K-Lite-EA

[Califoutdoors]

…the plants will perform way better with the extra ammonium. It could go higher even…

I agree. I think I’m going to order Ray’s 15% formula (‘cause there ain’t too many games in town), but I would have liked to have seen more like 30% ammonium, maybe even a touch of urea…

 

[Arne]

Remember, it is very important to store fertilizers containing urea dry in a sealed container.

 

[Roots]

Remember, it is very important to store fertilizers containing urea dry in a sealed container.

Thank you. 😊

 

[Ray]

A while back, I experimented with adding some urea and ended up with a series of rots. Intellectually, I doubt a connection, but I saw what I saw.

 

[Roots]

Hummmm, interesting. I added some to my watering this past month and have seen some mold appearing. Unfortunately, there were a lot of other changes as well so it is difficult to establish any sort of cause and effect. Something to keep in mind. Thank you.

 

[Arne]

In contrast to all the other components in a fertilizer, urea is an organic compound. Diluted in water it can definitely serve as a carbon source for bacteria, probably also for fungi.

 

[Roots]

In contrast to all the other components in a fertilizer, urea is an organic compound. Diluted in water it can definitely serve as a carbon source for bacteria, probably also for fungi.

Good point. Although, in organic potting medium there are all kinds of carbon sources. I suppose it depends on how readily the molecule breaks down. I do have to say I am not liking what I am seeing with urea added to my solution.

On a tangential note, this article popped up in my Google search today. It is old and deals only with phalaenopsis, but it is the first evidence I have found that paphs might be able to use urea when potted in inorganic medium.

https://www.researchgate.net/public..._can_absorb_urea_directly_through_their_roots

 

[gonewild]

I'm seeing positive results adding urea for my Phrags growing in leca.

 

[Califoutdoors]

Interesting twist to this thread for me. I’m adding urea starting tomorrow…🥴

 

[Ray]

Be careful, being it’s a 46-0-0 fertilizer, a little goes a long way and can be easily overdone.

0.82 grams/gallon is a 100 ppm N solution.

 

[Califoutdoors]

Be careful, being it’s a 46-0-0 fertilizer, a little goes a long way and can be easily overdone.

0.82 grams/gallon is a 100 ppm N solution.

Hey Ray, how are ya—your nitrogen dosing calculator has been a God-send in helping me to figure out the urea dosing. I plan on starting with 1/8 tsp/gallon, for 65-68 ppm/N. I also had to really look for a finer grade of urea that could be measured this minutely; most comes in larger granule sizes.

Thanks for that calculator!

 

[Nelson Wong]

I am willing to do an experiment. I have some hainanese seedlings that I can grow side by and side do some measurements for you if you want


I have to repot my compot and will be doing a substrate comparison between my regular orchid bark + potting soil + perlite vs rockwool.

I am also do a rock wool comparison between my current fertilizer (which is what selectorchid gave me) and your new k-lite.