[NAFEX] Pear seedling problems

Scott Williamson swilliamson at acespower.com
Tue Mar 2 14:44:17 EST 2004


Any ideas on the extremely dark colored leaves if it wasn't light?  Lack of some kind of mineral in my starting soil?  I would think that could affect fruit seedlings the same way.

-----Original Message-----
From: Tom Olenio [mailto:tolenio at sentex.net]
Sent: Tuesday, March 02, 2004 2:22 PM
To: North American Fruit Explorers
Subject: Re: [NAFEX] Pear seedling problems


Hi, 

I have grown tomato seedlings for years, and having the light too close is never an issue.  When the leaves touch the fluorescent bulbs I raise the bulbs just enough so they do not touch (1/4").  The lights also run 16 hours a day.  A small fan keeps the air moving, which moves the seedlings, which inspires strong stocky stems. 


Having the lights too far away gets you spindly stems, as the seedlings reach for the weak fluorescent light.. 


Transplanting tomatoes into too cool outdoor soil can set them back as you indicated. 


Later, 
Tom 


Scott Williamson wrote: 


If it's not a disease I would tend to think too much light or the light source too close.  I had some tomato seedlings I started one year and kept the light too close the them.  The leaves got darker and darker on them almost to the point of looking black until I planted them.  They never died, but they took about 2 months to recover and start growing normally. 

-----Original Message----- 
From: Martha Barrett / Scott Weber [ mailto:bluestem_farm at juno.com] 
Sent: Tuesday, March 02, 2004 12:59 PM 
To: nafex at lists.ibiblio.org 
Subject: Re: [NAFEX] Pear seedling problems 


Hi, 
I'll jump in with my two cents' worth, and suggest that maybe the air is 
too humid (although I realize that inside in the winter, that seems 
unlikely).  It the plant isn't transpiring, it isn't able to bring 
nutrients up from its roots and will die of malnutrition.  Maybe next 
time you can start them when the season warms and grow them in a 
sheltered spot outside? 
Muffy Barrett 
On Sun, 29 Feb 2004 21:18:21 -0600 "Dean Kreutzer"  writes: 
>       8d2db1a474b454fd9dd499f431ddf465d44005c494f4f4b504a5cd10a5cd2990909064ad207020c174d9b5a1d985c180f0bd79d9d995914dd9bdbdad511090815964d5a5a570b4e0a090d4c94089ed40193089305d5d41555538195411348511d9713471c1c1041414805d 
> 
>>It sure sounds like fire blight. Perhaps you planted your seeds in 
>>contaminated soil,  else it may be some kind of mineral deficiency if 
>>you planted in sterile potting soil. 
> 
>I used a peat/perlite mix. 
> 
>>Also are they warm enough? 
> 
>About 70F, which may not be warm enough.  Humidity 25%-30%. 
> 
>>Does your water have excess minerals (dog urinates on seedlings? ;-)? 
> 
>I use rainwater that I collected last fall. 
> 
>>Tiny insects such as spider mites? 
> 
>Nope, I checked that out right away. 
> 
>I really appreciate your thoughts, just nothing seems to stand out.  I 
> 
>thought it may be fireblight, but I would find that odd as there isn't 
>any 
>fireblight in the orchard where I did the crosses. 
> 
>Thanks again, 
> 
>Dean Kreutzer 
>Regina, Saskatchewan Canada 
>USDA zone 3 
> 
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-- 
Thomas Olenio 
Ontario, Canada 
Hardiness Zone 5b 
  

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