Mikronutrien Sigid Hariyadi ESSENTIAL NUTRIENT Tucker MR 1999 Essential Plant Nutrients their presence in North Carolina soils and role in plant nutrition Primary Nutrient K ID: 787209
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NUTRIEN K, Ca, Mg dan Mikronutrien
Sigid Hariyadi
Slide2ESSENTIAL NUTRIENTTucker, MR. 1999. Essential Plant Nutrients: their presence in North Carolina soils and role in plant nutritionPrimary Nutrient:
K
Slide3Primary Nutrient: KFunction:
Slide4Tucker, MR. 1999. Essential Plant Nutrients: their presence in North Carolina soils and role in plant nutrition
Slide5K - potassiumThe 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
Slide6Ca - calcium
Slide7Ca - calcium
Slide8Mg - magnesium
Slide9Mg - magnesium
Slide10S - sulfur
Slide11S - sulfur
Slide12Sulfur Cycle
Slide13Sulfur Cycle
Slide14Mn - manganese
Slide15Zn - zinc
Slide16Cu - copper
Slide17B - boron
Slide18Mo - molybdenum
Slide19Fe - iron Diperlukan oleh organisme dlm jumlah yang cukup besar esensial bagi proses enzimatik dan selularmetabolisme 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 bakteriReaksi oksidasi-reduksi (redoks) dari Fe cukup berperan penting bagi berbagai tumbuhan dan hewan
Slide20Iron (Fe) CycleFerric ironFerrous ironFe3+Fe2+
Slide21Interaksi Fe-S-PPada periode ‘mixing’ air yg mengandung O2 mengendapkan feri (Fe3+)
fosfat
Periode
‘anoxic’
(
stratifikasi
)
sedimen
(
danau
eutrofik
)
melepaskan
ion
fero
(Fe
2+
), ion
fosfat
(PO
4
3-
)
dan
H
2
S
ion
sulfida
(S
2-
)
dari
dissosiasi
H
2
S
dapat
mengendapkan
fero
sulfida
(
FeS
) – proses
ini
mengeluarkan
Fe
dan
S
dari
sistem
hampir
secara
permanen
Slide22SiO3 - silica
Slide23Marine diatoms
Slide24Slide25Silica Cyclehttp://www2.plymouth.ac.uk/science/wembury/nutrient/biogeochemistry.htm#silicon
Slide26http://www.gly.uga.edu/railsback/Fundamentals/SFMGNutrientCycles06-III.jpg
Slide27Referensi:①②③
Slide28Next
Slide29