Rapeseed damage as influenced by the dynamic load
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Institute of Agrophysics, Polish Academy of Sciences, Doświadczalna 4, 20-236 Lublin, P .O. Box 121, Poland
Agricultural Engineering Department, Hohenheim University 7000 Stuttgart 70, Germany
Publication date: 2020-09-23
Int. Agrophys. 1992, 6(1-2): 103–115
tudies were conducted on the resistance of individual rapeseeds to dynamic loading. The material consisted of three German varieties (Akela, Arabella, Emerald) and three varieties grown in Poland (Beryl, Jantar, Jupiter). Factors such as: two seed size fractions (1.6-2.0 and 2.1-2.5 mm); differentiated moisture content (4, 6, 9, 12, 15, 18, 21 %); and differentiated tangential velocity of the striker (4, 6, 8, 10, 12, 14 m/s) were used for determining the variability of seed resistance properties. The effects of dynamic forces were compared with the control. Macroand micro-damage were evaluated for all the 756 combinations in the experiment (each combination consisted of 100 individual seeds). The statistically elaborated results showed that moisture content and the tangential velocity of the element striking the seeds • exerted the greatest influence on the type and size of seed damage. The relations observed in the experiment were described by means of an exponential function. A very good agreement between the experimental results and the results of approximation was obtained.