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Tomato growth
http://byap.backyardmagazines.com/forum/viewtopic.php?f=3&t=24818		 Page 1 of 2
Author:  Tinh [ Apr 19th, '15, 16:02 ]
Post subject:  Tomato growth
Hello everybody,

I have developed the aquaponic system for 5 months and the system is running well so far. i have tapila fish and the fish is growing well no die it means that the NH3 level is at an acceptable limit.

My tomato is growing very fast with many flowers but it doesn't make any fruit at all eventhough i have tried to pollinate with hand.

Anyone please give me an advice what i have to do to get tomato fruit?

Thank you very much for your help

Please see attached picture about my tomato

Regards
Tinh

Attachments:
My tomato.JPG
My tomato.JPG [ 221.75 KiB | Viewed 6107 times ]
Author:  scotty435 [ Apr 19th, '15, 16:26 ]
Post subject:  Re: Tomato growth
Welcome to the forum Tinh :)

What is the air temperature where you are?
Sometimes the temp or high nitrates can cause this.

Cheers
Author:  Tinh [ Apr 19th, '15, 16:34 ]
Post subject:  Re: Tomato growth
Thanks for quick feedback

The air temperature is about 27-29 oC

Cheers
Tinh
Author:  scotty435 [ Apr 19th, '15, 17:14 ]
Post subject:  Re: Tomato growth
The upper end of your daytime temps is close to (just barely below) where tomatoes have troubles with fruit set. If your nights are staying above 24 C then you'll also have troubles getting fruit set.

What do you have for your nitrate reading?
Author:  Sleepe [ Apr 19th, '15, 18:23 ]
Post subject:  Re: Tomato growth
Also possibly prune the plants ie remove some of the leaves (the whole leaf with stalk) especially the lower leaves. :)

Edit
It slightly stresses the plant and allows for better air circulation.
Author:  Tinh [ Apr 19th, '15, 21:07 ]
Post subject:  Re: Tomato growth
The nitrate reading is about 30ppm

OK i will prune the plant see what happens

will update soon

thanks alot
Author:  scotty435 [ Apr 20th, '15, 04:35 ]
Post subject:  Re: Tomato growth
Cookie would probably know this off the top of his head since he's growing lots of tomatoes, I think your nitrates are OK because he has run at those levels and had plenty of tomatoes. If you don't see any improvement with the temp falling or the pruning you might try adding some bone meal (just a little at the base of each plant) to the grow bed since it's high in phosphorous and spray on a bit of Seasol for the potassium. There are other ways to do this without additions but this is the simplest. There is a thread on mineralization but you might want to look at Cookies thread to see what he is doing with filtration and where he's at with growing tomatoes - http://www.backyardaquaponics.com/forum/viewtopic.php?t=20661
Author:  cookie [ Apr 20th, '15, 05:43 ]
Post subject:  Re: Tomato growth
Hi hi I saw my name by accident... so what seems to be your concerns
Author:  scotty435 [ Apr 20th, '15, 06:54 ]
Post subject:  Re: Tomato growth
Hi Cookie :thumbright: . He's getting flowers but no tomatoes with fast plant growth and nitrates about 30. I noticed your nitrates are running about this and thought maybe you might have a suggestion or two on your thread that could help him. Right now I've suggested adding bone meal as a simple way to up the phosphorus (this should work if the pH is below 7 from what I've read), what do you think?

Cheers
Author:  cookie [ Apr 20th, '15, 07:00 ]
Post subject:  Re: Tomato growth
umm I see flowers and all seems to be open.. it can just be a simple pollination problem. maybe just try to hand pollinate and see if it makes a problem... if it was a nutrients problem the flowers may fall off before it even opens up. other than that sunlight is a next major factor.. more sunlight better fruiting.
Author:  scotty435 [ Apr 20th, '15, 07:33 ]
Post subject:  Re: Tomato growth
He gave the hand pollinating a try and didn't have any luck. Sounds like were on the right track though. Thanks Cookie :thumbright: .
Author:  cookie [ Apr 20th, '15, 07:51 ]
Post subject:  Re: Tomato growth
Hand pollination of tomatoes is a bit tricky... to best simulate a bee I use an electric toothbrush and gently touch the stem of the flowers to cause it to vibrate.. try that
Author:  Tinh [ Apr 20th, '15, 12:27 ]
Post subject:  Re: Tomato growth
Thank you all

i'll try
Author:  Tinh [ Apr 20th, '15, 12:39 ]
Post subject:  Re: Tomato growth
I'll look for vibration toothbrush and try

Thank you All

Regards
Tinh
Author:  Tinh [ May 20th, '15, 16:04 ]
Post subject:  Re: Tomato growth
Thank All for your support
Here is updated from my system, the first fruit of Tomato. I love it

Regards,
Tinh

Attachments:
IMG_0681.JPG
IMG_0681.JPG [ 123.58 KiB | Viewed 5899 times ]
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