Replicated Strip Trial Report for ST2015WIMC001

0 500 1,000250 FeetNatural Color

NDVI

©2015 Iowa Soybean Association1

This is a Soybean Crop Management - Row Spacing trial comparing 15" rows vs. 30" rows, located in Walworth County, Wisconsin.

Aerial Imagery Flown August 27, 2015

Walworth County, WI

Treatment Layout and Results

©2015 Iowa Soybean Association2

Trial ID: ST2015WIMC001

Treatment15 inch rows30 inch rows

Trial Type Crop Management - Row SpacingTrial Detail 15" rows vs 30" rowsPlanting Date 5/12/2015Harvest Date 10/11/2015

Yield Average By Individual Treatment

15 inch rows 30 inch rows 15 inch rows 30 inch rows 15 inch rows 30 inch rows 15 inch rows 30 inch rows 15 inch rows 30 inch rows 15 inch rows 30 inch rows

Yield (

bu/ac

re)

75

70

65

60

55

50

6866.8

65.8

67.7

63.9

67.569.1

65.9

68.4

65 64.7 64.5

Treatment 15 inch rows 30 inch rows Yield difference is not statistically significant at 10% significance level. Yield Averages (bu/acre) 66.7 66.2

Grain Yield with Soil Survey

PtA

©2015 Iowa Soybean Association3

*Yield differences calculated for Soil Map Units that have relatively small areas might not be representitive of the treatments.

Trial ID: ST2015WIMC001

0 - 45 55 - 60 70 - 75 90 +Yield (bu/ac)

15" Rows

0 - 45 55 - 60 70 - 75 90 +Yield (bu/ac)

30" Rows

Plano silt loam, gravelly substratum, 0 to 2 percent slopes PtA 100 100 66.6 66.2 0.4

Yield By Treatment and Soil Map Unit

Soil Map UnitMap

SymbolPercent of Trial

15" rows 30" rows Yield (bu/acre)

15" rows 30" rows Yield*

Difference

Harvest Variables and Rainfall

©2015 Iowa Soybean Association4

Trial ID: ST2015WIMC001

Combine Speed (mph) 4.1 4 0.1Grain Moisture (%) 11.9 11.9 0

Harvest Variable Treatment 15" rows 30" rows

Variable Differences