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 Post subject: Plants growing fruit
PostPosted: Dec 28th, '19, 06:56 
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I have set up an IBC aquaponics and have fish and veggies growing great , but no tomatoes , or beetroot fruiting just great leaves etc a friend who is a great soil Gardner reckons it is to high in nitrogen , but my test shows its low if anything , I feel its just to early about 5 weeks , the lettuce I grow was great . should I not listen to the dirt gardener and just continue


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 Post subject: Re: Plants growing fruit
PostPosted: Dec 28th, '19, 19:03 
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your dirt gardener is correct.. nitrogen will just generate leaves.

You will need to add in additional nutrients. The how depends a bit on your system setup.

As you are Aussie then Seasol is the common reference around this site (put Seasol in the search).
If you are down on nitrogen then PowerFeed is OK (green bottle).
If you have nitrogen then normal seasol (white bottle is low on nitrogen).

The next varies with opinions:
(a) my preference is to add direct to the grow bed with a watering can rather than put in fish tank or sump system.
(b) when I have had tomatoes I found that putting some blood and bone with added potash spread into the grow bed around the tomatoes really helps. Just water grow bed with a water can of system water every now and again to keep it mobile around the roots.

This will help bump start a new system - older systems tend to have more organic matter in the grow bed.

Biggest thing is not to put too much in.

The other alternative is to foliar feed but I think the above will work fine.

Beetroot is a root crop.
personally I tend to grow these and other root veg in wicking beds (more successfully) rather than in AP.
but people do grow them in AP - water level is important, and not too wet at the surface.
But with nitrogen dominant you will get leaves and not root development.

With young systems with primarily nitrogen you will get best return from leafy greens - they thrive on nitrogen,
but also like additional nutrients. With flowering/fruiting plants you typically need to supplement.

[edit] - think about adding some pictures of your system. Makes it easier to comment.
instructions here... viewforum.php?f=4

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 Post subject: Re: Plants growing fruit
PostPosted: Dec 29th, '19, 03:23 
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I have low nitrogen so do I add sea sol I will attach photos on next post


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 Post subject: Re: Plants growing fruit
PostPosted: Dec 29th, '19, 03:59 
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Seriously, this cant be healthy.
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dlf_perth wrote:
your dirt gardener is correct.. nitrogen will just generate leaves.

You will need to add in additional nutrients. The how depends a bit on your system setup.

As you are Aussie then Seasol is the common reference around this site (put Seasol in the search).
If you are down on nitrogen then PowerFeed is OK (green bottle).
If you have nitrogen then normal seasol (white bottle is low on nitrogen).

The next varies with opinions:
(a) my preference is to add direct to the grow bed with a watering can rather than put in fish tank or sump system.
(b) when I have had tomatoes I found that putting some blood and bone with added potash spread into the grow bed around the tomatoes really helps. Just water grow bed with a water can of system water every now and again to keep it mobile around the roots.

This will help bump start a new system - older systems tend to have more organic matter in the grow bed.

Biggest thing is not to put too much in.

The other alternative is to foliar feed but I think the above will work fine.

Beetroot is a root crop.
personally I tend to grow these and other root veg in wicking beds (more successfully) rather than in AP.
but people do grow them in AP - water level is important, and not too wet at the surface.
But with nitrogen dominant you will get leaves and not root development.

With young systems with primarily nitrogen you will get best return from leafy greens - they thrive on nitrogen,
but also like additional nutrients. With flowering/fruiting plants you typically need to supplement.

[edit] - think about adding some pictures of your system. Makes it easier to comment.
instructions here... viewforum.php?f=4

I thought power feed was a no no

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 Post subject: Re: Plants growing fruit
PostPosted: Dec 29th, '19, 08:48 
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Beetroot leaves are a great cooked spinach substitute or filler in stirfry. Initially grown for the purpose and left in the ground over winter. Could harvest to apply stress to plant to form root.


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 Post subject: Re: Plants growing fruit
PostPosted: Dec 29th, '19, 18:03 
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austweed wrote:
I have low nitrogen so do I add sea sol I will attach photos on next post

How much is low?

Even if you have high Nitrogen,the plants will still fruit up but they won't do it properly.

Has flowering/fruiting stage started yet?.If it hasn't,nothing's wrong.Probably too early.Some plants start when days are shorter & some on an internal "clock".

I wouldn't add anything until you know for a fact something is needed.

I've seen others on here with 100ppm of NO3 with massive tomatoes.

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 Post subject: Re: Plants growing fruit
PostPosted: Dec 30th, '19, 03:35 
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Thanks all these answers have been helpful my wife is an impatient lady and I tend to think she is just pushing for veggies to soon , but have taken on board all views and will keep you guys posted


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 Post subject: Re: Plants growing fruit
PostPosted: Dec 30th, '19, 08:45 
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@ Food&Fish I thought power feed was a no no

mostly used for cycling, but a **small** amount in grow bed or foliar if low nitrogen
In most cases supplementation is via the normal seasol (white bottle, which has lower nitrogen)

austweed - as per previous is well discussed across the forum - put 'seasol' into search and look for older posts and threads (2016-2018).
Seasol original provides for additional nutrients particularly in a new system.
but don't put in too much - common newbie issue.

also need to provide info on pH, system size etc since these will be factors.



@austweed I have low nitrogen

be careful interpreting that. If you are getting healthy leafy growth than you may have enough nitrates.
You can run a system on <5ppm if everything that is being generated is being used, ideal scenario.

presume you are doing water tests ?

@7341 I've seen others on here with 100ppm of NO3 with massive tomatoes

its got less to do with the nitrates and depends a lot on availability of other nutirents.
A lot of these things are well thrashed out in the older threads,
particularly when the forum was in its better days.

just need to use the search functions. Mr damage has a few recent posts.
also pH of systems can be an issue.

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 Post subject: Re: Plants growing fruit
PostPosted: Dec 30th, '19, 14:36 
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dlf_perth wrote:
@7341 I've seen others on here with 100ppm of NO3 with massive tomatoes
its got less to do with the nitrates and depends a lot on availability of other nutirents.

dlf_perth wrote:
your dirt gardener is correct.. nitrogen will just generate leaves.

His gardener reckons it's to do with Nitrogen.That was the question.Is the Nitrogen too high.He hasn't provided any info on NO3,PH or fish food.

The plants are 5 weeks old,have you ever grown tomatoes?,were they ready that quick?.
Surely if nutrients were unavailable (lacking/lockout) the plants would show it.

dlf_perth wrote:
just need to use the search functions. Mr damage has a few recent posts.

The parameters of other systems will be completely different,You could only get an idea of what's wrong with your own.

dlf_perth wrote:
@austweed I have low nitrogen

be careful interpreting that. If you are getting healthy leafy growth than you may have enough nitrates.
You can run a system on <5ppm if everything that is being generated is being used, ideal scenario.

presume you are doing water tests ?

You can only measure NO3 by excess.

dlf_perth wrote:
A lot of these things are well thrashed out in the older threads,
particularly when the forum was in its better days.

I don't know what you mean by "better days".

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 Post subject: Re: Plants growing fruit
PostPosted: Dec 31st, '19, 06:37 
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dlf_perth wrote:
particularly when the forum was in its better days.

Yes I know what you mean Darren, very slow here now with all the gurus gone.
:(

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