The lowest yielding treatments were the cultivation only treatments. This was likely due to the lack of weed control, especially sunflower. The table below shows that the cultivation of the PPI Treflan followed by Galaxy treatments did improve total weed control, but the improvement in weed control was not statistically significantly. These data would suggest that the most profitable weed control and soybean variety system in this 1999 experiment was the one using the least expensive soybean variety along with the PPI Treflan followed by Epost Galaxy and cultivation. The economic data, not adjusted for statistical significance is in the table below.
Total cost is cost of seed and weed control only.
The amount left to pay for all expenses after seed and weed control.