data with standard error on physical parameters viz., bulk density, true density, length, breadth, thickness, surface area, geometric diameter, sphericity and 100 seed weight vary within the two varieties as g cm-3 , Kg m-3 , mm, . |