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Crop Nutrient Deficiencies And Organic Solutions
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Necrotic spots on leaves and thin, spindly stems
Manganese deficiency; use manganese sulfate
Slow or stunted growth and dark, dull, or blue-green leaves
Nitrogen or Phosphorus deficiency; use composted manure, blood meal, rock phosphate or bone meal
Yellowing of leaves starting with the lower leaves
Nitrogen deficiency; apply composted manure, blood meal, or fish emulsion
Stunted growth and bleaching of the youngest leaves
Molybdenum deficiency; add sodium molybdate or compost
Leaf wilt, stunted growth, and death of apical meristems
Sulfur deficiency; incorporate gypsum or elemental sulfur
New leaves pale green or yellow, old growth remains green
Nitrogen or Iron deficiency; apply fish emulsion or chelated iron
Shorter than normal internodes and smaller leaves
Phosphorus deficiency; use rock phosphate or bone meal
Young growth is yellow and deformed, curling or twisting
Zinc or Copper deficiency; use zinc sulfate or copper sulfate
Younger leaves pale green to white, wither and die early
Copper deficiency; use copper sulfate or a copper-based fungicide sparingly
Purple, red, or dark green leaf tints, especially on the undersides
Phosphorus deficiency; add rock phosphate or bone meal
Yellow spots and crinkled leaves, starting with the youngest leaves
Magnesium deficiency; apply Epsom salts or dolomite lime
Interveinal chlorosis on older leaves, poor seed production
Nickel deficiency; use nickel sulfate
Reduced or ceased growth of roots and shoots
Phosphorus or Zinc deficiency; apply rock phosphate or zinc sulfate
Loss of turgor in leaves, leaf margins become dry and scorched
Potassium deficiency; use greensand, kelp meal, or wood ash
General chlorosis, small leaf size, and poor fruit set
Zinc deficiency; apply zinc sulfate or composted poultry manure
Interveinal chlorosis primarily on younger leaves
Iron deficiency; use iron sulfate or chelated iron
Dead or rotting spots at the tips and edges of older leaves
Potassium deficiency; use greensand or kelp meal
Rosette formation, blind buds, and dieback
Boron deficiency; apply borax or compost rich in fruit and vegetable waste
Thin stems with brittle roots and pale or greenish-yellow leaves
Sulfur or Nitrogen deficiency; incorporate elemental sulfur or apply composted manure
Older leaves withering, necrosis of leaf tips
Potassium or Calcium deficiency; use kelp meal or gypsum
Distorted young leaves and poor stand establishment
Molybdenum or Copper deficiency; add sodium molybdate or copper sulfate
Plants are more susceptible to diseases and pests
General nutrient deficiency; improve overall soil health with compost and cover crops
White to light green longitudinal stripes on leaves
Magnesium or Manganese deficiency; apply Epsom salts or manganese sulfate
Corky, uneven growth at the stem bases and fruit blossom ends
Calcium deficiency; add gypsum, oyster shell lime, or eggshell
Premature dropping of fruits and flowers
Calcium or Boron deficiency; add gypsum, oyster shell lime, eggshell, or borax
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