1. Institute Agricultural Science & Technology, Kyungpook National University, Daegu 702-701, Republic of Korea
2. Kyungpook Water-melon Industry-University-Institute Cooperation Agency, Daegu 702-708, Republic of Korea
3. Department of Agricultural Civil Engineering, Kyungpook National University, Daegu 702-701, Republic of Korea
4. Department of Bio Industrial Machinery Engineering, Pusan National University, Miryang 627-706, Republic of Korea