2nd grow Day 68, autoflowers 4 short riders, 3 bubblicious, 600w mh/hps. I ran into a phosphorus deficiency ( i think) a few weeks ago so I flushed then watered 1/2 strength of GO grow box nutes. Now I have this leaf not sure if it's the same or what
So you flushed out the rootzone ...then re-poisoned them ...ok well Flush again to my blog: http://forum.grasscity.com/blog/1093/entry-9829-flush-baby-flush/
I'm learning as I go... This is only My second grow and thought they looked decent despite my experience but with all the contradicting info on the web and from ppl on correct methods, its hard to know whats right and wrong. But I was told by a lot of ppl to flush them to rid soil of salts or something then give a small dose of fertilizer because it was a deficiency and not a toxicity. I'm just unexperienced lol
The dark ring spotting looks like botrytis leaf spot. This means your environment is too wet and the leaves are not drying fast enough when you water. Botrytis cinerea is an air borne spore that lands on wet leaves and will incubate and grow in less than a day causing brown or grey spotting surrounded by a dark ring. You need more air circulation in your growing environment.
The guys are correct but understand your autos at almost 2 months are almost done! understand that toward the end of a grow nute salts build up in the rootzone and can make life very difficult indeed for plants, washing out these salts removes also many deficiencies ..plants see it as a rainstorm ...in many strains of autos you get these days wilting (N) in leaves is one one to see your plants are due to harvest ...but not all strains of autos do this, as for mold ...not so lucky this time ..perhaps 8 months time in your case
Thanks for the info. Will start looking into that but what did you mean about the mold and 8 months time?