Why are my leaves turning yellow?
Magnesium Deficiency
By far the most common nutrient
deficiency in hydroponics is magnesium deficiency. Magnesium is
a mobile element, which means if
a magnesium deficiency starts to
develop, the plant can pull the magnesium out of the lower leaves and
transport it to the top leaves where it
is needed the most. Since magnesium
is the central element in chlorophyll,
the bottom leaves develop interveinal
chlorosis—the veins would remain
green, but the tissue between the
veins would begin to turn yellow.
Plants need plenty of magnesium
when their energy requirements are
highest, and sometimes during times
of rapid vegetative growth or heavy
fruit production, plants can’t keep up
with demand for magnesium. In this
case, adding a little cal-mag to the
reservoir, or spraying a little magnesium sulfate on the leaves will green
up the plants in a hurry.
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Maximum Yield USA | February 2014
March 2014
Plants
need plenty of magnesium when
their energy requirements are
highest, and sometimes during
times of rapid vegetative growth or
heavy fruit production, plants can’t
keep up with demand
for magnesium.”
Magnesium is a mobile element, which means if a magnesium deficiency starts to develop, the plant can
pull the magnesium out of the lower leaves and transport it to the top leaves where it is needed the most.