11-13-2016, 03:14 PM
The Plant Whisperer
Join Date: Jul 2004
Location: Harrogate, TN
iTrader Positive Rating: 100%
| | Re: Buce turning pink & melting. Do I need fert?
What is going on is your stem plants have access to nutrients from their root systems. The buce plants do not have access and so have become deficient.
I cannot see the stem plants well enough to tell what is going on with them. Better photos are needed.
I can tell you that the buce plants have a macro deficiency not a micro deficiency. This is because the old leaves are affected not the newest ones (micros like iron are white new leaves, never white old leaves). This is consistent with a mobile nutrient like nitrogen, phosphorous, potassium or magnesium. Of these four only nitrogen and phosphorous are possibilities because of the damage type. I am leaning towards a nitrogen deficiency because the damage starts at the tip of the leaf and spreads back towards the base which is what I have seen most often with nitrogen deficient plants.
You will need to dose nitrogen regularly as nitrates. About 10 to 25 ppm per week is a good starting point. Old damaged leaves won't heal themselves but no further damage will happen. Www.deficiencyfinder.com
has photos of nitrogen deficient buce plants. Just scroll down until you reach the nitrogen deficiency photos and have a look.