Plant Moisture Stress - Symptoms and Solutions

pilot011972 said:

I have attached some pictures for you. Please ask any questions you might have.

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I did, now let's try this again. What is the NPK value of your Grow food? They look fine to me BTW.

mcpurple, same question goes to you, also how much food did you give them? If you try to push your plants, with anything - light, nutes, water, etc., it will work against you.

Just a comment, there are many factors that can cause stress in a plant. I'm not a mind reader, I'm not there observing your everyday activities. Showing me a photo and asking "what's wrong with my plant" will usually get you no response from me.

Just a heads up,
UB

Sorry ub should of added more info, well i always seem to have a yellowing prob early into flower do to it having low doses of N. so i switched nutes and gave them veg nutes for the first 2 weks of flower to keep them greener well on my last feed they all of a sudden started to yeloow and kinda get rusty and fall off about ten came off this morning and its only been a prob for 3 days now but i can tell it is getting worse. so heres my info.

600 watt light with 200 watt cfl for xtra light. strain is shishkaberry. planted in 3 gal pots the day they were put into flower, they are 24 days into flower. and here is my feed shedule for them for the last few weeks. also i am using GH floranove grow and bloom grow NPK is 7-4-10 and the bloom NPK is 4-8-7 heres the feed chart.
day 1 of flower they were fed1/2 tsp of veg and 1/4 tsp microblast from earthjuice. then on 3-23-10 i fed them 11/4 tsp veg nutes along with 1/4 tsp bloom nutes on 3-27-10 i gave them plain water till i had about 5 percent runoff just a trickle of water comeing out the bottom. then on 3-30-10 i fed them with 1 1/4 tsp bloom and a 1/4 tsp of supernaturals superliciuose. the day after this feed is when it started to yellow out so i thought mabye its nute burn but some people are sayin it isnt and then yesterday i waterd them with plain water with mallases till i had about 30 perent runoff to kinda give it a small lil flush and it seems it didnt help at all. i ph all my water to 6.5-6.7 with and with out nutes. heres some pics from today u can see the yellowing that starts at the bottom and theri is a few larger yellow leafs up top. also a pic of all the leafs that came off this moring with a touch they seem to have like rust spots that are dry. i cant tell if this a Def. of somsort or overnuting. also a pic of my other plants to campare color the others are nice and dark green still wich is hat i am trin to do is keep them green.
also here is what my bottle of nutes says to add to the plants. it says 1/2 tsp for seedlings. 1 tsp for most plants during earlt growth. 2tsp for most plants during later growth and then finally 3 tsp per gal for rapidly growing plants hope this info is what u need if u need any more i can give it. my temps are 75-80 lights on and 65-70 lights off

mcpurple said:

Sorry ub should of added more info, well i always seem to have a yellowing prob early into flower do to it having low doses of N.

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Appreciate the extensive write up. Sounds like they haven't been getting enough N and/or the root system is screwed up.

question for uncle ben seems like he knows his shit. Is it possible to kill my plants because of to much c02 and is there ne symptoms the pklants will show due to too much co2?? thanks

Uncle Ben said:

Appreciate the extensive write up. Sounds like they haven't been getting enough N and/or the root system is screwed up.

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funy u say that cuz this morning i popped the root ball out and it was way root bound so i pur them in 5 gal pots now i know this shouldnt be doen in flower but i think it will help

smoke3Ls said:

question for uncle ben seems like he knows his shit. Is it possible to kill my plants because of to much c02 and is there ne symptoms the pklants will show due to too much co2?? thanks

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CO2 can be toxic. There is a saturation point for everything, including light.

mcpurple said:

funy u say that cuz this morning i popped the root ball out and it was way root bound so i pur them in 5 gal pots now i know this shouldnt be doen in flower but i think it will help

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Won't hurt but won't help either. Once a plant switches to a flowering mode, root production is put on hold or at least kept to a minimum. When you harvest, pop it out to inspect the rootball and report back please.

Good luck,
UB

wil do ub, i think it should work. i had a cutting that i put into flower the first day it shoewd a root the root was about 1/4 i placed in a half gal pot and into flower and within now 2 weeks later the roots are growing out of the pot, but when it is harvested i will for sure post a pic of the root mass to see if theri is any new growth. i also did this with a flowering plant a awhile ago it was root bound in a 5 gal pot 3 week of flower so i transplanted to a 10 gal after one week i ended up tossing the plant do to it being seeded. i pulled the plant out of the pot and new roots were made and almost to the sides and bottom of the pot so no doubt they still grow in flower but im sure not near as much as in veg. thanks for the info UB

Uncle Ben said:

Once a plant switches to a flowering mode, root production is put on hold or at least kept to a minimum. When you harvest, pop it out to inspect the rootball and report back please.

Good luck,
UB

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so many people transplant into large pots right before they flower

So if I go from 1 gal pots into 5 gal, I need to let them veg for a while in the 5 before flipping them, right?

I guess I should make more space for my veg area.

UB i just though this, and dont know if i mentiond it, im not questioning your anwser u gave me about the roots slwing down alot in flower. but my plants that are having the probs were in 2.7 liter pots from theri i transplanted them into 3 gal pots and that same day they went into flower. now after three weeks of flower it seems to me that th roots grew alot in three weeks of flower to the point of being root bound

I'm jest saying that once a plant switches into a strong flowering mode root production is put on the back burner. You'll just have to take a look at the rootball upon harvest and draw your own conclusions. You should have much greater root growth if you upcanned 3 weeks prior to flippin' than 3 weeks after.

