Jonghan Ko and Stephan J. Maas. Modification of the GRAMI model for cotton. Agro. Journal. (submitted)

Jonghan Ko, Jin-kwan Ham, Yong-bok Kim, Youn-su Lee, and Byun-woo Lee. Expanded rice husk (ERH) as a rice seedling bed medium – I. chemical and physical characteristics of ERH. Kor. J. Crop Sci. (submitted)

Jonghan Ko, Doo-yeol Kim, Jong-gu Sa, Youn-su Lee, and Byun-woo Lee. Expanded rice husk (ERH) as a rice seedling bed medium – II. Seedling cultivation methods using the ERH contained bed medium. Kor. J. Crop Sci. (submitted)

Jonghan Ko, Byunwoo Lee, and Dong-ha Cho. Comparison of meteorological factors and rice yield components between inland and coastal regions in Kangwon province. Kor. J. Crop Sci. (submitted)

Stephan J. Maas, Sepalika Rajapakse, Robert Lascano, Wenxuan Guo, Jill Booker, and Jonghan Ko. 2005. Relation between RADARSAT imagery and cotton field characteristics. Proc., Beltwide cotton conference, New Orleans, LA. (In press)

Stephan Maas, Robert Lascano, Daniel Cooke, Clarence Richardson, Daniel Upchurch, Donald Wanjura, Daniel Krieg, Susan Mengel, Jonghan Ko, Jerry Brightbill, Kevin Bronson, William Payne, Charles Rush, Sepalika Rajapakse, Wenxuan Guo, and Elizabeth Morris. 2004. Within-season Estimation of Evapotranspiration and Soil Moisture in the High Plains Using YieldTracker. Proc., Conf. on High Plains groundwater resources: challenges and opportunities, Lubbock, TX. CD-ROM

Jonghan Ko, Stephan J. Maas, and Yeong-Sang Jung. 2004. A cotton crop model able to use remotely sensed data. Proc., Kor. J. Env. Agr., Special Ed. 115-125.

Stephan J. Maas and Jonghan Ko. 2004. Canopy architecture model for cotton. Proc., Beltwide cotton conference. San Antonio, Texas. 2039-2142.

Dongha Cho, Chaegon Lee, Jonghan Ko, and Maurice Ku. 2000. Photosynthetic performance of transgenic rice plants over-expressing maize C4 photosynthesis enzymes. Joint meeting of three different scientific societies – The Korean Society of Crop Science, The Korean Society of Agricultural and Forest Meteorology, and The Korean Society of Agro-Informatics. Suweon, Korea. 206-207. (In Korean)

Jonghan Ko, SeokHyun Eom, Myong-jo Kim, Chang-yeon Yu, Youn-su Lee, Hyeon-so Ji, Jin-kwan Ham, Doo-youl Kim, and E-Hun Kim. 1998. Bioassay and analysis of allelopathic substances in rice husks (Oryza sativa L.). Proceedings of Annual Meeting of the Korean Society of Crop Science – Korean J. Crop Science 42(2). Jinju, Korea. 106-107. (In Korean)

 Jonghan Ko, Jin-An Jung, Doo-Youl Kim, Dong-Ha Cho, E-Hun Kim. 1997. Studies of the difference in dry matter production and photosynthetic rate of rice cultivars in the eastern and the western regions of Kangwon province. Proceedings of Annual Meeting of Korean Breeding Society -Korean J. Breeding 30-2. Suweon, Korea. 66-67. (In Korean)

K. S. Kim, J. R. Kim, H. S. Ji, Jonghan Ko, M. A. Lee, D. Y. Kim, Y. B. Shin, and S. U. Park. 1995. Survey of cool weather injury to rice in alpine areas of Kangwon province in 1993, RDA J. Agricultural Sci. 37(2): 74-89. (In Korean)

Kim, K. S., Jonghan Ko, J. G. Sa, J. S. Chang, and D. Y. Kim. 1994. Weed flora changes in lowland rice fields in Kangwon province. Kor. J. Weed Sci. 14(4): 258-264. (In Korean)