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Mineral Nutrition Studied by soil-free culture in nutrient solutions:

Mineral Nutrition Studied by soil-free culture in nutrient solutions:. Mineral Nutrition Soil-free culture Sand culture Hydroponics: immerse roots in nutrient solution Slanted film maintains [nutrients] & O 2 Aeroponics sprays nutrient solution on roots. Mineral Nutrition Macronutrients

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Mineral Nutrition Studied by soil-free culture in nutrient solutions:

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  1. Mineral Nutrition Studied by soil-free culture in nutrient solutions:

  2. Mineral Nutrition • Soil-free culture • Sand culture • Hydroponics: immerse roots in nutrient solution • Slanted film maintains [nutrients] &O2 • Aeroponics spraysnutrient solution on roots

  3. Mineral Nutrition • Macronutrients • CHOPKNS

  4. Mineral Nutrition • Macronutrients • CHOPKNS • CHOPNS make biopolymers

  5. Mineral Nutrition • Macronutrients • CHOPNS make biopolymers • N deficiency • mobile in plant, so shows first in old leaves

  6. Mineral Nutrition • Macronutrients • CHOPNS make biopolymers • P deficiency • mobile in plant, so shows first in old leaves

  7. Mineral Nutrition • Macronutrients • CHOPNS make biopolymers • S deficiency • mobile in plant, so shows first in old leaves

  8. Mineral Nutrition • Macronutrients • CHOPKNS • CHOPNS make biopolymers • K makes turgor, enzyme cofactor • mobile in plant, so shows first in old leaves

  9. Mineral Nutrition • Macronutrients • CHOPKNS • Ca: signaling, middle lamella, cofactor • immobile in plant, so shows first in young leaves

  10. Mineral Nutrition • Macronutrients • Ca: signaling, middle lamella, cofactor • Fe: cofactor • immobile in plant, so shows first in young leaves

  11. Mineral Nutrition • Macronutrients • Ca: signaling, middle lamella, cofactor • Fe: cofactor • Mg: cofactor • mobile in plant, so shows first in old leaves

  12. Mineral Nutrition • Macronutrients: CHOPKNSCaFeMg • Ca: signaling, middle lamella, cofactor • Fe: cofactor • Mg: cofactor • mobile in plant, so shows first in old leaves

  13. Mineral Nutrition • Macronutrients: CHOPKNSCaFeMgBNaCl • Ca: signaling, middle lamella, cofactor • Fe: cofactor • Mg: cofactor • mobile in plant, so shows first in old leaves

  14. Mineral Nutrition • Micronutrients: BNaCl • B: cell elongation. NA metabolism • immobile in plant, so shows first in young leaves

  15. Mineral Nutrition • Micronutrients: BNaCl • B: cell elongation. NA metabolism • Na: PEP regeneration in C4, K substitute • mobile in plant, so shows first in old leaves

  16. Mineral Nutrition • Micronutrients: BNaCl • B: cell elongation. NA metabolism • Na: PEP regenerationin C4, K substitute • Cl: water-splitting, osmotic balance • mobile in plant, so shows first in old leaves

  17. Mineral Nutrition • Micronutrients: BNaCl others include Cu, Zn, Mn • B: cell elongation. NA metabolism • Na: PEP regeneration, K substitute • Cl: water-splitting, osmotic balance • Cu: cofactor • immobile in plant, so shows first in young leaves

  18. Mineral Nutrition • Commercial fertilizers mainly supply NPK

  19. Plant food • 2.6% ammoniacal nitrogen • 4.4% nitrate nitrogen • 9% phosphorus • 5% potassium • calcium (2%) • magnesium (0.5%) • sulfur (0.05%) • boron (0.02%) • chlorine (0.1%) • cobalt (0.0015%) • copper (0.05%) • iron (0.1%) • manganese (0.05%) • molybdenum (0.0009%) • nickel (0.0001%) • sodium (0.10%) • zinc (0.05%)

  20. Mineral Nutrition • Soil nutrients • Amounts & availability vary • PSU extension Text

  21. Mineral Nutrition • Soil nutrients • Amounts & availabilityvary • Many are immobile, eg P, Fe

  22. Mineral Nutrition • Soil nutrients • Amounts & availability vary • Many are immobile, eg P, Fe • Mobile nutrients come with soil H2O

  23. Mineral Nutrition • Soil nutrients • Amounts & availability vary • Many are immobile, eg P, Fe • Mobile nutrients come with soil H2O • Immobiles must be “mined” • Root hairs get close

  24. Mineral Nutrition • Immobile nutrients must be “mined” • Root hairs get close • Mycorrhizae get closer

  25. Mineral Nutrition • Immobile nutrients must be mined • Root hairs get close • Mycorrhizae get closer Solubility varies w pH

  26. Mineral Nutrition • Solubility varies w pH • 5.5 is best compromise

  27. Mineral Nutrition • Solubility varies w pH • 5.5 is best compromise • Plants alter pH @ roots to • aid uptake

  28. Mineral Nutrition • Nutrients in soil • Plants alter pH @ roots toaid uptake • Also use symbionts • Mycorrhizal fungi help: especially with P

  29. Mineral Nutrition • Also use symbionts • Mycorrhizal fungi help: especially with P • P travels poorly: fungal hyphae are longer & thinner

  30. Mineral Nutrition • Also use symbionts • Mycorrhizal fungi help: especially with P • P travels poorly: fungal hyphae are longer & thinner • Fungi give plants nutrients

  31. Mineral Nutrition • Also use symbionts • Mycorrhizal fungi help: especially with P • P travels poorly: fungal hyphae are longer & thinner • Fungi give plants nutrients • Plants feed them sugar

  32. Mineral Nutrition • Also use symbionts • Mycorrhizal fungi help: especially with P • P travels poorly: fungal hyphae are longer & thinner • Fungi give plants nutrients • Plants feed them sugar • Ectomycorrhizae surround root: only trees, esp. conifers

  33. Mineral Nutrition • Ectomycorrhizae surround root: only trees, esp. conifers • release nutrients into apoplast to be taken up by roots

  34. Mineral Nutrition • Ectomycorrhizae surround root: trees • release nutrients into apoplast to be taken up by roots • Endomycorrhizae invade root cells: Vesicular/Arbuscular • Most angiosperms, especially in nutrient-poor soils

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