Return to the Hydroponics Forum | Post a Follow-Up

 o
Romaine lettuce tip burn

Posted by nekbet 6 (My Page) on
Fri, Mar 21, 14 at 9:33

Seed 12/7/13
Germ 12/12/13
DWC 'nursery' 1/25/14
NFT channel somewhere around 2/7
Harvested today 3/21

Notice the tip burn in the picture. Rest of plant is healthy. Weighed in at 446 grams

PH has crept up some lately to around 7, but mostly 6.2-6.5. Water temp is cool, low 60's (F). Air temp is around 62-64f and humidity 40-50%.

I'm using Masterblend 4-18-38... ratio 2:2:1 for masterblend, calc nitrate, epson salt (as rec'd here, thanks!), at a concentrate to get my around 700-800ppm (on a 500 scale, so 1.4-1.6 EC).

I am thinking I should be simply using EC instead of PPM, as I think 1.4 is a little high for leafy greens..

thoughts?
thanks,


Follow-Up Postings:

 o
RE: Romaine lettuce tip burn

It looks good to me, congrats!

You seem to be doing everything right, even though the temperature and humidity are nice, I still wonder if the plants are getting enough ventilation when the tip burn is happening? I'd be afraid to risk cutting the CAN, if anything I'd want to bump it up, but reducing the the blend by 10% might be worth a try. I think I want a Cesar salad now ;-)


 o Post a Follow-Up

Please Note: Only registered members are able to post messages to this forum.

    If you are a member, please log in.

    If you aren't yet a member, join now!


Return to the Hydroponics Forum

Information about Posting

  • You must be logged in to post a message. Once you are logged in, a posting window will appear at the bottom of the messages. If you are not a member, please register for an account.
  • Posting is a two-step process. Once you have composed your message, you will be taken to the preview page. You will then have a chance to review your post, make changes and upload photos.
  • After posting your message, you may need to refresh the forum page in order to see it.
  • Before posting copyrighted material, please read about Copyright and Fair Use.
  • We have a strict no-advertising policy!
  • If you would like to practice posting or uploading photos, please visit our Test forum.
  • If you need assistance, please Contact Us and we will be happy to help.


Learn more about in-text links on this page here