2021 Southern Illinois Wheat Row Width And Population Study
The purpose of this study is to evaluate various row spacings and populations to determine which system provides the highest return on investment per acre.
2-YEAR ROW WIDTH AND POPULATION NET RETURN
As a result of the dry conditions post-harvest, we planted this study into a thick soybean residue mat. The 15 in. wheat yielded better overall, but the population portion of this study showed that lower populations were more successful in 2021. Our two-year data shows that 1,050,000 seeds/A. is the optimum population for drilled wheat and 700,000 seeds/A. is ideal for 15 in. wheat.
Planted 10/7/2020 | Harvested 6/24/2021 | Population Various | Row Width Various | Previous Crop Soybeans | Tillage No-Till | Herbicides Feekes 5: 0.9 oz. Harmony® Extra SG | Insecticides Escalate® | Total Nitrogen 100 units as UAN | Brand 721 | Soil Type Hoyleton-Darmsdtadt (Silt Loam) | Soil Test Values pH 7.1, O.M. % 2, CEC 6.5 | Percent Base Saturation Ca 80.3, Mg 17.2, K 2.5, H -- | Parts Per Million P 54, K 64, S 6, Zn 5.1, Mn 57, B 0.2