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Soil Indexes

The ADAS soil analysis indexes and lab measurements are set out below. Most other UK laboratories use the same techniques and interprestation scales.

Potash Index Lab Range [mg/l]
Zero 0-60
One 61-120
Two 121-240
Three 241-400
Four 401-600
Five 601-900
Six 901-1500
Seven 1501-2400
Eight 2401-3600
Nine 3601-
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