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Texas
AgriLife Extension Soil, Water and Forage Testing Laboratory Soil Fertility
Recommendation Calculator
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Units
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Test Values*
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Critical Value
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Recs
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Units
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Nitrate-N
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ppm
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-
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Mehlich III Phosphorus
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ppm
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Mehlich III Potassium
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ppm
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Enter your soil test data in the red rectangles
above.
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Select the drop down-menu
from the following crop categories (select only one)
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Lawn or Gardens
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Forages
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Oil Crops
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Vegetable, Fruit and Nut Crops
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Rowcrops and Grains
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Landscape
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Fiber Crops
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Tree Production
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*Insure
"Test Values" entered were measured using methods used by the Texas
AgriLife Extension Soil, Water and Forage Testing Laboratory. Data acquired by other methods are not
applicable.
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