Romaine lettuce tip burn

nekbet(6)March 21, 2014

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..


Thank you for reporting this comment. Undo
PupillaCharites(FL 9a)

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 ;-)

    Bookmark   March 21, 2014 at 11:01AM
Sign Up to comment
More Discussions
Using Gravel as a growing media
This thread is created, and only for people who have...
Blooms dropping on Red Robin tomato in my Aerogarden, no new blooms.
I'm new to Hydroponics, I bought an Aerogarden a few...
wertach zone 7-B SC
Online Hydroponics Management Program. PonicsPal!
I developed an online hydroponics management program...
beginner needs help growing english ivy hydroponically
I'm doing a little experiment with growing English...
Nutrients and PPM
I'm new to hydroponics and have a question. I bought...
Sponsored Products
Red Vanilla Extreme White 9.75 in. Salad Bowl - EW3406
$60.28 | Hayneedle
© 2015 Houzz Inc. Houzz® The new way to design your home™