The Effects of Hilum Position of the Seed of the Black Seed Coat Soybean Variety Tanbaguro on Days to Emergence and Emergence Ratio in Cell Tray Raising

Abstract

This study was aimed at investigating the effects of hilum position of the seed at sowing on days to emergence and emergence ratio in cell tray raising using the black seed coat soybean variety Tanbaguro. Seeds were sown with hilum on the side or hilum facing downward, giving the first water irrigation at 24 hours after sowing. In both the seeds with hilum on the side or facing downward all cotyledons emerged from 3 to 7 days after sowing. The mean value of emergence ratio was 98.4% in the former and 96.1% in the latter; the difference between the two sowing directions being statistically significant. These data demonstrate that the sowing the seed with hilum on the side is a useful method to obtain a high seedling emergence ratio in cell tray raising of Tanbaguro.