nitrogen-fixing symbiotic bacteria in root nodules

A forum for discussions and questions related to propagating and caring for Australian native plants.

Moderators: Forum_mod, Pam, jack

nitrogen-fixing symbiotic bacteria in root nodules

Postby GoldenWattle » Fri Dec 10, 2010 8:47 pm

I decided to remove a Eutaxia obovata earlier in the week and I noticed some nodules on the roots. I've since discovered this plant is leguminous. The rhizobia bacteria in the nodules take nitrogen gas (N2) out of the air and convert it to a form of nitrogen that's usable to the host plant. I used to think that green manure crops made N available to other plants, but it's purely the breaking down of them (when turned over in the soil) that adds N to the soil. As an aside, I know there is air in the soil, but I'm surprised these nodes wouldn't form above ground where presumably the access to air is greater.

In any event, given that acacias are leguminous too, does that mean these plants don't require fertiliser? Or would it be better to use a low N fertiliser for leguminous natives (since too much N can lead to excessive soft growth which is prone to pest attacks)? I know acacias aren't sensitive to P like the proteaceous natives, but can one kill them with kindness?


GoldenWattle (#)
User avatar
Gardening Sage
Posts: 1100
Joined: Mon Jul 12, 2010 7:40 pm
Location: Melbourne - NE Suburbs

Re: nitrogen-fixing symbiotic bacteria in root nodules

Postby Pam » Sat Dec 11, 2010 5:34 am

GoldenWattle wrote:I given that acacias are leguminous too, does that mean these plants don't require fertiliser?

No, they still require other nutrients. Growing in the wild they get these from composted fallen debris and the various insects etc and fungi that lives amongst it, along with visiting birds etc.

Anything that's not too high in nitrogen would be fine GW.

Cool pic! :D
User avatar
Garden Wizard
Posts: 14418
Joined: Sat Mar 22, 2003 1:06 pm
Location: Bundaberg, Qld

Cheap NFL Jerseys Sale

Postby DennisElumn » Thu Sep 07, 2017 9:17 pm

Don't also overlook that the workshops available through the summit are completely free of charge.If you are looking to perform a history check on a certain individual, Wholesale NFL Jerseys From China, accessing police reports will help you a great deal. A reliable company will take their time to visit your home to do a thorough evaluation of your needs. And Individuals are normally the design of gross saleshuman beings that are really opinionated, they are brash at instances, they are boorishat moments, they are fiercely separate, and they contain a powerful need in the direction of comprisetheir voices listened to. Regular kneading of the crown on a daily basis not merely helps in blood flow but also makes sure that the hair increases healthily. The Comodo antivirus incorporates created the seek the services of of a harmless DNS that may well be brought on within the putting in treatment, and this would make community adjustments crucial for the DNS in direction of reduce Strategies against getting attacked by way of malware towards them web hosting websites. Regardless of the search option one uses for this purpose, the person should make sure to check all qualifications and credentials to vouch for PCB designers.During the summer months, Myrtle Beach plays host to a series of single day golf tournaments that are fun for the entire family.It may make a person feel offended or insulted if they find out that you are checking their history. The records are the same reports that you will get if you request them at the police department and police station. Ask for the references from garage door repair contractor and confirm with every one about their working experiences.Cheap NFL Jerseys Wholesale. The implication is that you have allergies because you dont really have your head screwed on straight.Cheap Jerseys Shop.<br>Visit my site:
Posts: 1
Joined: Mon Jun 26, 2017 11:06 am
Location: Bangladesh

Return to Australian Natives

Who is online

Users browsing this forum: No registered users and 2 guests