Continuous applications of biochar to rice: Effects on nitrogen uptake and utilization.

ABSTRACT: Improving soil quality is critical for increasing rice yield, and biochar could be a beneficial soil amendment for high yield. This study was conducted to determine the effects of continuous (repeated seasonal) applications of biochar on nitrogen (N) uptake and utilization in rice. A fixed field experiment was done in Yongan Town, Hunan Province, China, in six continuous seasons (the early and late rice-growing seasons from 2015 to 2017). Results showed that biochar application did not significantly affect soil N uptake in the first four seasons. The effect of biochar application on fertilizer N uptake was not significant in three of the first four seasons. In the fifth and sixth seasons, biochar application resulted in 14-26% increases in soil N uptake but 19-26% decreases in fertilizer N

SUBMITTER: Huang M 

PROVIDER: S-EPMC6065394 | biostudies-literature | 2018 Jul

REPOSITORIES: biostudies-literature