ESN Slow-Release N Fertilizer

Trial Type

N Fertilizer

General Stats

County
Hamlin
Replications
4
Crop
Soybean
Seed Brand
No Value
Variety
No Value
Relative Maturity
1.0
Tillage
Conventional Till
Irrigated
No Value
Drain Tile
No Value
Previous Crop
Corn
Row Sapcing
15"
Plant Population
170000
Plant Date
20/05/2014
Cover Crop
No Value
Seed Treatment
No Value

Soil Stats

Soil Type
Fine
Soil pH
4.0
Organic Matter
No Value

Methodology

Two strips of ESN were applied at 75 lbs. N/acre to soybeans planted in 15 in. wide rows on June 26, 2014 when the crop was at the V4 growth stage. The site received approx. 11.4 in. of rain and accumulated 1564 GDD’s from June 1 through August 31. This was approximately 0.3 in. more precip. and 104 less GDD’s than the 30 yr. avg.

Results

Overall, there was a 5.3 bu/ac yield response to ESN (Table 1). Soybeans grown on the Vienna- Brookings complex with some degree of slope appeared most responsive. ESN costs approximately $525 perton. Applying this rate could cost close to $45/acre in product alone. These results show that economical yield response may be predictable, which could warrant a precision application. Future studies are needed to confirm this concept and develop management zones for possible precision applications.

Rainfall

Temperature

Applications

  Event Date Type Application Method Amount
V(n) 26/06/2014 N Surface broadcast 75 lbs / acre (actual)

Fertilizer Applications

  Event Date Type Application Method Amount
V(n) 26/06/2014 N Surface broadcast 75 lbs / acre (actual)

Insecticide Applications

Fungicide Applications

Herbicide Applications