2017 Southern Illinois Corn Water Management Study - Tile Spacing and Depth
The purpose of this study is 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.
The corn in this late April planting date study received heavy rainfall events shortly after planting, much like during the 2016 season. Looking at our two-year dataset, it appears that tile depth was the biggest factor in these yield differences. Tile drainage has also shown to have a large advantage at our Southern Illinois PFR site.
2-YEAR TILE SPACING AND DEPTH YIELD ADVANTAGE
Planted 4/20/2017 | Harvested 9/19/2017 | Population 34,000 Seeds/A. | Row Width 30 in. | Previous Crop Corn | Tillage Fall: Vertical-Till/In-Line Rip, Spring: Vertical-Till | Herbicides Pre: 3.5 oz. Corvus®, 1 qt. Atrazine, 1 qt. Roundup PowerMAX® Post: 3 oz. Capreno®, 1 qt. Roundup PowerMAX® | Insecticides 4.4 lb. Force® 3G, Escalate™ | Starter 10 gal. 28-0-0 2x2 | Total Nitrogen 190 Units as UAN | Brand 6365AMX™* | Soil Type Cisne (Silt Loam) | Soil Test Values pH 6.1, O.M. % 2.1, CEC 6.6 | Percent Base Saturation Ca 64.3, Mg 14.5, K 3.1, H 18.2 | Parts Per Million P 25, K 79, S 5, Zn 1.4, Mn 37, B 0.2
*®XL, Optimum, and AcreMax are registered trademarks of Pioneer. XL® brand seed is distributed by Beck’s Superior Hybrids, Inc.