Can you apply EXTRACT PBA with pre-emerge herbicide up to V11 in corn?
EXTRACT PBA should not be applied to the corn seedling post emergence. Post-emergent sprays with EXTRACT PBA have the potential to burn a grass crop like corn due to the ammonium thiosulfate (ATS) in the product. However, EXTRACT PBA can be included with post-plant pre-emerge herbicide sprays on corn. It can also be used in UAN sidedress applications to make the sidedress nitrogen more efficient.