Nitrogen fixing tree associates for gardens

Knotahippie · 18th September 2008, 12:05 PM

I've read about legumes/alders and N fixing root organisms.

Seems like these trees would be good for garden trees, less need for N fert.

Any other plants/suggestions for using less N in the garden/yard?

kiwi_tree_steve · 19th September 2008, 07:23 AM

hey man, now the others will correct me if im wrong, but i think the N is not readily available to other plants, unless the legume is like a Blue lupin, green cut and then turned into the soil. but thats my understanding of it.

Eric Frei · 19th September 2008, 08:37 AM

Check out the link in this post and read some stuff on that site.

Terravent injections

willem · 19th September 2008, 10:33 AM

I thought the species Alnus had the ability of fixing nitrogen.

Knotahippie · 19th September 2008, 12:03 PM

Quote:

Originally Posted by kiwi_tree_steve

hey man, now the others will correct me if im wrong, but i think the N is not readily available to other plants, unless the legume is like a Blue lupin, green cut and then turned into the soil. but thats my understanding of it.

As roots are shed and decay the N becomes available.

Knotahippie · 19th September 2008, 12:14 PM

here's some other N fixing plants-

Betulaceae (Birch): Alnus (Alder)

Cannabaceae: Trema

Casuarinaceae (she-oaks):

Allocasuarina
Casuarina
Gymnostoma
Coriariaceae: Coriaria

Datiscaceae: Datisca

Elaeagnaceae (oleaster):

Elaeagnus (silverberry)
Hippophae (sea-buckthorn)
Shepherdia (buffaloberries)
Myricaceae:

Morella arborea
Myrica
Comptonia
Rhamnaceae (buckthorn):

Ceanothus
Colletia
Discaria
Kentrothamnus
Retanilla
Trevoa
Rosaceae (rose):

Cercocarpus (mountain mahogany)
Chamaebatia (mountain misery)
Purshia (bitterbrush or cliff-rose)
Dryas

Some cool info. on N fixing trees-

Nitrogen Fixing Trees - The Multipurpose Pioneers

caldera · 1st October 2008, 10:57 AM

the best one would be Acacias ~

especially short-lived shrubby ones such as Acacia fimbriata

great tree to plant around Orchards,they grow super fast and down the track you can just chop/slah'em into the surrounding soil... wolllah! nitrogen obsorbed from the atmosphere.

it'd be worth getting soil from native Acacia habitat and spreading around trees... as they nzeed particular micro-rhyzal bacteria (sp?)

LEGUMES!

Eric Frei · 11th November 2008, 09:39 AM

Two of the best and latest organic techniques for Nitrogen fixing bacteria.

Read the sites, on is right here in Australia loaded with PDF's.

From a personal email from Guy Webb of

Nitrogen Fixing Bacteria – TwinN & Easy Rhiz

Quote:

Free living nitrogen fixing endophytes exist that will colonize any terrestrial plant. However they do not usually exist in large enough numbers to compete with other native organisms, or are not wide spread throughout the environment.

However, some clever microbiologists at Mapleton Agri Biotec have discovered a way to concentrate these microbes into a freeze dried vial. We can now
inoculate any plant, all trees included, with N fixing bacteria. Once inoculated into the tree, they live there happily fixing appreciable volumes of N for the season.

I believe it is an absolute breakthrough in N nutrition, and much more earth
friendly than synthetic N.

These microbes, called TwinN, also produce indole acetic acid which is a root growth promoter, so the trees roots are more aggressive and adventurous, and greater nutrient scavenging can occur.

Twin N - What Is It?

18th September 2008, 12:05 PM	#1
Knotahippie Mature tree Join Date: Aug 2008 Location: Bay Area Ca. Posts: 358	Nitrogen fixing tree associates for gardens I've read about legumes/alders and N fixing root organisms. Seems like these trees would be good for garden trees, less need for N fert. Any other plants/suggestions for using less N in the garden/yard?

19th September 2008, 07:23 AM	#2
kiwi_tree_steve Mature tree Join Date: Jun 2008 Location: BC. Canada Posts: 325	Re: Nitrogen fixing tree associates for gardens hey man, now the others will correct me if im wrong, but i think the N is not readily available to other plants, unless the legume is like a Blue lupin, green cut and then turned into the soil. but thats my understanding of it. __________________ "You have to feel and touch a tree" Shigo

19th September 2008, 08:37 AM	#3
Eric Frei Admin - Razor sharp and independent 2 X Diploma Level 5 qualified arborist Join Date: Jan 2007 Location: Brisbane Posts: 12,820	Re: Nitrogen fixing tree associates for gardens Check out the link in this post and read some stuff on that site. Terravent injections __________________ Protect your rights to work - Join Australian Tree Association My businesses:- Qualified Brisbane Tree Lopping \| Stump Grinding Brisbane \| Brisbane - Gold Coast Consulting Arborist

19th September 2008, 10:33 AM	#4
willem Semi-mature vigorous tree Join Date: Jun 2008 Location: the netherlands Posts: 188	Re: Nitrogen fixing tree associates for gardens I thought the species Alnus had the ability of fixing nitrogen.

19th September 2008, 12:14 PM	#6
Knotahippie Mature tree Join Date: Aug 2008 Location: Bay Area Ca. Posts: 358	Re: Nitrogen fixing tree associates for gardens here's some other N fixing plants- Betulaceae (Birch): Alnus (Alder) Cannabaceae: Trema Casuarinaceae (she-oaks): Allocasuarina Casuarina Gymnostoma Coriariaceae: Coriaria Datiscaceae: Datisca Elaeagnaceae (oleaster): Elaeagnus (silverberry) Hippophae (sea-buckthorn) Shepherdia (buffaloberries) Myricaceae: Morella arborea Myrica Comptonia Rhamnaceae (buckthorn): Ceanothus Colletia Discaria Kentrothamnus Retanilla Trevoa Rosaceae (rose): Cercocarpus (mountain mahogany) Chamaebatia (mountain misery) Purshia (bitterbrush or cliff-rose) Dryas Some cool info. on N fixing trees- Nitrogen Fixing Trees - The Multipurpose Pioneers

1st October 2008, 10:57 AM	#7
caldera Sappling Join Date: Sep 2008 Location: north qld - australia Posts: 13	Re: Nitrogen fixing tree associates for gardens the best one would be Acacias ~ especially short-lived shrubby ones such as Acacia fimbriata great tree to plant around Orchards,they grow super fast and down the track you can just chop/slah'em into the surrounding soil... wolllah! nitrogen obsorbed from the atmosphere. it'd be worth getting soil from native Acacia habitat and spreading around trees... as they nzeed particular micro-rhyzal bacteria (sp?) LEGUMES!

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