Effects of Customized Fertilizer Application on Growth and Yield of Rice
2011
Lee, J.S., National Academy of Agricultural Science, RDA, Suwon, Republic of Korea | Song, Y.S., National Academy of Agricultural Science, RDA, Suwon, Republic of Korea | Lee, Y.J., National Academy of Agricultural Science, RDA, Suwon, Republic of Korea | Yun, H.B., National Academy of Agricultural Science, RDA, Suwon, Republic of Korea | Jang, B.C., National Academy of Agricultural Science, RDA, Suwon, Republic of Korea | Kim, R.Y., National Academy of Agricultural Science, RDA, Suwon, Republic of Korea
The importance of environment-friendly agriculture is being magnified as a new growth engine industry in pursuit of low carbon, green growth policies. In order to provide technical supports for pushing ahead with the environment-friendly agriculture policies, we estimated the effects of customized fertilization on growth and yield of rice and fertilizer reduction compared to conventional fertilization and single-element fertilization. In rice plant growth and rice yield, no statistically significant difference between the three fertilization treatments was observed. In contrast, customized fertilization showed high disaster resistance reducing the damage caused by rice lodging during a typhoon. The average N application in farms showing high rice lodging amounted to 135 kg N ha-¹ while 135-138 kg N ha-¹ was known as the critical range of rice lodging in Korea. The fertilizer reduction rate of customized fertilization compared to conventional fertilization of investigated farms was on average 22.5%. We estimated the short-term effects of customized fertilization in the first year after application. In future, there is need for continuous examination of rice growth and soil environment change due to successive application of customized fertilizer.
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