A plant takes a certain amount of time to become established after it's been upcanned.

Uncle Ben said:

I'm jest saying that once a plant switches into a strong flowering mode root production is put on the back burner. You'll just have to take a look at the rootball upon harvest and draw your own conclusions. You should have much greater root growth if you upcanned 3 weeks prior to flippin' than 3 weeks after.

A plant takes a certain amount of time to become established after it's been upcanned.

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i understand that thr root growth lows alot, and like i said i will post a ppic of ther root ball when finished to show if they grow decently. and ya i know it would have been better to do three weeks before but my veg room is to small for the bigger pots thats why i flweor the day i transplant. it doesnt really seem like growth is slowed when i do this though but i could be wrong as i am no expert.


also i was wondering when a plant uses the most nutes, i would think it is during the strech and when the buds are growing, but through the strech i should still be givin them quite a bit of veg nutes right to keep them more green

Uncle Ben said:

You'll have abundant foliage and the pot will need watering often. The condition and mass of the foliage pretty much indicates the same with the root system.

tryinghard, thanks bro. It's helped out alot of people over the years. It's pretty basic stuff but sometimes we lose sight of the forest for the trees.

UB

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Ok, so i recently added a 3rd light to my plants as their in the last few weeks of flowering. But since i have done this a number of plants in the middle of the group have started showing signs of leaf cupping but only on the very top buds. Am i safe to say this is because of too much light??? as the room is 29 deg celcius 30% humidity and i know my nutes and watering are spot on??

P.s forgot to say thanks for the info very usefull, and fuck me man some people know some shit about plants haha

badja said:

Ok, so i recently added a 3rd light to my plants

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What kind of light?

hey ub i i took my girls out today for a look at them, and i looked underneath the pot and roots were shooting out of the bottom, i would take a pic but its hard to hold the pot up and take a pic. their is about 25 holes in my pot on the bottom and roots are coming out of them all. i think they do grow a bit slower in flower but not alot, they grew in to those pots pretty fast. when i harvest my plants i will take a pic of the roots and how much they grew while flowering

k shes bout 3 wks old just started addin ff big bloom and bout a week later grow big went by the feedin sched on there site...since i just started addin the nutes i figured its nute burn but what yall think?? and i only water them when they need it not every day and pics are from same plant growth as stopped for bout 5 days i bet usin cfl a little droopy rest of leaves look good too

soohighrightnow said:

k shes bout 3 wks old just started addin ff big bloom and bout a week later grow big went by the feedin sched on there site...since i just started addin the nutes i figured its nute burn but what yall think?? and i only water them when they need it not every day and pics are from same plant growth as stopped for bout 5 days i bet usin cfl a little droopy rest of leaves look good too

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Way to early for big bloom, prolly a bit early for nutes at all but should be somewhere at 1/4 strength grow big every 3rd watering (but I would wait a few more weeks before doing that)

does look like a nute burn but also look overwatered, did you take the pics right after watering???

mcpurple said:

hey ub i i took my girls out today for a look at them, and i looked underneath the pot and roots were shooting out of the bottom, i would take a pic but its hard to hold the pot up and take a pic. their is about 25 holes in my pot on the bottom and roots are coming out of them all. i think they do grow a bit slower in flower but not alot, they grew in to those pots pretty fast. when i harvest my plants i will take a pic of the roots and how much they grew while flowering

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Sounds good.

hi, im a newbie and my leaves are going yellow during flowering. there are a few that go yellow during growth stage but lots in flowering. some leaves have got a few brown spots bit only a couple. im on a 3 feed to one H2O with bio flores in soil. what am i doing wrong? how can i fix it? thanx.

x2misty said:

hi, im a newbie and my leaves are going yellow during flowering. there are a few that go yellow during growth stage but lots in flowering. some leaves have got a few brown spots bit only a couple. im on a 3 feed to one H2O with bio flores in soil. what am i doing wrong? how can i fix it? thanx.

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Give them some veg nutes. Your plants still need Nitrogen during flowering, and most flower nutes do not provide enough.

Chlorophyll is constantly being broken down by light, so we need to supply enough N to create more. If you dont your buds/newest growth will steal N from your lower leaves to meet their needs. Not only do you end up with greatly reduced chlorophyll production from lack of N, but its also being stolen from the very leaves that drive bud production. Vicious cycle id say.

im in 5th week of bloom , just did the second round of power to bloom and started on the overdrive boost alonf with my cana a + B , so i had 2 600w hps lights in my room , its roughly 7ft wide 5 ft deep , got 16 afghan blues in there, so i added the 3rd 600w hps ,a cannatronics eco lite and over the past few days the top leaves on the biggest plants have started curling. So i read your thread yesterday and took the cannatronics light out of there but now im noticing slight discolouration on tips of some leaves , which would lead me to nute burn but i gave my plants a full watering last week before i switched from big bud to overdrive and started building my nutes up. iv pulled one out of the room so ill take a few pics now and see what you think mate, cheers