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http://dx.doi.org/10.3839/jabc.2022.001

Reduced use of nitrogen fertilizer through retarded hydrolysis of urea by pyroligneous acid for Chinese cabbage cultivation  

Lee, Joo-Kyung (Department of Agricultural Chemistry, Chungbuk National University)
Park, Hyun Jun (Soil Research Institute, Prumbio Co. Ltd)
Park, Jin Hee (Department of Agricultural Chemistry, Chungbuk National University)
Publication Information
Journal of Applied Biological Chemistry / v.65, no.1, 2022 , pp. 1-6 More about this Journal
Abstract
Urea is one of the most common nitrogen fertilizer, but nitrogen use efficiency by crop is low because of rapid hydrolysis of urea and loss of nitrogen in environments. Therefore, it is important to control the nitrogen release from nitrogen fertilizers. In this study, pyroligneous acid (PA) was used as a mean to inhibit urease in soil and prevent excessive nitrogen release from urea. Active ingredient in PA (AI) inhibited ammonification of urea in soil by reducing extracted ammonium nitrogen at 79.7% compared to the soil without PA. In order to evaluate the effect of PA on fertilization efficiency of urea, Chinese cabbage (Brassica campestris var. Pekinensis) was cultivated in soil treated with urea and PA both in pot and field. For PA treatment, half amount of urea was used compared to the amount of urea conventionally applied to Chinese cabbage. The PA treatment with half amount of urea resulted in similar Chinese cabbage biomass to the conventional urea application. Nitrogen concentration in Chinese cabbage was less in PA treatment indicating that Chinse cabbage effectively used nitrogen. Consequently, fertilization of urea with PA will reduce amount of fertilizer and frequency of application.
Keywords
Fertilization; Growth; Inhibitory effect; Plant; Soil;
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Times Cited By KSCI : 1  (Citation Analysis)
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