Boron deficiency, or calcium deficiency---or could it be nitrate excess? - Page 5 - Fertilizing - Aquatic Plant Central

Go Back   Aquatic Plant Central > Special Interest Forums > Fertilizing

Fertilizing Science of Aquatic Fertilizing - Discuss fertilizing techniques and proper aquatic plant nutrition here.

Reply
 
LinkBack Thread Tools Display Modes
Old 11-02-2010, 11:18 PM   #41 (permalink)
Member
 
Join Date: Sep 2010
Location: asia pacific
Posts: 41
iTrader Ratings: 0
grshs_vny is a regular member
:
Default Re: Boron deficiency, or calcium deficiency---or could it be nitrate excess?

You took a lot time mate.All the best
grshs_vny is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in Technorati
Reply With Quote

Advertisement [Remove Advertisement]
Old 11-03-2010, 06:36 AM   #42 (permalink)
Senior Member
 
bsmith's Avatar
 
Join Date: Dec 2006
Location: St.Louis, MO
Posts: 1,399
iTrader Ratings: 64
iTrader Positive Rating: 100%
bsmith is a regular member
:
Default Re: Boron deficiency, or calcium deficiency---or could it be nitrate excess?

All of the sao paulo looks pretty normal now though. The leaves are relatively straight and they arent growing downward. Its hard to find any info on the correct growth pattern of the plant though.
bsmith is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in Technorati
Reply With Quote
Old 11-09-2010, 01:16 PM   #43 (permalink)
Senior Member
 
bsmith's Avatar
 
Join Date: Dec 2006
Location: St.Louis, MO
Posts: 1,399
iTrader Ratings: 64
iTrader Positive Rating: 100%
bsmith is a regular member
:
Default Re: Boron deficiency, or calcium deficiency---or could it be nitrate excess?

Quote:
Originally Posted by grshs_vny View Post
You took a lot time mate.All the best
So what are your opinions on my higher nitrate levels and the appearance of a Boron deficiency?
bsmith is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in Technorati
Reply With Quote
Old 12-12-2010, 07:41 PM   #44 (permalink)
Member
 
Join Date: Dec 2009
Posts: 66
iTrader Ratings: 0
oscarjamayaa is a regular member
:
Default Re: Boron deficiency, or calcium deficiency---or could it be nitrate excess?

Nice, i would try to low N, Beacuse it seemed like B defficenci but .. weŽll se
oscarjamayaa is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in Technorati
Reply With Quote
Old 12-13-2010, 03:16 AM   #45 (permalink)
Senior Member
 
Elohim_Meth's Avatar
 
Join Date: Nov 2007
Location: Izhevsk, Russia
Posts: 114
iTrader Ratings: 0
Elohim_Meth is a regular member
:
Default Re: Boron deficiency, or calcium deficiency---or could it be nitrate excess?

After many months of struggle with stunting of my R. macrandra I believe I've found the solution at last. I tried boron and actually overdosed it. I was sure it wasn't Ca or CO2 deficiency because GH was 6-7 and my dropchecker showed 40-50 ppm. Hard to believe, it was CO2 after all (I guess). When dissolved in water, it takes long time for plants to absorb it (even if there is plenty of it), much longer than for emerged plants to absorb atmospheric CO2. So I splitted the photoperiod into 3 parts of 2 hours with 3.5 hours dark periods between them. Dark periods would allow plants to replenish their inner reserves with CO2, after my plan. And it worked. Stunting has gone. I've even decreased CO2 a bit, and lowered my MH fixtures.
Elohim_Meth is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in Technorati
Reply With Quote
Old 12-13-2010, 06:57 AM   #46 (permalink)
Senior Member
 
darkoon's Avatar
 
Join Date: Jun 2010
Location: NYC
Posts: 519
iTrader Ratings: 53
iTrader Positive Rating: 98%
darkoon is a regular member
:
Default Re: Boron deficiency, or calcium deficiency---or could it be nitrate excess?

