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2020 Vol.65, Issue 1 Preview Page

Original Research Article

Methods of Application and Beneficial Effects of Silicate-Coating Rice Seeds

볍씨의 규산코팅방법에 따른 이용특성과 육묘효과

Yang-Soon Kang1*
,
Wan Joong Kim2
,
Duck Sang Hwang3
,
Hee Kyu Kim4
강 양순1*
,
김 완중2
,
황 덕상3
,
김 희규4
1Chief, R & D Center, Saturn Bio Tec Co., Ltd., Hoengsoeng 25209, Republic of Korea
2Technical Director, R & D Center, Saturn Bio Tec Co., Ltd., Hoengsoeng 25209, Republic of Korea
3Production Manager, R & D Center, Saturn Bio Tec Co., Ltd., Hoengsoeng 25209, Republic of Korea
4Emeritus Professor, Department of Plant Medicine, Gyeongsang National University, Chinju 52858, Republic of Korea
1새턴바이오텍(주) 기업부설 작물수용성규산연구소 연구소장
2새턴바이오텍(주) 기업부설 작물수용성규산연구소 기술이사
3새턴바이오텍(주) 기업부설 작물수용성규산연구소 생산차장
4경상대학교 식물의학과 명예교수
*Corresponding Author
1 March 2020. pp. 30-39
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Abstract

A new silicate coating technology was developed which reduces the impact of dust and loosening during seeding compared to existing silicate-coatings (Seed/Si/Zeolite), and therefore can lower the production costs of rice cultivation. In this method, 100 g of rice seed is coated with 18 mL of liquid silicic acid and then dressed with a mixture containing 80 g of dolomite and 5 g of iron. To determine the most effective method of application and ensure that seedlings developed healthily, a series of experiments were carried out. Infected seeds scattered in seedling boxes and pots (soil and hydroponic) were coated dry, without disinfection. In comparison to the seed which were not treated with the silicate-coating, the new seed (A) were 1.84 times heavier in weight, and were also improved in terms of coating strength and coating color. Compared to the seedlings grown from the non-coated seed, those grown from the new silicate-coated seed were of significantly higher quality (weight/length) and had erect, dark greenish leaves, which are ideal plant characteristics. This was most likely due to increased silicate uptake. The symptoms of bakanae disease in the non-coated seed peaked after 38 days to 54.2%, whereas the control value was 68.8% in the new silicate-coated seed (A). In the infected seedlings grown from the new silicate-coated rice seed, subnormal macro-conidia, namely, a sickle shape spore without a septum; a straight oblong shape spore without a septum and with a thick cell wall; and inter-septal necrosis of a normal spore were detected. It is believed that the strong alkalinity of silicic acid have acted as unfavorable conditions for pathogenicity. In seedlings grown from the new silicate coated rice seed under hydroponic conditions without nutrients, normal root activity and growth was maintained without leaf senescence. Therefore, it was possible to reduce the rate of fertilization. In the future, a new silicate-coated rice seed was required for the study of minimal nutrition for anti-aging of seedlings.

Keywords
bakanae disease
leaf senescence
seedling quality
silicate-coated rice seed
silicified cell
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Information
  • Publisher :The Korean Society of Crop Science
  • Publisher(Ko) :한국작물학회
  • Journal Title :The Korean Journal of Crop Science
  • Journal Title(Ko) :한국작물학회지
  • Volume : 65
  • No :1
  • Pages :30-39
  • Received Date : 2019-11-18
  • Revised Date : 2019-12-21
  • Accepted Date : 2020-01-18
  • DOI :https://doi.org/10.7740/kjcs.2020.65.1.030
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