Help diagnose my problem please :)

schtrudel

schtrudel

Active Member
New pictures of my baby .... she is in 3rd week of flowering and i've noticed yellowing of lower leaves ... this might be N deficieny for i have recently ( yesterday ) flushed the soil ...
i feed it 2 ml of 6-5-4 NPK fert every 4 days or so ...
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i CANT test pH of the soil :| because i don't have money to buy pH tests... im going to my gf's work place and ask her to give me some if they have any left .... i'm worried like hell
oh, i had this problem 2 weeks ago and i solved it by adding more ferts ( back then i wasn't giving it enough, now i've deprived it lately in fear of over fertilising ) .................
 
schtrudel

schtrudel

Active Member
also some of the lower leaves... in random lower locations, see papery, this might be because of heat but i've put a fan to blow directly on it and in the grow room it's about 27-29 degrees, no more , maybe less in the early morning ( 23 degrees celsius )


EDIT': leaving now with a sample of dirt to have it's pH tested , and a sample of my tap water to have it's pH level tested too ... :( so sad, i love my girl
 
gopherbuddah

gopherbuddah

Well-Known Member
Nitrate - Ammonium is found in both inorganic and organic forms in the plant, and combines with carbon, hydrogen, oxygen and sometimes sulfur to form amino acids, amino enzymes, nucleic acids, chlorophyll, alkaloids, and purine bases. Nitrogen rates high as molecular weight proteins in plant tissue.

Plants need lots of N during vegging, but it's easy to overdo it. Added too much? Flush the soil with plain water. Soluble nitrogen (especially nitrate) is the form that's the most quickly available to the roots, while insoluble N (like urea) first needs to be broken down by microbes in the soil before the roots can absorb it. Avoid excessive ammonium nitrogen, which can interfere with other nutrients.

Too much N delays flowering. Plants should be allowed to become N-deficient late in flowering for best flavor.

Nitrogen Deficiencies

Plants will exhibit lack of vigor, slow growth and will be weak and stunted. Quality and yield will be significantly reduced. Older leaves become yellow (chlorotic) from lack of chlorophyll. Deficient plants will exhibit uniform light green to yellow on older leaves, these leaves may die and drop. Leaf margins will not curled up noticeably. Chlorosis will eventually spread throughout the plant. Stems, petioles and lower leaf surfaces may turn purple.​

 
schtrudel

schtrudel

Active Member
i flushed it yesterday and i didnt notice ( to be sincere i didnt look there ) any burn ... if i let it be will it spread ? it may have stopped
 
Shadeslay

Shadeslay

Active Member
I'm not really seeing anything to worry about myself. It looks like lack of adequate lighting on the lower leaves, that's killing them off, everything else appears quite healthy. I'm not saying your lighting is inadequate, simply the light reaching those lower leaves. You should probably trim that up anyway, as leaves still attached resting in the soil can cause problems, if it becomes moldy etc.



http://growweedeasy.com/marijuana-symptoms
 
schtrudel

schtrudel

Active Member
ok, so i've cut all lower unadequately lighted leaves and cut all the parts that touch the soil ... i shall closely monitor the situation
 
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