Quote:
Originally Posted by Elohim_Meth View Post
After many months of struggle with stunting of my R. macrandra I believe I've found the solution at last. I tried boron and actually overdosed it. I was sure it wasn't Ca or CO2 deficiency because GH was 6-7 and my dropchecker showed 40-50 ppm. Hard to believe, it was CO2 after all (I guess). When dissolved in water, it takes long time for plants to absorb it (even if there is plenty of it), much longer than for emerged plants to absorb atmospheric CO2. So I splitted the photoperiod into 3 parts of 2 hours with 3.5 hours dark periods between them. Dark periods would allow plants to replenish their inner reserves with CO2, after my plan. And it worked. Stunting has gone. I've even decreased CO2 a bit, and lowered my MH fixtures.
that is an interesting discovery, has anyone else had similar experience?
darkoon is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in Technorati
Reply With Quote
Old 12-13-2010, 06:57 AM   #47 (permalink)
Senior Member
 
HeyPK's Avatar
 
Join Date: Jan 2004
Location: Soggy Central Mississippi
Posts: 4,696
iTrader Ratings: 25
iTrader Positive Rating: 100%
HeyPK is a valuable member of the communityHeyPK is a valuable member of the communityHeyPK is a valuable member of the community
:
Default Re: Boron deficiency, or calcium deficiency---or could it be nitrate excess?

While a number of genera of aquatic plants have been shown to be able to accumulate CO2 in the dark (see Keeley, Jon E., 1998. CAM Photosynthesis in submerged Aquatic Plants, Botanical Review 64, #2, pp 152-158, available online), Rotala is not among the ones listed. However, Rotala may not have been examined for the ability yet. Just the same, it seems odd that not enough CO2 would cause distorted smaller leaves. Are you sure you have ruled out nitrate excess?
HeyPK is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in Technorati
Reply With Quote
Old 12-13-2010, 08:43 PM   #48 (permalink)
Senior Member
 
Elohim_Meth's Avatar
 
Join Date: Nov 2007
Location: Izhevsk, Russia
Posts: 114
iTrader Ratings: 0
Elohim_Meth is a regular member
:
Default Re: Boron deficiency, or calcium deficiency---or could it be nitrate excess?

Quote:
Originally Posted by HeyPK View Post
While a number of genera of aquatic plants have been shown to be able to accumulate CO2 in the dark (see Keeley, Jon E., 1998. CAM Photosynthesis in submerged Aquatic Plants, Botanical Review 64, #2, pp 152-158, available online), Rotala is not among the ones listed. However, Rotala may not have been examined for the ability yet.
Well, even if Rotalas are not CAM-capable, the dark periods are not complete darkness actually, there is light from window and room overall lighting, and maybe that's enough for plants not to close the stomata. Probably a good idea would be to have some additional light for the purpose.

Quote:
Originally Posted by HeyPK View Post
Just the same, it seems odd that not enough CO2 would cause distorted smaller leaves.
I believed it was a common knowledge... I've seen it myself more than once and read several accounts, especially when a CO2 tank is emptied and not get refilled in time, you can see distorted and small leaves on top of the stems.
Quote:
Originally Posted by HeyPK View Post
Are you sure you have ruled out nitrate excess?
I didn't change NO3 dosing. I don't like the idea of lowering nitrates because when I do it my toninas are starting to dissolve.
Elohim_Meth is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in Technorati
Reply With Quote
Old 12-13-2010, 09:02 PM   #49 (permalink)
Senior Member
 
HeyPK's Avatar
 
Join Date: Jan 2004
Location: Soggy Central Mississippi
Posts: 4,696
iTrader Ratings: 25
iTrader Positive Rating: 100%
HeyPK is a valuable member of the communityHeyPK is a valuable member of the communityHeyPK is a valuable member of the community
:
Default Re: Boron deficiency, or calcium deficiency---or could it be nitrate excess?

Quote:
I didn't change NO3 dosing. I don't like the idea of lowering nitrates because when I do it my toninas are starting to dissolve.
That is weird! That does not sound like nitrogen deficiency. Could it be potassium deficiency?
HeyPK is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in Technorati
Reply With Quote
Old 01-08-2011, 04:26 AM   #50 (permalink)
Senior Member
 
Elohim_Meth's Avatar
 
Join Date: Nov 2007
Location: Izhevsk, Russia
Posts: 114
iTrader Ratings: 0
Elohim_Meth is a regular member
:
Default Re: Boron deficiency, or calcium deficiency---or could it be nitrate excess?

Update. After temporary improvement things went even worse. Next I tried to cut nitrates, but after 3 days R. macrandra started to melt and die off. Maybe I cut NO3 too low. Now I think I should add N through ammonium nitrate and urea.
Elohim_Meth is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in Technorati
Reply With Quote
Reply


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

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -8. The time now is 07:36 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.

Search Engine Friendly URLs by vBSEO 3.5.2