Boron deficiency, or calcium deficiency---or could it be nitrate excess? - Fertilizing - Aquatic Plant Central

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Old 06-08-2010, 11:23 PM   #1 (permalink)
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Default Boron deficiency, or calcium deficiency---or could it be nitrate excess?

I have improved the picture of boron deficiency in Hemianthus.
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Old 06-09-2010, 09:52 AM   #2 (permalink)
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Default Re: Plant Deficiency Picture Diagram

I guess, recovery was after adding boron?
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Old 06-09-2010, 01:12 PM   #3 (permalink)
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Default Re: Plant Deficiency Picture Diagram

Yes, It was after adding boron. Looking carefully at the two pictures, I see that in the deficient plant some of the branches were more badly affected than others, and these branches, while they grew about two internodes during the four days, had not improved leaf shape very much. The less affected branches started producing bigger, more normal leaves. I don't know why, but I seem to get boron deficiency frequently if I don't keep up with my micronutrients.
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Old 06-09-2010, 06:50 PM   #4 (permalink)
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Default Re: Plant Deficiency Picture Diagram

It's all so tricky... I've gone through it so many times. Sometimes you are looking at your plants and thinking there is boron deficiency and adding more boron, and situation is improved, but not for long time... After a while you are facing again the same stunted growth, and adding yet more boron... And eventually you think that it is boron overdose rather than deficiency... In fact it might be calcium or CO2 deficiency.
I don't mean that you are wrong with adding boron. Just I personally would start from bigger side, would check first my GH and CO2 level, and then increase traces, not boron only but all together.
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Old 06-09-2010, 07:44 PM   #5 (permalink)
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Default Re: Plant Deficiency Picture Diagram

It has to be either boron or calcium. If I want to add calcium quickly, I add lime in small amounts while adding CO2 to keep the pH from going too high. If I want to add it more slowly, I add some ground limestone. The way to do it is to make sure there is enough calcium, and then, if you see stunted new growth or stubby roots, it has to be boron. For me, adding boron usually lasts for a long time. I don't change water very often, and I usually have to add some more boron after the tank has become fairly full of plants. Then, when the tank becomes packed with plants and the fish start having a hard time getting to where I put in the food, it is time to clear out most of the plants and change the water.
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Old 06-09-2010, 08:01 PM   #6 (permalink)
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Default Re: Plant Deficiency Picture Diagram

Nice pictures! The boron problem seems similar to the Rotala macrandra boron deficiency I had. It looks nearly identical. On mine though the deficiency became severe and almost all the leaves seemed to curl downwards along the edges. So the edge of the leaf tucked itself under the main part of the leaf. Calcium deficiency seems to look different, more like someone just pinched the leaf in certain places and the rest grows normally for a while and then pinches off in another direction.

Very interesting stuff. I'd love to see more boron deficiency pictures since it is very uncommon to see photographs of it in aquatic plants.

I think low boron levels might be the reason Rotala mac. is considered a hard plant to grow. I think it is much more sensitive to boron deficiency then most other plants and may actually require slightly more boron then is normally available in the water supply or CSM+B mix.

The holes are from snails chewing away at the leaves not other deficiencies.




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Old 06-10-2010, 07:29 AM   #7 (permalink)
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Default re: Boron deficiency, or calcium deficiency---or could it be nitrate excess?

Zapins, did you check CO2?
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Old 06-10-2010, 08:21 AM   #8 (permalink)
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Default re: Boron deficiency, or calcium deficiency---or could it be nitrate excess?

Yup, the tank had CO2 dosed via reactor style.
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Old 06-25-2010, 01:42 PM   #9 (permalink)
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Default re: Boron deficiency, or calcium deficiency---or could it be nitrate excess?

I just got another boron deficiency picture, this time in an amazon sword. The small, distorted leaves of the sword are similar to the small distorted leaves of the H. micranthemoides plant. Calcium deficiency is similar, but the distorted leaves have white patches or streaks you don't see with boron deficiency.

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Old 06-29-2010, 07:06 PM   #10 (permalink)
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Default re: Boron deficiency, or calcium deficiency---or could it be nitrate excess?

Can you ID this as a Boron deficiency and instruct me how to rectify it?

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