I would like to know the diffusion distance of rice root exudates. How far can rice root exudates affect the microorganisms in bulk soil? I do not mean for soil depth, just horizontal distance.
I will be really appreciate for your answers.
https://www.nature.com/articles/s41598-018-30150-0
this has detailed information regarding your query
To my limited knowledge, rice grows in fields with close association. So if you look carefully, one single rice plant root always get entangled with nearby rice plants. depth wise rice root can grow from 5 cm to 20 cm depending on the rice variety. But in hydroponics system roots can grow as much as 1.5 feet. Lateral movement of rice roots always get restricted in field cultivation and it preferes to go downwards, so for this study you can go for a rhizobox or a loose soil pot system.
During the growth of new roots, exudates secreted in the zone of elongation behind the root tips support the growth of primary root colonizers that utilize easily degradable sugars and organic acids. So, the lateral distance of root exudate diffusion might be upto 10 cm horizontally (as this is generally considered to be the most active rhizospheric zone for microbes). But again, in real-time field experiment, this might not be the case and diffusion distance can vary.
https://www.nature.com/articles/s41598-018-30150-0
this has detailed information regarding your query
Arnab Majumdar Thank you for your answer and sharing knowledge, Dr. Arnab Majumdar. I would like to get the reference paper of lateral distance of rice root exudate diffusion if possible. I am going to study with rhizobox. I want to determine the size of rhizobox according to that reference.
Sudershan Mishra Sorry, the paper in your link is not about rice root exuadate diffusion. Anyway, thanks for your reply.
Thank you for your appreciation. Please go through these below mentioned articles. These are good enough to have some ideas about root exudates and microbial relationship. Also the Rhizobox set up details are there-
https://link.springer.com/content/pdf/10.1023/A:1013395122730.pdf
https://academic.oup.com/aob/article/97/5/839/220142
Article The Role of Root Exudatesin Rhizosphere Interactions with Pl...
https://link.springer.com/content/pdf/10.1023%2FA%3A1026290508166.pdf
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