The sufficient range for is between and percent.
• Component of vitamins, amino acids, energy systems
• Increases protein content
• Mobile and moves to root surfaces for absorption
Nitrogen deficient corn: yellow chlorosis and brown necrosis on old leaves.
Source: International Plant Nutrition Institute (IPNI)
Nitrogen deficient soybeans: uniform yellowing on the lower leaves; stunted growth and leaf drying.
Source: International Plant Nutrition Institute (IPNI)
The sufficient range for is between and percent.
• Captures and converts the sun’s energy
• Stimulates root development
• Increases stalk and stern strength
• Improves flower formation and seed production
Phosphorus deficient corn: discoloration on leaves advancing along the leaf margins.
Source: International Plant Nutrition Institute (IPNI)
Phosphorus deficient soybeans: plants are smaller and have small leaflets; slow and stunted growth.
Source: International Plant Nutrition Institute (IPNI)
The sufficient range for is between and percent.
• Enhances enzyme actions aiding in photosynthesis
• Produces grains rich in starch
• Increases root growth and improves drought tolerance
• Reduces water loss and wilting
Potassium deficient corn: chlorosis along the leaf margins and tips of older leaves; spreads from tip to base then turns to necrosis.
Source: International Plant Nutrition Institute (IPNI)
Potassium deficient soybeans: yellowing of leaf margins on older leaves; leaf edges may become brown and necrotic.
Source: International Plant Nutrition Institute (IPNI)
The sufficient range for is between and percent.
• Helps form cell walls to strengthen the plant
• Stimulates root and leaf development
• Affects uptake and activity of other nutrients
Calcium deficient corn: young leaves that remain rolled up and joined together at the tips.
Source: International Plant Nutrition Institute (IPNI)
Calcium deficient soybeans: young leave remain rolled up.
Source: International Plant Nutrition Institute (IPNI)
The sufficient range for is between and percent.
• Acts as a phosphorus carrier
• Improves root growth
• Required for better root formation and thus better nutrient/water efficiency
Magnesium deficient corn: lower leaves show reddening or browning of leaf tips and margins.
Source: International Plant Nutrition Institute (IPNI)
Magnesium deficient soybeans: pale green leaves with yellow mottling between veins; leaves may appear to be speckled bronze.
Source: International Plant Nutrition Institute (IPNI)
The sufficient range for is between and percent.
• Appears in every living cell
• Important in photosynthesis and winter crop hardiness
• Required for synthesis of certain amino acids and proteins
• Necessary for efficient nitrogen fixation in legumes
Sulfur deficient corn: pale green upper leaves and dark green lower leaves.
Source: International Plant Nutrition Institute (IPNI)
Sulfur deficient soybeans: stunted plants with pale green color; chlorosis may be more apparent on upper leaves.
Source: International Plant Nutrition Institute (IPNI)
The sufficient range for is between and ppm.
• Improves seed set under stressful conditions
• Important cell wall component
Boron deficient corn: brittle leaves with small dead spots; reduced tassels and ear shoots.
Source: International Plant Nutrition Institute (IPNI)
Boron deficient soybeans: shortened internodes; yellowing or reddening of upper leaves.
Source: International Plant Nutrition Institute (IPNI)
The sufficient range for is between and ppm.
• Most immobile of the micronutrients
• Necessary to chlorophyll formation
• Catalyzes several other plant reactions
Copper deficient corn: youngest leaves are yellow and tips may die.
Source: International Plant Nutrition Institute (IPNI)
Source: International Plant Nutrition Institute (IPNI)
The sufficient range for is between and ppm.
• Acts as an oxygen carrier in nodules of legume roots
• Catalyst to chlorophyll formation
Iron deficient corn: prominent green veins fade and become light green to pale yellow.
Source: International Plant Nutrition Institute (IPNI)
Iron deficient soybeans: interveinal chlorosis on upper leaves; completely yellow leaves indicate sever deficiency.
Source: International Plant Nutrition Institute (IPNI)
The sufficient range for is between and ppm.
• Plays vital role in photosynthesis by aiding in chlorophyll synthesis
• Soybeans and wheat require higher amounts of Mn
Manganese deficient corn: pale green young leaves with pale yellow interveinal chlorosis.
Source: International Plant Nutrition Institute (IPNI)
Manganese deficient soybeans: stunted plants with interveinal chlorosis.
Source: International Plant Nutrition Institute (IPNI)
The sufficient range for is between and ppm.
• Availability decreases as soil pH increases
• Aids in synthesis of plant-growth substances and enzyme systems
• Essential for promoting certain metabolic reactions
Zinc deficient corn: white to yellow bands begin at the base of the leaf; the midrib and leaf margins remain green.
Source: International Plant Nutrition Institute (IPNI)
Zinc deficient soybeans: yellow and possibly bronze coloration of leaf edges and tips.
Source: International Plant Nutrition Institute (IPNI)