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NUTRIEN K, Ca , Mg dan Mikronutrien

NUTRIEN K, Ca , Mg dan Mikronutrien. Sigid Hariyadi. Primary Nutrient: K. ESSENTIAL NUTRIENT. Tucker, MR. 1999. Essential Plant Nutrients : their presence in North Carolina soils and role in plant nutrition. Primary Nutrient: K. Function:.

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NUTRIEN K, Ca , Mg dan Mikronutrien

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  1. NUTRIENK, Ca, Mg danMikronutrien Sigid Hariyadi

  2. Primary Nutrient: K ESSENTIAL NUTRIENT Tucker, MR. 1999. Essential Plant Nutrients: their presence in North Carolina soils and role in plant nutrition

  3. Primary Nutrient: K Function:

  4. Tucker, MR. 1999. Essential Plant Nutrients: their presence in North Carolina soils and role in plant nutrition

  5. K - potassium The higher concentrations are found in the clayey soils of the piedmont and mountain regions. High potassium is also found in areas where animal and poultry wastes have been applied. Tucker, MR. 1999. Essential Plant Nutrients: their presence in North Carolina soils and role in plant nutrition

  6. Ca- calcium

  7. Ca- calcium

  8. Mg- magnesium

  9. Mg- magnesium

  10. S - sulfur

  11. S - sulfur

  12. Sulfur Cycle

  13. Sulfur Cycle

  14. Mn- manganese

  15. Zn- zinc

  16. Cu- copper

  17. B - boron

  18. Mo- molybdenum

  19. Fe- iron • Diperlukan oleh organisme dlm jumlah yang cukup besar • esensial bagi proses enzimatik dan selular • metabolisme oksidatif dalam semua organisme dan dalam proses fotosintesis pada tumbuhan melibatkan cytochrome yang mengandung Fe • Fe dibutuhkan dalam haemoglobin darah • Fe berperan penting dlm enzim nitrogenase pada tumbuhan tingkat rendah dan pada bakteri • Reaksi oksidasi-reduksi (redoks) dari Fe cukup berperan penting bagi berbagai tumbuhan dan hewan

  20. Iron (Fe) Cycle Fe2+ Fe3+ Ferric iron Ferrous iron

  21. Interaksi Fe-S-P Padaperiode ‘mixing’  air ygmengandung O2mengendapkanferi (Fe3+) fosfat Periode ‘anoxic’ (stratifikasi) sedimen (danaueutrofik) melepaskan ion fero (Fe2+), ion fosfat (PO43-) dan H2S ion sulfida (S2-) daridissosiasi H2S dapatmengendapkanferosulfida (FeS) – proses inimengeluarkan Fe dan S darisistemhampirsecarapermanen

  22. SiO3- silica

  23. Marine diatoms

  24. Silica Cycle http://www2.plymouth.ac.uk/science/wembury/nutrient/biogeochemistry.htm#silicon

  25. http://www.gly.uga.edu/railsback/Fundamentals/SFMGNutrientCycles06-III.jpghttp://www.gly.uga.edu/railsback/Fundamentals/SFMGNutrientCycles06-III.jpg

  26. Referensi: ① ② ③

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