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Primary nutrients Nitrogen deficiency results in very stunted, spindly yellow plants or yellow leaves, sometimes with pink tints. There is a general yellowing of older leaves (bottom of plant). The rest of the plant is often light green. There are elongated twisted leaves on cauliflowers or other brassicas (cabbage family) growing in alkaline soil. Molybdenum deficiency is normally seen in cauliflowers and brassicas, particularly when growing in insufficiently alkaline soil.
Since most micronutrients are relatively immobile in the plant, they are not readily transferred from older leaves to younger ones. Therefore, the concentration of the nutrient tends to be lowest in younger leaves. It is in these younger leaves where the symptoms of deficiency are usually most pronounced.ince most micronutrients are relatively immobile in the plant, they are not readily transferred from older leaves to younger ones. Therefore, the concentration of the nutrient tends to be lowest in younger leaves. It is in these younger leaves where the symptoms of deficiency are usually most pronounced.