Summary
Glasshouse trials indicate the optimum coating for rice seed as 35% (w/w) on seed weight of 60% calcium peroxide. Coatings in excess of this show no improvement and a 20% (w/w) coating gives comparable results to pregerminated seed.
As compared with untreated or pregerminated seeds an optimum seed coating of calcium peroxide increases the number of seedlings emerging through the water layer when rice seed is sown on the soil surface of waterlogged soil or at a depth of 1 cm below the soil surface.
The coating is applicable to a wide range of rice growing temperatures and not influenced by soil type.
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Baker, A.M., Hatton, W. Calcium peroxide as a seed coating material for padi rice. Plant Soil 99, 379–386 (1987). https://doi.org/10.1007/BF02370883
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DOI: https://doi.org/10.1007/BF02370883