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N deficiency? overfert?! HELP!

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mgomespt View Drop Down
Sensi Seedling
Sensi Seedling

Joined: 25 July 2010
Posts: 1
  Quote mgomespt Quote  Post ReplyReply Direct Link To This Post Topic: N deficiency? overfert?! HELP!
    Posted: 25 July 2010 at 15:16
Hey Guys,

I'm currently growing two strains outdoors: Jackflash #5 from Sensi and BlueBerry from DutchPassion (I'm a newbie...It's my second year of growing...only outdoors).

The soil is a mix of Compo Sana Universal potting soil (60%), Vermicompost (30%) and additional perlite (10%). The vases have great drainage due to the lower layer of pebbles I've added, protected by a fine mesh.

For plant food, I've only used powdered guano (about 50% more of the recommended dosage)...let it break down in the soil for about 2 weeks before transplanting the babies. The ratio for this guano is:
- 11% N (2.5% Amonia, 8.5% organic)
- 6% P
- 3.5% K

- 3% Mg
- 2% S

and...52% of "general organic matter".

They're both about 9 weeks in vegging. Now, as you can see on the following pics, My Jackflash is showing a lot of crispy/yellow lower leaves, and it's getting worse. The whole plant looks a bit pale as well.

I'm going only organic, can you guys help me diagnose what's going on with my baby?

A few additional notes:

They're LST'd, and when this problem started happening about 3 weeks ago, I've added a little bit more of the powdered no effect.
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snoopy85 View Drop Down
Sensi Advanced Grower
Sensi Advanced Grower

Joined: 19 February 2007
Location: come finde me
Posts: 645
  Quote snoopy85 Quote  Post ReplyReply Direct Link To This Post Posted: 25 July 2010 at 19:17
yellow leaves are first an indicate for to less Nitrogen.this can happen due several reasons first cause u just gave 50 percent of dosage of your fertilizer or the worser u gave too much water so this spoiled out any nutrients including the nitrogen which is the first defieciency u see on plants cause in veg, when u not overdose the dossage as written on fertilizer package u cannot give them to much nitrogen cause they need so a lot
anyway I would recommend u to give ur plants some roots stimulator that they can better take up the nutrient and for case of overwatering that they hurts can recover
cause u said ure a newbie I recommend u to have a look at this guide here
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