Back to Search
Start Over
Grain yield, plant nitrogen content and nitrogen use efficiency as affected by controlled-release urea and straw biochar in a rice field.
- Source :
- Journal of Plant Nutrition; 2022, Vol. 45 Issue 9, p1393-1402, 10p
- Publication Year :
- 2022
-
Abstract
- Resulting from the positive effect on rice productivity, the application of biochar and controlled-release urea in the form of polymer-coated urea (PCU) in crop production attracts more and more interest. However, field studies considering the combined effect of biochar and PCU are rare. This 2-year study examined the combined effects of biochar and PCU on yield, yield components, plant height, plant nitrogen concentration and nitrogen recovery efficiency in a waterlogged rice field. Experimental treatments combined two biochar rates (0 and 2800 kg ha<superscript>−1</superscript>) and three nitrogen rates (0, 120 and 180 kg N ha<superscript>−1</superscript>). The results showed a yield decrease under biochar application without nitrogen fertilizer. The application of 120 kg N ha<superscript>−1</superscript> PCU and biochar had the highest yield in 2017. No significant differences of grain yields were indicated between 120 and 180 kg N ha<superscript>−1</superscript>. High grain yield and nitrogen use efficiency was obtained with 120 kg N ha<superscript>−1</superscript> PCU. Therefore, 120 kg N ha<superscript>−1</superscript> PCU can be recommended for rice production in this area. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 01904167
- Volume :
- 45
- Issue :
- 9
- Database :
- Complementary Index
- Journal :
- Journal of Plant Nutrition
- Publication Type :
- Academic Journal
- Accession number :
- 155732647
- Full Text :
- https://doi.org/10.1080/01904167.2021.2014884