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Abstract

Rice farmers can save labor and expenses by using expanded rice husk (ERH) as a seedling medium since ERH is lighter and cheaper than other commercial seedling media (CSM). This study was carried out to develop a method for rice seedling cultivation using ERH as a seedling medium. It is suggested that a mixture of $60\%$ of ERH and $40\%$ of a CSM could be used as a seedling medium; the planting densities would be 240g per tray for infant seedlings and 200 g for young seedlings; and nitrogen (N) would be applied at a rate of 1g per tray for infant seedlings prior to planting and 2g per tray for young seedlings with division. Great care should be taken to use $CO(NH_2)_2$ as an N-source fertilizer. These results would lay a foundation for the rice seedling cultivation with ERH as a medium.

참고문헌 (11)

  1. KARES. 2000b Experiment and research report. KARES, Chuncheon, Korea. (In Korean) 
  2. Ko, Jonghan. 1998. Bioassay and analysis of allelopathic substances in rice (Oryza sativa L ) husks M. Agr. Thesis, Kangwon National univ (In Korean) 
  3. Yang , W. H., Y D Yun, M T. Song , M. H. Lee, M. S. Lim, and R K Park. 1989. Machine transplanting cultivation with infant seedling in rice plant. Kor. J. Crop Sci. 34(4) . 434-439. (In Korean) 
  4. Nam, M -S., Y -S. Kwon, K.-M. Kim, and J -K. Sohn 2002. Effects of sowing amount on seedling growth and grain yield of automatic seedling raising facility. Kor. J. Crop Sci. 47(6) : 448 -452. (In Korean) 
  5. Kangwon Agricultural Research and Extension Services (KARES). 2000a. Agricultural technology extension material. KARES, Chuncheon, Korea (In Korean) 
  6. Lee, J. H , Y. D. Yun, and H. O. Choi. 1977. Rice seedling establishment for machine transplanting 1. Effect of seed bed soils and soil pH on the physiological disorders of seedlings and their control. Kor J Crop Sci. 22(2) . 27-31. (In Korea) 
  7. Kim, S. -K and P -K. Jung. 1990. Effects of Diatomearth application on the nursery soil pH in the tray and on the growth of rice seedling J. Kor. Soc Soil Sci. Fert. 23(4) : 297-301.(In Korean) 
  8. Lee, E. W. 1997. Lowland rice cultivation. Hyangmoon company, Seoul, Korea. (In Korea) 
  9. Yang, W.-H., J.-H. Kim, J.-K Kim, and M. -H. Lee. 1998. Seedling growth and early growth of transplanted rice as affected by seedling rates and seedling nursery periods. RDA J. Crop Sci. 40(2) : 70-75. (In Korean) 
  10. Kim, S. S., M. G Choi, S. Y Lee, S. Y. Cho, and B. T. Jun. 1996 Nutrient absorption and endosperm consumption m rice seedling. Kor J. Crop Sci. 41(4) . 405-410. (In Korean) 
  11. Rural Development Administration (RDA) 1992. Infant seedling cultivation of machine transplanted rice. Crop Experimental Station, Rural Development Administration, Suwon, Korea. (In Korean) 

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