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Tropical Crop Nutrient Deficiencies
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Flashcards
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Yellowing between the veins of new leaves
Iron Deficiency
New growth is twisted or distorted
Zinc Deficiency
Older leaves turning yellow while veins remain green
Magnesium Deficiency
Stunted growth with dark green color
Nitrogen Deficiency
Purple, red, or blue tints on the leaves
Phosphorus Deficiency
Leaves become cupped or rolled and appear wilted
Potassium Deficiency
Whitish or pinkish discoloration at the base of the leaves
Sulfur Deficiency
Dead spots or blotches on older leaf margins
Calcium Deficiency
New leaves are small and pale green to yellow
Manganese Deficiency
General yellowing of the whole plant starting with the older leaves
Nitrogen Deficiency
Chlorotic spotting of leaves and delayed maturity
Selenium Deficiency
Leaves exhibit a silvery sheen followed by bronzing or necrosis
Nickel Deficiency
Leaves develop a blue-green hue before turning a reddish purple
Phosphorus Deficiency
Leaves are light green to yellow, starting with the youngest leaves
Sulfur Deficiency
Excessively dark foliage and stunting of plants
Copper Deficiency
Delayed flowering with few and small fruits
Cobalt Deficiency
Top leaves are distorted with short, very upright growth
Boron Deficiency
Young leaves are wilted and exhibit a bright yellow color
Molybdenum Deficiency
Slow growth and pale, sickly appearance
Potassium Deficiency
Interveinal chlorosis on older leaves
Magnesium Deficiency
Nitrogen-fixation is reduced, leading to pale green or yellowish older leaves
Cobalt Deficiency
Poor growth and yield, coupled with general chlorosis
Selenium Deficiency
Brown spots on the leaves and fruit
Boron Deficiency
Interveinal chlorosis, necrotic spots on mature leaves
Manganese Deficiency
Production of gum in the veins, collapse of stems and death of growing tips
Copper Deficiency
Brittle stems and petioles, especially in the youngest tissue
Silicon Deficiency
New growth with short internodes and small, narrow leaves
Zinc Deficiency
Leaf tips and margins appear scorched and die off
Calcium Deficiency
Crops experience wilting under water stress faster than usual
Silicon Deficiency
Leaves are pale with interveinal mottling and marginal chlorosis
Molybdenum Deficiency
Young leaves show interveinal chlorosis, while older leaves turn a deep green or blue-green
Nickel Deficiency
Uniform chlorosis of the young leaves
Iron Deficiency
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