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Dry Beans

Dry beans account for about 1.6 million acres of crops grown in the United States. Dry beans are grown for human consumption and are rich in protein, phosphorus, fiber and various nutrients. The most common types of dry beans grown are pinto, navy, and black beans.

The most common nutrient deficiencies in dry beans are nitrogen, phosphorus, and potassium. To reach maturity and maximize yield, dry beans require various nutrients throughout the growing season.  

Nutrient Deficiencies

Nitrogren
Nitrogen is mobile in the plant. Symptoms will appear as chlorosis first on lower leaves.
Phosphorus:
Phosphorus is responsible for capturing and converting the sun’s energy. Plants deficient in phosphorus are smaller with slow and stunted growth.
Potassium:
Potassium is mobile in the plant. Symptoms of yellowing leaf margins will appear in the old leaves and stunted, slow growth of the plant.
Sulfur:
Sulfur appears in every living cell and is important for photosynthesis. Plants deficient in sulfur will be stunted and pale green in color.
Manganese:
Manganese is immobile in the plant. Symptoms of interveinal yellowing will occur on the youngest leaves first, as well as stunting of the plant with shortened internodes. Conditions that favor manganese deficiency would be high organic matter soils.
Zinc:
The availability of zinc decreases as soil pH increases. Zinc aids in the synthesis of plant-growth substances and enzyme systems. Symptoms appear as yellow or bronze coloration of leaf edges and tips.

Additional Resources

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