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Wheat Plant Tissue Interpreter
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Wheat Plant Tissue Interpreter
is designed to help with the interpretation of crop nutrition status according to its
nutrient content of various plant parts and its phenological growth stage. Most currently available systems have a
single critical range for a wide window of growth stages which can introduce error particularly through growth stages 20 - 37 when crop
drymatter is rapidly increasing therby diluting nutient content. The
algorithms relating plant part,
decimal growth stage and
nutrient status have been derived from a wide range of data sources
including Reuter and Robinson (1997), Weier and Creswell (1994) and a range
of other sources publised since the 2000.
If you like what you see, let us know. A more complete version containinig all 16 essential nutrients is
avaible by contacting
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Back Paddock Support
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Instructions
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1. Input the Zadoks growth stage
number for the majority of the plants in the crop. The calculator will then
provide a description of the Zadoks growth stage and a Feekes scale
equivalent.
2. Enter the laboratory values in the appropriate "Lab Input
Value" column for either
"Whole Shoots" or "YEBS (Youngest Expanded
Blades). The critical ranges and
status will then be displayed in to the right of the Lab value.
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Definitions
Growth stage range
indicates the growth stages that were
included in the calibation. Interpretion for individual elements may be
associated with increase error for growth stages outside those defined due to
interpolation and extrpolation outside the measured data set used in the
calibration.
Less than optimum is
where the laboratory value is in the
range critical value and critical
value minus the standard error of the calibration line.
n= number of
observation obtained from references used to build relationships.
Sufficiency Index =
Relative % actual of critical value
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Disclaimer
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The evaluation and
recommendation reports provided here are a guide only, and depend on
representative samples being analysed. Additionally environmental and
managerial factors influence performannce therefore as suppliers of this
decision support we do not accept any liability whatsoever arising from the
application of recommendations, for any damage, loss or injury of any nature
and the user takes these evaluations and recommendations on these terms. This
recommendation is made in good faith, based on the best technical information
available.
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© Back Paddock Company 2015
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