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4 Year Study - The Proof is Avg. Higher Yield 45.1 Bu./A.
BECK’S Sub-Irrigation Study - 2014 Central Indiana
Purpose: To determine if yields can be increased by controlling the water table level with a sub-irrigation system. The sub-irrigation system consists of 3 in. tile, placed 24 in. deep and spaced 15 ft. apart following the contour of the field topography.
Summary: This is the fourth year evaluating corn in a sub-irrigation system. The past three years have averaged 45.1 Bu./A. higher in the sub-irrigation system when compared to the non-irrigated system. This year the sub-irrigation system only had a 3.8 Bu./A. average increase. One could speculate that this difference is due to the amount of rainfall received in August —in 2013 we were drier and hotter than in August of 2014. The combination of adequate soil moisture and cool temperatures were the driving factors for this years results. The sub-irrigation system still holds a 34.8 Bu./A. four year average advantage over the non-irrigated section (Figure 1). Figure 1 also shows the average rainfall for each year during the months of April through August.
Beck's Hybrids PFR program conducts more than 75 different studies across multiple locations (500+ acres) to learn how different management practices and new technologies perform in field environments. Simply put, it is research focused with the farmer in mind. To see the entire study, please download the PFR Book and see page 68.