phosphorus

A scientific study was published in November 2021 about the optimum amount of nutrients for Cannabis. Increased K had no effect on inflorescence yield. 30 mg/L did not show deficiency nor did 340mg/L indicate toxicity. The study suggests that many commercial fertilizers supplied far too much K...

So a few days ago I noticed some lower leaves turning brown on the ends and edges, then they started to twist and curl upwards. After I noticed it we had an ice storm. I couldn’t keep my night temps warm enough. For about 3-4 days it got as low as 55-60F in there. Probably even lower below the...

This is my first year growing, raised several plants organically outdoors in the ground. Results were terrific. I started from seed in nursery pots then transplanted to the ground in June. Based on results of a soil test last spring, I dug 3' diameter holes about 1 foot deep and backfilled with...

Specs : Day 17 flower. 3x3 tent, 75-80degrees, 45-60 Rh depending on when I watered. Soil I am using is Roots Organic. 400watts LED, 2x SF2000. Taller Girls are about 12-15 inches from light . Supercropped them down tho to make even with rest of canopy, and lowered light to 80% intensity. So I...

Hey guys! Thanks for reading. Things have been going pretty good. Had to cull a few males so I’m down to 3 AGAIN. Getting fem seeds from here on out.. anyway..! I watered yesterday in the afternoon (not primo I know). Gave about a gallon each tap water to each plant in 5gal pots. 50/50 ffof and...

Thinking about feeding my organic outdoor grow some extra phosphorus in anticipation of flowering, I decided to take a look at what I have on hand instead of going out and spending more money on fish bone meal. I decided to give Tennessee Brown Rock a try--have most of a 25# bag on hand, some of...

Having some issues but it’s about 2-3 weeeks left until harvest maybe on my autos and I’m growing organically so I don’t want to amend again. Any thoughts? Looks like P issues but I can’t tell if it’s an excess or def.

New grower. One full harvest under my belt, and a second one soon. Problem with my veg plants that 4x blue cookies from seed 2x4 closet currently in 3 gallon fabric pots Canna Coco+Perlite Canna A+ Canna B+ Cal-mag PH ~5.8 room temp ~24 Celsius/77 Fahrenheit RH ~65 I planted these "Blue...

Hello everybody, it's my first post and I'm hoping that someone could help me . Long story short my plant had a hard life. It started as an ecperimexp from a bagseed. Firstly it was grown outdoors without good fertilizer but was doing pretty well apart from a spider mites attack that I managed...

I’m growing outdoors in Australia. Flowering is due to start in a week or 2, I have a plant in a 100Litre pot, coco and potting mix, with a little pear moss and perlite. Fed every second water like all my other plants (which are fine). Temperatures have been quite warm the last couple weeks...

So I've got three very healthy plants. The Durban Poison and Cherry Lime Haze are about 2 feet tall and the Kandy Kush is about 3 feet tall. I've recapped most of this in my other thread (https://www.rollitup.org/t/can-you-confirm-if-this-is-mag-deficiency.947387/) Here's info: Growing in...

so, my shrub thats been into the flower cycle for about a week is showing signs of a phosphorus issue. I am using Biobizz nutes with cal mag supplement but am realizing now that when I water it takes atleast 5 minutes for there to be runoff, and the runoff is minimal at best. how can i correct a...

ao here I have my jack herrer and she is just really growing slow she started off great looked healthy strong tap root, but I'd say about 3 weeks in she started yellowing on the tips of the leafed and then next thing you know the bottom leaves were almost completely dead so I cut them as you can...

I'm not too sure which one it is. I'm assuming it's all of them. 5th weeks in hydro. Sour Diesel. 300W LED (140 true w). 5 gallon bucket. Hydro with clay pebbles. I can't figure it out if it is magnesium problem due to the pictures and or potassium problem. There seems to be a lot of problems...

Hello everyone, started a few weeks ago, going worst and worst. I tried to lower the nutes, went worst; tried to feed them more then, not much of a change yet. The soil PH is 7,1, water is always 6,7. I'm using Dynamics N3 soil. Temp 20° - 29° C, RH 40 - 50%. The plants keep turning her stems...

Hey all, I'm planning on moving all my White Widows to 12/12 under an hps to start flowering in just a few days! They're all about 8 weeks old, have been topped once, are about 18" tall, and will be put into 5 gallon buckets full of holes with the same soil blend (50/50 FF Happly Frog and...

Hey guys, i need help with my 2 plants. Everyone has different ideas and im lost is this phosphorus def? But my other plants symptoms are different. I feel like giving up man. Top 3 is one plant and the other 3 is the other one. I belive its an indica and a sativa.