Corn Yield Response to Starter Fertilizer
Dr. Barney Gordon
Department of Agronomy, KSU – Manhattan, KS
Table 1: Effects of N concentration on starter response in irrigated corn
| Lb/A N-P3O5-K20 | 2-year Avg bu/A |
| Control, no starter | 159 |
| 5-15-5 | 187 |
| 15-15-5 | 192 |
| 30-15-5 | 210 |
| 45-15-5 | 210 |
| 60-15-5 | 209 |
Corn Yield Response to K in NPK in Starter Fertilizer
Dr. Barney Gordon – Department of Agronomy, KSU – Manhattan, KS
Soil conditions: Starter fertilizer combination:
pH = 6.2 28% UAN
OM = 2.4% 10-34-0
Bray P1 = 40 ppm KTS (0-0-25-17)
Exch K = 420 ppm