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http://dx.doi.org/10.7745/KJSSF.2016.49.4.388

Fertilizer Use Efficiency of Taro (Colocasia esculenta Schott) and Nutrient Composition of Taro Tuber by NPK Fertilization  

Lee, Ye-Jin (Division of Soil & Fertilizer, National Academy of Agricultural Science)
Sung, Jwa-Kyung (Division of Soil & Fertilizer, National Academy of Agricultural Science)
Lee, Seul-Bi (Division of Soil & Fertilizer, National Academy of Agricultural Science)
Lim, Jung-Eun (Division of Soil & Fertilizer, National Academy of Agricultural Science)
Song, Yo-Sung (Division of Soil & Fertilizer, National Academy of Agricultural Science)
Lee, Deog-Bae (Division of Soil & Fertilizer, National Academy of Agricultural Science)
Publication Information
Korean Journal of Soil Science and Fertilizer / v.49, no.4, 2016 , pp. 388-392 More about this Journal
Abstract
The objectives of fertilizer recommendation are to prevent the application of excessive fertilization and to produce target yields. Also, optimal fertilization is important because crop quality can be influenced by fertilization. In this study, yields and fertilizer use efficiency of Taro (Colocasia esculenta Schott) were evaluated in different level of NPK fertilization. N, P and K fertilizer application rates were 5 levels (0, 50, 100, 150, 200%) by practical fertilization ($N-P_2O_5-K_2O=180-100-150kg\;ha^{-1}$), respectively. In the N treatment, the yields of Taro tuber were about $33Mg\;ha^{-1}$ from 90 to $360kg\;ha^{-1}$ N fertilization. However, the ratio of tuber to total biomass decreased with increasing N fertilization rate. In the P and K treatments, yields of Taro tuber were the highest at $150kg\;ha^{-1}$ fertilization. Fertilizer use efficiency was decreased by increase of N and K fertilization. Crude protein of Taro tuber was the highest at practical fertilization. Sucrose content of tuber was influenced by phosphate application.
Keywords
Fertilization; Fertilizer use efficiency; Nutrient composition; Taro (Colocasia esculenta Schott);
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