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 Post subject: Tomato Plants issue
PostPosted: Mar 8th, '16, 00:17 
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Hi there,

I live in Malaysia and have been running my tilapia aquaponic system for about 2 years now.

I have 2 tomato plants ( Sun sugar) planted 3 months back and it has been fruiting and ripping.

Recently noticed all the new growth and flowers looks different and stunted. Would think it is due to
Phosporus issue. I added more Phosporus to it ( liquid) but dont see any recovery.

Anyone has any ideas?

Will try to provide pics soon as having problem uploading the pic


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 Post subject: Re: Tomato Plants issue
PostPosted: Mar 8th, '16, 01:27 
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teha123,

See this tutorial for help on posting pictures on the forum.

A quick tutorial on adding images to posts

Upload some pictures and I'll bet you get plenty of help! :thumbright:

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 Post subject: Re: Tomato Plants issue
PostPosted: Mar 9th, '16, 00:12 
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Thanks nosliwis!!

Here are the pics:

Image

Image

Image



These 2 plants 1 is producing alot of fruits but then another 1 producing lesser fruits.


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 Post subject: Re: Tomato Plants issue
PostPosted: Mar 9th, '16, 02:47 
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How about another pic showing more of the plants. You've got what looks like a deficiency going on but I'm not sure what regions of the plant were affected first (old or new growth). While I'm at it, what color are the leaf undersides - especially on the lower portions of the plant?


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 Post subject: Re: Tomato Plants issue
PostPosted: Mar 9th, '16, 07:38 
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Hi Scotty,

All the new growth is showing symptoms as in the pic.

Under leaves i do see some with purple color so suspect it is phosporus. However not all shows purple.
One part even show like yellowing as well as edge of the leaves browning.


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 Post subject: Re: Tomato Plants issue
PostPosted: Mar 9th, '16, 09:55 
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It's a simple solution, but after adding iron, and if there is still an issue, I'll add seasol. It contains most of the macro-micro nutrients the systems aren't getting. I'm not sure what the equivalent locally is for you. It's a seaweed extract.

So instead of trying to find all the individual things lacking, I just add the seasol to fix it all up.

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 Post subject: Re: Tomato Plants issue
PostPosted: Mar 9th, '16, 11:01 
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The new growth yellowing is probably iron. It's tough to say on the phosphorus, some tomato plants have a bit of purple on the undersides anyway. The stunting is a bit indicative of a phosphorus deficiency. Colum's approach might do the trick but another option is to try and supply enough of all the nutrients that the plant can pickup whatever it needs.

Using Blood and bone has worked for some of us although where BSE has been a problem (Great Britain for example) I would go a different route. Blood and Bone is often included in fish feed so you likely are already adding it to your system in this form. If you want to find something else the idea is to have slow release nitrogen that won't harm the fish along with other ingredients to give the plants whatever they are missing.


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 Post subject: Re: Tomato Plants issue
PostPosted: Mar 9th, '16, 13:46 
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Hi,

I actually did supplement some iron although i dont think its iron as only these few are showing sign of yellowing.

Also i am using Kelp extract for Potassium so guess it contains the micro nutrient required.

Would like to know often how long does it takes for the plant to recover from Phosphorus problem?
Would the stunted parts grow if Phosphorus was provided?


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 Post subject: Re: Tomato Plants issue
PostPosted: Mar 9th, '16, 17:13 
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teha123 wrote:
Would like to know often how long does it takes for the plant to recover from Phosphorus problem?
Would the stunted parts grow if Phosphorus was provided?


I don't know the answer to this but I think it may depend on how severe the shortage is and how long it's been going on. The other thing to consider though is whether the phosphorus you added is actually available or is it bound up in some other form that the plant can't use. How was the phosphorus applied (form and method) and what is the pH of your system water?


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 Post subject: Re: Tomato Plants issue
PostPosted: Mar 9th, '16, 20:46 
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I applied liquid version of the phosphorus called PhosLife which is an organic product.PH level is at 7 +

Prior to applying it i can see the fruits are smaller and after application i noticed it kind of turned bigger.

Or should i use it as a foliar spray just to be sure that the plants are able to take in the phosphorus?


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 Post subject: Re: Tomato Plants issue
PostPosted: Mar 10th, '16, 01:35 
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Phosphorus is a mobile nutrient but if you want faster results I would spray it on (as long as the package says that's OK). That also avoids any pH lockout and problems with cross reactions. Phosphorus gets bound up with other things pretty quick (like calcium) and especially at pH's above 7 may not be available in some forms. The organic form is probably a bit less likely to have those problems but at some point the phosphorus does need to be released for the plant to use it (at least I believe it does :dontknow: ).

Since you've already applied some I'd try just a light dose to the stunted parts of the plant using it as a spray (assuming the manufacturer allows for this).


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 Post subject: Re: Tomato Plants issue
PostPosted: Mar 10th, '16, 07:12 
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Right will give it a spray or two as the product allows for foliar spray.

Will update on the report after a week. Thanks!!


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 Post subject: Re: Tomato Plants issue
PostPosted: Mar 17th, '16, 11:53 
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I have been spraying for a week now. I dont see any new developments.

Any chance of these to be calcium deficiency?

Its stunted growth as well


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 Post subject: Re: Tomato Plants issue
PostPosted: Mar 17th, '16, 12:36 
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Sounds like something else may be missing as well - this is where something like the blood and bone would help but I leave that up to you whether you want to try it. I'm not sure about the calcium - typically you'd see this with blossum end rot on tomatoes, not just issue with the leaves. If you're not seeing blossum end rot then I don't think it's calcium :dontknow:

I still think it's a nutrient deficiency but there are some other possibilities though -

Sometimes viruses can cause stunting - cucumber mosaic virus and Tomato mosaic viruses for example.

Are these determinate or indeterminate tomatoes? Just wondering if they've hit their growth potential :?

High temps at night above 70 or low temps below 50?


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 Post subject: Re: Tomato Plants issue
PostPosted: Mar 17th, '16, 14:03 
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I checked and sun sugar seems to be indeterminate.

Would say high temp at night as temperature is rising. I did provide cover to it.

Regarding blossom end rot does it happens to all the fruits? I saw 1 fruit with the edge looks different. Although it is not black and rotten but its like there is a line separating it from the main fruit.


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