To determine the yield differences between tile spaced at 15 ft., 30 ft., and 60 ft. widths at two different depths of 24 in. and 36 in.

2016 Southern Illinois Corn Water Management Study - Tile Spacing & Depth

Significant differences were noticed early in the season in soil drying rates. The 15 ft. and 30 ft. tile spacings at both tile depths dried out at a much quicker rate than the 60 ft. spacing at either depth.

No visual differences in the rate of drying or condition of the crop was noted between the 24 in. and 36 in. depth.

The 36 in. tile depth out-yielded the 24 in. depth by an average of 2.1 Bu./A. across all tile spacings.

We also noticed that yield differences exist between rows directly above tile lines, and rows harvested from the middle of tile rows, as shown in the illustration of percent yield loss above.

Fall Disk-Rip, Spring Vertical-Till/Field Cultivation | 

Pre: 3.5 oz. Corvus®, 1 qt. Atrazine Post: 3 oz. Capreno®, 1 qt. Roundup PowerMAX® | 

2021 Iowa Corn Thin Stand Management Study - Fungicide Response

2021 Iowa Corn Sulfur Rate & Timing Study

Water Management Study