Rice ratooning is the cultural practice that easily produces secondary rice from the stubble left behind after harvesting the main crop. ‘Daol’ is an extremely early growing rice variety. Planting this variety early allows for an additional ratoon harvest after the primary rice harvest. The plant growth and yield of ratoon rice were very low compared to those of main rice. Protein, amylose content, and head rice rate were higher in ratoon rice than in main rice. The distribution by the rice flour particle size of main and ratoon rice was similar. The damaged starch content in ratoon rice was relatively high at 6.1%. Ratoon rice required a longer time and higher temperature for pasting than main rice. Compared to the original rice, peak viscosity (PV), hot paste viscosity (HPV), cool paste viscosity (CPV), and breakdown (BD) were very low, and setback (SB) was high. As a result of analyzing the gelatinization properties of main and ratoon rice using differential calorimetry, it was found that the onset (To), peak (Tp), and conclusion (Tc) of ratoon rice starch were processed at a lower temperature than those of main rice. The gelatinization enthalpy of both samples was similar. The distribution of amylopectin short chains in ratoon rice was higher than that in main rice.

INTRODUCTION
MATERIAL AND METHOD
    1. Sample preparation and experimental design
    2. Milled rice quality
    3. Starch isolation
    4. Granule size distribution and damaged starchcontents
    5. Gelatinization properties
    6. Amylopectin branch-chain-length distribution
RESULT AND DISCUSSION
    1. Yield and growth
    2. Milled rice quality
    3. Granule size distribution and damaged starchcontents
    4. Gelatinization properties of grains
    5. Amylopectin branch-chain-length distribution
CONCLUSION
적 요
REFERENCES

• Jong-Hee Shin(Division of Crop Research, Gyeongsangbuk-do Provincial Agricultural Research and Extension Services, Daegu 41404, Korea) | 신종희 (경상북도농업기술원 작물연구과) Corresponding author
• Chae-Min Han(Division of Crop Research, Gyeongsangbuk-do Provincial Agricultural Research and Extension Services, Daegu 41404, Korea) | 한채민 (경상북도농업기술원 작물연구과)
• Young-Un Song(Division of Crop Research, Gyeongsangbuk-do Provincial Agricultural Research and Extension Services, Daegu 41404, Korea) | 송영운 (경상북도농업기술원 작물연구과)
• Sang-Kuk Kim(Division of Crop Research, Gyeongsangbuk-do Provincial Agricultural Research and Extension Services, Daegu 41404, Korea) | 김상국 (경상북도농업기술원 작물연구과)
• Jung-Gi Ryu(Division of Crop Research, Gyeongsangbuk-do Provincial Agricultural Research and Extension Services, Daegu 41404, Korea) | 류정기 (경상북도농업기술원 작물연구과)