So I'm running my gelato auto from fast buds it calls for 56 days I'm on 67 days and it's clearly not ready it's more in mid flower. I'm noticing some leaves turning colors I wanted to ask if you run into a toxicity or def does that start at top of canopy or bottom of plant? And is this the plant showing its starting yinyellow out and show some color in leaves since in getting twords the end of its life? It was just watered with molasses about 2-3 days ago and is organically grown in Coco loko and mother earth dry amendments. Jan 31 was it's last top dress with bloom amendments.
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Some would probably say a light top dressing (i.e. 1 tbsp per gallon) would be ok while others would probably say to stick with teas for the remainder of the grow. The leaves on your plant still look very green so something light should get you by.
Coming up on a month since last top dress so it's not surprising to see deficiencies. The markings on your plant show in your pics don't look bad at all though. To answer your question: "if you run into a toxicity or def does that start at top of canopy or bottom of plant? " Both. Some nutrients are mobile and some are immobile. See this article for more info: https://www.canr.msu.edu/news/knowing_nutrient_mobility_is_helpful_in_diagnosing_plant_nutrient_deficienc