2017 Southern Illinois Corn Water Management Study - Sub-Irrigation
The purpose of this study is to evaluate the differences in yield with a sub-irrigation system used to control drainage and irrigation, both with and without moisture sensors.
With near drought-like conditions throughout the months of August and September, we added water to this plot almost every day. Readings taken from CropX moisture sensors showed what the soil moisture levels were in each treatment at both the 8 in. and 18 in. depths. Based on these readings, we made the decision to run water to the manual portion of the study. However, the combined average of the two hybrids showed that the sensor based sub-irrigation performed best.
2-YEAR SUB-IRRIGATION YIELD ADVANTAGE
Planted 5/16/2017 | Harvested 10/3/2017 | Population 34,000 Seeds/A. | Row Width 30 in. | Previous Crop Soybeans | Tillage Fall: Vertical-Till/In-Line Rip, Spring: Vertical-Till | Herbicides Burndown: 3 pt. Gramoxone® SL 2.0, 4 oz. Metribuzin Pre: 3.5 oz. Corvus®, 1 qt. Atrazine, 1 qt. Roundup PowerMAX® | Insecticides 4.4 lb. Force® 3G, Escalate™ | Starter 10 gal. 28-0-0 2x2 | Total Nitrogen 190 Units as UAN | Soil Type Cisne (Silt Loam) | Soil Test Values pH 7.6, O.M. % 2.6, CEC 11 | Percent Base Saturation Ca 83.9, Mg 12.8, K 3.3, H 0 | Parts Per Million P 110, K 141, S 7, Zn 5, Mn 34, B 0.3
*®XL, Optimum, and AcreMax are registered trademarks of Pioneer. XL® brand seed is distributed by Beck’s Superior Hybrids, Inc.