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http://dx.doi.org/10.17137/korrae.2018.26.3.63

Characteristics of Nutrient Release of Biochar Pellets through Soil Column during Rice Cultivation  

Shin, JoungDu (Department of Climate Change and Agro-ecology, National Institute of Agricultural Sciences)
Publication Information
Journal of the Korea Organic Resources Recycling Association / v.26, no.3, 2018 , pp. 63-70 More about this Journal
Abstract
This experiment was conducted to investigate nutrient leaching and mobility through soil column for application of biochar pellet during rice cultivation. For nutrient leaching through soil column experiment, it was also consisted with four treatments as control, 100% of pig manure compost pellet (PMCP), biochar pellet (pig manure compost:biochar, 6:4)(BP), and slow release fertilizer (SRF). For experimental results, it was observed that $NH_4-N$ concentration in the leachate was gradually decreased at pick of 35 days and $NO_3-N$ concentration was highest from 60 to 98 days after transplanting. $PO_4-P$ concentration in the leachate was shown to be lowest in the PMCP and BP. K concentration in the leachate was highest in the control, but lowest in SRF. For mobility of nutrient in soil depths, it shown that $NH_4-N$ concentrations were highest from 40 to 60cm and did not significantly different among treatments except the control. It was observed that the deeper depth, the higher concentration for $NH_4-N$ concentrations, but for $PO_4-P$ concentrations the deeper depth, the lower concentration. And also $PO_4-P$ concentration was highest in the control. For K mobility in soil, its pattern was appeared to be approximately same between the control and PMCP, and between BP and SRF. Therefore, it might be potential to be applied biochar pellet to reduce mobility of plant nutrients for rice cultivation.
Keywords
Biochar pellet; mobility; plant nutrients;
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