Rice husk is abundant in many tropical countries, especially in South and Southeast Asia. It can be used as fuel for energy production or be made into biochar. How useful is rice-husk biochar as a soil amendment?
Hi
Its a good initiative. in our university research is going on aspects of biochar treated with human urine is used in crops like ragi, maize as a enriched manure/compost. In future it may become an Agro-based industry in rice growing areas. particularly in India it has been started in small scale.
Thank you
Dear Hue
I have a little experience in this sphere in paddy in old alluvial soil zone of India. I have mixed rice -husk with cow dung and cow urine and kept it moistened providing water for about 15 days in shade. The semi decomposed material was applied mixing it with water,in semi-liquid form in moist paddy fields ( In plots where System of Rice Intensification was followed). Result was significantly better in comparison with the check where only cowdung manure or only chemical fertilizer was used.Production was increased by about 5-12%,panicle length increased,number of effective grains per panicle increased.Even the most probable number of nitrogen-fixing and PSB was also significantly high. I think rice -husk biochar can be used as an enriched manure in the rice growing countries in near future.
with regards.
Hello,
For optimize biochar quality for soil amendment, you may use the method described by the researchers in the attached paper.
Please find the attached file here. Hopefully you got good results. All the best.
With regards.
Biochar is applied as soil amendment to low fertile soils to improve soil physical, chemical and biological characteristics over a period of time and in general it improves soil quality. However, biochar charecteristics depend on temperature to make biochar and additives added such as acid or alkali to increase particular ionic adsorptions.
Dear Nguyen Hue,
Your question is very much relevant to the system and the bio-geographical region. Energy recovery is the simplest way but burning is otherwise harmful. Holistic approach should be considered. In-situ application is a better alternative but could be in modified manner along with amendments. This low carbon matter is good for improving biophysical status of soil and may continue to contribute for a long period. As such conventional agro-technology need more biophysical intervention.
All the best,
B. K. Senapati
Thank you for every one here to answer the question about biochar
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