LaMotte SMART 2 Electronic Soil Lab - Manual (Page 65)

MANGANESE
PERIODATE METHOD CODE 3669-SC
QUANTITY CONTENTS CODE
10 g Manganese Buffer Reagent 6310-D
15 g *Manganese Periodate Reagent *6311-E
1 Spoon, 0.1 g 0699
1 Spoon, 0.15 g 0727
*WARNING: Reagents marked with a * are considered to be potential health hazards. To view
or print a Material Safety Data Sheet (MSDS) for these reagents see MSDS CD or
www.lamotte.com. To obtain a printed copy, contact LaMotte by e-mail, phone or fax.
The amount of manganese available to the plant is dependant upon the soil
pH, the quantity of organic matter present, and the degree of aeration.
Manganese deficiency is most likely to occur in neutral or alkaline soils because
it is less soluble at elevated pH levels. In extremely acid soils, where manganese
is more soluble, toxic levels may exist which may reduce crop yields. In slightly
acid sandy soils, manganese may leach past the root zone and not be able for
utilization by the plant. Also, it is believed that manganese may form insoluble
organic complexes in some soils that have high humus content. All of the
factors contribute to the availability of this essential element. Only soil or
tissue tests can determine whether deficient or toxic levels of manganese exist.
Although manganese is known to play an important role in many of the
metabolic processes in the plant, little is known about its function other than it
is required in some enzyme reactions and is required for the formation of
chlorophyll in the plant.
RANGE: 0.00-75.00 ppm Manganese
METHOD: Periodate method
INTERFERENCES: Reducing substances capable of reacting with
periodate or permanganate must be eliminated.
Chlorine in small amounts can be oxidized by
periodate.
SMART2 SOIL MANUAL 1.07 65