LaMotte SMART3 Soil Operator's Manual page 109

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ZINC
ZINCON METHOD • CODE 3667-01-SC
QUANTITY CONTENTS
30 mL *Zinc Indicator Solution
120 mL *Methyl Alcohol
10 g Sodium Ascorbate Powder
25 g *Zinc Buff er Powder
15 mL *Sodium Cyanide, 10%
30 mL *Formaldehyde Solution, 37%
1 Dilute Zinc Indicator Solution" Bottle,
w/1 pipet assembly
1 Graduated Cylinder, 10 mL, glass
1 Spoon, 0.5 g, plastic
2 Pipets, plain, plastic
1 Spoon, 0.1 g, plastic
*WARNING: Reagents marked with an * are considered to be potential health hazards.
To view or print a Safety Data Sheet (SDS) for these reagents go to www.lamotte.com.
Search for the four digit reagent code number listed on the reagent label, in the
contents list or in the test procedures. Omit any letter that follows or precedes the four
digit code number. For example, if the code is 4450WT-H, search 4450. To obtain a
printed copy, contact LaMotte by email, phone or fax.
Emergency information for all LaMotte reagents is available from Chem-Tel:
(US, 1-800-255-3924) (International, call collect, 813-248-0585).
The availability of zinc in soils decreases with an increase in soil pH. Some soils that
are limited above pH 6.0 may show a zinc defi ciency especially in well drained sandy
soils. A nutrient interaction exists between soils that have a high phosphorous level and
show a zinc defi ciency even though zinc levels were suffi cient. This interaction is due
to the preferential uptake of phosphorus instead of zinc and the possible formation
of insoluble zinc phosphates. Once zinc is applied to the soil, it is relatively immobile
because it is readily absorbed by organic matter in the soil.
Zinc is essential in promoting certain enzyme reactions in the soil and is required for
the production of chlorophyll and the formation of carbohydrates in plants.
Smart3 Soil Test Procedures 9.18
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15
10 20
5 25
0 30
CODE
*6314-G
*6319-J
6316-D
*6315-G
*6565-E
*5128-G
6321-MT-G
0416
0698
0352
0699
ZINC
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