Help! Phosphorus deficiency?

[Yammerz]

Hi gang,

Looking for some insight on an issue that’s cropped up over the last few days. I’m pretty confident it’s a phosphorus issue but I have been known to be wrong in the past!

Any ideas on how to remedy?

thanks in advance - x
—-



Problem: curling, yellowing/rust and dying leaves. Older growth and only on 1 of 2 plants in tent.
-Medium/grow method: soil (Cré organic, perlite/kelp). Plants were started outside but brought in under lights with poor weather here.
-Feed and supplements used: Using Cré Grow (313) and Bloom (216) by now 2ml per l and 4ml per l respectively. Feeding every other water and watering every couple of days 2-2.5l per water with small amount of runoff.
-Water source: using tap water unknown ph since start (ph pen on the shopping list)
-Strain and age: Sticky beast (zamnesia) day 60 since sprouting
-Climate: moved from outdoor greenhouse where nights were as low as 13 celsius around day 37. Now Stable in the tent at 25c or so. Humidity
- Light used: LED 120w claimed 30cm from biggest girl

some photos…

Can be seen largely on lower leaves

Curling and yellow…

Close up

Fallen soldiers!

 

[Tom Bombadil]

youve got bugs munching your leaves and the plant appears underfed.
Looks like whitefly damage, hopefully not mites... check closely, the nice warm inside temps will make bugs worse.

 

[Yammerz]

I had noticed a few tiny black flies (gnats?). No sign of whiteflies. Believe it or not I also found a caterpillar yesterday who i assume was the culprit of the big chunks out of the leaves. He is back out in the garden now with his pals.

I assume best course of action is a spray down with some soap and water and up the feed?

 

[Tom Bombadil]

images of whitefly damage

 

[Tom Bombadil]

im thinking it could be thrips as well.. and if you havent seen white flies around, its very likely.. not a huge deal.. but u sure dont want caterpillars in your buds.. could cause budrot

 

[Tom Bombadil]

spot on...

 

[Yammerz]

Thanks T. A bit strange that it’s isolated to one plant in the tent? Her sis doesn’t seem to be affected. I’ll get them out this morning for a closer inspection and spray.

 

[Yammerz]

Took them both out earlier and had a good look.

no sign of any mites or flies at all now and only one plant has the issues. Underside of leaves all looking good.

soil is a bit damp still but will give her another good feed next time and hopefully things don’t get worse.