Bromoxynil primarily affects which crops by causing speckling of leaves?

Bromoxynil is a systemic herbicide that primarily targets broadleaf weeds. When applied, it can cause symptoms like speckling or chlorosis, particularly in sensitive crops. Among the options provided, corn and soybeans are two of the primary crops where bromoxynil is frequently used as a herbicide.

Corn and soybeans, as crops, are typically susceptible to the effects of bromoxynil, especially at certain growth stages or when conditions favor its uptake. The speckling of leaves often occurs because the herbicide interferes with photosynthesis and affects leaf cell integrity, leading to visible damage.

In contrast, while other crops like wheat, barley, rice, oats, potatoes, and tomatoes may have their own sets of vulnerabilities to certain pesticides or herbicides, bromoxynil is notably effective and problematic specifically in the context of corn and soybeans. These crops have been studied extensively in relation to bromoxynil, which has contributed to our understanding of its effects and the potential risks it poses to them.