Nitrogen deficiency is an abiotic disorder causing growth inhibition. Deficient plants are shorter and have thinner stems and smaller leaves. The whole plant often becomes pale green or yellow-green due to inhibited chlorophyll synthesis. Leaf stalks of smaller leaves can also turn purple and leaves can eventually wither and fall off. There can also be vertical purple stripes on the stem.
The chlorophyll content of the plant leaves is reduced which results in pale yellow color (chlorosis). Older leaves turn completely yellow. Flowering, fruitings, protein and starch contents are reduced. Reduction in protein results in stunted growth and dormant lateral buds.
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