LaMotte AST Series Professional Soil Test Outfits - Manual (Page 34)

MANGANESE
An essential element in the enzyme system of plants, manganese plays a
role in metabolic reactions affecting germination, photosynthesis, and
other vital aspects of plant development. Yellowing and stunted growth
may indicate manganese deficiency.
Some insoluble manganese is present in all soils, and its solubility or
availability is related to the pH. Calcareous soils, or soils which have
been heavily limed, may be deficient in manganese, which can be
corrected by applying manganese sulfate or another soluble manganese
salt. Highly acid soils may have extremely high, even toxic, levels of
manganese, which can be lowered by applying lime.
Since available manganese may be leached from the soil, or may be
altered to less available forms by oxidation, tests should be performed
just before planting and during plant growth. A positive test reading,
even a very low reading, generally indicates sufficient available
manganese to meet plant requirements. A high test reading is
undesirable and indicates the need for lime.
Periodate oxidizes soluable manganous compounds to form
permanganate.
QUANTITY CONTENTS CODE
10 g Manganese Buffer Reagent 6310-D
30 mL *Manganese Periodate Reagent *6311-E
1 Spot Plate 0159
1 Pipet, transfer, plastic 0364
2 Spoons, 0.05 g 0696
1 Manganese in Soil Color Chart 1307-01
*WARNING: Reagents marked with an * are considered to be potential health
hazards. To view or print a Material Safety Data Sheet (MSDS) for these
reagents go to www.lamotte.com. To obtain a printed copy, contact LaMotte by
e-mail, phone or fax.
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