Physical Properties of Hungarian and Common Vetch Seeds

The physical properties of Hungarian and common vetch seeds were determined at moisture content of 11.57 and 10.3% d.b., respectively. The mean values of length, width, thickness and geometric mean diameter were 4.27, 4.03, 3.38, 3.86 mm, respectively for Hungarian vetch seed and were 5.11, 4.49, 3.83, 4.44 mm, respectively for common vetch seed. One hundred seed weights of Hungarian and common vetch seed were 4.33 and 5.88 g, respectively. The mean sphericity value was obtained as 0.91 for Hungarian vetch seed and as 0.87 for common vetch seed. The mean bulk and true densities were 772.17, 1205.81 kg m-3, respectively for Hungarian vetch seed and were 785.9, 1091.19 kg m-3, respectively for common vetch seed. The angles of repose of Hungarian and common vetch seed were 13.64 ° and 12.95 ° , respectively. The values of coefficient of dynamic friction against hard-wood sheet, galvanized steel, mild steel, chipboard and rubber surfaces were 0.29, 0.30, 0.33, 0.33, 0.41, respectively for Hungarian vetch seed and were 0.27, 0.27, 0.31, 0.31, 0.45, respectively for common vetch seed; while the values of coefficient of static friction were 0.35, 0.36, 0.39, 0.43 and 0.45, respectively for Hungarian vetch seed and were 0.32, 0.34, 0.39, 0.45, 0.48, respectively for common vetch seed.