This last weekend I was spraying my post-emergence herbicides on my beans. Earlier in the week I finished spraying my corn. I applied the same herbicides on my corn and beans: Glyphosate to kill the small weeds that had emerged and S-Metolachlor, which will provide residual control. In about 10 days I will spray the corn again with Liberty and Atrazine. The beans will be sprayed again in late June with Flexistar G T.

The second applications on the corn and beans are different classes of herbicides. To prevent weeds developing resistance to certain classes of herbicides, weed scientists recommend using multiple classes of herbicides each year. By using other herbicides that are not GMO's, you have to get used to brown bean leaves.

The beans in this picture were sprayed late Saturday morning. The brown leaves were caused by the herbicide S-Metolachlor. This herbicide is an oil base and the oil "burned" the leaves. You will see more burning on a hot humid day. Saturday it was about 90 degrees and humid. There are some herbicides that are not oil based that you actually add crop oil to the spray tank. The oil helps the herbicide stick to the weeds and improve the herbicides ability to kill the weeds. By the way, the brown leaves will have no impact on bean yields as the beans will grow out of it.