An alternative is to plant a resistant hybrid or variety where such an option is available.
Application of N as ammonia only, allows for maximum security from loss as ammonia reacts with soil moisture to produce ammonium (NH4+), a cation which is held by a soil's exchange sites. Fall N application is not recommended unless a soil has a C.E.C. of at least 10 meq / 100 grams as a means of assuring adequate capacity to retain Fall applied ammonium.
At temperatures below 50 F (particularly at more northern latitudes where temperatures generally remain low once this threshold is passed), and in the presence of a chemical nitrification inhibitor such as N - Serve, the conversion of ammonium (NH4+) to nitrite (NO2-) (and ultimately to nitrate (NO3-) is slowed sufficiently to lessen the potential for N loss to acceptable levels.
184.72 Lbs N/Acre
-15.00 Lbs N/Acre starter at planting
169.72 Lbs N/Acre as side dressed N
(2 pts.) 65.5/0.46 = 142.4 Lbs 0-46-0/Acre
(1 seed / 7.2 in.) ( 12 in. / ft.) (17,424 ft. / acre) = 29,040 seeds/ acre
|6 - 7.2 = 1.2||1.44||Sum of squares of differences / r - 1 = 78.8 / 4 = 19.7 = S2|
|4 - 7.2 = 3.2||10.24|
|3 - 7.2 = 4.2||17.64|
|14 - 7.2 = 6.8||46.24||S = 4.4 inches|
|9 - 7.2 = 1.8||3.24|
4.4 - 2.0 = 2.4 inches of standard deviation greater than 2.
(2.4) ( 3) = 7.2 bushels per acre as the potential yield penalty.
BONUS (5 pts.)
Adjust ground speed to reach precision goal (faster generally results in less precision)
Repair or replace worn parts
Use uniformly graded seed (uniform size, shape, weight)
Properly align planter attachments (e.g. starter fertilizer coulters)
Do calibration checks periodically in the field
Manage surface residue in the row environment (e.g. trash whippers) where appropriate