Journal of FARM SCIENCES, Vol 6, No 1 (1993)

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Studies On Physical and Engineering Properties Related to Threshing of Safflower Crop

N.B. Narvani, J.S. Panwar

Abstract


The study revealed that for a particular safflower variety, the sphericity of capitulums was 29 per cent higher than that of seed. The roundness of seed and capitulums varied marginally between 67 and 62 per cent. The average density of seed was 0.85 per cc which was twice that of capitulum. The empirical equation V = 0.38 lbt + 0.00061 predicted the seed volume fairly accurately with an error of 1.23 per cent of the correction factor. The average physical dimensions of the seed ranged from 0.771 to 0.364 cm. The porosity of seed and capsule ranged from 25 to 89 per cent. The angle of repose and coefficient of friction increased with the moisture content and ranged from 25 to 28 degrees and from 0.39 to 0.48, respectively. Wooden surface had the highest coefficient of friction of 0.31 while the galvanised iron had the least at 0.25

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