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What kind of deficiency is this?
- Thread starter maimunji
- Start date
Truthful
Member
If you could post a few pics of the whole plant and some specifics like enviro, lights, medium, nutes, etc you can get the help you need a lot faster. Looks like nitrogen def to me but it could be a problem with your roots or even heat stress, can't narrow it down without you being more specific.
Im 8 week in to flower and will start flush after few days. Just want to know if this is some kind of deficiency or maybe fungus gnats damage don't know I have few gnats around?
chronosync
Well-known member
My guess is a p or k def but that's fine your plant is robbing the leaves to feed the buds is my guess, since your flushing and harvesting now, that's good right?
S
sourpuss
Looks like overfeed burnt tips. Underfeed the leaves yellow and dont get crunchy. Comes from the bottom if its npk.
chronosync
Well-known member
I just did a Google image search for "phosphorus deficiency cannabis" a lot of pictures look just like yours. Too much calcium? Too high of pH? Idk...
What food? What medium?
This is exactly what worried me. leaves isn't too much yellowin like N def start at the bottom. But with overfeed burn I expect problem to spread fast. In this case spread is very slow and jump from leaves to leaves at the bottom and goes up.
Canna coco with canna coco a&b cal mag full dose every water and little pk 13 14 problem start when I drop pk so its possible like you say pk def. I give em full dose cal mag because with low dose or if I try to drop cal mag completely all plants show calcium deficiency immediately.
chronosync
Well-known member
I wish I could help you more, but I am having a similar problem with burnt tips and yellowing leaves that look N def.
ak craft grow
New member
Similar issue in coco
Similar issue in coco
I recently had similar effect, however, mine only effected top leaves. Mine was a result of accidentally dropping pH to around 4.5 for two days. Corrected pH and no new wilt/burn. Coco is pretty pH tolerant, but under 5.5 not good
Similar issue in coco
I recently had similar effect, however, mine only effected top leaves. Mine was a result of accidentally dropping pH to around 4.5 for two days. Corrected pH and no new wilt/burn. Coco is pretty pH tolerant, but under 5.5 not good
chronosync
Well-known member
Its my pH I need to get straight. 5.5 is OK but on the low side, but if you let it swing back up to say 6.2 and back to 5.8, that's not a bad deal. 4.5 is probably worse than 7. My pH monitoring is off because I can't read GH indicator.....api fish tank drops were better even only reading @6 I got consistent results. pH of 6 (roughly) always works for me.
ak craft grow
New member
Roger, I try to swing from 5.75 to 6.3 with Coco. Meter is way to go, it pricey, but if take care of, will last for long time
