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Potatoes lack fattening symptoms
Nitrogen deficiency: Plants grow slowly, with the entire plant appearing pale green or yellow-green. The older leaves at the edges turn pale yellow and eventually dry up. This deficiency often affects overall growth and can lead to weak, stunted development.
Phosphorus deficiency: Leaves, petioles, and leaf margins tend to curl upward. The leaves are smaller in size, dark green in color, and the plant becomes short or thin. Early leaf drop may occur, and in some cases, rust-brown spots or sores can appear inside the tubers, indicating internal damage.
Potassium deficiency: Growth slows down, and the internodes become shorter, causing the plant to bend or droop. Leaves curl, shrink, and their veins become sunken. The leaf tips and edges change from green to a darker shade, sometimes even turning purple. Several lower leaves may wither, but the center of the plant remains healthy. Potassium-deficient plants are more susceptible to bacterial infections, and the inside of the tubers may appear gray.
Calcium deficiency: Young leaves become small, light green, and their edges roll inward before dying. This condition often affects new growth, leading to deformed or necrotic tissues in the youngest parts of the plant.
Magnesium deficiency: Chlorosis begins at the base of the older leaves, spreading along the veins. Dead tissue between the veins turns brown, and the leaves curl upward. The veins become thick, dark, and slightly raised, eventually leading to complete leaf death if left untreated.
Boron deficiency: The growing tip dies, while lateral buds grow rapidly, causing the plant to take on a bushy, plexiform shape. Leaves thicken, their edges roll inward, and starch accumulates in the tissues. Prolonged boron deficiency results in short, thick roots that turn brown and die, along with short, misshapen tubers. The vascular bundles inside the tubers become brown, and the outer skin cracks, making the plant more vulnerable to disease.
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