Section 4 Table of Contents

Table 1.4-4. Nitrogen recommendation worksheet to be used for making PSNT-based sidedress N recommendations in Pennsylvania.

Warning! Warning!

If the soil nitrate level is ≥ 21 ppm, the N recommendation is zero; otherwise, continue the calculations below:

Soil nitrate-N ppm (1)

Yield factor = × 1.1 = __________ (2)
(Expected yield)
History factor = + + = __________ (3)
Coefficients → Manure applied
since last
harvest
None = 0.75
Any = 3.5		 Manure applied
in three
years prior
to the last
harvest
None = 0
Any = 1.75		 Previous crop
Corn = 0
Soybeans = 1
Forage legume=3.5
Other = 0

Recommendation = Yield factor (2) − (History factor (3) × PSNT NO3-N (1))