SIGNS OF MICRONUTRIENT DEFICIENCY

BORON (B)
Terminal buds die, witches’ brooms form.

CALCIUM (Ca)
New leaves (top of plant) are distorted or irregularly shaped. Causes blossom-end rot.

COPPER (Cu)
Leaves are dark green, plant is stunted.

IRON (Fe)
Yellowing occurs between the veins of young leaves.

MAGANESE (Mn)
Yellowing occurs between the veins of young leaves. Pattern is not as distinct as with iron. Palm fronds are stunted and deformed, called “frizzle top.” Reduction in size of plant parts (leaves, shoots, fruit) generally. Dead spots or patches.

ZINC (Zn)
Terminal leaves may be rosetted, and yellowing occurs between the veins of the new leaves.

MOLYBDENUM (Mo)
General yellowing of older leaves (bottom of plant). The rest of the plant is often light green.

SULFUR (S)
Younger leaves turn yellow first, sometimes followed by older leaves.

MAGNESIUM (Mg)
Older leaves turn yellow at edge leaving a green arrowhead shape in the center of the leaf.

Plants also require carbon, hydrogen, and oxygen, which are extracted from air and water to make up the bulk of plant weight.


PUBLICATION AZ1106 University or Arizona
http://www.eldoradochemical.com/fertiliz1.htm