Preplant K2O + ESN® V3 Broadcast (High Yield Zone, >55 bu/ac)

Trial Type

N Fertilizer

General Stats

County
Clay
Replications
1
Crop
Soybean
Seed Brand
Asgrow
Variety
AG2835
Relative Maturity
2.0
Tillage
Strip-Till
Irrigated
No Value
Drain Tile
No Value
Previous Crop
Corn
Row Sapcing
15"
Plant Population
165000
Plant Date
19/05/2015
Cover Crop
No Value
Seed Treatment
Fungicide, Insecticide, Inoculant

Soil Stats

Soil Type
Fine
Soil pH
4.0
Organic Matter
No Value

Methodology

Methods and Agronomic Information

Three strips of potash were applied at 100 lbs K20 ac-1 on April 22.  The fertilizer was shallowly incorporated with vertical tillage just prior to planting.  AG2835 (Strip 1) and AG2933 (Strips 2 and 3) were planted in 15” rows on May 19.  The seed was treated with IntegoTM (insecticide + fungicide) and Optimize® (rhizobia inoculant + LCO molecule).    ESN® controlled-release polymer coated urea was applied to the same strips as a surface broadcast at 75 lbs N ac-1 on June 24 at V3.  The field received approx. 16.1 in. of rain from June 1 through August 31.  Yield differences within each treatment strip (Figure 1) were calculated by subtracting untreated yield from treated yield, where untreated yield was estimated from data surrounding both sides of the treatment strip.

Results

Results

Overall, there was no significant yield response to ESN® (Table 2).  In fact, there appeared to be several areas of yield loss, mostly in depression areas.  These results were similar to a trial in the same field in 2015 where only the K2O was applied.

Rainfall

Temperature

Applications

  Event Date Type Application Method Amount
Pre-plant 22/04/2015 K Surface broadcast 100 lbs / acre (actual)
V3 24/06/2015 N Surface broadcast 75 lbs / acre (actual)

Fertilizer Applications

  Event Date Type Application Method Amount
Pre-plant 22/04/2015 K Surface broadcast 100 lbs / acre (actual)
V3 24/06/2015 N Surface broadcast 75 lbs / acre (actual)

Insecticide Applications

Fungicide Applications

Herbicide Applications