By continuing to use the website or clicking Accept you consent to our cookies and personal data policy and confirm that you are at least 18 year old. For details please see Privacy Policy and Terms
Bottom leaves turning yellow.
Giving her nutrients 2 times, then only water 1 time. pH 6.3 with nutrients and pH 6.5 when only water.
Is it nitrogen deficiency?
Bottom leaves are turning yellow in the last couple of days with some brown spots and now it's spreading on the higher leaves.
What's going on? Is it nitrogen deficiency?
Seems like you feed plenty, but you'd have to look into ppm provided and good habits when watering -- 20% runoff to drain or waste etc each time you irrigate. WAit until top ~1" is dry before repeating process. If you do all of that, it might be a deficiency. Otherwise, i'd consider other causes like lockout (buildup) or pH issues in the substrate it self.
Check how much magnesium you provide via the labels of the products you use... ~80-100ppm or so would eliminate it as the cause and point toward lockout.
Do the same for nitrogen, but it'd be really really rare for a formula to undershoot the N-component, but i guess it's possible.
The dots and the fact it seems to start interveinally points me toward Mg-deficiency symptoms, but the cause i stick to what i say above...
investigate soil pH first. Check label ppms of Mg and N too. These things will help illuminate a precise cause before doing anything to the plant or soil.
Yes test the run off regularly, but also test the ph of water with nutes added and adjust as necessary with ph up or down before feeding. Happy growing ✌️
Yes, measure pH and EC of runoff regularly, even if you're only feeding water. If it comes back too hot, skip a feeding. If it comes back weaker than it went in, then increase nutes a bit. Ideally, you could use nutes with every feed, adjusting slightly as EC goes up and down.
Hey I measure my PH when I put the nutes in the water and because I am running a hydro setup I do check the PH run off so that I know if my roots are getting burned from being below 5.5PH.
Hope that helps
Happy growing
Gbx1000
