2017 Southern Illinois Soybean 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.
Rainfall events during April and May once again put our tile to the test. This year, both depths showed yield increases as the spacings narrowed, with solid gains seen in both the 15 ft. and 30 ft. spacings. The 24 in. depth, however, showed a larger increase in the 15 and 30 ft. spacings. This could be the result of the shallower root system on soybeans working well with the 24 in. depth. Additional years of data will help paint a clearer picture as we continue to evaluate tile drainage!
2-YEAR TILE SPACING AND DEPTH YIELD ADVANTAGE
Planted 4/19/2017 | Harvested 9/14/2017 | Population 140,000 Seeds/A. | Row Width 30 in. | Previous Crop Corn | Tillage Fall: Vertical-Till/In-Line Rip, Spring: Vertical-Till | Herbicides Pre: 1 qt. Authority® Elite, 1 qt. Roundup PowerMAX® Post: 4 oz. Anthem® Maxx, 1 qt. Liberty®, 4 oz. Section® Three | Brand 394L4 | Soil Type Cisne (Silt Loam) | Soil Test Values pH 6.7, O.M. % 2.3, CEC 10.3 | Percent Base Saturation Ca 70.5, Mg 15, K 2.9, H 11.7 | Parts Per Million P 46, K 115, S 6, Zn 1.8, Mn 41, B 0.2