Plant Ethylene Problem??

Rhyno · Sep 21, 2015

Question: Does anyone have pictures of an Plant Ethylene problem in flower? I am currently running in one of my rooms mixed spectrum- 1:1 ratio of 1000W HPS and 1000W MH and I am seeing a weird bud structure.

Here are some Pics of the problem...

Thank you!

~Rhyno

fishwhistle · Sep 21, 2015

Are you using CO2 burners?and are you bringing in fresh air at all or completely sealed?Usually an ethylene problem appears when using a burner and sealed and a there are a few ways to deal with it IF thats your problem,very hard to tell by those photos.

Rhyno · Sep 21, 2015

No CO2 addition yet. Waiting to get HVAC in this room before CO2 is added. Currently the room is being passively cooled. Fresh air in, Exhausting out 24/7.

Another question, could the mixed spectrum throw off the ethylene hormone production in the plant?

~Rhyno

Rhyno · Sep 21, 2015

Addition... The plant pistols started to turn and die early on in the flowering cycle - Week 3ish.

3N1GM4 · Sep 21, 2015

It may just be the pic but some look awfully close to the lights.

Lurkin4yrs · Sep 21, 2015

Where in the cycle are these plants and what are you feeding them? Foliar feeding?

Lurkin4yrs · Sep 21, 2015

That's a hell of a room btw

Rhyno · Sep 21, 2015

The lights are approximately 24" - 30" above plant canopy, I have a couple rows of Blue Dream, that need the hoods a bit higher. Cycle is Week 3-4 of Flower. I use H&G as the base plus some P-K boosters, and beneficials. I am not currently foliar feeding.

~Rhyno

Rhyno · Sep 21, 2015

Thanks Lurk... :-)

Rhyno · Sep 21, 2015

I found an article:
The Effect of Different Portions of the Sunlight Spectrum on Ethylene Evolution in Peach
(Prunus persica) Apices..

I only read the abstract, but it inferred that B/FR spectrum could/did inhibit ethylene production in peaches. Any thoughts?

~Rhyno

FooDoo · Sep 21, 2015

You've ran these cuts before under only hps?

Rhyno · Sep 21, 2015

Yes I ran all these cuts before only under HPS. Did fine. Wanted to change up this run, and added checkerboard RED/BLUE - each at 1000W. I ran past runs with mixed spectrum, but used 4x RED 1000W, and 1x BLUE 400W (as side lighting) in a 2 x 1 x 2 pattern. No problems.

noone88 · Sep 23, 2015

That does not look like the ethylene problem that I experienced.

Rhyno · Sep 23, 2015

Noone88, can you explain what you have seen before OR share pics? Thanks.

Rhyno

fishwhistle · Sep 23, 2015

Only time i have seen ethylene problems all had to do with using a co2 burner,is there anything else in that room that might be off gasing?

fishwhistle · Sep 23, 2015

Here is a great read on ethylene rhyno,
http://www.hort.cornell.edu/mattson/leatherwood/
Tomatoes are a great indicator plant,if its ethylene thats your problem the tomato plant will start to wilt pretty fast,think of them like a canary in a coalmine.

sixstring · Sep 24, 2015

i run pretty much the same ratio in my flower room and do not have any issues with many dif strains coming and going.i think its something other than the lighting.how old is this room,did it recently get new paint or drywall?

Rhyno · Sep 24, 2015

Thanks Fishwhistle, interesting article. I did see similarities, I will see what is needed to get an air sample.

Sixstring, this room has been running for almost a year. No new paint or drywall.

fishwhistle · Sep 24, 2015

Rhyno throw a home depot tomato plant in there and if it goes to shit overnight its probably ethylene,If not start looking at something else,sucks bro i know its frustrating as hell from experience.

sixstring · Sep 24, 2015

Is that plastic on the floor and is it new?also are these plants in new pots and if so were they rinsed out first?
Idk im just grasping at straws but i highly doubt it's the mixed spectrum lighting.i switched my room over to a 50/50 mix over a year ago,did it in the middle of a cycle on alotbof plants as i run a perpetual op.all my plants have loved it from day 1.i wonder if maybe something is coming in with your intake air?

Plant Ethylene Problem??

Plant Ethylene Problem??

Rhyno

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