pandan
Active Member
My thinking for why it's not deficiency goes like this:
1) NPK and MG are mobile elements, which means they will be leached out of the older leaves and distributed to younger leaves- thus nitrogen, phosphorus and magnesium usually show on the older larger leaves down the bottom first.
2) The dieing, not cholorosis (yellowing) really doesn't fit the profile of the other elements to be deficient.
If you are using less fertilizer than recommended then it could mean that even though you flushed something is going wrong still in the medium and it is retaining too much nutrient.
1) NPK and MG are mobile elements, which means they will be leached out of the older leaves and distributed to younger leaves- thus nitrogen, phosphorus and magnesium usually show on the older larger leaves down the bottom first.
2) The dieing, not cholorosis (yellowing) really doesn't fit the profile of the other elements to be deficient.
If you are using less fertilizer than recommended then it could mean that even though you flushed something is going wrong still in the medium and it is retaining too much nutrient.