Physical Properties of Hungarian and Common Vetch Seeds

Abstract

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 , respectively for 3 Hungarian vetch seed and were 785.9, 1091.19 kg m , respectively for common vetch seed. The angles of 3 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. Physical properties of Hungarian and common vetch were cleaned with air effect and manually to remove all seeds are to be known; for design and improve of relevant foreign matter, broken and immature seeds. The moisture machines and facilities for handling, storing, harvesting content of the samples was determined by oven drying and processing. The size and shape are important in at 105+1°C for 24 h . Each of the samples was designing of separating, sizing and granding machines. replicated three times and the mean moisture content of Bulk density and porosity affect the structural loads, Hungarian and common vetch seed was found as resistance to airflow of the stored mass and are important 11.57 and 10.3% (d.b.), respectively. parameters in designing of drying and storing systems. To determine the seed size; one hundred seeds were The angle of repose is important in designing of storage randomly selected and length, width, thickness were and transporting structures. The coefficient of friction of measured using a dial-micrometer with a reading accuracy seed against the various surfaces is also necessary in of 0.01 mm. The geometric mean diameter (Dg) and structures.