Im guessing nitrogen deficiency?


#1

this is starting low and working up, ph in soil was 7.0 so i was flushing with 6.2ph but it started before i flushed.
outdoors, fox farm and dirt, plant is flowering now, i dont have tds meter, but its ordered. i try keeping
water about 6.5 ph. its been really hot here in the desert 105 f to 70 at night. so they need water every other day.
thanks tom


#2

It is probably not a nitrogen deficiency. More likely a nutrient salt toxicity since the pH sounds like it isn’t too far from ideal for soil.


#3

Also, usually it is boron, copper, zinc and iron, not necessarily in any particular order, and maybe manganese, that are the deficiencies to look out for – caused by high pH in soils.


#4

So how do I correct the nut salt toxicity. Flush with water?


#5

Yes, flushing with properly pH’d water will work, but without reading the run-off’s EC/TDS, you won’t know how bad it was or how much you really need to flush to get the EC/TDS back down to a reasonable level.

Nonetheless, flushing with 3 times the volume of water to the volume of soil will probably help.