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Nitrogen deficiency causes pale, yellowish-green foliage and stunted plants. Because Nitrogen is a mobile nutrient in the plant, symptoms appear first on the older leaves, and then develop on younger leaves as conditions become acute. Nitrogen deficient plants mature early with significantly reduced yield and quality.
Nitrogen Deficiency: The yellow wheat shows where a lighter rate of Nitrogen was applied.
Nitrogen Deficiency: Pale green on the youngest leaves, yellow middle leaves, and brown older leaves.