Question

deficiency of which of the following causes willing of leaves
a) calcium
b) nitrogen
c) magnesium
d) iron​

Answer 1

Answer:

MAGNESIUM

MAGNESIUM Explanation:

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Answer 2

Symptoms of Plant Nutrient Deficiencies
Before you can address a deficiency, you’ve got to be able to figure out which nutrient your plant needs. So here are a few ways a plant may show you it’s missing something important:

Boron – Young leaves turn light green and may be disfigured.
Calcium – Leaves are disfigured and may wilt or show signs of necrosis (i.e., death of plant tissue).
Copper – Leaves may be limp and/or curled.
Iron – New leaves turn a pale, yellow color between green leaf veins (this is known as interveinal chlorosis).
Magnesium – Leaves show spotting and yellowing between green leaf veins. Outer edges of leaves may pucker or curl.
Manganese – Younger leaves turn yellow between veins (giving them a net-like look) and may develop dead spots.
Molybdenum – Older leaves yellow. Remaining leaves turn light green. All leaves may become distorted and narrow.
Nitrogen – Older leaves and veins turn a pale, yellow color. Other leaves turn light green and stay smaller than normal.
Phosphorus – Leaves looks stunted and turn dark green or even a deep purple color (almost black for some plants). Leaf tips may look burnt.
Potassium – Older, lower leaves show marginal necrosis, even looking scorched around the edges. Leaves also yellow on edges and between veins.
Sulfur – New leaves yellow and leaf veins lighten while older leaves remain green. (May be confused for a nitrogen deficiency.)
Zinc – New leaves yellow and may develop necrosis between veins.