1. Mineral Nutrient Deficiencies and Toxicities Jim Owen, Jr. North Willamette Research and Extension Center

3. Mobile Nutrient – at base -N

4. Immobile Nutrient – at top

5. Partially Mobile – entire plant

9. Nitrogen deficiency uniform chlorosis of lower leaves -N Azalea

10. Nitrogen deficiency stunting 0 5 10 20 40 60 grams of N applied in poly-coated urea Maple

11. Uniform Chlorosis Followed by Necrosis Nitrogen Deficiency Tobacco here #2

12. N Deficiency Early Flowering, Severe Stunting

13. Nitrogen Deficiency Red Pigmentation on Older Leaves Blueberry Marigold

15. P Deficiency: deep green Chamaecyparis Impatiens

16. Phosphate vs.Compactness P 2 O 5 as a % of N in post-plant fertilizer P 2 O 5 = 50% of N 15% 7.5% 0% (e.g. 20-10-20) (13-2-13)

17. Phosphate vs.Compactness -P +P Thuja

18. Phosphorus Deficiency longer but fewer roots

19. lower leaf chlorosis Phosphorus Deficiency

20. lower leaf necrosis Phosphorus Deficiency

23. Ammonium Toxicity Increasing Urea Rate (0 to 60 g)

24. Older plant – pot mum Ammonium Toxicity lower leaf chlorosis & necrosis root tip death

26. Magnesium - Mobile chlorosis (Maple) (Viburnum) (Chamaecyparis )

27. Mg Deficiency Interveinal Chlorosis Older Leaves Dogwood Chrysanthemum

28. Necrosis grape leaves Magnesium - Mobile

29. Red Older Foliage Blueberry Magnesium - Mobile

31. Potassium – Mobile Necrosis (Ginko) (Viburnum) (Maple)

32. Necrotic Spotting poinsettia pepper K Deficiency

35. Chlorosis and Necrosis of Young Leaves Chlorosis of Stem and Leaves, Flowers Faded and Necrotic nemesia Sulfur - Partially Mobile (symptoms originate throughout entire plant)

38. Immobile Nutrient – Fe vs Mn (Rose)

39. Immobile Nutrient – Fe vs Mn Maple

40. Immobile Nutrient – Fe vs Mn tan flecking tobacco

42. Immobile Nutrient – Calcium Viburnum Azalea Ca caused chlorosis

43. Immobile Nutrient – Calcium Ca caused meristem distortion and necrosis

44. Immobile Nutrient – Boron B caused meristem distortion

45. Immobile Nutrient – Boron B induced Crinkling of young leaves due to patches of cells not developing in the leaf blade.

46. Immobile Nutrient – Boron Roots shorter, fewer, thicker, and highly branched.

47. Nickel – Mouse ear Birch

49. Immobile Nutrient – Copper Sudden death of young leaves. Azalea

50. Immobile Nutrient – Zinc Interveinal necrosis Beet

51. Immobile Nutrient – Zinc Beet Young Leaf Chlorosis Recently Mature Leaf Necrosis

52. Additional Toxicities

53. Salt / Sodium Toxicity necrosis Grape

54. Salt / Chloride Toxicity defoliation Grape

55. Fluoride Toxicity necrosis Grape

57. North Willamette Research and Extension Center http://oregonstate.edu/dept/NWREC/