Experiment Info
| Planted | 5/12/2014 |
| Harvest | 10/22/2014 |
| Yield Goal | 170 bu/A |
| Target Fert. | 175-30-60 |
| Variety | DKC 53-56 RIB |
| Population | 34,000 |
| Row Width | 30″ |
| Prev. Crop | Soybeans |
| Plot Size | 15 x 210 |
| Replications | 4 |
| Potash: | 10/29/2013 |
| Dry BC: | 5/5/2014 |
| Urea: | 5/6/2014 |
| Sidedress: | 6/9/2014 |
Soil Test Values (ppm)
| pH | 6.1 |
| CEC | 11.6 |
| %OM | 2.5 |
| Bray P1 | 13 |
| Bicarb P | – |
| K | 118 |
| S | 9 |
| %K | 2.6 |
| %Mg | 17.4 |
| %Ca | 65.8 |
| %H | 13.8 |
| Zn | 1.3 |
| Mn | 8 |
| B | 0.4 |
Objective:
Compare different fertilizer programs for corn and soybeans grown in rotation in the same designated plots yearly.
An experiment was established in 2011 comparing different corn and soybean fertilizer programs in adjacent sites.
Nitrogen only: 47 gal/A 28% + eNhance (sidedress or SD)
AgroLiquid: 3 gal/A Pro-Germinator + 5 gal/A Sure-K + 2 qt /A Micro 500 (in furrow); 47 gal/A 28% + eNhance (SD)
Low Rate Conventional (to match AgroLiquid actual lb of nutrients/A): 20 lb/A 0-0-60 (following soybeans); 2 gal/A 10-34-0 + 1 qt/A 9% Zn + 1 qt/A 9% Mn (in furrow); 47 gal/A 28% UAN (SD)
Conventional liquid/dry: 200 lb/A 0-0-60 (following soybeans); 7.5 gal/A10-34-0 + 1 qt/A 9% Zn + 1 qt/A 9% Mn (in furrow); 47 gal/A 28% UAN (SD)
Conventional dry: 200 lb/A 0-0-60 (following soybeans); 365 lb/A urea + 65 lb/A DAP + 2 lb/A zinc (preplant inc).
Conclusions:
- All of the complete fertilizer treatments where P, K and micros are applied yielded higher than the N only.
- The AgroLiquid treatment has the highest average yield over the four test years.
- The yield with the low rate conventional fertilizers has the lowest yield of the complete fertilizer treatments, even though it has the same lb/A application of nutrients as the AgroLiquid treatment. This would suggest that there are in fact, differences in formulations that has an effect on yield.