Problem Identification needed

[awing]

Please see attached images:

Plant is 30 days old, showed no signs of burn or issues until about 6-7 days ago with some spots in the center of the leaves. i figured it was from adding nutes to the water (1/4 strength). I have since stopped using them. The older more developed leaves seem to be affected, however the new growth doesn't seem to have the same issues ( to me that means all is fine). Leaves seem to cup ever so slightly up. Temps range from 74-84 degrees, leaves feel fine (not brittle), nice fragrance, 18/6 light (4X23w CFL, 1X28w CFL, 1X23w 2700K to help it stretch), soil and water all balanced at 6.7-7.0

• Image 1(90) is the most concern
• Image 2(91) shows some damage on the edge
• Image 3(92) shows some spotting
• Image 4(93) shows new growth

I am concerned that i may have overlooked something, your assistance is greatly appreciated!!!! Should I trim off the damaged leaves?

 

[the75bag]

just give it water for a week and see what happens but burn will creep up from the bottom so keep an eye out and see what happens i would use some vermi t to help eat that stuff up

 

[awing]

just give it water for a week and see what happens but burn will creep up from the bottom so keep an eye out and see what happens i would use some vermi t to help eat that stuff up

vermi = Vermiculite?

Should I trim those leaves that are most damaged? I think its probably that when i used the nutes i sprayed the leaves with it. Should you ever spray the leaves with water or nutes?

 

[glassblower3000]

vermi = Vermiculite?

Should I trim those leaves that are most damaged? I think its probably that when i used the nutes i sprayed the leaves with it. Should you ever spray the leaves with water or nutes?

trim them if more than 50% of the leaf is damaged...also yes you can spray your plants with certain nutes, that practice is called "foilar feeding" but you use a very dilluted mixture....hope this helps, peas.

 

[awing]

trim them if more than 50% of the leaf is damaged...also yes you can spray your plants with certain nutes, that practice is called "foilar feeding" but you use a very dilluted mixture....hope this helps, peas.

Each individual leaf or the leave (5) as a whole? +Rep btw thanks for the fast response

 

[Integra21]

Foliar feedin during flower is gernerally a bad idea. It can easily lead to bud mold. It can also burn leaves even if its strait water if they are under HID lights. I doesnt look like you over ferted them, more likely that the foliar just dripped down onto the lower leaves and accumulated causing a burn. Feed them lightly over the next week, and if the problem doesnt progress, just go back to your normal schedule. I would also suggest practicing your foliar efforts on a test plant that doesnt matter much until you get the hang of it. And its always safer to only do it during veg. Hope this helps. Any other questions, feel free to ask.

 

[glassblower3000]

yes each leaf.

 

[awing]

I ended up flushing the plant, the water I was feeding it was at 6.7-7.0 but had a 220ppm in it. I flushed it with RO water which was at 6.7 and 14ppm. I think on top of the foliar feeding that burned the leaves there was a salt build up. I'll have to wait and see if stuff bounces but for now I'm trimming damaged leaves ( over 50%). I'll wait till i re-add nutes, my idea was to do water, water, nutes then repeat... good or bad idea?

 

[jawbrodt]

That sounds like a good plan. And like you suspected, the healthy newer growth is a sign that the plant is happy, and has likely recovered. Flushing was a good idea though, as 220 PPM water is rather 'hard' so it was wise to switch to RO water before you ran into lockout problems. Should be good to go.

Also, foliar feeding isn't necessary, and is normally used to correct deficiencies, or to maintain a plant that is having PH problems, etc....until the problem is corrected. It's not going to hurt anything, but may contribute to overfert. If the plant is getting all it's nutes from foliar feeding, it won't need any from the soil, and that could cause nutes to build up in the soil. (foliar feeding is 8-10X more efficient than root absorbtion)

 

[glassblower3000]

That sounds like a good plan. And like you suspected, the healthy newer growth is a sign that the plant is happy, and has likely recovered. Flushing was a good idea though, as 220 PPM water is rather 'hard' so it was wise to switch to RO water before you ran into lockout problems. Should be good to go.

Also, foliar feeding isn't necessary, and is normally used to correct deficiencies, or to maintain a plant that is having PH problems, etc....until the problem is corrected. It's not going to hurt anything, but may contribute to overfert. If the plant is getting all it's nutes from foliar feeding, it won't need any from the soil, and that could cause nutes to build up in the soil. (foliar feeding is 8-10X more efficient than root absorbtion)

good advice!!!