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Crop Code No. 029

 

 

 

 

 

Small Grain

 

 Soil Groups 1, 2, 3, 4 or 6

 

 

 

Desired pH 6.0-6.5

Phosphorus

Potassium

 

Low

Medium

Sufficient

High

Excessive

 

pounds of N-P2O5-K2O per acre

Low

90-80-80

90-80-60

90-80-40

90-80-0

90-80-0

Medium

90-40-80

90-40-60

90-40-40

90-40-0

90-40-0

Sufficient

90-20-80

90-20-60

90-20-40

90-20-0

90-20-0

High

90-  0-80

90-  0-60

90-  0-40

90-  0-0

90-  0-0

Excessive

90-  0-80

90-  0-60

90-  0-40

90-  0-0

90-  0-0


COMMENTS
(1, 4, 5, 6, 7, 8, 9, 33, 35, 650, 651, 653)

33  Reduce nitrogen fertilizer rate by 20 lbs nitrogen per acre for Piedmont soils. (Soil Code 4).

35  When not grazed, apply 30 lbs nitrogen per acre and recommended rate of phosphate and potash at planting.  Apply the balance of nitrogen as a top-dress in February.  Depending
on soil type and residual nitrogen levels, optimal yield response typically occurs at 90 lbs per acre for dryland wheat and 120 lbs per acre for irrigated wheat.  When grazed, apply 60 lbs nitrogen per acre in the fall at planting and 60 lbs nitrogen per acre in February.  Increase nitrogen rate by 80 to 100 lbs nitrogen per acre for above normal stocking rates.

651  The soil test boron is low, however, this is not a boron sensitive crop, therefore no boron is recommended.  (When soil test boron is low)

653  The soil test zinc is low, however, this is not a zinc sensitive crop, therefore no zinc is recommended.  (When soil test zinc is low)