leaves brown and yellow spots--2nd day of flowering help!

SuthernKumfert

SuthernKumfert

Well-Known Member
first off i vegged for 5 weeks to the day, i am using a simple hydro set up with 4 foot fluro's using 6500K lights with dyna grow nutes, i just switched them in to flowering 2 days ago and i also switched them from the dyna grow nutes to dyna bloom and i switched the lights to 3100K lights and i noticed they did get a little bigger over the two days but some of the leaves are starting to get some brown and yellow spots on them...is this normal...dont get me wrong most of the leaves look just as they did before i switched to flowering but there are a few that look like the pic below...please help me with this!
 
Look closely, and you'll see the brown leaf edges that are indicative of heat stress. This damage looks alot like nutrient burn, except it occurs only at the tops of the plants closest to the lamps. There's only one cure for this...get the heat away from the plants, either by moving the lamps or moving the plants.
lite_burn.jpg

Figure​


There's a good chance that this bud was subjected to nutrient solution burn. These symptoms are seen when the EC concentration of hydroponic solutions is too high. These symptoms also appear when strong nutrient solution is splashed onto the leaves under hot HID lamps, causing the leaves to burn under the solution.
disease_org_newt_burn.jpg

Figure​
Many hydroponic gardeners see this problem. It's the beginning of nutriet burn. It indicates that the plants have all the nutrients they can possibly use, and there's a slight excess. Back off the concentration of the nutrient solution just a touch, and the problem should disappear. Note that if the plants never get any worse than this here, then the plants are probably just fine.
wpe00008.jpg

Figure​
Figure 4 is definitely an over-fert problem. The high level of nutrients accumulates in the leaves and causes them to dry out and burn up as shown here. You must flush with clear, clean water immediately to allow the roots to recover, and prevent further damage. The find the cause of the high nutrient levels.
nute_burn01.jpg

Figure​
 
Roseman said:
Look closely, and you'll see the brown leaf edges that are indicative of heat stress. This damage looks alot like nutrient burn, except it occurs only at the tops of the plants closest to the lamps. There's only one cure for this...get the heat away from the plants, either by moving the lamps or moving the plants.
lite_burn.jpg

Figure​


There's a good chance that this bud was subjected to nutrient solution burn. These symptoms are seen when the EC concentration of hydroponic solutions is too high. These symptoms also appear when strong nutrient solution is splashed onto the leaves under hot HID lamps, causing the leaves to burn under the solution.
disease_org_newt_burn.jpg

Figure​
Many hydroponic gardeners see this problem. It's the beginning of nutriet burn. It indicates that the plants have all the nutrients they can possibly use, and there's a slight excess. Back off the concentration of the nutrient solution just a touch, and the problem should disappear. Note that if the plants never get any worse than this here, then the plants are probably just fine.
wpe00008.jpg

Figure​
Figure 4 is definitely an over-fert problem. The high level of nutrients accumulates in the leaves and causes them to dry out and burn up as shown here. You must flush with clear, clean water immediately to allow the roots to recover, and prevent further damage. The find the cause of the high nutrient levels.
nute_burn01.jpg


Figure​
Click to expand...


thanks for the info and pics...mine looks like it can be either heat stress or over nutes...which do you think??? i think it may be over nute because i am using fluro's and the plants are not real close and the fluro's dont put off too much heat at all!
 
ok yall we have two plants that have shown their sex it looks like i have 1 bitch and 1 dude! take a look and give me your input!

the 1st two pics are the female and the last two pics are the male!
 
:dunce:duh u need help with that hahahah kill em all and throw away your equipment na just kidden two on right are males i bet my life on it!!!!:leaf::leaf::leaf::leaf:
 
If you want to go hi-tech and sex them now, you can take a dark plastic garbage bag, and make a sleeve, like on your shirt. Just cut it and use scotch tape to seal it, and make a short sleeve and put the sleeve over ONE branch. Normally, we do this at about 4 weeks. You want to hide one branch in total darkness, for 12 hours, then expose it to light, then cover it again, every 12 hours. Within a few days, that branch will think it is on 12/12 and it will make flowers, either male or female to let you know what it is.
 
Roseman said:
If you want to go hi-tech and sex them now, you can take a dark plastic garbage bag, and make a sleeve, like on your shirt. Just cut it and use scotch tape to seal it, and make a short sleeve and put the sleeve over ONE branch. Normally, we do this at about 4 weeks. You want to hide one branch in total darkness, for 12 hours, then expose it to light, then cover it again, every 12 hours. Within a few days, that branch will think it is on 12/12 and it will make flowers, either male or female to let you know what it is.
Click to expand...


my lights are on 12/12...i am oly a couple days over 2 weeks into flowering so the others will show their sex in the next few days!
 
ok guys i said i would keep you posted and here we go... i am 3 weeks into flowering and out of 7 plants i got 6 girls!!!!!!!!!!!! here are some new pics!
 
Sweet.. can I see pics of the entire plants? :D I'm interested in seeing how big they are since mine have been in veg about 5 weeks and I'm thinking of starting flowering soon.

:weed:
 
Calijuana said:
Sweet.. can I see pics of the entire plants? :D I'm interested in seeing how big they are since mine have been in veg about 5 weeks and I'm thinking of starting flowering soon.

:weed:
Click to expand...

sorry this is an old post and i am about 5 weeks into flowering now...but they were about 8-9 inches when i went into the flowering and they are now about 30 inches!
 
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