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