2021-2022 - Yield Book

Data from two replications show us that corn prefers to take up nutrients placed at 180 mm below the soil surface. Corn where nutrients were applied at 180 mm bellow the soil surface was 4.39 percent higher in yield than the placement depth of 250 mm. This is consistent with other research that Orthman has conducted in other locations over multiple years. Based on the grain price of R3900/tonne and the average of two replications the 180mm placement depth would have a net profitability of R1708/ha more than the 250mm placement depth.

Deep Rip + Strip-till VS. Strip-till


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